ANALYSIS OF EFFICIENCY OF HOUSEHOLD AND INDUSTRIAL WASTE WATER TREATMENT ON THE EXAMPLE OF TREATMENT FACILITIES OF ORENBURG CITY СтатьяKnyazeva L.N., Knyazeva A.N.ECO SAPIENS - экологическое сознание человека XXI века в науке, образовании и обществе = Eco Sapience - Ecological Consciousness of the 21st Century Human in Science, Education & Society. 2019. С. 77-82