Sludge cyclone separation and activation treatment method and device

A technology for activation treatment and sorting, applied in biological treatment devices, water/sludge/sewage treatment, chemical instruments and methods, etc. The comprehensive efficiency is fully connected, and the problems such as reducing the emission reduction and reducing the burden of the biochemical unit are suppressed, so as to achieve the effects of simple structure, low equipment cost, and simple installation and operation.

Active Publication Date: 2020-06-05
EAST CHINA UNIV OF SCI & TECH
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Problems solved by technology

[0005]However, under the above-mentioned existing research or demand conditions, the demand for sludge separation has not been fully connected with the comprehensive performance of the biochemical unit, nor has a standardized process been formed. Continue to improve the sludge settling and sludge activated sludge in the biochemical tank, thus significantly suppressing the demand for emission reduction and discharge compliance of the biochemical unit

Method used

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  • Sludge cyclone separation and activation treatment method and device
  • Sludge cyclone separation and activation treatment method and device

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Experimental program
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Effect test

Embodiment 1

[0055] A domestic sewage treatment plant 1m 3 / h A / O (anoxic / aerobic) process line test.

[0056] 1. Process flow

[0057] Such as figure 1 shown. The return sludge and internal return liquid in the secondary settling tank are lifted by the sludge return pump and the internal return pump respectively, and then enter the cyclone. The bottom flow sludge after the cyclone treatment is returned to the front section of the anoxic tank, and the overflow is discharged separately. As residual sludge or discharged into the aerobic pool nearby. After long-term cyclone separation, the density of the sludge in the biochemical tank increases continuously, and its adsorption, dehydration and settling properties are improved.

[0058] 2. Process equipment

[0059] The key equipment in this process flow is cyclone, its structure is as follows figure 2 shown.

[0060] 3. Operation control

[0061] The operation process of the A / O experimental device: the sludge concentration in the po...

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Abstract

The invention relates to a sludge cyclone separation and activation treatment method and device. The sludge cyclone separation and activation treatment method comprises the following steps: (i) sludgebackflow separation: carrying out cyclone separation treatment on sludge so as to directionally discharge inorganic substances in the sludge as residual sludge, and returning active ingredients to abiochemical tank which comprises an anoxic tank and an aerobic tank; and (ii) internal backflow separation and activation: carrying out cyclone separation treatment on a sludge-water mixed solution atthe tail end of the aerobic tank, returning separated high-activity components to the anoxic tank for circulation, and discharging low-activity components to the aerobic tank nearby. The invention further provides the sludge cyclone separation and activation treatment device.

Description

technical field [0001] The disclosure belongs to the field of biochemical treatment of industrial and urban domestic sewage, and provides a sludge swirling sorting activation treatment method and device. Specifically, a new method for improving the comprehensive degradation performance of biochemical pools is provided by combining cyclone treatment units to realize directional sludge discharge. Background technique [0002] The activated sludge method is a treatment process for more than 90% of urban domestic sewage and more than 70% of industrial wastewater at home and abroad. It can significantly improve the quality of sewage water through aeration and degradation of organic matter and oxidation, reduction and adsorption of nutrients. In recent years, with the continuous decline of environmental carrying capacity, the state has continuously improved sewage discharge standards, and the load of existing sewage treatment plants has continued to increase; in addition, biochemi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30
CPCC02F3/30C02F2203/006C02F2001/007Y02W10/10
Inventor 刘毅许威南汪华林孙玉萧韩亚芳魏傲松马凯徐博文
Owner EAST CHINA UNIV OF SCI & TECH
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