Backwash, aeration type undercurrent wetland water body purification apparatus and water body purification method

Abstract

The invention discloses a purifying device of backwash, aeration type hidden flow marshland water body and a method of purifying water body, wherein the whole purified pool display cube box; the separating pool separate the pool as downward pool and upper pool; the filling base material pack evenly in the pool; planting amphibious plant on the upper; setting cloth water pipe on the upper of the upper pool; making the upper of adjusting pool higher than purifying pool; setting inlet pipe and water-feed pump on the one side of the adjusting pool; setting admitting pipe and admitting pipe on the upper of the upper pool; setting aeration machine on one side of the purifying pool. The invention possesses high load factor, small plot area and good treatment effect, which can improve treatment effect.

Description

technical field [0001] The invention relates to an underflow wetland water body purification equipment, in particular to a backwashing and aeration type underflow wetland water body purification equipment and a water body 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] The advantage of the subsurface wetland is that it makes full use of the space of the wetland and plays a coordinating role among the systems. Under the condition of the same area, the treatment capacity of the subsurface wetland is greatly improved. Currently, subsurface wetlands include three key com...

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 wetland rely on the natural formation during the operation process, and high-efficiency microbial bacteria cannot be added artificially, and the role of microbial degradation in subsurface wetlands cannot be fully exerted, especially the treatment effect in the early stage of wetland construction is poor, and the recovery process of microorganisms in spring 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

The subsurface wetland is not equipped with a backwashing system, and the sewage contains a large amount of organic pollutants and suspended solids, which accumulate in the bottom layer for a long time, which may easily cause the subsurface wetland to be blocked and short-circuit the water flow, reduce the efficiency of the subsurface wetland, and even cause the subsurface wetland to fail to operate normally

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