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| Anaerobic Baffled Reactor |
Anaerobic Baffled Reactor:
The Baffled Reactor consists of a series of chambers in which waste water flows upstream. At the bottom of each chamber, activated sludge is retained. During inflow into the chamber, the waste water is intensively mixed with the sludge whereby it is inoculated with waste water organisms which decompose the contained pollutants.
The BOD reduction rate of baffled reactor is about 75 - 85%. The pathogen reduction is in the range of 40 - 75%. The operation and maintenance is simple and no open space is eaten up as it is a sub-soil construction. Desludging is needed only if excess sludge (activated) is generated.
Anaerobic Fixed Bed Filters:
The process applies anaerobic organisms for degradation of waste water
pollutants. The design is based on continuous upstream flow process, wherein
the wastewater passes through a series of chambers through the filter
material made out of gravel, slag or plastic elements. Filter media helps
increase surface area for active bacteria.
Reduction of BOD is about 70%. The Anaerobic Filter can be integrated with the Baffled Reactor. Efficiency is between 75% - 90%. Desludging is needed only if excess sludge (activated) is generated.
The Baffled Reactor consists of a series of chambers in which waste water flows upstream. At the bottom of each chamber, activated sludge is retained. During inflow into the chamber, the waste water is intensively mixed with the sludge whereby it is inoculated with waste water organisms which decompose the contained pollutants.
The BOD reduction rate of baffled reactor is about 75 - 85%. The pathogen reduction is in the range of 40 - 75%. The operation and maintenance is simple and no open space is eaten up as it is a sub-soil construction. Desludging is needed only if excess sludge (activated) is generated.
Anaerobic Fixed Bed Filters:
The process applies anaerobic organisms for degradation of waste water
pollutants. The design is based on continuous upstream flow process, wherein
the wastewater passes through a series of chambers through the filter
material made out of gravel, slag or plastic elements. Filter media helps
increase surface area for active bacteria. Reduction of BOD is about 70%. The Anaerobic Filter can be integrated with the Baffled Reactor. Efficiency is between 75% - 90%. Desludging is needed only if excess sludge (activated) is generated.
Planted Horizontal
Gravel Filter:
The Horizontal gravel filter is made of reed planted filter bodies consisting of fine gravel. The filter is permanently soaked in water.
The
normal depth is 60cm. The main removal mechanisms are biological conversion,
physical filtration and chemical adsorption. Mechanisms of BOD removal are
mainly aerobic and anoxic. The function of PHGF is mostly post treatment
(smell and colour of water) and it can be substituted by planted dispersion
trenches.
As an indicator module a polishing pond can be provided after the HGF. The main purpose of the pond would be oxygen enrichment and elimination of pathogen germs through sun's radiation. Floating aquatic plants can help control algal growth and make it a pleasant landscape feature if desired.
The Horizontal gravel filter is made of reed planted filter bodies consisting of fine gravel. The filter is permanently soaked in water.
The
normal depth is 60cm. The main removal mechanisms are biological conversion,
physical filtration and chemical adsorption. Mechanisms of BOD removal are
mainly aerobic and anoxic. The function of PHGF is mostly post treatment
(smell and colour of water) and it can be substituted by planted dispersion
trenches.
As an indicator module a polishing pond can be provided after the HGF. The main purpose of the pond would be oxygen enrichment and elimination of pathogen germs through sun's radiation. Floating aquatic plants can help control algal growth and make it a pleasant landscape feature if desired.
Usage and maintenance of DEWATS [Operation and Maintenance-
WEEKLY ONCE]
1. Check each control tank at the communal piping system
2. Removal of solid waste/ scum from ABR chamber using a shovel and spatula
3. There will not be proper water flow to control tank if the pipe before it is clogged/broken.STOPusing the system,OPEN passage and get the leaks fixed
4. If the pipe after the control tank is clogged, there will an overflow. STOP using the system,CLEARthe passage
5. Collect all removals, put solid waste and scum in bags, bring them to garbage collection point The periodical maintenance will be once in 3 - 5 years
6. To check the Biogas outlet to make sure there in no leakage.
1. Check each control tank at the communal piping system
2. Removal of solid waste/ scum from ABR chamber using a shovel and spatula
3. There will not be proper water flow to control tank if the pipe before it is clogged/broken.STOPusing the system,OPEN passage and get the leaks fixed
4. If the pipe after the control tank is clogged, there will an overflow. STOP using the system,CLEARthe passage
5. Collect all removals, put solid waste and scum in bags, bring them to garbage collection point The periodical maintenance will be once in 3 - 5 years
6. To check the Biogas outlet to make sure there in no leakage.
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