Wastewater from the building contains 30-40 mg/l of BOD. Its existing wastewater treatment unit is activated sludge, consists of flow equalizer, aeration and sedimentation.
Some times ago, the previous consultant had problem with sludge in the aeration tank - It became solid and had a smell...
To whom that may be able to give me a guide,
If I have 25 cubic metres per day of wastewater from toilet, what size of septic tank do I need?
Also, I would like to know what kind of septic tank you suggest, to deal with wastewater from kitchen whose characteristics is mainly consisted of...