With the rapid development of China's social economy, a large amount of sewage enters river channels/lakes, resulting in serious organic pollution exceeding the standard and forming a large number of black and smelly water bodies, which affects the ecological environment and human life and health. Social and environmental problems are becoming increasingly serious. The reasons for the formation of black and smelly water are complex and diverse. One is exogenous pollution, including sewage discharge, overflow of combined pipe network, initial urban rainwater, non-point agricultural sources and coastal garbage. The second is endogenous pollution, including the release of sediment from river bottom and the decay of aquatic plants. Third, self-purification capacity of water, including poor water mobility, hypoxia, ecosystem damage; Fourth, the lack of mechanisms, including departmental function conflict, management is not in place. According to the planning goal of "Water Ten", by 2020, the black and smelly water in cities at and above the prefectural level must be controlled within 10%. Therefore, the treatment of black and smelly water has become the top priority of water environment treatment. Shanghai Jinduoyu Chenshui Environmental Engineering Co., LTD., based on the cooperative super purification technology developed by special carbon materials, purified part of Shanghai Fengxiantou Bridge river channel and monitored the indicators of dissolved oxygen, COD, ammonia nitrogen, total phosphorus and total nitrogen in the water in real time during the process. The results showed that, regardless of whether the equipment was placed in the river or in a separate bucket along the shore, the chemical indicators of water bodies within 2.5 kilometers of the equipment were completely changed. Three days after the equipment is turned on and running, the river water quality has changed from black and smelly water to four types of water in the Surface Water Environmental Quality Standard (GB3838-2002). If the total nitrogen index is not taken into account, the river water after treatment has reached or exceeded three types of water. During the operation of the equipment, the water body that is again polluted can be completely recovered within 1 day after 4 times of rainfall and typhoon. The rapid improvement of river water quality and the wide range of equipment influence are beyond imagination.

Comparison of black and smelly river before and after treatment    

      Engineering practice has proved that collaborative super-purification technology has the following obvious advantages: 1. Simple construction, no need for a large number of civil engineering, no secondary pollution; 2. 2. Small floor space and low energy consumption; 3. The water treatment basin is wide, and the effect area of a single equipment varies from tens of meters to hundreds of meters to several kilometers; According to the pollution degree of water quality, the size of the water basin and other factors, the water body with low pollution can be purified in a few days. The time required for the water body with heavy pollution ranges from ten days to one month. 5. The treatment effect is complete. At present, COD in water can be oxidized to carbon dioxide and water, while ammonia nitrogen, total phosphorus, cyanobacteria and heavy metal ions can be degraded or oxidized. 6. The application range is wide, and some areas with continuous discharge of point source and non-point source pollution have little impact on the working conditions of the technology, so it is particularly suitable for water quality purification in large river basins. The basic principle of water quality purification is as follows: the core of the equipment is a kind of diamond material, which has unique properties and can release a large number of negative electron affinity electrons, which disperse the complex (organic compound cluster) in water and form a large number of carbon points. The carbon points formed by the equipment, under the irradiation of sunlight, produce efficient photocatalytic oxidation reaction, absorb photons, release high-energy electrons, and change water molecules into reactive oxygen and hydrogen. The hydrogen leaves the water surface, and reactive oxygen remains in the water. High-energy electrons can also break the carbon-carbon bonds in organic matter, and oxidize organic pollutants into carbon dioxide and water under the action of reactive oxygen species. At the same time of organic matter degradation, a large number of new carbon points will form in the water body. The new carbon points also have the function of photocatalytic oxidation. Through the fluctuation of the water body, they can spread to more areas, further degrade nearby pollutants, and form more carbon points, and finally achieve the treatment of the whole basin. At the same time of water treatment, organic matter in the silt will be gradually released and thoroughly degraded, and the activation of the whole water body will be finally realized through synergistic action. Superclean significance lies in the efficient use of the huge energy of sunlight irradiation (standard 1 kilowatt per square meter), if in a radius of 2500 meters, the standard total sunlight irradiation intensity is 20 million kw, the equivalent of an installed capacity of the three gorges hydropower station, so high power energy on the effective purification of water, so water quality purification works very fast, and system operation consumes only a few volts and dozens of watts..