Sponge anti-clogging strengthening compound flow constructed wetland domestic sewage treatment device

Abstract

The invention relates to a sponge anti-clogging strengthening compound flow constructed wetland domestic sewage treatment device, which comprises a pretreatment region, a main reaction region and an exhalant region from left to right, wherein the pretreatment region comprises an intake pipe, a water distributor, a sponge, an air inlet pipe and a porous aerator; the main reaction region is formed by connecting three-stage vertical flow constructed wetland in series, i.e. a first unit, a second unit and a third unit which are separate; the bottom of the main reaction region is provided with a gravel water-distribution layer; a biological porcelain granule layer is distributed in the first unit; the top of the biological porcelain granule layer is covered with an aquatic plant root region; gravel and a steel slag layer are distributed in the second unit; the tops of the gravel and the steel slag layer are provided with an aquatic plant root region; a zeolite layer is distributed in the third unit; the top of the zeolite layer is provided with an aquatic plant root region; each unit is divided into a left grid and a right grid; the left grid is higher than the right grid; the pretreatment region and the main reaction region are connected by a perforated water-distribution plate which is arranged at one end of the gravel water-distribution layer; and the exhalant region comprises an exhalent pipe. The invention has the advantages of high pollutant removal rate, stable system operation, greatly improved hydraulic load, small floor area, low operation and maintenance costs, and the like.

Description

technical field [0001] The invention relates to a domestic sewage treatment device for a sponge anti-blocking reinforced composite flow artificial wetland. Background technique [0002] At present, the sewage treatment rate in cities and towns in my country is very low, and most domestic and production wastewater are directly discharged into rivers without treatment, resulting in serious water pollution. The advanced urban sewage treatment technology shows that although the pollutant removal rate is high, the basic investment and operating costs are high, which makes it difficult for many sewage treatment plants to raise funds to build or maintain operation due to high costs. Constructed wetland technology has the main characteristics of good treatment effect, strong ammonia nitrogen removal ability, convenient operation, maintenance and management, low engineering infrastructure and operation costs, and strong adaptability to load changes due to good water quality and low sl...

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Problems solved by technology

[0006] Although the above clogging prevention technologies have achieved certain results in practice, clogging in wetland systems is still a common phenomenon. Countermeasures

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