Method for treating water quality of black-odor river channel
A river channel and water quality technology, applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of long time required, discounted coagulation effect, and poor deodorization effect and other problems, to achieve the effect of inhibiting the sediment from floating up, improving the transparency, and reducing the preparation time
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Embodiment 1
[0026] A certain river in Guangzhou is located in the central area of Guangzhou. The width of the river is about 30 meters, the length of the river is 2,400 meters, and the treatment length is about 2,000 meters. Residents' domestic sewage is discharged along the coast. The flow velocity of the river is 0.04-0.26m / s, the water depth is between 0.6-2 meters, the water flow is slow, and there is almost no self-purification ability. Before the emergency treatment, the water body was black and smelly, and black sediment emerged from the bottom of the river from time to time.
[0027] During implementation, the dissolved oxygen amount X of the river water is determined to be 0.8 mg / L by the laboratory, and then the amount Y of the substrate cleaning agent to be added is determined to be 84 mg / L according to the relational formula of Y=-20X+100. First install the dosing device in the river, and then use the jet pump to spray the substrate purification agent along the 2,000-meter t...
Embodiment 2
[0032] Zhangcunyong, Baiyun District, Guangzhou, has a river width of 6-10 meters, a river channel length of about 1,500 meters, and a treatment length of about 500 meters. A large amount of sewage is discharged into the upstream of the river. The flow velocity of the river is between 0.02-0.1m / s, and the water depth is between 0.6-1m. The water flow is slow. Before the emergency treatment, the water body is black and smelly, and black sediment emerges from the bottom of the river from time to time. River gushing into Shijing River caused great pollution to Shijing.
[0033] During implementation, the dissolved oxygen amount X of the river water is determined to be 0 by the laboratory, and then the amount Y of the substrate cleaning agent to be added is determined to be 100 mg / L according to the relational formula of Y=-20X+100. First install the dosing device in the river, and then use the jet pump to spray the substrate purification agent along the 500-meter treatment sectio...
Embodiment 3
[0038] A certain river in a certain city has a width of 15-30 meters, a river channel length of about 1,500 meters, a treatment length of about 1,100 meters, a water depth of 1.2-2.5 meters, and slow water flow. Black bottom mud. It is required that the water body in the water quality assurance section should not be black or smelly, and the transparency should be >0.7m. The flow velocity of the river during the guarantee period is between 0.02 and 0.23m / s.
[0039]During implementation, the dissolved oxygen amount X of the river water is determined to be 0 by the laboratory, and then the amount Y of the substrate cleaning agent to be added is determined to be 100 mg / L according to the relational formula of Y=-20X+100. First install the dosing device in the river, and then use the jet pump to spray the substrate purification agent along the 1100-meter treatment section of the river. The substrate cleaning agent is a mixture of calcium peroxide and oxalic acid. The weight rat...
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