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Biochemical pretreatment device of sewage

A pretreatment device, biochemical technology, applied in water/sewage multi-stage treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc., to achieve strong impact load resistance, improved oxygen utilization rate, and filling rate selection Effect

Inactive Publication Date: 2015-01-14
中国人民解放军环境科学研究中心 +2
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a new biochemical pretreatment process and device for domestic sewage to solve the problem of small-scale domestic sewage treatment and discharge in areas far away from urban pipe networks.

Method used

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  • Biochemical pretreatment device of sewage

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Effect test

example 1

[0013] exist figure 1 In the process, the domestic sewage flows into the primary oxidation zone 13 through the water inlet pipe 1, and in the primary oxidation zone 13, it is aerated through the aeration pipe a7-1, passed through the combined biological filler fluid layer a2-1 and the biological filler fixed layer 4 for biological oxidation and physical retention , collected in the water outlet layer 6 and transported to the secondary oxidation zone 14 by the water lifter 8, in the secondary oxidation zone 14 through the aeration tube b7-2 aeration and the biological filler fluid layer b2-2 biofilm frequent contact with biological oxidation , flows through the weir flow screen 9 weir to the sedimentation zone 10, and is discharged from the supernatant water discharge pipe 12 by advection. The treatment liquid is transported by the water lifter 8 between the primary oxidation zone 13 and the secondary oxidation zone 14, there will be a liquid level difference, the return pipe 1...

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Abstract

The invention relates to a process and a device for biochemical pretreatment of domestic sewage, and aims at solving the key technology for the pretreatment stage of miniaturized domestic sewage in-situ treatment, so as to achieve environmental protection standard emissions of sewage treatment. Compared with the prior art, the biochemical pretreatment device has the advantages that: a biological packing flowing layer is well combined with a biological packing fixed layer according to the advantages, a good treatment effect can be obtained within a relatively large burden range, the resistance to impact load is strong, the filling rate is easy to select, the filing ratio can be selected according to the requirements, and the requirements of water change are met.

Description

technical field [0001] The invention relates to a sewage biochemical pretreatment device, which is applied to a miniaturized domestic sewage treatment system and used to solve the problem of environmental pollution caused by the lack of sewage pipe networks in remote areas. Background technique [0002] At present, domestic large and medium-sized sewage treatment plants use more domestic sewage treatment processes, the technology is mature and reliable, and the treatment effect is good. However, for the sewage treatment of living quarters, hotels, restaurants, resorts, recuperation bases, scenic spots, and military frontier posts that cannot be covered by the urban drainage network, most of them use buried domestic sewage treatment equipment. However, from the perspective of actual application, this technology still has some shortcomings, such as high investment and operation costs, short service life of equipment, unfavorable maintenance, unstable water quality, etc. The d...

Claims

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Application Information

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IPC IPC(8): C02F9/14
CPCC02F3/02C02F3/101C02F9/00C02F2301/08
Inventor 王永杰李军罗滨孟庆宝周东岳刘学虎何熙平冯智佳李波卢权华罗磊王巍邵俊峰张运龙李瑞雪
Owner 中国人民解放军环境科学研究中心
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