What damage industrial wastewater can bring to the environment

1. Industrial wastewater directly flows into channels, rivers and lakes to pollute surface water, which will lead to the death or even extinction of aquatic animals and plants if it is highly toxic;

2. Industrial wastewater may also infiltrate into groundwater and pollute groundwater;

3. If the surrounding residents use polluted surface water or groundwater as domestic water, it will endanger health and cause death;

4. Industrial wastewater seeps into the soil, causing soil pollution. Affects the growth of microorganisms in plants and soil.

5. Some industrial wastewater also has an unpleasant stench and pollutes the air.

6. The toxic and harmful substances in industrial wastewater will be left in the body by the ingestion and absorption of animals and plants, and then reach the human body through the food chain, causing harm to the human body.

The damage to the environment caused by industrial wastewater is considerable, and the "Minamata Incident" and "Toyama Incident" of the "Eight Major Pollution Incidents" of the 20th century were caused by industrial wastewater pollution.

According to the main components of pollutants contained in industrial wastewater, it can be divided into acidic wastewater, alkaline wastewater, phenol-containing wastewater, chromium-containing wastewater, organic phosphorus-containing wastewater and radioactive wastewater. Generally, it will cause the deterioration of the water body, the dissolved oxygen in the water body will be greatly reduced, the life will die, and many pollutants will have color, odor or foam, and the appearance of disgust.

Entering water bodies, soil, and other receptors has adverse effects on organisms that depend on them for survival, and then indirectly affects people, such as drinking water safety, food safety, etc.

At present, the process flow of general industrial sewage treatment mainly includes:

1. If it is degreasing and degreasing wastewater, CaCl2 demulsifier can be appropriately added to remove the emulsified oil before air flotation. When the concentration of COD in the wastewater is high, anaerobic biochemical treatment can be used first, and aerobic biochemical treatment can be used if it is not high. Specific industrial wastewater treatment can refer to the following treatment process:

Wastewater, grease traps, conditioning tanks, air flotation equipment, anaerobic or hydrolytic acidification, aerobic biochemistry, precipitation, filtration or adsorption, discharge.

2. Pickling industrial sewage is usually produced when pickling and removing rust from steel and other parts, and the pH of wastewater is generally 2 3, and there is a high concentration of Fe2 and a high concentration of SS. This kind of industrial sewage treatment can refer to the following treatment processes: wastewater regulating tank, neutralization tank, aeration and oxidation tank, coagulation reaction tank, sedimentation tank, filtration tank, pH** tank discharge.

The treatment process of industrial wastewater is actually related to the selected process method, and the treatment process of different treatment processes is different

1. Reverse osmosis technology.

The efficiency of this technology is very high, the input cost is small, the operation is simple, and the process can be completed without too complex process, and the specific requirements for the process environment are not high, and it only needs to be operated at room temperature, which is because of so many points, so that reverse osmosis technology is widely used in industrial sewage treatment. Reverse osmosis technology has a wide range of applications, from the initial desalination to the later light industry and medical fields, the use of this method can be seen, has a high economic value.

2. Ion exchange resin technology.

This technology is also an emerging industrial sewage treatment method in recent years, and its significant feature is that it can well treat heavy metals in sewage. Ion exchange resins do not blend with any kind of acidic and alkaline solution, and can thoroughly filter any acidic and alkaline wastewater for heavy metals. The filtered sewage also needs to be treated by sodium sulfide, so that it can meet the compliance discharge standards, this technology applies the principle of chemistry, has a strong pertinence, and the sewage after the treatment of the technology can be used as cooling water again, which effectively improves the water quality and improves the utilization rate of water resources.

3. Biological treatment technology.

When we treat sewage, we not only have to dispose of those visible impurities, but also treat some invisible organisms and microorganisms, so many companies use biological treatment technology for industrial wastewater treatment.

Treatment of industrial wastewater: solve the problem of enterprise water use, reduce the amount of production wastewater, most of the enterprises have introduced advanced industrial wastewater treatment equipment, and the wastewater discharged from the factory is processed, so it effectively separates the harmful organic and inorganic substances in the water and the oil in the water.

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1.affect the survival of animals in the water (such as fish and shrimp), and seriously lead to their death;

2.Affecting the quality of groundwater, causing humans to get sick after drinking contaminated water;

3.Affect environmental sanitation The sewage discharged has a foul smell, which will attract a lot of mosquitoes and flies, and affect the quality of life of people living in these areas;

4.The sewage discharged by chemical companies contains a lot of chemicals, and the water cannot be used for drinking, even for watering vegetables, which brings many difficulties to the reuse of water resources.

1. Cause acute and chronic poisoning.

Water bodies can be poisoned through drinking water or the food chain when they are contaminated with toxic and harmful chemicals. Minamata disease and pain disease are commonly caused by water pollution.

2. Carcinogenic. Long-term consumption of carcinogenic water or consumption of organisms (e.g. fish) that accumulate carcinogens in the body may cause cancer.

3. Indirect impact.

When water is polluted, it often worsens the organoleptic properties of the water. For example, although certain concentrations of pollutants do not directly harm human health, they can cause water to produce odors and colors, foam and oil films, etc., which hinder the normal use of water bodies.

Industrial wastewater refers to the wastewater, sewage and waste liquid produced in the industrial production process, which contains industrial production materials, intermediate products and products that are lost with water, as well as pollutants generated in the production process. With the rapid development of industry, the types and quantities of wastewater have increased rapidly, and the pollution of water bodies has become more extensive and serious, threatening human health and safety. Therefore, for the protection of the environment.

The treatment of industrial wastewater is more important than the treatment of municipal wastewater. Industrial water pollution.

It is the most important source of pollution to water bodies. It refers to the wastewater discharged by industrial enterprises that has been used in the production process. According to the nature of the pollutants, industrial wastewater can be divided into:

Contains organic wastewater, such as papermaking, sugar, food processing, dyeing and weaving industry wastewater; Contains inorganics.

wastewater, such as thermal power plants.

Hydraulic ash flushing wastewater, tailings water in the mining industry and coal washing water in the coal mining and coking industry, etc.; Wastewater containing toxic chemical substances, such as chemical, electroplating, smelting and other industrial wastewater; Industrial wastewater containing pathogens, such as biological products, tanning, slaughterhouse wastewater; Wastewater containing radioactive materials, such as wastewater from nuclear power plants, radioactive mines, and nuclear fuel processing plants; Cooling water for production.

Such as thermal power plants, steel mill wastewater. The harm of industrial water pollution is very great: industrial wastewater directly flows into channels, rivers and lakes to pollute surface water, and if it is toxic, it will lead to the death or even extinction of aquatic animals and plants; Industrial wastewater can also seep into groundwater, pollute groundwater, and then pollute crops; If the surrounding residents use polluted surface water or groundwater as domestic water, it will endanger health and death; Industrial wastewater seeps into the soil, causing soil pollution.

Affects the growth of microorganisms in plants and soil. Toxic and harmful substances in industrial wastewater can be ingested and absorbed by animals and plants, and then passed through the food chain.

It reaches the human body and causes harm to the human body.

China's approach to nuclear wastewater:

1. If the amount is not large, as long as the emission is controlled, tritium and water can be directly evaporated.

2. Landfill the remaining solid waste, but tritium may pollute the air.

3. Suck out the solid waste first through adsorption, and after sucking it out, the solid waste is still taken to landfill, and then the remaining wastewater is directly discharged into the sea, or stored in a tank for a while.

4. The purpose of wastewater treatment is to separate the pollutants in the wastewater in a certain way, or decompose them into harmless and stable substances, so that the sewage can be purified.

5. Generally, it is necessary to prevent the infection of poisons and germs; Avoid visible objects with foul smell and bad sensation to meet the requirements of different uses.

6. Wastewater treatment is quite complex, and the selection of treatment methods must be considered according to the quality and quantity of wastewater, and the use of the receiving water body or water discharged to it.

At the same time, it is also necessary to consider the treatment and utilization of sludge and residue generated in the wastewater treatment process and the possible secondary pollution problems, as well as the utilization of flocculants.

Pollution from industrial wastewater:

Organic aerobic substance pollution, chemical poison pollution, inorganic solid suspended solids pollution, heavy metal pollution, acid pollution, alkali pollution, plant nutrient pollution, heat pollution, pathogen pollution, etc.

Many pollutants have color, odor or easy foam, so industrial wastewater often presents a disgusting appearance, causing large-scale pollution of water bodies, directly threatening the lives and health of the people, so it is particularly important to control industrial wastewater.

The above content refers to Encyclopedia - Industrial Wastewater.

1. Wastewater, which includes domestic sewage, industrial wastewater and other non-water such as early rain runoff flowing into drainage pipes and canals, generally refers to water that cannot be recycled after certain technical treatment or is purified after a mass of pollution.

2. It is mainly the water after daily use, which contains more organic matter and is easier to treat.

2) Pollution is different:

1. The damage of industrial wastewater to the environment is considerable, and the "Minamata Incident" and "Toyama Incident" in the "Eight Major Pollution Incidents" in the 20th century are due to the pollution of industrial wastewater.

2. Industrial wastewater comes from the sewage from manufacturing mining and industrial production activities, including runoff live leachate from industrial or commercial storage and stove processing, and other wastewater that is not domestic sewage.