What happened to the blackening of 20 km beach in Zhanjiang, Guangdong? Recently, residents of Wuchuan, Zhanjiang, Guangdong Province reported that a large amount of untreated shrimp tail water has been discharged directly for many years, which has seriously polluted the marine environment and turned the Gold Coast into a black beach. On this 20-kilometer-long coastline, shrimp ponds are densely covered. Sewage flowing in ditches along the beach has different colors. Some are as dark as ink, the oil is smelly, and some are as green as algae. Cloudy yellow, with strong ammonia nitrogen flavor. According to the reporter's investigation, there are nearly 100 sewage ditches, sewage outlets and sewage pipes along the coastline.
Farmers said that the relevant units have no strict requirements for tail water discharge. Farmers did not install sewage treatment equipment. In addition to the lack of environmental awareness, it is important not to bear the cost of reproduction.
Zhanjiang Gold Coast 1 How to treat sewage? Physical treatment in short, this method is effective separation through physical action, so that insoluble substances in sewage can be separated without changing their chemical properties during treatment. The most common method is gravity separation or reverse osmosis, or other separation methods. Physical therapy is relatively simple and economical. Basically, this sewage treatment method can be considered as the best treatment method and can be applied to various sewage treatments. Is there a large amount of water or a large capacity?
2. Chemical treatment In actual treatment, many different chemical methods can be used for effective treatment. Through this treatment method, dissolved substances in sewage can be recovered, and it can also be used for the treatment of industrial wastewater. There are many common methods, including condensation or redox method and ion exchange method. When chemical treatment is carried out, this treatment is more efficient and more costly. Usually can be used for biochemical treatment. It can also improve the quality of wastewater.
3. Biological treatment. Relatively speaking, this treatment method uses the metabolism of microorganisms for treatment, which can decompose dissolved or colloidal organic matter in sewage, thus purifying sewage.
Marine pollution factor 1. Coastal industrial enterprises directly discharge sewage into the sea.
2. Rivers that flow into the sea, the company discharges sewage into the water bodies of these rivers.
3. As pollutants are discharged into the atmosphere to form acid rain, rainwater will enter the sea.
4. Overfishing destroys the ecological balance of the ocean.
5. The transport ship discards wastes, leaks pollutants and leaks organic matter.
6. Leaks and omissions caused by mining underground minerals in the ocean.