Yan'an City, Huangling County, what standards for sewage discharge

Industrial units of sewage implementation of "comprehensive sewage discharge standards" GB8978-1996, paper, shipbuilding, offshore oil, textiles, meat, ammonia, steel, aerospace, weapons, phosphate fertilizer, caustic soda industry except.

Discharged into GB3838 Class III waters (outside the delineation of protected areas and swimming areas), the implementation of the standard (Waters III: mainly applies to the two protected areas of centralized drinking water sources of surface water, fish and shrimp winter farms, migratory corridors, aquaculture area? Fishery waters and swimming areas);

Two standards GB3838 VI Class V (Waters VI mainly applies to general industrial water and the human body is not directly discharged into the waters in contact with recreational water areas, Class V water mainly applies to the area? Agricultural water and general landscape requirements waters);

Discharged from the hospital set up a secondary sewage treatment plant, urban sewage drainage system, the implementation of the three standards.

Municipal sewage treatment plant wastewater implementation of urban sewage treatment plant pollutant discharge standards "GB18918-2002

Grade standards are divided into A and B standard standards, municipal sewage treatment plant effluent discharged into the national province has been identified as a key watersheds, lakes, reservoirs, as well as other closed or semi-enclosed waters, the implementation of the standard A standard GB3838 surface water Ⅲ functional waters

Discharge into the implementation of a standard B standard.

The secondary standard of water discharged into GB3838 VI implementation of Class V waters;

Three standards for non-focused control of watersheds and water source protection areas of urban sewage treatment plants, according to the local economic conditions and water pollution control requirements, the use of enhanced primary treatment industry implementation. However, the location of secondary treatment facilities must be reserved for the stage of secondary standards.