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Discharge standard of industrial wastewater and calculation of industrial wastewater discharge

2017-08-14 16:37:08    

With the increasing pressure of water pollution, it is the development trend of pollution control in our country to promote the discharge and treatment standards of industrial wastewater in an orderly way and increase the intensity of pollution control. Although the State Environmental Protection Department has been vigorously promoting energy-saving emission reduction, and the unqualified sewage treatment plants take measures, in the hope of improving the sewage treatment rate, improve the sewage discharge standard, so as to reduce environmental pollution. However, many enterprises are only in order to cope with the inspection, and did not really implement. Then what are the standards for industrial wastewater discharge and how should they be calculated?
The sewage discharge standard is according to the water quality of receiving water requirements, combined with the characteristics of the environment and the social, economic and technological conditions, the control standard of harmful factor of water pollutants in the wastewater discharged into the environment and have made. There are many standards, including national emission standards, local discharge standards and industrial emission standards.

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1. national emission standards
The national emission standards is the national environmental protection administration departments to formulate and nationally or within a specific area of applicable standards, such as "People's Republic of China integrated wastewater discharge standard" (GB8978--1996) for the country.
2. local emission standards
Local discharge standards shall be promulgated and promulgated by the people's governments of provinces, autonomous regions and municipalities directly under the central government, and shall be applicable in specific administrative areas. Such as the Shanghai municipal wastewater comprehensive discharge standard (DB31/199-1997) applies to the scope of Shanghai city.
3. industry standards
At present our country allows the papermaking industry, shipbuilding industry, marine petroleum development industry, textile industry, meat processing industry, iron and steel industry, synthetic ammonia industry, aerospace propellants, weapons industry, fertilizer industry, caustic soda, PVC industry and the 12 industry categories, not the implementation of national integrated wastewater discharge standard, can implement the corresponding industry standard.
Prediction and discharge standard of wastewater quality:
1., the composition of landfill waste is very complex and it is difficult to estimate the water quality of the seep. But in the hazardous waste landfill site shall comply with the "hazardous waste landfill pollution control standard" (GB 18598-2001) in "hazardous waste landfill is allowed to enter the control limits, therefore, in order to limit as leachate.
2. washing water and laboratory wastewater in the workshops are mainly used to flush the ground, equipment and test vessels, and the sewage contains some heavy metals. Except for SS, the concentration of pollutants in sewage is 20% of the concentration of leachate.


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