4 Treatment Technologies of Fresh Market Wastewater
67
to build the small scale of wastewater treatment system that could be replicated in
other markets (PEN 2008; CAP 2011).
The system in Muntinlupa City Market consists of several process flows as shown
in Fig. 4.4. The system was located under the parking lot due to limited ground space
and was designed to treat up to 210 m
3 of fresh market wastewater per day. The bar
screen is located at each main inlet area to filter large floatable debris such as garbage,
fish or meat trimming before flowing to the lift station which is a simple chamber
containing aired automatic pumps to collect wastewater to the equalization tanks.
This equalization tank is the point that wastewater retention and allows relatively
constant flow of wastewater to proceed to the next chamber. After that, the wastewater
flows to the anaerobic baffled reactor which is the main treatment technology used for
this project. This multi chambered (this project used four chambers anaerobic baffled
reactor) is closed without natural air and the wastewater flows slowly up and back
down in the pipes, through the identical chambers, each time entering the chamber
at bottom, where it passes through the accumulated sludge. The settleable solids in
the sludge and anaerobic bacteria in the sludge degraded the harmful organic and
chemical components in wastewater (PEN 2008; CAP 2011).
The up-flow anaerobic sludge blanket is a single tank with baffled near the top of
wastewater level in which the wastewater flows upward through the blanket, and the
sludge was settling using gravity with the aid of flocculant. The sludge then decomposes by anaerobic bacteria. The degradation is methanogenic (methane produced)
and produces carbon dioxide. The bubbles rise upward and provide natural mixing
to the wastewater above the sludge layer. The baffles guide the gas bubbles towards
Bar screen
Lift station
Equalization tank
Anaerobic baffled
reactor (ABR)
Up-flow anaerobic
sludge blanket (UASB)
Sequencing batch
reactor (SBR)
Lamella clarifier
Cocopeat filter
Recycling to toilet for
flushing
Fig. 4.4 Process of fresh market wastewater in Muntinlupa city market
67
to build the small scale of wastewater treatment system that could be replicated in
other markets (PEN 2008; CAP 2011).
The system in Muntinlupa City Market consists of several process flows as shown
in Fig. 4.4. The system was located under the parking lot due to limited ground space
and was designed to treat up to 210 m
3 of fresh market wastewater per day. The bar
screen is located at each main inlet area to filter large floatable debris such as garbage,
fish or meat trimming before flowing to the lift station which is a simple chamber
containing aired automatic pumps to collect wastewater to the equalization tanks.
This equalization tank is the point that wastewater retention and allows relatively
constant flow of wastewater to proceed to the next chamber. After that, the wastewater
flows to the anaerobic baffled reactor which is the main treatment technology used for
this project. This multi chambered (this project used four chambers anaerobic baffled
reactor) is closed without natural air and the wastewater flows slowly up and back
down in the pipes, through the identical chambers, each time entering the chamber
at bottom, where it passes through the accumulated sludge. The settleable solids in
the sludge and anaerobic bacteria in the sludge degraded the harmful organic and
chemical components in wastewater (PEN 2008; CAP 2011).
The up-flow anaerobic sludge blanket is a single tank with baffled near the top of
wastewater level in which the wastewater flows upward through the blanket, and the
sludge was settling using gravity with the aid of flocculant. The sludge then decomposes by anaerobic bacteria. The degradation is methanogenic (methane produced)
and produces carbon dioxide. The bubbles rise upward and provide natural mixing
to the wastewater above the sludge layer. The baffles guide the gas bubbles towards
Bar screen
Lift station
Equalization tank
Anaerobic baffled
reactor (ABR)
Up-flow anaerobic
sludge blanket (UASB)
Sequencing batch
reactor (SBR)
Lamella clarifier
Cocopeat filter
Recycling to toilet for
flushing
Fig. 4.4 Process of fresh market wastewater in Muntinlupa city market