Sewage treatment process for dispelling sludge in situ through biological regulation and control

A technology for sewage treatment and biological sewage treatment, applied in biological water/sewage treatment, water/sludge/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problem of poor dephosphorization effect and achieve good sewage treatment Effectiveness, elimination of sludge discharge, and small footprint of equipment

Active Publication Date: 2015-03-04
东莞市名航环保技术有限公司
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Problems solved by technology

[0009] The purpose of the present invention is to provide a sewage treatment process for in-situ sludge digestion by biological regulation. The present invention solves the above-mentioned deficiencies in the existing active sewage treat

Method used

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  • Sewage treatment process for dispelling sludge in situ through biological regulation and control
  • Sewage treatment process for dispelling sludge in situ through biological regulation and control
  • Sewage treatment process for dispelling sludge in situ through biological regulation and control

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Embodiment

[0028] Example: such as Figure 7 As shown, the sewage treatment process of biologically regulated in-situ digestion of sludge is as follows:

[0029] Step 1. The remaining sludge in the sedimentation tank in the sewage biological treatment process is treated with ozone micro-nano bubbles to obtain a mixed solution of broken cell decomposition, which is homogeneously mixed with raw sewage and used as sewage influent, which enters anaerobic anoxic and then enters aerobic biochemical pool. In the operation steps, the sludge concentration of the mixed liquor is controlled to be 20000-30000mg / L. The dehydration treatment time of micro-nano ozone bubble wall broken cells is 0.5-2 hours, and the dissolved oxygen concentration of the mixed solution is controlled at 3-4mg / L;

[0030] Step 2: Part of the mixed solution of the broken cell decomposition mixed solution obtained after treatment with ozone micro-nano bubbles is selected and cultivated by the light of life to obtain a mixe...

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Abstract

The invention relates to a sewage treatment process for dispelling sludge in situ through biological regulation and control. The sewage treatment process comprises the following steps of: 1, carrying out ozone micro-nano bubble treatment on excess sludge of a sedimentation pool in a biological sewage treatment process to obtain a wall-broken cell dissolution mixed solution, and homogeneously mixing with raw sewage as sewage feedwater which enters an anaerobic and anoxic pool and then enters an aerobic biochemical pool; 2, homogeneously introducing a mixed solution obtained by selectively culturing to obtain an active karyoplasm photochemical microbe through a life light from a part of the wall-broken cell dissolution mixed solution obtained through the ozone micro-nano bubble treatment and the raw sewage into the anaerobic and anoxic pool in a mixed way for a series of biochemical reactions; 3, separating the mixed solution obtained through reaction inside the aerobic biochemical pool to obtain supernate and a concentrated mixed solution; 4, discharging the supernate obtained through separation from the step 3, concentrating the mixed solution, and returning to execute the step 1 and the step 2; 5, carrying out purification and disinfection treatment on the supernate obtained through separation from the step 3, discharging as effluent water, and carrying out drying treatment on the excess sludge and inorganic silt which are positioned at the bottom of a concentrated mixed solution pool and in the anaerobic and anoxic pool.

Description

technical field [0001] The invention belongs to the technical field of sludge biological treatment process, and in particular relates to a sewage treatment process for biologically regulated in-situ digestion of sludge, in particular to a method for micronano ozone bubble cell wall breaking and photochemical biological digestion of sludge. Background technique [0002] With the increasingly serious water pollution, it is imperative to economically and effectively treat all kinds of sewage. At present, tens of thousands of sewage treatment plants are in operation around the world, and with the improvement of environmental awareness and environmental protection requirements, more sewage plants will be built soon. Sewage biological treatment has been widely used in sewage treatment due to its outstanding advantages of high efficiency and low consumption. The sewage biological treatment process represented by activated sludge and biofilm has achieved great success in water pollu...

Claims

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Application Information

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IPC IPC(8): C02F3/30C02F11/06
CPCC02F3/30C02F3/34C02F9/00C02F11/06
Inventor 张培君侯小兵张思思
Owner 东莞市名航环保技术有限公司
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