Improved purification tank and A+AO+AO rural sewage treatment process and device with same

Abstract

The invention discloses an improved purification tank and an A+AO+AO rural sewage treatment process and device with the same, relating to the field of rural sewage treatment. A three-phase separator of the improved purification tank can alleviate the air flotation effect and shorten the sedimentation time, bundled elastic filler devices in a filler sedimentation zone and a filler aeration zone have the strong water impact resistance, the film forming of filler is fast, the sewage treatment effect is good, and less sludge is generated. Sewage collected by a rural sewage pipe of each household is subjected to preliminary anaerobic decomposition in a conventional septic tank, and then enters into the improved purification tank for AO treatment, and effluent of the improved purification tank finally enters an XE-type purification tank of Daiki Environmental Protection Engineering (Dalian) Co., Ltd. to be further processed and discharged after reaching the standard, and has the total nitrogen and total phosphorus level A. The process is suitable for single-family and multi-family rural sewage treatment, has large processing capacity, high integration and convenient unified management.

Description

technical field [0001] The invention belongs to the field of water treatment, in particular to the field of rural sewage treatment, especially to an improved septic tank, and using the improved septic tank to realize the treatment process of A+AO+AO rural sewage, while providing this treatment Craft device. Background technique [0002] Rural sewage is a broad market, and a single septic tank and purification tank equipment cannot effectively treat rural sewage. The effluent indicators such as SS, COD, ammonia nitrogen, and phosphorus are still not guaranteed, and cannot meet the "Urban Sewage Treatment Plant Pollutant Discharge Standard" According to the first-level A standard in GB18918-2002, the rural sewage treatment process under the existing technology does not use bundled packing and three-phase separators. In addition, these rural sewage treatment technologies do not use solar energy, and usually use electric energy, which consumes a lot of energy. . [0003] The a...

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Problems solved by technology

[0002] Rural sewage is a broad market, and a single septic tank and purification tank equipment cannot effectively treat rural sewage. The effluent indicators such as SS, COD, ammonia nitrogen, and phosphorus are still not guaranteed, and cannot meet the "Urban Sewage Treatment Plant Pollutant Discharge Standard" According to the first-level A standard in GB18918-2002, the rural sewage treatment process under the existing technology does not use bundled packing and three-phase separators. In addition, these rural sewage treatment technologies do not use solar energy, and usually use electric energy, which consumes a lot of energy.

[0003] The applicant is committed to the research of rural sewage treatment equipment and technology, and has proposed a series-insertable bundle-shaped packing device for rural sewage treatment (application number 2018102212879) and an efficient improved septic tank (application number 2018102212737) and other patent applications, the shell cavity of the improved septic tank is divided into a water-connected three-phase separation area, a filler aeration area, and an inclined plate sedimentation area by two vertical bulkheads. The three-phase separation area is equipped with three-phase Separator, mud suction pipe and spherical packing, a number of bundled elastic packing devices are installed at intervals in the packing aeration area, one or more aeration devices are arranged between the bundled elastic packing devices, and there are Inclined plate / inclined pipe and suction pipe, a mixed liquid gas lift and reflux device connected to the three-phase separation area and inclined plate sedimentation area, this improved septic tank integrating three-phase separator, aeration device, and inclined plate device , the result is compact, and can efficiently treat rural sewage, but the disadvantage is that the cost is relatively high; the applicant proposed a method and device for the treatment of rural sewage by mobile strain cultivation in the rural sewage treatment process (application number 2018102212718), a treatment for rural sewage Orbal / MBR integrated reactor for waste water (application number 201810464315X), a rural sewage treatment device integrated with A2O membrane method (application number 2018104643164) and other patent applications

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