Sewage treatment system with pulse water distribution and modular artificial wetland

Abstract

The invention relates to a sewage treatment system with a pulse water distribution and modular artificial wetland. The sewage treatment system comprises a pretreatment unit, a water inlet unit and anartificial wetland unit, wherein the pretreatment unit, the water inlet unit and the artificial wetland unit are sequentially arranged, the water inlet unit is a pulse type water distribution device,and can automatically adjust the water inlet flow rate of an artificial wetland and controls the water inlet cycle, and the artificial wetland unit comprises one or a plurality of artificial wetland modules and a water collecting pool. According to the present invention, by using an intermittent operation mode, water distribution is periodically performed on the artificial wetland unit through a pulse type water distribution box, air enters a matrix layer at a water discharge stage along with the water level reducing in the wetland to form an aerobic matrix environment, and the pollutants in sewage are subjected to microorganism, matrix and plant comprehensive degradation in the wetland, such that the sewage C and N removal efficiency is increased while the long-term efficient removal of phosphorus is achieved; and the system has characteristics of modularized design and installation, low energy consumption, low cost, small occupation area and basically no daily management, and can solve the problem of difficulty in low cost standard treatment of rural sewage due to discharge dispersion, small amount of water and poor water quality.

Description

Technical field [0001] The present invention belongs to the field of water pollution treatment, and specifically relates to artificial wetland purification technology. Background technique [0002] With the continuous improvement of rural living standards, the discharge of rural domestic sewage has gradually increased. For a long time, people have paid insufficient attention to decentralized rural life pollution. Due to the low level of economic development, backward infrastructure construction, insufficient environmental protection awareness of the local people, and imperfect domestic sewage collection and treatment systems, there is a lack of effective rural households in rural areas. Wastewater treatment technology and management methods have led to the random discharge of a large amount of untreated wastewater. The situation of water pollution in rural areas is becoming more and more serious, which seriously affects the rural ecological environment, and the safety of drinking...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of high investment and operation cost, large floor area, low efficiency and harsh treatment environment of the existing rural toilet sewage treatment technology, the present invention provides a modular integrated self-cleaning pulse aerobic artificial wetland, which utilizes a water inlet module The medium pulse water distribution tank adjusts the intermittent operation mode of the constructed wetland to realize automatic hydraulic control in the case of large water fluctuations; the intermittent vertical downward flow treatment process of the modular constructed wetland is used to form an aerobic environment to prevent pollution in sewage The comprehensive degradation of microorganisms, substrates and plants in the constructed wetland, and through the modular design of the constructed wetland, the equipment can be mass-produced and quickly assembled on site

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