RECONSTRUCTION OF ZEYA CITY TREATMENT FACILITIES
the existing technological scheme of treatment facilities in Zeya isinvestigated. Treatment facilities are maintained since 1982.Now the expense of sewage is considerably reduced. Efficiency of clearing se- wage on 9 indicators from 14 confirmed doesn't correspond to specifications of admiss- ible dump in superficial water object of the river Zeya. The typical design technology of clearing doesn't allow reaching them. In present time treatment facilities have physically become outdated.The accepted modern technology combining methods of aerobic and anaerobic oxidation, allows removing from sewage biogene pollution. Introduction of half-internal modules in constructions allows carrying out the reconstruction providing effective ni- tri-denitrifikatsiju without building of additional volumes aerotanks. As disinfecting the method of ultra-violet disinfection is used.Technical and economic indicators of reconstruction of water removal system in Zeya are defined. The estimation of environment state is made and actions for its im- provement are offered.