1 Equivalence of PDA, CFG Conversion of CFG to PDA Conversion of PDA to CFG.
PRC PDA: Sludge Beneficial Uses (Midterm Report)
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W ATER FINANCING P ARTNERSHIP F ACILITY PILOT AND DEMONSTRATION ACTIVITY
PRC-PILOT STUDY ON BENEFICIAL USE OF SLUDGE
MID-TERM REPORT
PREPARED FOR
THE ASIAN DEVELOPMENT B ANK M ANILA, PHILIPPINES
BY
WUHAN URBAN DRAINAGE DEVELOPMENT CO., LTD
WUHAN, HUBEI, PRC
30 M AY 2009
The views expressed in this paper/presentation are the views of the author and do not necessarilyreflect the views or policies of the Asian Development Bank (ADB), or its Board of Governors, or thegovernments they represent. ADB does not guarantee the accuracy of the data included in this paperand accepts no responsibility for any consequence of their use. Terminology used may notnecessarily be consistent with ADB official terms.
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Wuhan Urban Drainage Development Co. Ltd. PDA: Beneficial Use of Sludge
1 Mid-Term Report, 30 May 2009
TABLE OF CONTENTS
Table of Contents ..................................................................................................... 1
SECTION 1 INTRODUCTION .................................................................................. 1
1.1 Project Background .................................................................................... 1
1.2 Objectives and Scope of the PDA .............................................................. 2
1.3 Implementation Schedule ........................................................................... 3
SECTION 2 METHOD and preliminary achievement ............................................ 4
2.1 Technical Principle for the Study ................................................................ 4
2.2 The Conclusion of Bench-Scale Study ....................................................... 4
2.3 General Physical Progress and fruit ........................................................... 5
2.3.1 Pilot Study Facility System Design .................................................... 6
2.3.2 Pilot Study Facility Installation/Construction ...................................... 8
2.3.3 Protein Extraction .............................................................................. 9
2.3.4 Laboratory Analysis of Protein and Hydrolysis Residue .................. 11
2.3.5 Sludge Hydrolysis Residue Gardening Application ......................... 15
2.3.6 Issues Identified .............................................................................. 15
SECTION 3 PROJECT MANAGEMENT PROGRESS .......................................... 16
3.1
Project Management Structure ................................................................. 16
3.1.1 Background ..................................................................................... 16
3.1.2 Responsibilities ............................................................................... 17
3.1.3 The tasks undertaken ...................................................................... 18
3.2 The Work Progress ................................................................................... 18
3.3 WFPF Funds Utilization ............................................................................ 20
3.3.1 Contract Awards and Expenditure ................................................... 21
3.3.2 Disbursement .................................................................................. 22
3.4 Issues Identified ........................................................................................ 22
3.4.1 Project Planning .............................................................................. 23
SECTION 4 NEXT STEP WORK PLAN ................................................................ 23
4.1 Perfect the Achievement of Pilot Study......................................................... 23
4.2 Remedy Actions to Issues Identified ......................................................... 23
4.3 Field Works ............................................................................................... 24
4.3.1 Gardening Record ........................................................................... 24
4.4 End Users Survey ..................................................................................... 24
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4.4.1 Survey Plan and Questionnaire Design ........................................... 24
4.4.2 Survey Implementation .................................................................... 24
4.4.3 Financial Viability Study .................................................................. 24
4.5
Project Management................................................................................. 24
4.5.1 General Project Management ......................................................... 24
4.5.2 WFPF Funds Utilization ................................................................... 25
4.5.3 Remedy Actions to Issues Identified ............................................... 25
APPENDIX A UPDATED IMPLEMENTATION SCHEDULE ................................... 26
APPENDIX B UPDATED STAFFING SCHEDULE .................................................. 27
APPENDIX C STATEMENT OF EXPENDITURES .................................................. 28
APPENDIX D SLUDGE MEASURING AND ANALYSIS REPORT ......................... 29
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SECTION 1 INTRODUCTION
1.1 Project Background
ADB is currently supporting serials of Wuhan wastewater management project,
including ADB Financed PhaseⅠ (Loan No.1996-PRC): wastewater management,
capacity construction and water quality modeling; ADB Financed Phase Ⅱ (Loan
No.2240-PRC): storm water management, wastewater management, capacity
construction and sludge management. Also, Wuhan is currently preparing a new
project for the solid waste and sludge management (ADB Financed Phase Ⅲ ).
There are 10 wastewater treatment plants (6 of which are financed by ADB) in
operation with total capacity of 1.59 million tons a day (1.0 million ton/day by ADB
Projects), and approximately 500~600 tons of sludge (water content is 80%) is
produced every day. At present, the sludge is transported and disposed at the landfill
plants. According to the Municipal Urban Development General Plan, the landfills in
the suburban area would be shutdown in the next several years and sludge disposal
would become a major issue for the Government as well as WWTPs. As a technical
preparatory work for above mentioned Phase Ⅲ project, Wuhan Urban Drainage
Development Co., Ltd (WUDDC) has conducted the initial bench-scale study and
experiment on beneficial use of sludge, including agricultural application as the
fertilizer, extracting the protein from the sludge and applying the residue in gardening.
The bench-scale study on extracting the protein from the sludge resulted in reduction
of water content in the sludge to 45% (from 80% in the dewatered sludge), thereby
the quantity of sludge to be disposed off at the landfill site or incineration plant would
be significantly reduced. The extracted protein from sludge could apply in the
bricking and fire fighting vesicant. So this study completely accord with the China’s
government requirements related to the sludge reduction, harmless, stability and
reuse.
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Wuhan’s strategic location along the Changjiang, commitment to improve
wastewater management and achievement of Government environmental policies
provides an opportunity to invest in environmental management and boost the
wastewater service provision. Surveys show that both the poor and the non-poor are
broadly in support of environmental projects and consider improvements to their
living environment as a priority to improving their quality of life.
To expand the previous bench-scale study of beneficial use of sludge into a pilot-
scale project with WFPF support, WUDDC has applied the PDA fund through ADB
and finally signed the Letter of Agreement (LOA) with ADB on 15 September 2008.
1.2 Objectives and Scope of the PDA
The objective of this PDA is to conduct pilot-scale study following the bench-scale
study, the extracting protein liquid from urban WWTPs. This pilot study is also aimed
to the experiment of utilizing the residue applied to gardening earth, then setup
demonstrating garden.
This study aimed to support and achieve the national sludge disposal” reduction,
stability, harmless, reusing” policy, utilizing the sludge to produce the economical
hydrolyzed protein liquid, and the residue (biosolid) as the gardening earth beneficial
utilizing, then made the sewer sludge maximum utilized.
The PDA would undertake the following tasks:Task1: Wuhan WWTPs’ sludge content was conducted with totally measurement
and analysis, also clean up and analyze the lab data and achievements.
Based on the achievement and data, primarily select the pilot-scale
experiment technical parameter;
Taks2 Preparing the proper field achieves the process of extracting protein. It’s
supposed to transport 6~8 tons of packaged sludge from Nantaizi Lake
WWTP to the field, conduct the sludge pilot-scale test, under the high
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SECTION 2 METHOD AND PRELIMINARY ACHIEVEMENT
2.1 Technical Principle for the Study
The characteristic of sludge from WWTP is mainly animalcules, protozoa, metazoans,
algae and few unknown organic and inorganic substances, and it contains high
content of protein (50% to 70% in dry sludge). Hydrolyzed protein (Peptide) can be
extracted from sludge through alkali hydrolysis. With the characteristic of froth, a lot
of foam can be generated after stirring and aeration from hydrolyzed protein, which
can be then formed into Protein Firefighting Powder through a serial process such as
adding stabilization liquid, antiseptic, antifreeze. The hydrolysis biosolids consist of
certain amount Nitrogen, Phosphorus, Kalium and other organic elements, which can
be utilized for gardening.
(a) The technology is to convert the sludge into two parts through hydrolysis:
hydrolyzed protein liquid and biosolids (70% volume reduction).
(b) Based on the high protein concentration feature of sludge, the technology
extracts protein, soluble organic and inorganic elements from the pollutants
in sludge, with high temperature, high pressure and high concentration of
alkali process. The final product can be applied as firefighting powder, which
is more environmental friendly than conventional chemical powders.
(c) During the process, unknown organic matters, pathogeny animalcules,
disease eggs are killed, so the there will be no biological pollution of the
residue. The residue contains only 45% water, which could be another
source of urban gardening and landscaping soil additive.
2.2 The Conclusion of Bench-Scale Study
To verify the theory as mentioned above, Hubei University has been working
together with WUDDC since 2006 and conducted bench-scale study with successful
results.
During previous bench-scale study, the following results have been achieved:
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(a) Identification of basic characteristic of sludge: water content 75~85%
(b) Identification of hydrolysis time: 6 hours.
(c) Identification of alkali dosage: 30% lime
(d) Temperature optimization: 121 degree Celsius
Total 11 papers was published and 5 invention patents were awarded from the
bench-scale study.
2.3 General Physical Progress and fruit
To further identify the market application feasibility, a pilot study was proposed and
funded by WFPF through ADB, as mentioned in Section 1. The Consultants
developed the work plan from November to December 2008, which is detailed in the
Inception Report. This section summarizes the pilot study activities conducted since
project inception, and the issues identified.
Following the sites selection, pilot study approaches identification during the
Inception Stage, efforts on the following tasks have been made by the Consultantswith the support from WUDDC, Hubei University and relevant authorities:
(a) Pilot study facility system design
1. Protein extraction facility lease negotiation and process design;
2. Hydrolysis residue (biosolids) gardening site design;
(b) Pilot study facility installation/construction
1. Protein extraction equipment modification at WJSC;
2. Garden construction at Erlangmiao WWTP of WUDDC;
(c) Protein extraction
(d) Sludge hydrolysis residue gardening application and planting
(e) Laboratory analysis of protein and hydrolysis residue
(f) Issues identified
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2.3.1 Pilot Study Facil ity System Design
Hubei University has extensive experience on the innovation of the technology
applied in this study and a well trained team during the previous bench-scale study, it
is therefore entrusted to develop the facility system design, with the services
integrated in the 2 consultancy agreements with Prof. Li Yadong and Prof. Li Haibo
on 5 November 2008.
Based on the system requirements described in Section 2.2.1, larger scale
experimentation is required for the pilot study in terms of protein extraction and
hydrolysis residue application. Investigations and initial agreements with WJSC and
Erlangmiao WWTP of WUDDC were conducted and reached during the inceptionstage, to (1) utilize the adequate steam and equipment in WJSC for hydrolysis and
(2) construct a garden in Erlangmiao WWTP for hydrolysis residue application.
(a) Protein Extraction (Hydrolysis) Facility Design:
The existing facility in WJSC is extracting protein from corps, which needs
modification for sludge hydrolysis. Upon the agreement entered with WJSC, one set
of protein extraction facility was leased to WUDDC for this pilot study, including:
a 10 tons Boiler
a 5m3 Hydrolysis Reactor
a 42m2 Frame Filer
Long tube concentrator
a 10m3 Filtration Buffer Tank
a 10m3 Storage Tank
a 15m3 Raw Material Mixing Tank
Feeding Pumps.
In accordance to the output of bench-scale study, the following protein extraction
process was developed:
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Figure 2. Indicative Protein Extraction Process
(b) Garden Design:
To better compare the nutrient performance of hydrolysis residue with natural soil, a
brick partitioned, sand and crushed stone bedded garden is designed with a size of
6m by 3m, including 3 sections: a section at one end with 100% natural soil, asection at the other end with 100% sludge hydrolysis residue, and the other section
in the middle with natural soil and residue ratio at 50% to 50%.
There are 10 gardening plants selected based on the ecosystems in Wuhan area,
and with the characters of long term flowering and distinguished colors, such as
Festuca Arundinacea Schred, Chrysanthemum Flower, Salvia Splendens,
Catharanthus Roseus, Brassica Napus, Capsicum Annuum, Hibiscus Rosa-sinensis
L., Euphorbia Mili, Schefflera Octophylla etc.
Raw Sludge
HydrolysisReactor145
oC
Steam
Lime6%
Water40%
FrameFilter
Hydrolysis
Residue(42-45% Water)
LiquidProtein
Concentrated Liquid
Protein(Long Tube 19oBe)
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Figure 3.
Festuca Arundinacea Schred
Figure 4.
Chrysanthemum Flower
Figure 5.
Salvia Splendens
2.3.2 Pilot Study Facil ity Installation/Construction
(a) Protein Extraction Facility Installation:
Due to the nature of available facility, the installation of protein extraction facility is
mainly adjustment and modification on the leased facility in WJSC, for the purpose of
this pilot study. Following the process design, the lease agreement was entered with
WJSC in February 2009 and the leased facility was made available in March 2009. It
was then cleaned and adjusted for protein extraction from sludge.
Figure 6. Boiler Pressure Adjustment Figure 7. Frame Filter Cloth Replaced
(b) Garden Construction:
The civil works of the garden construction in Erlangmiao WWTP was contracted to
Wuhan Kangxing Environmental Equipment Co., Ltd on 26 February 2009. The
construction works commenced in early March and completed in late March 2009.
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The construction process was supervised by the property management team of
WUDDC and the representatives from the Working Group.
The biosolids was transported by WUDDC Production Department from storage site
at WJSC to Erlangmiao on 20 March 2009. Gardening soil preparation was done by
the Contractor on 25 March 2009. Then gardening grasses and flowers were
purchased on 20-25 April 2009.
Figure 8. Garden
2.3.3 Protein Extraction
Following the protein facility adjustment and modification in WJSC, 6 tons raw sludge
was transported by WUDDC Production Department from Nantaizihu WWTP on 18
March 2009. The protein extraction process was commenced on 19 March 2009 and
6 tons of raw sludge were consumed during the 2 days extractions. The end
products of the process are 900kg concentrated liquid protein (long tube 19oBe), 3
tons hydrolysis residue.
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Figure 9. Unpacked Raw Sludge at
Nantaizihu WWTP
Figure 10. Packed Raw Sludge Unloading
at WJSC
Figure 11. Hydrolysis Process Figure 12. Hydrolyzed Sludge Liquid
Figure 13. Filtration Figure 14. Raw Protein Liquid Filtered
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Figure 15. Concentrated Protein Liquid Figure 16. Hydrolysis Residue
Process parameters were identified during the process:
Hydrolysis time: 2 hours
Alkali dosage: 6% lime
Hydrolysis temperature: 145oC
Identification of protein content: 27%
Water content in the hydrolysis residue: 45%
Foaming performance of protein:
- foaming stability time: more than 4 hours;
- foaming capacity: 120 times in volume
Characteristics of protein concrete (brick):
- water absorption rate: <10%;
- Weight ratio: 450kg;
- intensity: 0.5Mpa.
2.3.4 Laboratory Analysis of Protein and Hydrolysis Residue
(a) Protein Analysis
Protein analysis was conducted by Huibei University Laboratory for this study, prior,
during and after the protein hydrolysis process. The concentration of protein was
measured by 756MC UV-VIS Spectrophotometer the calculation of protein
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concentration in the dried sludge is through the equation: (Total protein / Total DS)
×100%.
The characteristics of the extracted protein are consistent with the result of Bench
Study.It is considered that the protein extracted can be used as the source of
firefighting protein powder, or protein concrete and brick, which needs further study
on its application.
(b) Hydrolysis Residue Analysis
The hydrolysis residue laboratory analysis :
Identification of heavy metal ions: By Hubei Province Agricultural TechnologyInstitute
Identification of fertilizer concentration: By Hubei Province Agricultural
Technology Institute
The result of heavy metal analysis is in Table-1 below:
Table-1 Heavy Metal Content in the Hydrolysis Residue(mg/kg)
Heavy Metals Pb Cr Cd Hg As
Content in
the Sample42.6 112.3 0.32 1.42 8.29
Content
Limits in
GB4284-84:
Standard forPollutants
Control in
Sludge
Agricul tural
Appl ication
300 600 5 5 75
From the analysis result, the heavy metals content is far below the agricultural limits,
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therefore deemed proper for gardening purpose, while saving space in landfill and
eliminating the sludge pollution problems.
Nutrients texts for both the sludge before hydrolysis and the hydrolysis residue were
conducted to compare the differences. The result of nutrients analysis is in Table-2
below:
Table-2 Nutrients Content in the Sludge and Hydrolysis Residue
NutrientsSludge before
HydrolysisHydrolysis
ResidueSample 1 Sample 2 Average
Total N (%) 2.26 2.62 2.44 0.46
Total P (%) 0.86 0.67 0.77 0.44
Total K (%) 0.60 0.84 0.72 8.78
Alkal i-hydrolyzed
Nitrogen (mg/kg)904.40 1083.95 994.18 70.60
Available
Phosphorous
(mg/kg)
37.62 32.20 34.91 68.60
Available
Potassium (mg/kg)764.60 432.50 598.55 95.90
Slow-release
Potassium (mg/kg)76.90 563.50 320.20 /
Available Copper
(mg/kg) 10.40 1.20 5.80 0.80
Available Zinc
(mg/kg)14.50 13.30 13.90 1.40
Available Iron
(mg/kg)115.20 227.40 171.30 7.50
Available
Manganese (mg/kg)70.90 65.70 68.30 8.20
Available 333.80 241.40 287.60 0.036
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Magnesium (mg/kg)
Available Calc ium
(%)0.69 0.54 0.62 0.27
Available Sil icon(%)
0.06 0.10 0.08 0.012
Available Sul fur (%) 0.07 0.09 0.08 0.64
Available Boron
(mg/kg)0.60 0.92 0.76 0.13
Available
Molybdenum
(mg/kg)
2.50 3.04 2.77 0.72
Organism (%) 28.75 30.70 29.73 23.00
pH 7.66 7.53 7.60 13.10
It is noticed that the Total N is significantly lower in the hydrolysis residue than that in
the sludge from Nantaizihu WWTP, which indicates most N was extracted from the
sludge in the form of protein liquid.
The comparison also implies that the sludge from Nantaizihu WWTP has some level
of nutrients and the heavy metals content is also lower than the control limits for
agricultural application, however, it is considered not suitable as fertilizer. The
reasons are (1) the nutrients content in the sludge is not as high as normal fertilizers;
(2) direct application of sludge will cause odor problem; (3) continuous application
will cumulate heavy metals in crops and the downstream of food chain.
The hydrolysis residue is with certain level of nutrients content, which can beconsidered as biosolids to be mixed with natural soil for gardening application.
However, the result also shows the hydrolysis residue is of high pH, which may have
some impacts on the plants growth. Therefore, further study on neutralization of the
hydrolysis residue was conducted.
(c) Neutralization of Hydrolysis Residue
Most of plants are favoring the soil condition close to pH=7, therefore, the
neutralization of hydrolysis residue was designed as follows: (1) water dilution; (2)
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mixture with garden soil; (3) mixture with natural soil; (4) piling for natural dilution by
rain water. Seeds germinating rate in the neutralized hydrolysis residue samples was
compared with that in the original hydrolysis residue. The detail is showed in
appendix.
The neutralization study shows:
- The water dilution is the most efficient way to neutralize the high pH
hydrolysis residue, but not practicable;
- The hydrolysis residue mixture with gardening soil or natural soil can
neutralize the high pH after around 15 days with a preferable ratio of
hydrolysis residue less than 50%;
- Piling hydrolysis residue outdoor with some rainfalls can neutralize in
about 6 days;
- Except for alkali favored seeds, all others can germinate better in the
above 4 neutralized soils than in the original hydrolysis residue.
Tentative conclusion was then made that the hydrolysis residue can be used as
biosolids after neutralization, and water can reduce the neutralization process time.
The garden was therefore designed with water spray system.
2.3.5 Sludge Hydrolysis Residue Gardening Appl ication
The planting of grasses and flowers in the garden was completed on 26 April 2009.
We planted the same 10 grassers and flowers in each section. The 10 grasses and
flowers were at the same conditions before planting in each section of the garden,
which will be monitored by the Consultants with a weekly basis in May, June and
July 2009. Following factors will be recorded during the monitoring for each grass
and flower for comparison: height, size and color of leaves, size of flowers.
2.3.6 Issues Identi fied
Since the PDA commenced in November 2009, several issues have been
encountered during the study, which are summarized below:
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(a) The pilot scale equipment is too expensive to purchase under the
dedicated allocation of PDA budget, so is the system operation space
required;
(b) Due to the budget reason as above, the PDA is only capable to conduct
the pilot scale study on protein extraction and hydrolysis residue
gardening application, while leaving the exploration of protein application
for future study;
(c) The hydrolysis residue gardening application proceeded with flowers
purchased from market rather than seeds, which may cause the
comparison among different soils not very distinct.
SECTION 3 PROJECT MANAGEMENT PROGRESS
3.1 Project Management Structure
3.1.1 Background
As mentioned in Inception Report, WUDDC established a working group comprising
people from management and relevant departments of WUDDC, which will be
supported by the consultants and specialists engaged for the Project. The key
representatives from the WUDDC are currently implementing the loan project, who
will act as key members of the working group for this PDA. The working group
composition is shown below:
Organization Name Title
Working
Group
from
WUDDC
Mr. Wang Changqing GM, Director of PDA Working Group
Mr. Tian Zhongkai Chief Engineer, Technical Advisor of Working
Group
Mr. Gu Jianxin Deputy GM, Executive Director of Working
Group
Consultants Mr. Tommy Zhang Team Leader, International Wastewater
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Engineering Specialist
Mr. Li Yadong Professor, Hubei University, Domestic
Wastewater Engineering and Sludge Disposal
Specialist
Mr. Li Haibo Professor, Hubei University, Domestic
Wastewater Engineering and Sludge Disposal
Specialist
Ms. Liu Xiaoyan Head of Chief Engineer Office, Assistant
Researcher
Ms. Li Yan Assistant Researcher
Ms. Wang Haibo Secretary, Translator
Mr. Zhong Hao Secretary and Translator
3.1.2 Responsibilities
The responsibilities of each member of the working group were described in the
Appendix A of Inception Report.
During the reporting period, responsibilities variation and breakdown were made for
the Working Group from WUDDC, with the following update:
Name Title Responsibi lity
Mr. Tian
Zhongkai
Chief Engineer,
Technical Advisor
of Working Group
responsible for day-to-day technical
management of the Pilot Study and
coordination with Consultants.
Mr. Gu Jianxin Deputy GM,
Executive
Director of
Working Group
responsible for liaison with ADB for project
management.
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3.1.3 The tasks undertaken
The tasks undertaken during the Inception by the Team include a review of project
documents and previous bench-scale study output to ascertain the current status of
the project, conduct interviews and meetings with WUDDC and the relevant
agencies to collect information and establish working relationships, selection of
sludge from Nantaizihu WWTP and pilot study site at WJSC, design development of
pilot-scale protein extraction facility and preparation of Inception Report.
The tasks conducted since the inception by the Team consist of meetings with
relevant organizations during the design of pilot-scale sludge protein extraction
facility and gardening facility; installation and commissioning of the facilities,operation; packaging and transporting the sludge, protein extraction, laboratory
analysis of protein extracted and the hydrolysis residue, garden construction and
demonstration, reporting.
3.2 The Work Progress
Since the project inception on 26 November,2008, with the support of work
group, the consultants have undertaken the following task:
1) The Fertilizer Monitor Center of Nation Agriculture Department was commission
to totally measure and analyze the sludge from the following 7 WWTPs:
Nongwangzui WWTP, Tangxunhu WWTP, Huangjiahu WWTP, Nantaizihu
WWTP, Sanjintan WWTP, Erlangmiao WWTP and Sahu WWTP, and the result
basically accords with national standard. The detail see Appendix D.
2) Prepare the appropriate site for study. WJSC possesses the protein extraction
facility, eg. high temperature reactor, filter and concentrator, so we select WJSC
as experiment site, and redesign and install the established facility.
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3) Transport 6 tons sludge from Nantaizi WWTP to WJSC, and conduct hydrolysis
experiment on 20 April,2009.
Mix the 6 tons sludge in the raw material Mixing Tank, then add lime and coduct
hydrolysis under high temperature, and extract 3 tons of bisolid and about 0.9
tons protein liquid.
4) Garden plant
Select Erlangmiao WWTP as plant site, and utilize hydrolyzed bisolid to establish
garden demonstration section.
The demonstration garden was designed with a size of 6m by 3m,18m2, and 10
garden plants was planted and monitored.
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Figure 17. Over View of Planted Garden Figure 18. Section with Natural Soil
Figure 19. Section with Mixed Soils Figure 20. Section with Hydrolysis
Residue
3.3 WFPF Funds Util ization
In accordance to the Letter of Agreement signed between ADB and WUDDC, there
is total USD50,000 grant from WFPF allocated for this PDA, while WUDDC provides
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counterpart funds for necessary activities such as office, transportation, translation,
etc with a budget of USD20,000. The utilization of WFPF grant is through four (4)
milestone disbursements: Advance, Inception Report, Mid-Term Report and Final
Report. The up to date funds utilization is shown in the SOE in Appendix C.
3.3.1 Contract Awards and Expenditure
3..3.1.1 Contract Awards To-date
As of 30 April 2009, five (5) contracts have been awarded for the Pilot Study and
accountable USD32,000 to WFPF Grant. Details are as follows:
(a) 3 consultancy services agreements were signed between WUDDC and 3
wastewater specialists on 5 November 2008, with total amount of
USD29,000.
(b) 1 design services agreement was signed between WUDDC and Prof. Li
Yadong, Prof. Li Haibo, with total amount of USD9,600, including the 2
agreements below:
the equipment lease agreement between WUDDC and WJSC
The civil contraction contract between WUDDC and Wuhan Kangxing
Environmental Equipment Co., Ltd.
3..3.1.2 Expenditure To-date
As of 30 April 2009, expenditure payable USD37,500 from WFPF Grant has
occurred, with the details shown below:
(a) Expenditure Paid
1. USD15,000 WFPF fund was paid to consultants during the inception
stage (refer to SOE No.1 of Inception Report);
2. USD5,000 was paid to in March, 2009.
(b) Invoices and Receipts to be Paid (refer to SOE No.2 of this Mid-Term
Report)
1. Invoices collected from 3 specialists
a. Mr. Tommy Zhang: USD51,00, invoice dated 30 April 2009;
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b. Prof. Li Yadong: USD1,800, invoice dated 30 April 2009;
c. Prof. Li Haibo: USD1,800, invoice dated 30 April 2009.
2. Invoices collected from site designing and facility leasing:
a. USD4,100, invoice dated 20 March 2009.
3. Invoices collected from Wuhan Kangxing Environmental Equipment Co.,
Ltd:
a. USD4,000, invoice dated 28 April 2009.
4. Receipts to be collected after salaries paid
a. Ms. Liu Xiaoyan: USD1,650
b. Ms. Li Yan: USD1,650
c. Ms. Wang Haibo: USD1,200
d. Mr. Zhong Hao: USD1,200
3.3.2 Disbursement
3..3.2.1 Disbursement To-date
As of 30 April 2009, there has been USD20,000 WFPF fund disbursed.
(a) December 2008, USD20,000 advance payment was disbursed from ADB to
WUDDC account for project commencement.
3.2.2.2 Disbursement during the Reporting Period
There was no disbursement since inception due to the late submission of the
Inception Report.
3.4 Issues Identified
During the reporting period, several issues were identified in the areas of project
planning..
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3.4.1 Project Planning
The six months project duration was updated to seven months in the Inception
Report, due to holidays in December 2008 and January 2009, and longer time
allowance for plants growing in the garden and better comparison result.
SECTION 4 NEXT STEP WORK PLAN
4.1 Perfect the Achievement of Pilot Study
Further analyze and study the Sludge Quality Report of all the WWTPs in
WuHan;
Tidy up and analyze all the raw data of pilot study, perfect the primary
achievement, further discuss the most suitable manner of beneficial use of sludge in
Wuhan;
Convene a proseminar, call the correlative consultants and other technologists
together to analysis the primary achievement, and advance more idea of the
application in the utilization of hydrolyzed protein;
Leave the hydrolyzed protein in the Sludge Resource Lab of HuBei University,
and this protein may be as the material for the application of hydrolyzed protein
4.2 Remedy Act ions to Issues Identified
Issues identified have shown that more funds are needed for further study on (1)
permanent pilot system purchase, installation, operation and maintenance; (2)
beneficial use of extracted protein as the source for vesicant and further
demonstration.
Remediation measures to the comparison of flowers growing in different soils have
been made by a weekly monitoring program and a long-term observation even after
this PDA.
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4.3 Field Works
4.3.1 Gardening Record
After the protein was extracted, the hydrolysis field work was completed, so there isonly field gardening monitoring needed in the remaining study period. The monitoring
activity is scheduled in a weekly basis, and conducted by the two project secretaries
with guidance from researchers and assistant researchers. The record will be
analyzed in the Final Report.
4.4 End Users Survey
4.4.1 Survey Plan and Questionnaire Design
As per the reasons mentioned in 4.1.1, the end user of this pilot study will be mainly
public and private gardening organizations for hydrolysis residue application. A
survey plan and associated questionnaire are being developed by the Consultants,
and will be finalized in mid June 2009 when a reasonable progress monitoring result
is ready.
4.4.2 Survey Implementation
The end user survey will be conducted begin June 2009 after the questionnaire is
ready.
4.4.3 Financial Viability Study
The financial viability study will be based on the end user survey and market
information collection, which is scheduled mid June 2009.
4.5 Project Management
4.5.1 General Project Management
WUDDC has paid close attention to the PDA progress and made much efforts in
internal staffing to facilitate especially the hydrolysis residue gardening application.
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Continuous support is committed from WUDDC Working Group and the Consultant
to keep the project management consistent, efficient and effective, e.g. WUDDC
property management staff have been appointed for garden watering and cleaning
works.
4.5.2 WFPF Funds Util ization
Delay of WFPF funds utilization was experienced due to late Inception Report
submission, the Consultants have contributed to the study under late pay condition
and will coordinate with WUDDC for prompt remedy actions. The Inception Report
and this Mid-Term Report submission together with 2 SOEs will resolve the situation
and make the fund available for project finalization.
4.5.3 Remedy Actions to Issues Identified
Lessens have been learnt on project coordination, commercial negotiation and
reporting in the previous study period, therefore, WUDDC and the Consultants will
pay attention to these issues,put more in this project and make the remaining study
smooth.
To resolve the issue of fund for further study on extracted protein application, the
Consultant has suggested the Working Group and WUDDC to consider further
financing, preferably from ADB as the continuation of this PDA.
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APPENDIX A UPDATED IMPLEMENTATION SCHEDULE
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APPENDIX B UPDATED STAFFING SCHEDULE
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APPENDIX C STATEMENT OF EXPENDITURES
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APPENDIX D SLUDGE MEASURING AND ANALYSIS REPORT