Intensified water-layout underground infiltration water treatment method and system
A sewage treatment method and technology of sewage treatment system, which are applied in biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the limitation of operation and management costs, great influence of environmental conditions, and damage to the ground landscape. and other problems, to achieve the effect of saving operation and management costs, simple management, and reducing soil blockage
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[0023] Example 1:
[0024] The infiltration soil layer in the infiltration ditch is Beijing fluvo-aquic soil mixed with 10% peat soil. Poa pratensis is planted on the surface. The buried depth of the water pipe is 30cm, the depth of the collection pipe is 80cm, the hydraulic load of the system is 2cm / d, and the area of the infiltration system 2m 2 , The sewage is fed in by continuous dosing. The influent water is domestic sewage. The concentrations of COD, ammonia nitrogen, total nitrogen and total phosphorus are respectively 93.2~264.0mg / L, 22.2~50.0mg / L, 43.41~49.28mg / L, 2~5mg / L. After the underground infiltration system is processed, the removal rate of COD, ammonia nitrogen and total phosphorus by the system is above 90%, and the total nitrogen removal rate is also 63.5%. The concentration of COD, ammonia nitrogen, total nitrogen and total phosphorus in the effluent is less than 50mg. / L, 0.02mg / L, 30mg / L and 0.025mg / L, meeting the "Water Quality Standards for Domestic Misce...
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[0025] Example 2:
[0026] The infiltration soil layer in the infiltration ditch is Yunnan red loam mixed with 25% slag and 8% peat. Ryegrass is planted on the surface. The buried depth of the water distribution pipe is 30cm, the buried depth of the collection pipe is 80cm, and the hydraulic load of the system is 2cm / d. Filter system area 9m 2 , Adopting the method of continuous mixing of sewage, the average concentration of influent COD, ammonia nitrogen, total nitrogen and total phosphorus are 76.0mg / L, 13.2mg / L, 21.2mg / L, 1.94mg / L domestic sewage, the system The removal rates of COD, ammonia nitrogen, total nitrogen and total phosphorus are respectively 83%, 70%, 77.7% and 98%. The average concentration of COD, ammonia nitrogen, total nitrogen and total phosphorus in the treated effluent is 11.7mg / L, 4.0mg / L, 4.7mg / L and 0.04mg / L, the treated effluent meets the "Water Quality Standard for Domestic Miscellaneous Water" (CJ25·1-89) issued by the Ministry of Construction.
Example Embodiment
[0027] Example 3:
[0028] The infiltration soil layer in the infiltration ditch is Yunnan red soil mixed with 25% slag and 8% peat. The buried depth of the water distribution pipe is 40cm, the depth of the collection pipe is 100cm, the hydraulic load of the system is 4cm / d, and the area of the infiltration system is 9m. 2 , Adopt a dry-wet cycle ratio of 1:1 to enter the water (that is, mix sewage for 1d, and then drain for 1d). The average concentrations of influent COD, ammonia nitrogen, total nitrogen and total phosphorus are 132mg / L and 14.2mg / L, respectively , 19.5mg / L and 3.4mg / L domestic sewage, the removal rate of COD, ammonia nitrogen, total nitrogen and total phosphorus by the system is 88.7%, 94.9%, 91.2% and 98.2%, respectively. COD, ammonia nitrogen, The average concentration of total nitrogen and total phosphorus is 14.9mg / L, 0.72mg / L, 1.7mg / L and 0.06mg / L, and the treated effluent meets the "Domestic Miscellaneous Water Quality Standards" (CJ25·1-89) issued by th...
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