Baffle plate constructed wetland system capable of reinforcing nitrogen and phosphorous removal

Abstract

The invention relates to a baffle plate constructed wetland system capable of reinforcing nitrogen and phosphorous removal, and belongs to the technical field of water treatment. The system is characterized in that a pool body is divided into two filler areas through a middle water fender; sewage enters from a water distribution trench on the front end of the first filler area and then carries outbaffling through a vertical clapboard to enter the second filler area; processed water flows out of the tail end of the second filler area. The compound filler added into the system is porous and hasa large specific surface area, a favorable space is provided for the apposition growth of microorganisms, pollutant removal can be reinforced through a powerful filtering, adsorption and flocculent precipitation function as well as iron and manganese elements, and system blockage can be effectively delayed. Meanwhile, the system can flexibly regulate the areas of two filler areas through the adding of the vertical clapboard according to water quantity and water amounts, water flow can be of a wave shape, and hydraulic residence time is prolonged. The system has the characteristics of good denitrification and phosphorous removal effect and low operation cost.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a folded-plate flow artificial wetland system for granular iron-manganese catalytic metal composite fillers to strengthen the removal of nitrogen and phosphorus. Background technique [0002] Constructed wetland is a new sewage treatment technology developed in the 1970s. It is a comprehensive ecosystem composed of fillers, aquatic plants and microorganisms. Because of its characteristics of low investment, low energy consumption, simple operation, and no secondary pollution, It is gradually being widely used in the treatment of domestic sewage, secondary sewage treatment plant effluent and industrial wastewater. Its mechanism of action mainly uses the synergy between fillers, microorganisms and aquatic plants in wetlands to remove pollutants. Filler is the core part of constructed wetland. It can not only directly remove pollutants through adsorption, filtrat...

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Problems solved by technology

[0004] Based on the technical problems existing in the operation of constructed wetlands, the purpose of this invention is to use a granular iron-manganese catalytic metal composite carrier and zeolite material that is non-polluting, fast in response, wide in scope of application, and low in operating cost as fillers. The organic combination of slab flow constructed wetland can solve the problem of wetland blockage on the one hand, and the porous material is more conducive to the attachment of anaerobic / aerobic microorganisms, strengthening the removal of nitrogen and phosphorus in sewage; on the other hand, adding vertical partitions according to the quality and quantity of sewage can Flexibly change the structure and volume of the pool, increase the hydraulic retention time, and enhance the treatment effect

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