Multifunctional small-reservoir wetland system directed at non-point source pollution abatement

Abstract

The invention relates to a multifunctional small-reservoir wetland system, which is applied to the field of non-point source pollution abatement. The multifunctional small-reservoir wetland system comprises electrically-adjusting check gates, a reflux pump, a diversion ridge, surface flow wetland, a microbe-adhered base, an ecological pond and a catchment channel, wherein the catchment channel isarranged in an area where non-point source pollution abatement is required; a group or multiple groups of electrically-adjusting check gates are arranged at the sewage inlet of the catchment channel;one side, near the electrically-adjusting check gates, of the catchment channel is provided with the diversion ridge; one side of the diversion ridge is successively provided with the surface flow wetland and the microbe-adhered base; and the other side of the diversion ridge is provided with the ecological pond. Sewage enters the electrically-adjusting check gates and passes through the s surfaceflow wetland and the microbe-adhered base, and then the reflux pump arranged on the diversion ridge is employed for cyclic treatment of initial high-concentration rainwater in the wetland system. Themultifunctional small-reservoir wetland system provided by the invention can realize cyclic purification of initial high-concentration rainwater in the wetland system and fully guarantee that effluent stably reaches the standard, realizes the regulation, circulation and purification of non-point source pollution, and allows the finally effluent to be discharged into a downstream water body or tobe reused after reaching the standard.

Description

technical field [0001] The invention relates to the technology in the field of rainwater treatment, in particular to a multifunctional pond and weir wetland system for non-point source pollution control. Background technique [0002] With the implementation of my country's water environment treatment projects, point source pollution has been initially effectively controlled and treated, but the non-point source pollution formed by rainfall in cities, villages and farmland has become a difficult point of treatment, and non-point source pollution has a great impact on water bodies. The contribution of pollution is also gradually increasing. Because non-point source pollution has the characteristics of dispersion, randomness, and diversity, it is difficult to control it. [0003] The use of constructed wetlands to treat stormwater runoff is a new rainwater treatment technology developed in recent years. Constructed wetlands used to prevent and control non-point source pollutio...

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Problems solved by technology

[0005] (1) The water volume of rainwater runoff fluctuates greatly. In the existing technology, the water volume regulation of the constructed wetland is separately provided with interception and storage facilities, resulting in a large area;

[0006] (2) The concentration of pollutants in the rainwater runoff entering the wetland system fluctuates greatly, and it is difficult for the traditional wetland effluent to achieve stable compliance

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