• Treatment of household sewage and swimming pool water.
• A compact, modular, underground facility developed as a multi-chamber tank made of reinforced concrete, partly covered by slabs made of plastic.
• External dimensions of the wastewater treatment plant: length: 32.55 m, width: 5.36 m, height: 3.50 m.
• The average daily flowthrough: 125.26 m3/d (household sewage being only a quarter of the amount).
• The side of the plant in relation to BOD5: 930 PE.
• Apart from typical sanitary sewage, the sewage mix contains large quantities of chlorides, sulphates and sodium, coming from geothermal water used in the swimming pools and the Termy Celejów SPA.
• The plant operates using the submerged biological system with gravity flow.
• Treatment is done using a preliminary settling tank, two parallel, two-stage bioreactors and two secondary settling tanks.
• Phosphorus removal is enhanced by a coagulant added to secondary settling tanks.
• Sludge accumulates in a storage tank – a digester.
• Considering the proximity of the recreational complex, the wastewater treatment plant has an active neutraliser that removes odorous substances from the air.
• The correct level of impurities removal: TSS: 95%, BOD5: 97%, COD: 94%. Treated wastewater outflow is measured by an electromagnetic flow meter.

Celejów – technological scheme