Presently there is a separated sewerage system in Baku. Sewerage system is consists of very few ceramic, concrete, asbestos-cement, cast iron, reinforced concrete pipes and tunnel-shaped collectors. The total length of economical and domestic sewerage lines is 1500 km. The diameter of distribution sewerage lines is 150-200 mm, the diameter of street lines and collectors is changed between 300 and 4000 mm. Besides it, presently there is a rain sewerage lines with the length of 156 km in Baku. The diameter of rain transmission main is changed between 400 and 1200 mm.
The total capacity of wastewater discharged from sewerage lines is more than 1 mln m3.The total capacity of 72 Sewerage Pumping Stations is 1 mln m3 per day.
Wastewater Treatment Plants in Baku
Hovsan biological treatment plants – with the capacity of 640 thousand m3/ day
Sahil biological treatment plants – with the capacity of 17.5 thousand m3/ day
Buzovna biological treatment plants - with the capacity of 10 thousand m3/ day
Zig mechanical treatment facilities - with the capacity of 70 thousand m3/ day
Khojassan mechanical treatment facility –with the capacity of 18.6 thousand m3/ day
Shuvelan mechanical treatment facilities - with the capacity of 18.6 thousand m3/ day