Enviromail HK02 3 December 2014€¦ · Temperature-In situ EA012 In House 0.1 oC Colour EA041L...
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RIGHT SOLUTIONS | RIGHT PARTNER TECHNICAL MEMORANDUM STANDARDS FOR EFFLUENT DISCHARGE Enviromail HK023 December 2014 INTRODUCTION Over the past few decades, the economic growth and population pressure makes the quality of waters of Hong Kong progressively worse. In order to safeguard public health and maintain the natural recovery, in 1980, The Water Pollution Control Ordinance (Chapter 358) was enacted; and HKSAR Government has been implemented controls on wastewater discharges. Any activity which involves the discharge of effluent from industrial, institutional and commercial premises within the water control zones, the discharge licence must be required. TECHNICAL MEMORANDUM The Technical Memorandum on Effluent Standards is a guide to the Authority under the Ordinance. It declares the water control zones in Hong Kong and sets the acceptable limits that make effluents discharge into foul sewers, storm water drains, inland waters or coastal waters. The limits control the physical, chemical and microbial quality of effluent. Parameters are listed on Figure 2. EFFLUENT STANDARD Each water control zone has its own discharge standard depends on its nature and the discharge flow rate (in Figure 1). Discharge licence owner has to follow the parameters and acceptable limit on licence to discharge the wastewater. Therefore, the regular monitoring is required. ALS provides the different package for general discharge, such as construction discharge, swimming pool discharge and grease trap discharge; which are shown in Figure 3. Source: Technical Memorandum Standards for Effluents Discharged into Drainage and Sewerage systems, Inland and Coastal Waters, EPD HKSAR http://www.legislation.gov.hk/blis_pdf.nsf/6799165D2FEE3FA94825755E0033E53 2/569E03D57CCBAE69482575EE006FF774/$FILE/CAP_358AK_e_b5.pdf www.alsglobal.com For More Information Please email to [email protected] or call us at +852 2610-1044 Address: 11/F, Chung Shun Knitting Centre, 1-3 Wing Yip Street, Kwai Chung, N.T., Hong Kong Figure 1 Example of Standards for effluents discharged (a) Foul Sewers (b) Group A Inland Water
Transcript of Enviromail HK02 3 December 2014€¦ · Temperature-In situ EA012 In House 0.1 oC Colour EA041L...
RIGHT SOLUTIONS | RIGHT PARTNER
TECHNICAL MEMORANDUM STANDARDS FOR EFFLUENT DISCHARGE
Enviromail HK023 December 2014
INTRODUCTION
Over the past few decades, the economic growth and population pressure makes the quality of waters of Hong Kong progressively worse. In order to safeguard public health and maintain the natural recovery, in 1980, The Water Pollution Control Ordinance (Chapter 358) was enacted; and HKSAR Government has been implemented controls on wastewater discharges. Any activity which involves the discharge of effluent from industrial, institutional and commercial premises within the water control zones, the discharge licence must be required.
TECHNICAL MEMORANDUM
The Technical Memorandum on Effluent Standards is a guide to the Authority under the Ordinance. It declares the water control zones in Hong Kong and sets the acceptable limits that make effluents discharge into foul sewers, storm water drains, inland waters or coastal waters. The limits control the physical, chemical and microbial quality of effluent. Parameters are listed on Figure 2.
EFFLUENT STANDARD
Each water control zone has its own discharge standard depends on its nature and the discharge flow rate (in Figure 1). Discharge licence owner has to follow the parameters and acceptable limit on licence to discharge the wastewater. Therefore, the regular monitoring is required. ALS provides the different package for general discharge, such as construction discharge, swimming pool discharge and grease trap discharge; which are shown in Figure 3.
Source: Technical Memorandum Standards for Effluents Discharged into Drainage and Sewerage systems, Inland and Coastal Waters, EPD HKSAR http://www.legislation.gov.hk/blis_pdf.nsf/6799165D2FEE3FA94825755E0033E532/569E03D57CCBAE69482575EE006FF774/$FILE/CAP_358AK_e_b5.pdf
www.alsglobal.com
For More Information Please email to [email protected] or call us at
+852 2610-1044
Address: 11/F, Chung Shun Knitting Centre,
1-3 Wing Yip Street, Kwai Chung, N.T., Hong Kong
Figure 1
Example of Standards for effluents discharged
(a) Foul Sewers
(b) Group A Inland Water
RIGHT SOLUTIONS | RIGHT PARTNER
Figure 2: General Testing Parameters to monitor the Quality of
Effluent
Parameters ALS Method Code
In-house Method Reference
Reporting Limit
PHYSICALS
pH EA002 APHA 4500H+: B 0.1 pH unit
Temperature-In situ EA012 In House 0.1oC
Colour EA041L Lovibond Tinometer 0.1 Lovibond
Unit
Conductivity EA010 APHA 2510 B 1 uS/cm
Total Residual Chlorine-In situ EK010 APHA 4500Cl: G 0.2 mg/L
Total Suspended Solids EA025 APHA 2540 D 2 mg/L
Settleable Solids EA034 APHA 2540 F 3 mg/L
Dissolved Oxygen-In situ EP025A APHA 4500O: G 0.1 mg/L
CHEMICALS
Biochemical Oxygen Demand (BOD) EP030 APHA 5210 B 2 mg/L
Chemical Oxygen Demand (COD) EP026C APHA 5220 C 5 mg/L
Oil & Grease EP020 APHA 5520 B 5 mg/L
Cyanide-Total EK026FIA APHA 4500CN:
A,B,O 0.01 mg/L
Sulphate ED041K USEPA 375.4 1 mg/L
Sulphide EK085 APHA 4500S2-: D 0.1 mg/L
Total Phenols EP035 APHA 5530 B&D 0.2 mg/L
Total Surfactants1 EP051 APHA 5540 B,C&D 1.0 mg/L
Anionic Surfactants EP050 APHA 5540 B&C 0.5 mg/L
Non-ionic Surfactants EP041 APHA 5540 B&D 0.5 mg/L
Total Phosphorus EK067P APHA 4500P: J 0.01 mg/L
Total Reactive Phosphorus EK071K APHA 4500P: B&F 0.01 mg/L
Chloride ED045K USEPA 325.1 1 mg/L
Fluoride EK040 APHA 4500F: C 0.1 mg/L
Total Nitrogen EK062P APHA 4500P: J APHA 4500NO
3: I
0.1 mg/L
Total Kjeldahl Nitrogen (TKN) EK061P 0.1 mg/L
Ammonia- Nitrogen EK055K APHA 4500NH3: G 0.01 mg/L
Nitrate -Nitrogen EK058A APHA 4500NO
3: I
0.01 mg/L
Nitrite -Nitrogen EK057A 0.01 mg/L
METALS
Antimony, Beryllium, Manganese, Lead, Mercury, Barium, Cadmium,
Chromium, Copper, Boron, Nickel, Silver, Arsenic, Thallium,
Vanadium, Zinc, Selenium
EG020T USEPA 6020A 0.2 - 10 µg/L
Iron EG032T USEPA 6010C 0.05 mg/L
Total Toxic Metals2 EG020T In house method 0.5 mg/L
MICROBIAL
E. coli EM002 DoE Section 7.8 & 7.9 & plus in-situ urease test
1 cfu/100ml
1Total Surfactants are the sum of anionic and non-ionic surfactants 2”Toxic Metals” includes antimony, arsenic, beryllium, cadmium, chromium,
copper, lead, mercury, nickel, selenium, silver, thallium, vanadium and any other
metals that the Authority specifies.
Figure 3: Examples for Different ALS Effluent
Discharge Package
Grease Traps,
Oil Interceptors
Effluent
Discharge
Swimming Pool
Water Discharge
Construction
Site Effluent
Discharge
pH pH
Temperature
Total Suspended Solids
Total Suspended
Solids Total Suspended
Solids
Biochemical Oxygen Demand (BOD)
Biochemical Oxygen
Demand (BOD)
Chemical Oxygen Demand (COD)
Chemical Oxygen
Demand (COD) Chemical Oxygen Demand (COD)
Oil & Grease
Total Residual
Chlorine
Total Surfactant
Container for Wastewater Sampling
ALS provides pre-treated and labelled sample
containers for all analytical work to be conducted at
the laboratory. All preservation and chilled samples
whilst en route to the laboratory maintain the
wastewater quality.
Test Parameter Label
Colour
Container Type (Preservation)
INORGANICS
Solids, Cations,
Anions, Physical
Properties, BOD,
Surfactants
Green 1 L plastic (none)
Sulfide Yellow 250 ml plastic (Zinc
Acetate +
NaOH)
Total Cyanide Blue 250 ml plastic (NaOH)
COD,
Ammonia,Total
Nitrogen, NOx,
TKN, TP, RP,
Total Phenols
Purple 250 ml plastic (H2SO
4)
Oil & Grease Purple 1 L amber glass (H2SO
4)
MICRO AND ALGAE
E.coli Grey 250 ml sterile (Sodium
Thiosulfate)
METALS
Heavy Metals
(Total / Lab
Filtered)
Red /
Green 250 ml plastic
(none)
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