Rural domestic sewage combined type ecological treatment system and treatment method, and application thereof
A technology for domestic sewage and ecological treatment, applied in biological water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. Strong applicability and sustainability, ensuring the effect of water quality compliance
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Embodiment 1
[0046] Such as figure 1 As shown, a combined ecological treatment system for rural domestic sewage includes a sewage collection pipe network 1 connected in sequence, a regulating tank 2 (which can be used as a septic tank for anaerobic reaction, and can also adjust the water volume for uniform water distribution), advanced Biological contact oxidation tank 3 (first-level treatment device), high-efficiency biological filter 4 (second-level treatment device) and constructed wetland 5 (third-level treatment device);
[0047] Wherein, the advanced biological contact oxidation tank includes a first reaction zone 3-1 and a second reaction zone 3-2, and the first reaction zone 3-1 and the second reaction zone 3-2 are connected in the form of falling water; the first The reaction zone 3-1 is connected to the sewage collection pipe network 1; the second reaction zone 3-2 is connected to the high-efficiency biological filter 4; the sewage at the bottom of the first reaction zone 3-1 is ...
Embodiment 2
[0070] Example 2 Rural Domestic Sewage Pollutants Removal Effect
[0071] According to Example 1, a combined ecological treatment system for rural domestic sewage is constructed. The system is located in Fenshui Village, Zhoutie Town, Yixing City, Jiangsu Province. After the system has been in operation for one year, the influent water samples and the effluent water samples are respectively collected at the end of each month, and 10 consecutive samples are taken. moon. Among them, the average indicators of influent water samples are COD170mg / L, TN21.7mg / L, TP2.2mg / L, NH 3 -N9.6mg / L, SS68mg / L, the average effluent indicators are COD28.5mg / L, TN4.8mg / L, TP0.16mg / L, NH 3 -N1.8mg / L, SS3.6mg / L, the removal rate of the system for rainfall non-point source pollutants respectively reached COD82%, TN65%, TP93%, NH 3 -N80%, SS94%, this system can effectively reduce rural domestic pollution from entering surrounding river water bodies.
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