Vertical flow composite type biological sludge minimization reactor and its operation method

A technology of biological sludge and operation method, which is applied in the direction of biological sludge treatment, sludge treatment, sustainable biological treatment, etc., can solve the problems of insignificant sludge reduction effect, unstable growth of protozoa and metazoa, and achieve It is easy to automatically control, improve the effect of sludge reduction, and improve the effect of sludge settlement and dewatering performance

Inactive Publication Date: 2005-06-01
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since protozoa / metazoa and bacteria grow together in the same bioreactor (aeration tank), and the operating conditions of the aeration tank are mainly conducive to the degradation of organic matter by bacteria and other microorganisms, it is not completely suitable for the growth of protozoa / metazoa, so The growth of protozoa / metazoa is unstable, which leads to insignificant sludge reduction effect

Method used

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  • Vertical flow composite type biological sludge minimization reactor and its operation method
  • Vertical flow composite type biological sludge minimization reactor and its operation method
  • Vertical flow composite type biological sludge minimization reactor and its operation method

Examples

Experimental program
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Effect test

Embodiment 1

[0050] See figure 1 and 3 . A cylindrical vertical flow composite biological sludge reduction reactor, which is divided into free-type protozoa / metazoan growth zones by perforated partitions with a porosity of 5-10% and a pore diameter of 3-5mm. The animal growth area 4 and the solid-liquid separation and sedimentation area 5 are used for reducing the amount of excess sludge discharged from the sewage biological treatment system.

[0051] In the bottom of the reactor side wall of the free type protozoa / metazoan growth zone 3, there is a sludge mixed liquid inlet 8, and in the top of the reactor side wall in the solid-liquid separation and precipitation zone 5, there is a sludge outlet 9, and the sludge The mixed liquid inlet 8 is connected with the sludge delivery pump 1 .

[0052] An aerator 2 communicated with an air compressor or blower 11 is installed in the free-type protozoan / metazoan growth zone 3, through which the aerator 2 aerates the entire reactor.

[0053] Use...

Embodiment 2

[0057] See figure 2 and 4 . A cylindrical vertical flow composite biological sludge reduction reactor, divided into free-type protozoa / metazoan growth zone 3 by a perforated partition with a porosity of 5-10% and a pore diameter of 3-5mm, and an attached type protozoa / metazoan growth zone 3 The animal growth zone 4 and the solid-liquid separation and sedimentation zone 5 are used to treat the return sludge of the conventional activated sludge process, and are integrated with the aeration tank and the secondary sedimentation tank to reduce the amount of sludge produced.

[0058] In the bottom of the reactor side wall of the free type protozoan / metazoan growth zone 3, there is a sludge outlet 9, and in the top of the reactor side wall in the solid-liquid separation and precipitation zone 5, there is a sludge mixed solution inlet 8, and the sludge The mixed liquid inlet 8 is connected to the sludge conveying pump 1; the outlet height of the sludge discharge port 9 is equal to ...

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Abstract

The present invention relates to sewage treating biological apparatus, and is especially one kind of vertically flowing composite biological sewage reducing reactor and its operation process. The vertically flowing composite biological sewage reducing reactor is separated with partition boards into three parts, including free protozoan/metazoan growth area, attached protozoan/metazoan growth arean and solid-liquid separating area. The vertically flowing composite biological sewage reducing reactor provides different protozoan/metazoan with proper habitat for stable growth, and thus has effectively raised sewage reducing effect. The present invention may be used in the reducing treatment of residual sewage from biological sewage treating system and in the treatment of reflux sewage in conventional active sewage treating system.

Description

technical field [0001] The invention belongs to the field of equipment for treating sludge by using biological technology, and in particular relates to a vertical flow composite biological sludge reduction reactor and an operating method thereof. Background technique [0002] Activated sludge method is currently the most widely used biological treatment technology in urban sewage and industrial wastewater treatment plants in the world, but a large amount of residual sludge is generated during operation. Usually, the treatment and disposal of excess sludge accounts for about 40% of the operating costs of the entire sewage treatment plant. If the remaining sludge cannot be effectively treated and disposed of, it will directly affect the normal operation of the sewage treatment plant and cause secondary pollution. [0003] The usual principles of sludge treatment and disposal are stabilization, harmlessness and resource utilization. At present, the ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/02
CPCY02W10/10Y02W10/20
Inventor 魏源送郭雪松刘俊新
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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