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Domestic sewage treatment technology

A treatment process and technology for domestic sewage, applied in biological water/sewage treatment, sludge treatment, water/sludge/sewage treatment, etc., can solve problems such as poor phosphorus removal effect, achieve fast speed, improve treatment capacity, Thickening effect with short duration

Inactive Publication Date: 2017-01-25
LIUZHOU RUNGUANG TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional A 2 The / O sewage treatment process guarantees the denitrification effect while the phosphorus removal effect is often not good

Method used

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  • Domestic sewage treatment technology

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0012] Such as figure 1 As shown, the present invention provides a domestic sewage treatment process, including an aerobic aeration tank, a secondary settling tank, a thickener, and a centrifuge arranged in sequence. The sewage directly discharges excess sludge from the aerobic aeration tank, and quickly adds compound Phosphorus removal and thickening agent, after being mixed evenly, it is sent to the thickening machine, and the thickening machine will concentrate the sludge from the aeration tank in a short time, and finally enter the centrifuge for dehydration, and the sludge will come out.

[0013] Such as figure 1 As shown, the aerobic aeration tank includes an anaerobic section, an anoxic section, and an aerobic section.

[0014] The cleaned water from the thickener and the centrifuge enters the anaerobic section.

[0015] The thickener...

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Abstract

The invention relates to the technical field of sewage treatment, in particular to a domestic sewage treatment technology. The invention provides a domestic sewage treatment technology which comprises the steps of sequentially arranging an aerobic aeration tank, a secondary sedimentation tank, a concentration machine and a centrifugal machine, directly discharging sewage from the aerobic aeration tank to leave sludge, quickly adding a compound dephosphorization concentration agent, conveying to the concentration machine after uniform mixing, allowing the concentration machine to condense the sludge out of the aeration tank in a very short time, finally allowing the sludge to enter the centrifugal machine for dehydration, and discharging the sludge. The produced residual sludge can be directly concentrated and separated directly from the aeration tank; the concentration is short in time and high in speed; the problem of anaerobic phosphorus release caused by the long time of sludge concentration is solved; a content of phosphorus and COD (chemical oxygen demand) in clear water treated by the novel method is significantly reduced; the quality of the clear water is close to that of effluent of the secondary sedimentation tank; the water can be directly discharged or return to a treatment system for dilution; the system treatment capacity is improved.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a domestic sewage treatment process. Background technique [0002] In order to slow down the eutrophication of water bodies in my country, it is one of the effective measures to formulate more stringent sewage discharge standards. The denitrification and phosphorus removal link for the purpose of controlling eutrophication has become a necessary step and main monitoring index for urban sewage treatment in my country. In my country, the research on biological nitrogen and phosphorus removal technology started relatively late, and the funds invested are very limited, and the research level is still in the primary stage of development. Therefore, the research and development of efficient and economical denitrification and dephosphorization process has become a research hotspot in the current urban sewage treatment technology. [0003] Traditional A 2 While the / O sewage tr...

Claims

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Application Information

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IPC IPC(8): C02F3/30C02F11/12C02F11/14
CPCC02F3/301C02F3/308C02F11/008C02F11/127C02F11/14C02F2101/105C02F2209/08C02F2301/046
Inventor 黄志铿
Owner LIUZHOU RUNGUANG TECH
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