Integrated Discharge Standard for Industrial Wastewater
Waste water refers to the residents in the course of the activities of the discharge of water and runoff in general. It includes domestic waste water, industrial waste water and the beginning of the rain runoff into the drainage pipes and other non-use of water, generally refers to no use or no value in water.
What are the hazards of wastewater:
1, the industrial wastewater directly into the channels, rivers, lakes pollution of surface water, if the toxicity of aquatic animals will lead to death or even extinct
2, industrial wastewater may also penetrate into groundwater, polluting groundwater;
3, if the surrounding residents to be contaminated with surface water or groundwater as a living water, will endanger the health and death;
4, industrial wastewater infiltration into the soil, causing soil pollution. Affecting plant and soil microbial growth.
5, some industrial waste water with unpleasant odor, pollute the air.
6, the industrial waste water toxic and harmful substances will be animal and plant feeding and absorption of residues in the body, and then through the food chain to reach the human body, causing harm to the human body.
Wastewater treatment methods are the following:
A physical or mechanical separation process. Filtration, precipitation, centrifugal separation, floating and so on.
Chemical method: the chemical substances into the sewage and hazardous substances in the chemical reaction of the conversion process. Neutralization, oxidation, reduction, decomposition, coagulation, chemical precipitation and so on.
Physical chemistry: the separation process of physical chemistry. Stripping, adsorption, extraction, ion exchange, electrodialysis, reverse osmosis and so on.
The metabolic process by which microorganisms oxidize and decompose organic matter in sewage. Activated sludge, biological filter, biological turntable, oxidation pond, anaerobic digestion.
Integrated Wastewater Discharge Standard:
Integrated Wastewater Discharge Standard 1.1 Standard Classification
1.1.1 Discharge into GB3838 Class III waters (except designated protected areas and swimming areas) and discharged into GB3097 in the second class of waters, the implementation of a standard.
1.1.2 discharged into the GB 3838 in Ⅳ, Ⅴ waters and discharged into GB3097 three types of waters in the waters, the implementation of two standards.
1.1.3 discharged into the secondary sewage treatment plant in the urban drainage system of sewage, the implementation of three standards.
1.1.4 Wastewater discharged into a town drainage system without a secondary sewage treatment plant shall be subject to the provisions of 4.1.1 and 4.1.2, respectively, in accordance with the functional requirements of the water receiving area of the drainage system.
1.1.5 GB3838 in Ⅰ and Ⅱ waters and Class III waters in the designated areas, GB3097 in a class of sea areas, the ban on new sewage outfall, the existing sewage outfall should be functional requirements of water bodies, the implementation of total pollutant control to To ensure the acceptance of water quality in line with the use of water quality standards. See http://www.dowater.com for more details.
Integrated Wastewater Discharge Standard 1.2 Standard Value
1.2.1 This standard classifies the pollutants discharged into two categories according to their nature and control mode.
188.8.131.52 The first type of pollutants, regardless of the type of industry and effluent discharge, or the functional category of the receiving water body, shall be sampled at the discharge port of the workshop or workshop treatment facility, and the maximum permissible emission concentration shall meet the requirements of this standard (mining Industry tailings dam outlet outlet shall not be regarded as workshop).
184.108.40.206 The pollutants of the second category shall be sampled at the discharge port of the discharge unit, and the maximum permissible emission concentration shall meet the requirements of this standard.
220.127.116.11 The construction time of the construction (including renovation and expansion) shall be divided according to the date of approval of the environmental impact assessment report (table).
Integrated Wastewater Discharge Standard 1.3 Other Provisions
1.3.1 The same discharge port discharge two or more different types of sewage, and each sewage discharge standards are not the same, the mixed sewage discharge standards in Appendix A calculation.
1.3.2 The maximum allowable discharge load of industrial sewage pollutants shall be calculated in accordance with Appendix B.
1.3.3 The maximum permissible annual discharge of pollutants shall be calculated in accordance with Appendix C.
1.3.4 for the discharge of sewage containing radioactive substances, in addition to the implementation of this standard, but also in line with GB8703-88 "radiation protection requirements."