Enhanced phosphorous undercurrent removing artificial wetland

Abstract

The invention relates to an enhanced phosphorous undercurrent removing artificial wetland for treating high-phosphorus sewage, which comprises a bed body, a mixed packing layer, a mixed soil layer, a water distribution tank, a water inlet perforation plate, a water outlet perforation plate and a water collecting basin. When the artificial wetland is in work, the sewage enters the water distribution tank and flows into the mixed packing layer through the water inlet perforation plate, then the sewage soaks towards the mixed soil layer slowly, and under the adsorption sedimentation actions of the packing layer and the soil layer and through microbial metabolism, the pollutants such as organic substances, nitrogen and phosphorus and the like in the sewage are removed. Simultaneously, aquatic plants can absorb part of the nitrogen and the phosphorus as nutrition substances supplied to per se metabolism so that advanced treatment is performed on the sewage. The artificial land has the characteristics of simplicity, practicability, high hydraulic load, good nitrogen and phosphorus treatment effect, stable performance, low running cost and the like.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to an intensified phosphorus removal underflow constructed wetland for treating high phosphorus sewage. Background technique [0002] At present, as a sewage treatment technology, constructed wetland has been successfully applied to domestic sewage, industrial and agricultural sewage treatment and other fields. Constructed wetland sewage treatment technology has the advantages of simple process equipment, convenient maintenance and management, low energy consumption, landscape effects, and strong system configuration plasticity. In recent years, more and more attention has been paid to and adopted by constructed wetlands for sewage treatment. types are also increasingly diverse. [0003] Constructed wetland sewage treatment system can be divided into surface flow wetland and subsurface flow wetland according to the water flow state. The cost of surface flow wetland is low, but the ...

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Problems solved by technology

The cost of surface flow wetland is low, but the hydraulic load is low, the sewage treatment effect is poor, the sanitary conditions are poor, and mosquitoes and flies are easy to breed; the subsurface flow wetland has good moisture retention, good removal effect on COD, ammonia nitrogen, etc., and is less affected by seasons, but There are also disadvantages such as easy clogging and low nitrogen and phosphorus removal load

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