GB 21901-2008
Discharge standard of water pollutants for down industry (English Version)

Standard No.

GB 21901-2008

Language

Chinese, Available in English version

Release Date

2008

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB 21901-2008

Scope

This standard specifies the discharge limits of water pollutants for down enterprises or production facilities. This standard is applicable to the management of water pollutant discharge of existing down enterprises or production facilities. This standard applies to the environmental impact assessment, environmental protection facility design, completion environmental protection acceptance and water pollutant discharge management of feather industry construction projects. This standard applies to the discharge of pollutants permitted by law. The site selection of newly established pollution sources and the management of existing pollution sources in special protection areas shall be in accordance with the Law of the People's Republic of China on the Prevention and Control of Air Pollution, the Law of the People's Republic of China on the Prevention and Control of Water Pollution, and the Law of the People's Republic of China on Marine Environmental Protection. The Law of the People's Republic of China on the Prevention and Control of Environmental Pollution by Solid Waste, the Law of the People's Republic of China on the Prevention and Control of Radioactive Pollution, the Law of the People's Republic of China on Environmental Impact Assessment, and other laws, regulations, and rules are implemented. The water pollutant discharge control requirements stipulated in this standard are applicable to the discharge behavior of enterprises to environmental water bodies. When an enterprise discharges wastewater into the urban drainage system with a sewage treatment plant, the pollutant discharge control requirements shall be agreed upon by the enterprise and the urban sewage treatment plant according to its sewage treatment capacity or the relevant standards shall be implemented, and reported to the local environmental protection authority for record; urban sewage The treatment plant should ensure that the discharged pollutants meet the requirements of the relevant discharge standards. When a construction project intends to discharge wastewater into the urban drainage system with a sewage treatment plant, the construction unit and the urban sewage treatment plant shall implement the provisions of the preceding paragraph.

GB 21901-2008 Referenced Document

• GB/T 11893-1989 Water quality--Determination of total phosphorus--Ammonium molybdate spectrophotometric method
• GB/T 11894-1989 Water quality--Determination of total nitrogen--Alkaline potassium persulfate digestion-UV spectro photometric method
• GB/T 11901-1989 Water quality--Determination of suspended substance--Gravimetric method
• GB/T 11914-1989 Water quality--Determination of the chemical oxygen demand--Dichromate method
• GB/T 16488-1996 Water quality--Determination of petroleum oil, animal and vegetable oils--Infrared photometric method
• GB/T 6920-1986 Water quality--Determination of pH value--Glass electrode method
• GB/T 7478-1987 Water quality--Determination of ammonium--Distillation and titration method
• GB/T 7479-1987 Water quality--Determination of ammonium-Nessler's reagent colorimetric method
• GB/T 7481-1987 Water quality--Determination of ammonium--Spectrophotometric method with salicylic acid
• GB/T 7488-1987 Water quality--Determination of biochemical oxygen demand after 5 days(BOD5)--Dilution and seeding method
• GB/T 7494-1987 Water quality--Determination of anionic surfactants--Methylene blue spectrophotometric method
• HJ/T 195-2005 Water quality - Determination of ammonia-nitrogen Gas-phase molecular absorption spectrometry
• HJ/T 199-2005 Water quality Determination of tota-nitrogen Gas-phase molecular absorption spectrometry
• HJ/T 399-2007 Water quality- Determination of the chemical oxygen demand - Fast digestion-spectrophotometric method

GB 21901-2008 history

• 2008 GB 21901-2008 Discharge standard of water pollutants for down industry