Sakha wastewater treatment plant
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The Sakha treatment plant supplies recycled water for landscape irrigation and recovers the sewage sludge at the same plant to extract fertilizers and biogas thus completing the virtuous cycle. The sludge is anaerobically digested to produce biogas. Transforming sludge into biogas (a source of green energy) gives value to previously deemed harmful materials, which comply with environmental regulations. The combustion of biogas produces a large amount of electricity needed to run the plant or to be sold to the local grid.
The amount of waste water received by the treatment plants is 27.000 cubic metres per day. The treatment plant produces 15.000 KW/h of electricity and 81.000 cubic metres of fertiliser. It provides recycled water for landscape irrigation and the sludge is recovered at the same plant to extract fertiliser and biogas.
Sakhra WWTP is located in the governorate of Kafr el-Sheikh and it is considered a best practice considering the innovative technology in the circular economic context.
Fig. 1: Wastewater Treatment Plant process