Addis Ababa Water and Sewerage Authority (AWSSA) is installing 10 mobile waste treatment plants with 759 million Birr at seven condominium sites, according to Addis Fortune.

The Kality site refines 7,500 cubic meters a day. There are two other smaller plants which are under design. These include an eastern site at Yerer, which is expected to treat 180, 000 cubic meters of liquid waste a day. The Akaki site, composed of two smaller sites; Cheffe and south Akaki, is additionally under design with 24,000 cubic meters and 50,000 cubic meters of capacity at each plant.

The introduced mobile plants use a biological technology called Membrane Bio Reactor (MBR), a containerized system that refines waste electromagnetically. The treated water will be transferred to underground pools and reused for other purposes. The MBR units will add 20,000 cubic liters of treatment capacity to the existing 7,500 cubic liters.

Jemila Mohammed, Sewerage Treatment & Reuse Sub Process head at AWSSA said using stabilizer ponds takes longer time and is less effective in terms of quality, but the MBR refining system is more efficient and meets the standard of the Environmental Protection Authority to release treated liquid waste in to rivers.

The system is well advanced and 100 percent effective in purifying, making the end product free from bacteria and ready for reuse. Moreover, it uses less land, unlike the stabilizer ponds, Jemila explained. It does not also produce bad smell at operation.

Civil works of the stations are undertaken by a local company, Jemal Ahmed General Contractor. And portable liquid waste refinery containers are on arrival at the Djibouti Port and delivery will be completed by September 2015.

Source: Addis Fortune