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

A biological sludge and reactor technology, which is applied in biological sludge treatment, chemical instruments and methods, biological water/sewage treatment, etc., can solve the problems of unstable growth of protozoa and metazoa and ineffective sludge reduction, etc. Problems, to achieve easy automatic control, improve the effect of sludge reduction, and improve the effect of sludge settling and dewatering performance

Inactive Publication Date: 2006-08-09
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 and metazoa and bacteria grow together in the same bioreactor (aeration tank), the operating conditions of the aeration tank are mainly conducive to the degradation of organic matter by microorganisms such as bacteria, and are not completely suitable for the growth of protozoa and metazoa. , so the growth of protozoa and metazoa is unstable, which leads to the insignificant effect of sludge reduction

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

[0051] See figure 1 with 3 . A cylindrical vertical flow composite biological sludge reduction reactor, which is divided into free protozoa and metazoan growth areas by a perforated partition with a porosity of 5-10% and a pore diameter of 3-5mm. 3. Adherent protozoa And the metazoan growth zone 4 and the solid-liquid separation sedimentation zone 5 are used to reduce the amount of surplus sludge discharged from the sewage biological treatment system.

[0052] There is a sludge mixture inlet 8 at the lower part of the reactor side wall of the free-type protozoa and metazoan growth zone 3, and a sludge outlet 9 is provided at the upper part of the reactor side wall of the solid-liquid separation sedimentation zone 5. The sludge mixture inlet 8 is connected with the sludge transfer pump 1.

[0053] An aerator 2 connected with an air compressor or a blower 11 is installed in the free-type protozoan and metazoan growth zone 3, and the entire reactor is aerated through the aerator 2. ...

Embodiment 2

[0058] See figure 2 with 4 . A cylindrical vertical flow composite biological sludge reduction reactor is divided into free protozoa and metazoan growth zone 3 by perforated partitions with a porosity of 5-10% and a pore diameter of 3-5mm. 3, attached protozoa The metazoan growth area 4 and the solid-liquid separation sedimentation area 5 are used to treat the return sludge of the conventional activated sludge method, and are integrated with the aeration tank and the secondary settling tank to reduce the amount of sludge produced.

[0059] There is a sludge discharge port 9 at the lower part of the reactor side wall of the free-type protozoan and metazoan growth zone 3, and a sludge mixed liquid inlet 8 is provided at the upper part of the reactor side wall of the solid-liquid separation sedimentation zone 5. The sludge mixture inlet 8 is connected to the sludge transfer pump 1; the height of the outlet of the sludge outlet 9 is equal to the height of the sludge mixture inlet 8 t...

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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 particularly relates to a vertical flow composite biological sludge reduction reactor and an operation 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 it produces a large amount of excess sludge during operation. Generally, the treatment and disposal of surplus sludge accounts for about 40% of the operating cost of the entire sewage treatment plant. If the remaining sludge cannot be effectively treated and disposed, it will directly affect the normal operation of the sewage treatment plant and cause secondary pollution. [0003] The general principles of sludge treatment and disposal are stabilization, harmlessness and resource utilization. At present, the main treatment...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/02C02F3/32C02F3/12
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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