Water area sewage treatment device and method

Abstract

The invention relates to a water area sewage treatment device which comprises a sewage lifting device, a sewage purification device, an artificial wetland and a water distribution device, wherein the sewage lifting device is used for extracting sewage in the water area and delivering the sewage to the sewage purification device; the sewage purification device is used for purifying the sewage and delivering the purified sewage to the water distribution device; the water distribution device is used for distributing the purified sewage into the artificial wetland; and the artificial wetland is used for further purifying the sewage and discharging the sewage purified by the artificial wetland into the water area. The water area sewage treatment device provided by the invention effectively removes organic pollutants, ammonia nitrogen and total nitrogen in the water body, and implements in-situ reduction of surplus sludge. The artificial wetland advanced treatment technique is arranged to further purify the effluent water; and the downstream water body is refluxed and treated to enter the upper river of the river course to form the water body circulation flow, thereby enhancing the water body reoxygenation and enhancing the water body self-purification capacity.

Description

technical field [0001] The invention relates to the field of environmental pollution control, in particular to a water area sewage treatment device and method. Background technique [0002] In the past 30 years, the population along rivers and lakes has increased dramatically, and untreated domestic sewage has been directly discharged into rivers and lakes. With the rapid development of economy and society, the industry is also developing rapidly. A large amount of untreated industrial sewage or treated but substandard industrial sewage is also directly discharged into rivers and lakes. As the scale of the city continues to expand, the urban population is increasing day by day. Inland rivers and lakes in some cities have become sewage discharge pipes, resulting in deterioration of water quality and serious impact on urban environment and landscape. The tail water quality of urban sewage treatment plants is at most up to the Class A standard of my country's "Pollutant Discha...

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Problems solved by technology

In addition, due to the proximity to the living areas of urban residents, the entry of domestic waste and other pollution sources, and the intervention of measures such as the hardening of urban inland rivers and lake revetments, the water quality of urban inland rivers has seriously deteriorated, and the self-purification capacity of water quality has gradually decreased.

[0003] At present, most of the treatment of water pollution adopts chemical treatment methods or pollution control methods of dredging sludge. In order to maintain and purify the water quality of polluted water bodies, it often requires a large amount of treatment and a short cycle. The construction scale and investment Larger, and difficult to reach the level of V surface water

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