Reinforced phosphorus removal composite constructed wetland treatment system

Abstract

The invention discloses a reinforced phosphorus removal composite constructed wetland treatment system. The system comprises an ecological pond, a phosphorus removal pond, a subsurface coupling wetland and a water collecting channel which are sequentially arranged in the water inlet direction, wherein one side of the ecological pond is connected with a water inlet pipe, the other side of the ecological pond is communicated with the phosphorus removal pond through a first communicating pipe, the water outlet end of the phosphorus removal tank is communicated with the water inlet end of the subsurface coupling wetland, a dosing system for adding metal salt is arranged above the phosphorus removal tank, and the water outlet end of the subsurface coupling wetland is communicated with the water collecting channel through a second communicating pipe. The invention provides a reinforced phosphorus removal composite constructed wetland treatment system, which adopts a process combination of an ecological pond and a subsurface coupling wetland, wherein an agent is added for treatment before entering the wetland, and residual agent enters the subsequent subsurface coupling wetland along with sewage, is adsorbed by a filter material in the wetland and continues to act in the wetland, so that the utilization rate of the agent is greatly improved, the addition amount of the phosphorus removal agent is reduced, and the sewage treatment cost is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to an enhanced phosphorus removal composite artificial wetland treatment system. Background technique [0002] Water pollution problems such as marine red tide, water eutrophication, and black and odorous water will seriously reduce the quality of the regional ecological environment. The main reason for the above problems is the enrichment of phosphorus content. Therefore, the removal of phosphorus in sewage is one of the most important links in the sewage treatment process, and it is an important indicator of whether the sewage treatment can meet the standard. The traditional sewage dephosphorization process mainly adopts biological dephosphorization or chemical dephosphorization. The former has low treatment efficiency and low removal rate, while the latter has good treatment effect. However, in order to achieve the desired effect, the general dosage of chemicals is 3 to 5...

AI Technical Summary

Problems solved by technology

The traditional sewage dephosphorization process mainly adopts biological dephosphorization or chemical dephosphorization. The former has low treatment efficiency and low removal rate, while the latter has good treatment effect. However, in order to achieve the desired effect, the general dosage of chemicals is 3 to 5 times the theoretical value. Times, resulting in a large amount of chemical waste, resulting in greatly increased processing costs, and easy to cause secondary pollution

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