Environmental quality standards for domestic sewage, domestic sewage discharge standards

Harm of Water Pollution to Aquatic Life A wide variety of aquatic animals and plants live in the water. Organisms and water, organisms and organisms exchange complex materials and energy, and maintain a dynamic equilibrium relationship in terms of quantity. But under the influence of human activity, this balance has been disrupted.

When humans discharge pollutants into the water, some beneficial aquatic organisms will be poisoned and die, while some pollution-tolerant aquatic organisms will intensify their reproduction, consume a large amount of oxygen dissolved in the water, and make the beneficial aquatic organisms forced to move to other places due to lack of oxygen, or die. In particular, some toxic elements are insoluble in water and easy to accumulate in living organisms, causing great harm to human beings. For example, the amount of mercury in water is very low, but the content in aquatic organisms is very high, and the content in fish is surprisingly high.

Assuming a mercury concentration of 1 in the water body, the concentration of mercury in benthic organisms (i.e., small organisms living in the sediment of the water body) in aquatic organisms is 700, while the concentration of mercury in fish is as high as 860. It can be seen that when the water body is polluted, on the one hand, it leads to the destruction of the balance between organisms and water, and between organisms, and on the other hand, some toxic substances continue to transfer and enrich, and finally endanger the health and life of human beings. III. The Impact of Water Pollution on Industrial and Agricultural Production Industrial and agricultural production not only requires sufficient water quantity, but also has certain requirements for water quality.

Otherwise, it will cause great losses to industry and agriculture, especially after the use of polluted water in the process of industrial and agricultural production, it will be extremely harmful to human beings. First, the industrial equipment is damaged, which seriously affects the quality of products. The second is to change the chemical composition of the soil and reduce its fertility, resulting in reduced crop yields and serious pollution.

The third is to increase the cost of sewage treatment for domestic and industrial water in cities.

Hello, the environmental quality standards of domestic sewage should be tested and evaluated by professional departments, which is the most professional and authoritative, thank you.

The environmental quality standard of domestic sewage is obvious, and there is a quality standard on the side of the Environmental Protection Bureau, and it is enough to refer directly to this standard.

The standard of domestic sewage environmental indicators is a must, and this index standard is generally at the provincial level, and he will only have a living index next month for the sewage that standard discharge.

This standard of domestic sewage, he has an inventory inspection, and then contains some things.

Surface Water Environmental Quality Standard GB8703-88 Surface Water Environmental Quality Standard GB8703-88 Radiation Protection Regulations 3 Definition Wastewater: refers to the water discharged in production and living activities.

I think the environmental quality standards of my house water are very high, and it is a standard environment.

The standard of water is to put the environmental quality in the position of the standard, to put it in the first place, so as not to affect our environment.

Living its sewage, its environmental quality standards are still very strict, I think this is also a better choice for us.

The standard of domestic sewage environment is mainly to see whether the black stone is discharged? And is there a change that now?

The environmental standards for this kind of domestic sewage can refer to the national standard and then compare the indicators.

This needs to be combined with the local water environment quality, and there are grading and classification standards.

In fact, I think the quality standard of the sewage environment is quite high.

Biochemical pollution environmental pledge standard, always feel that their living water environment is very good, if you know how much the quality of the newspaper is, you can look at the mobile phone.

No, try not to talk about this anyway, everyone else will want it, it's better every week, and then this.

The environmental quality of domestic sewage is generally passable. inspection standards to inspect.

Water pollutant discharge standards are often referred to as sewage discharge standards, which are based on the water quality requirements of the receiving water body, combined with environmental characteristics and social, economic and technical conditions, the control standards for water pollutants and harmful factors in wastewater discharged into the environment, or the allowable discharge (concentration) or limit of water pollutants or harmful factors. It is the basis for determining whether the pollutant discharge activity is illegal. Sewage discharge standards can be divided into:

National emission standards, local emission standards and industry standards.

Legal basis: Law of the People's Republic of China on the Prevention and Control of Water Pollution, Article 12 It is forbidden to discharge sewage into the water bodies of domestic drinking water sources and first-class protection zones. The sewage outlets that have been set up should be dismantled or treated within a time limit. No new sewage outlets shall be built in the protected areas of drinking water sources, water bodies in scenic spots, important fishery water bodies and other water bodies with special economic and cultural value.

When a new sewage outlet is built near a protected area, it is necessary to ensure that the water body in the protected area is not polluted.

Legal analysis: The sewage treatment water quality testing standard is GB3097-97 seawater quality standard GB3838-02 surface water environmental quality standard GB8703-88.

Legal basis: "Regulations on the Implementation of the Standardization Law of the People's Republic of China" Article 6 The standardization administrative department shall manage the national standardization work in a unified manner and perform the following duties: (1) Organize and implement the laws, regulations, guidelines and policies of the state on standardization work; (2) Organize the formulation of national standardization work plans and plans; (3) Organize the formulation of national standards; (D) to guide the standardization work of the relevant administrative departments and the people's standardization administrative departments of provinces, autonomous regions and municipalities directly under the Central Government, and coordinate and deal with the relevant standardization issues; (5) Organize and implement standards; (6) Supervise and inspect the implementation of standards; (7) Unified management of the national product quality certification work; (8) Responsible for the business contacts with the relevant international standardization organizations.

Legal Analysis: This standard stipulates the pollutant limits for effluent, exhaust gas discharge and sludge disposal (control) of urban sewage treatment plants. This standard is applicable to the management of effluent, exhaust gas discharge and sludge disposal (control) of urban sewage treatment plants.

The discharge management of pollutants from independent domestic sewage treatment facilities in residential areas and industrial enterprises shall also be implemented in accordance with this standard.

Legal basis: "Law of the People's Republic of China on the Prevention and Control of Water Pollution" Article 3: The prevention and control of water pollution shall adhere to the principles of prevention first, prevention and treatment combined, and comprehensive treatment, giving priority to the protection of drinking water sources, strictly controlling industrial pollution and urban life pollution, preventing and controlling agricultural non-point source pollution, actively promoting the construction of ecological treatment projects, and preventing, controlling, and reducing water environmental pollution and ecological damage.