Anaerobic Baffled Reactor

Collection Chamber: The sludge from toilets is emptied into the collection chamber using motorized equipment such as robin pump.The inlet chamber has a capacity of 10000 liters. Sludge inlet process regulated by a gate valve. Up-flow Filtration Chamber: There is a concrete structure with 6 segments/chambers,where consists up-flow filtration prcoess actually. The chambers are interconnected in a baffled system, with up-flow movement trapping solid sludge at the bottom while allowing liquid to rise through the filter media to the next chamber. Constructed Wetland: The constructed wetland/fitration bed is a shallow trench lined with waterproof tarpaulin. It contains stone beds and kolaboti plants. With a capacity of at least 6 m3, it allows effluent to pass through. Microbial content in the effluent forms gelatin, while plant roots reduce pathogenic organisms. The effluent has a maximum retention time of 5 days . Drying bed: The solid sludge need to cut after 25-30 days from ABR and these are stored in drying bed for treatment purpose.We usually using hydrate lime for disinfection purpose during drying solid sludge.

Actually, This anaerobic baffled reactor is designed by Ngo forum for public health.Now,it is operated by Caritas Bangladesh.

This anaerobic baffled reactor is constructed by Ngo Forum for public health and now, it is operated by Caritas Bangladesh.

Collection: The sludge from toilets is emptied into the intermediate sludge tank using motorized equipment such as a Robin pump. Workers use PPE(Personal Protective Equipment) during sludge collection. Transportation: There are using 8 nos intermediate sludge tanks(capacity-5000 liters/tank) for sludge storage from the latrine's pit and sludge transferring purposes. Emptied sludge is transferred into the Fecal sludge treatment site/Aneraobic baffled reactor through a tank-to-tank transferring process by using a pump. Inlet Chamber: .The inlet chamber has a capacity of 10000 liters. The sludge inlet process is regulated by a gate valve. Up-flow Filtration Chamber: There is a concrete structure with 6 segments/chambers,where consists up-flow filtration prcoess actually. The chambers are interconnected in a baffled system, with up-flow movement trapping solid sludge at the bottom while allowing liquid to rise through the filter media to the next chamber. Constructed Wetland: The constructed wetland/filtration bed is a shallow trench lined with waterproof tarpaulin. It contains stone beds and kolaboti plants. With a capacity of at least 6 m3, it allows effluent to pass through. Microbial content in the effluent forms gelatin, while plant roots reduce pathogenic organisms. The effluent has a maximum retention time of 5 days. Drying bed: The solid sludge need to cut after 25-30 days from ABR and these are stored in drying bed for treatment purpose.We usually using hydrated lime for disinfection purpose during drying solid sludge. FSM worker's shower: There is a shower in each FSM site ,it is using for cleaning purposes regularly after finishing fecal sludge management works.

1. All data must be preserved. 2. Chemical parameter should be tested and analysed. 3. ABR FSM was found to be environment friendly and there is acceptance from the community people as no odour is found in the surroundings

1. Closely monitoring Anaerobic Baffled Reactor technology with Technical staffs. 2. All relevant records are updated. 3. Assigned skilled operators for functioning technologies. 4. Well-maintained WASH sector guidelines regarding fecal sludge management. 5. Strongly maintained personal protective equipment during fecal sludge management activities.

1. Lack of wastewater testing kit. 2. Shortage of land at the Sludge treatment site.