Stirring type undercurrent wetland water body purification apparatus and water body purification method

Abstract

The invention discloses a self-purification device of disturbing typed artificial hidden flow marshland and purifying method, which is characterized by the following: displaying cube-boxing type; filling packing matrix into pool; planting vegetation on the upper surface of packing matrix; equipping cloth water pipe; incoming water pipe on the two sides of marshland purifying pool; making upper of water level balancing tank higher than marshland purifying pool; penetrating aerated pipe on the bottom of marshland purifying pool; aerating into marshland purifying pool with aeration machine; discharging assembling water from exhaust pipe. The invention possess short time limit for a project and low operation cost.

Description

technical field [0001] The invention relates to water body purification equipment for subsurface flow wetlands, in particular to a disturbance type artificial subsurface flow wetland water body purification treatment equipment and a purification method. Background technique [0002] Since the 1970s, water treatment technology of constructed wetlands has attracted people's attention. It has the advantages of low investment and low energy consumption, and has become a research hotspot in water environment technology. Subsurface flow wetland is a new technology of artificial wetland sewage treatment, which is an artificially constructed, controllable and engineered wetland system. [0003] Currently, existing subsurface wetlands include three key components: plants, microorganisms, and substrates. Fillers with different particle sizes are artificially constructed to form a bed for the matrix. Water-resistant plants with high decontamination efficiency are planted on the surfac...

AI Technical Summary

Problems solved by technology

However, there are still many defects and deficiencies. Plants and microorganisms in subsurface wetlands are greatly affected by climate, especially in the improvement of water environment in northern cities. Due to the impact of winter freezing period, the wetland system cannot operate due to the freezing of aquifer layers; subsurface wetlands The microorganisms in the wetlands are naturally formed during the operation process, and high-efficiency microorganisms cannot be added artificially. The role of microbial degradation in subsurface wetlands cannot be fully exerted, especially in the early stage of wetland construction. The recovery process of microorganisms is slow.

Under the low dissolved oxygen content inside the subsurface wetland, the aerobic microbial action in the surface aerobic zone is weakened, the water quality of the effluent is poor, and the dissolved oxygen concentration of the effluent is low, which is not conducive to the self-purification of the receiving water body

Most of the matrix fillers are made of gravel packing beds. The variety and composition of the matrix fillers are relatively simple. The single composition of the matrix fillers forms a relatively uniform permeation system. The operation process of the water body is a simple horizontal movement, and the exchange between the upper and lower water bodies is poor. The water flow exchange between the upper aerobic and lower anaerobic zones is weak, resulting in a decrease in the purification treatment effect

In order to increase the exchange of upper and lower water bodies and prolong the water flow path in some horizontal flow wetlands, weirs are artificially set up at the bottom of the wetland treatment pool. Although the exchange intensity of the upper and lower water bodies is increased and the water flow path is extended, it is easy to form dead water areas and cause overall purification. Processing efficiency drops

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