Reportedly, recently, Zhanjiang, Guangdong Wuchuan city people reflect, for many years, a large number of untreated shrimp farming tail water discharged directly, seriously polluting the marine environment, the Gold Coast into a black sand beach. The reporter hiked the whole look at this beach, the scene was shocking - gray and black beach sewage flow, full of dead fish, the stench assaulted the nose. Rough statistics, more than 20 kilometers of beach sewage ditches, sewage outfalls, sewage pipes more than a hundred. Reporters have gone to Zhanjiang City Ecological Environment Bureau Wuchuan Branch, Wuchuan City Agricultural and Rural Affairs Bureau interviews, both sides said they were aware of the situation, but not under its supervision.
A large amount of untreated shrimp farming tail water has been discharged directly for many years, seriously polluting the marine environment, the Gold Coast has become a black sand beach. Shrimp ponds are densely packed along this 20-kilometer-long coastline. The sewage flowing in the ditches along the beach is of different colors. Some are dark like ink with greasy grime and a foul odor, others are green like algae foam. It was cloudy and yellow with a strong ammonia-nitrogen odor. The shoreline has nearly 100 sewers, outfalls and sewage pipes, according to a reporter's investigation.
Farmers said the authorities do not have strict requirements for the discharge of tail water. Farmers did not install sewage treatment equipment. Apart from lack of environmental awareness, the important thing is that they cannot afford the cost of reproduction.
Factors of Marine PollutionCoastal industrial companies discharge sewage directly into the sea. Rivers that flow into the sea, the company discharges sewage into the water bodies of these rivers. As pollutants are discharged into the atmosphere, acid rain is formed and then rainwater will enter the sea. Overfishing disrupts the ecological balance of the ocean. Transportation ships discard waste, spilling pollutants and leaking organics. Spills and leaks caused by mining underground minerals in the ocean. Solution 1.Physical TreatmentIn short, the method utilizes physical action for effective separation, which allows for the separation of insoluble materials in the wastewater without altering the chemical nature of the treatment process. The most common are gravity separation or reverse osmosis, or other separation methods. Physical treatment methods are relatively simple and economical. Basically, this method of wastewater treatment can be considered as the best treatment method and can be applied in all kinds of wastewater treatment. The amount of water is large or its own capacity is large.
2. Chemical treatmentIn actual treatment, many different chemical methods can be used for effective treatment. Through this treatment, the dissolved substances in the sewage can be recovered and can also be used in the treatment of industrial wastewater. There are many different methods that are most commonly used, including coagulation or redox methods as well as ion exchange methods. This treatment is more efficient and costly when it comes to chemical treatment. It can usually be used for biochemical treatment. It can also improve the quality of wastewater.
3. Biological TreatmentRelatively, this treatment utilizes the metabolism of microorganisms for treatment, which can break down dissolved or colloidal organic matter in wastewater, thus purifying it.