WASTE WATER TREATMENT IN

WET MARKETS OF KUALA LUMPUR

DEPARTMENT OF CIVIL ENGINEERING AND URBAN TRANSPORTATION

KUALA LUMPUR CITY HALL

6 OCTOBER 2016

Introduction

One of the Key Initiative under the River of Life (ROL) development program by the Government of Malaysia

Sources of wastewater in wet markets in Kuala Lumpur

Cleaning the marketdaily after operations Discharge from wet market activities Discharge from food stalls within the

market vicinity

Project Location Receiving River

-Pasar Harian Selayang Sg. Jinjang

-Pasar Borong KL Sg. Jinjang

- Pasar Jln Klang Lama Sg. Klang

- Pasar Air Panas Sg. Bunus

- Pasar Sentul Sg. Gombak

PASAR

BORONG KL

JLN KLANG LAMA

PASAR AIR

PANAS

PASAR

SENTUL

PASAR

HARIAN

SELAYANG

Project Location

Design Data

Flowrate = 130 m3/hour @ 1,300 m3/day

(Water sampling : 3 days and 24 hours accordingly to Department of

Environment Malaysia Standard Guideline)

INTAKE SUMP STABILIZING BASIN WET COMPARTMENT DRY COMPARTMENT AERATION BASIN MBR BASIN WASHING BASIN STORE COMPARTMENT

TREATMENT PROCESS FOR MEMBRANE BIO-REACTOR (MBR)

Raw Wastewater

Intake Sump Macerator

Rotating Drum Screen

Oil & Grease Removal

Tank

Stabilizing Basin

Aeration Basin

MBR Basin Treated

Water Basin

Treatment Process at WTP

Process Instrumentation Diagram

INTAKE SUMP

Intake Sump

To Macerator

Influent

Coarse and fine screen – prevent rubbish and debris enter the sump

3 submersible pumps – duty / Standby

Controlled by Ultrasonic Level Sensor

Basin depth: 5.0 meter

Intake Pump

Ultrasonic Sensor

MACERATOR

Inline Macerator

From Inlet

Sump

To Drum

Screen

Coarse grinding of large particles to 4 ~ 5 mm

To grind large solids into small particle

ROTATING DRUM SCREEN

Rotating Drum Screen

To Oil &

Grease

Removal Tank

From

Macerator

Fine screening of particles

Send to landfill

under domestic

waste disposal

To screen small particle

(slot 0.5mm)

OIL & GREASE REMOVAL TANK

Oil & Grease Removal Tank

Remove floating free oil

Disposal by licensed contractor registered with Department of Environment Malaysia for recycling to become fuel oil.

To Stabilizing

Basin

From Drum

Screen

STABILIZING BASIN

Stabilizing Basin

From Oil &

Grease Removal

Tank

To Aeration

Basin From

Blower

STABILIZING BASIN

Diffuser membrane material - Ethylene Propylene Diene Monomer (EPDM)

Size of bubble from 1mm to 3mm

Air flow rate 5m3/h to 8m3/h

Store effluent

Supply oxygen to effluent

3 Submersible pumps – (Duty/ Standby)

Controlled by Ultrasonic Level Sensor

Basin depth: 3.5 meter

Hydraulic retention time 3 – 4 hours to homogenise the pollutant loading

Ultrasonic Sensor

Stabilizing Pump

AERATION BASIN

Remove suspended solid, COD and BOD

Biological oxidation process - Bubble Diffuser

Oxidized effluent will decent into MBR basin by outlet opening

Basin depth: 3.5 meter

Rate of aeration :12.5 m3/minute

Hydraulic Retention Time : 4 to 5 hours

Aeration basin, BOD5 : 20 mg/liter

Aeration basin, COD : 50 mg/liter

Aeration Basin

From Stabilizing

Basin

From MBR

Basin

Overflow to

MBR Basin

Supply Air

from Blower

MEMBRANE BIO-REACTOR (MBR) BASIN

MBR Basin

Sludge transfer

to sludge

digesting basin

Air

from

blower

Clean water

transfer to Treated

Water Basin

1

1

Set of MBR packages

Hooked up to the permeate suction pipe plastic hose

Water sucked through the membrane in MBR package by permeate pump

3 nos self priming pumps/train (duty/standby).

Continuous air supplied to the bottom MBR Package units.

Air provided through air diffuser located underneath MBR package.

Air bubbles blows through membrane and loosen the dirt

The loosen dirt drop down accumulates as sludge

Membrane Bio-Reactor [Intro]

Membrane Material : High Density Polyethylene

Membrane Type : Hollow Fibre Pre Size : 0.4 Micron Allowable pH range : 2 – 13 Optimum Temp : 13 °C – 35 °C

(Operating Condition)

Membrane Bio-Reactor (Installation)

MBR Package

Put into the Frame MBR Package slowly

submerge into water

Header install to supply

air and transfer water

MBR Package finish

installed

Treated Water Basin

Transfer clean

water to MBR

Basin through

Backwash Pump

Transfer clean

water from MBR

Basin through

permeate pump

Store treated water before discharge into outlet drain

Used in the backwash operation

Controlled by Float sensor

Basin depth: 3.5 meter

Cleaning Washing Basin and

fill the washing basin with

the clean water

Water level inside MBR

basin need to be reduce to

put the chain

Chain block used to lifted

the MBR frame inside MBR

basin

MBR cartridge removed

from frame

Water jet used to remove

any sludge and rubbish

inside MBR cartridge

The MBR frame was soaked

in the sodium hypochloride

for 2 hours.

Membrane Bio-Reactor (Maintenance)

Membrane Bio-Reactor (Maintenance)

After 2 hours of chemical

cleaning, the frame left

suspended on the washing

basin for 5 minutes to toss

the chemical solution

And then the MBR frame

moved back to its original

location.

Repeat procedure for all

the cartridges in the MBR

Frame.

After finish cleaning, let

the plant run for 30min –

1 hour to test the MBR

condition.

Sludge Digesting Basin

SLUDGE DIGESTING BASIN

Overflow to

Stabilizing

Basin

Air from

Blower Sludge

transfer from

MBR Basin

Store accumulated sludge

The interval of sludge desludging depends on quality of effluent.

Basin depth: 3.5 meter

Disposal at Jinjang Transfer Station

WASHING BASIN

Washing Basin

WASHING BASIN

Use during MBR cleaning MBR frame soak into this

basin Sodium Hypochloride and

Oxalic Acid supply to the basin Depth: 3.5m

From

Chemical

Tank

Chemical Dosing Metering Pump

CLEANING TANK

Used during washing MBR package

Supply chemical to the washing basin

Chemical used: Sodium Hypo Chloride & Oxalic Acid

Chemical Tank

Used to store chemical solution

Supply chemical to the washing basin

Belt Press (Sludge Dewatering)

Desludging Process

Control Panel Data Collection

Water Flow rate and Gauge All the monitoring work need to be conducted Daily to maintain a good water quality

MONITORING AND CHECKLIST

Control Panel

Monitoring Panel

Influent and Effluent Water

Influent Water Effluent Water

Certificate of Analysis

Influent Water Effluent Water

Summary Influent and Effluent Water Quality

Photo 1 : Front view of Wastewater Treatment Plant

Wholesale Market Kuala Lumpur

Photo 2 : Back view of Wastewater Treatment Plant

Photo 3 : Left side view of Wastewater Treatment Plant

Photo 4 : Left side view of Wastewater Treatment Plant

Photo 5 : 1st Floor view from Stabilizing Basin of Wastewater Treatment Plant

Photo 6 : 1st Floor view from Treated Water Basin of Wastewater Treatment Plant

Photo 7 : Dry Compartment of Wastewater Treatment Plant

Photo 8 : Wet Compartment of Wastewater Treatment Plant

Photo 9 : Pump Compartment of Wastewater Treatment Plant

Photo 10 : Store Compartment of Wastewater Treatment Plant

THE END

THANK YOU

DEPARTMENT OF CIVIL ENGINEERING AND URBAN TRANSPORTATION

KUALA LUMPUR CITY HALL