Activated sludge waste-water purifier - combining blower aeration and stabilizing vessels in a single underground tank

摘要

Domestic or industrial waste water, is treated in order that it may be discharged as an effluent without pollution hazard, in pref. a cylindrical underground tank, divided into an aerating section, and a stabilising section, and separated by a partition penetrated by a pipe leading to the liq. surface. The installation pref. has a manhole, covered by a metal grid, which provides access to the blower and both sections of the tank. Water is fed to one end of tank in aeration section, and pure water is recovered via perforated surface collection pipes. The unit may be installed close to residences, is not noisy and is not susceptible to contamination with vegetation etc.