Sludge source reduction treatment method and device

A treatment device and sludge technology, which is applied in the direction of sludge treatment, sludge treatment, biological sludge treatment, etc., can solve the problems that sludge cannot be used as a useful resource, the normal service life of landfills is affected, and the incineration efficiency is low. Achieve the effects of improving the sewage treatment capacity of the system, enhancing the stabilization of biological activity, and enhancing the efficiency of reduction

CN104098245AInactive Publication Date: 2014-10-15昆山瀚潮环保科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2014-10-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a sludge source reduction treatment method and a device. The method includes: subjecting a sludge and sewage mixed solution to complete aeration and mixing in an aerobic biochemical pool, introducing the effluent solution into a precipitation pool to undergo precipitation, bringing out the supernatant, and periodically extracting quantitative precipitated sludge from the precipitation pool, making the quantitative precipitated sludge enter a pre-anoxic reaction pool and then enter an anaerobic reactor through the pre-anoxic reaction pool to undergo reaction, then extracting equivalent sludge and leading it into a pre-aeration reaction pool to undergo aeration mixing for 2-8h, then extracting an equivalent sludge mixed solution from the pre-aeration reaction pool to supplement the aerobic biochemical pool, thus finishing cyclic exchange flow of the sludge among precipitation-pre-anoxic-anaerobic-pre-aeration-aerobic-precipitation equipment. The method and the device provided by the invention have the advantages that: the sludge reduction effect is good and stable, the nitrogen removal ability of the technological system is enhanced, and the newly added pre-aeration reaction pool strengthens the nitrification function of the system, so that more nitrogen pollutants are converted to nitrate nitrogen and then can be removed in the anaerobic reactor, construction and transformation are easy, and the building cost is low, thus having long-term economic benefits.
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Description

technical field

[0001] The invention relates to a sewage treatment process, in particular to a residual sludge reduction treatment process. Background technique

[0002] In recent years, my country's sewage treatment industry has achieved rapid development. The biological treatment process based on activated sludge method has been widely used in various scales of urban sewage treatment process because of its high organic pollutant removal effect. middle. At the same time, since urban sewage treatment plants almost all use various forms of activated sludge as the treatment process, a large amount of excess sludge will inevitably be produced. At present, the total amount of excess sludge produced by urban sewage plants in my country is huge and growing rapidly. There is no proper treatment method and the cost of treatment and disposal is high. In addition, sludge contains toxic and harmful substances such as heavy metals, various organic matter and bacteria, which will cause ...

Examples

Embodiment

[0029] refer to figure 1 , a sludge source reduction treatment method and device, consisting of an aerobic biochemical tank 2, a sedimentation tank 4, an anaerobic reactor 7 and a pre-aeration reaction tank 9, wherein the outlet of the aerobic biochemical tank 2 is connected to the sedimentation tank 4 The inlet of the sedimentation tank 4 is connected to the inlet of the anaerobic reactor 7, the outlet of the anaerobic reactor 2 is connected to the inlet of the pre-aeration reaction tank 9, and the outlet of the pre-aeration reaction tank 9 is connected to the inlet of the aerobic biochemical tank 2 .

[0030] The anaerobic reactor 9 is an anaerobic digestion device with a stirring device, and contains a pre-anoxic part. The pre-aeration reaction tank is an aerobic aeration reaction tank.

[0031] A method for reducing excess sludge. Sewage 1 enters an aerobic biochemical tank 2 for sufficient aeration and mixing. The sludge mixture 3 flowing out of the aerobic biochemical ...