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