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Sludge reduction and denitrification combined urban sewage and sludge combined treatment system

A technology for sludge reduction, nitrification and denitrification, which is applied in water/sludge/sewage treatment, sludge treatment, biological sludge treatment, etc. problems, to reduce the content of COD and N, ease the load impact, and achieve the effect of efficient treatment

Active Publication Date: 2011-08-24
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the high content of COD, N and P in the sludge supernatant after sludge reduction treatment, which must be returned to the sewage treatment system for further treatment, which will bring a large load impact to the sewage treatment system , and affect the normal operation of the sewage treatment system, and then provide a combined treatment system for urban sewage and sludge that is coupled with sludge reduction and denitrification denitrification

Method used

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  • Sludge reduction and denitrification combined urban sewage and sludge combined treatment system
  • Sludge reduction and denitrification combined urban sewage and sludge combined treatment system
  • Sludge reduction and denitrification combined urban sewage and sludge combined treatment system

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specific Embodiment approach 1

[0027] Specific implementation mode one: combine Figure 1-Figure 2 Describe this embodiment, the urban sewage sludge combined treatment system of sludge reduction and denitrification denitrification coupling of this embodiment is composed of sequencing batch type biological sewage treatment device, first sludge discharge pump 7, fourth regulating valve 6, sewage It consists of a mud reduction device, a third regulating valve 17 and a second mud discharge pump 18;

[0028] The sequence batch biological sewage treatment device is composed of sequence batch bioreactor 1, water inlet pipe 20, first mud inlet pipe 21, first mud discharge pipe 22 and first aeration equipment; the first aeration equipment consists of the first An aerator head 2, a first air intake pipe 23, a first regulating valve 3, a first air compressor 4, a first time relay 5 and a first wire 24;

[0029] The sludge reduction device is composed of a sludge reduction reactor 8, a plurality of benthic biological ...

specific Embodiment approach 2

[0035] Specific implementation mode two: combination Figure 2-Figure 4 Describe this embodiment, the main body 30 of the attachment plate of this embodiment is a rectangular plate, the ratio of the length and width of the rectangular plate is 5:3, the thickness is 1-2cm, and there are a plurality of square holes 30-1 on the rectangular plate, each Each side hole wall of each square hole 30-1 is provided with a groove 30-2, and the groove 30-2 on each side hole wall of each square hole 30-1 jointly forms a back-shaped fixing groove, so The filler 31 is fixed on the main body 30 of the attachment plate through a zigzag fixing groove. Such setting has the characteristics of high air permeability, tightness, and large specific surface area, which is conducive to the high-density growth of benthic organisms. Other compositions and connections are the same as in the first embodiment.

[0036] Specific implementation mode three: combination Figure 4 The present embodiment will b...

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Abstract

The invention relates to a sludge reduction and denitrification combined urban sewage and sludge combined treatment system and solves the problem that the normal running of a sewage treatment system is affected by the large load impact resulting from the fact that the high COD, N and P content of the sludge supernate obtained by sludge reduction treatment requires that the sludge supernate has tobe returned to the sewage treatment system to be further treated. The invention adopts a technical scheme 1 that a sludge reduction device and a sequencing batch biological sewage treatment device are combined to work and adopts a technical scheme 2 that sludge reduction device and a membrane biological sewage treatment device are combined to work. A plurality of benthic biofouling plates of the invention are all uniformly arranged in a sludge reduction reactor. The sludge reduction effect of the invention can reach 85 to 90 percent; removal rate of total nitrogen reaches 85 percent; and the system of the invention has the advantages of low investment and running cost, high efficiency of sludge reduction, good denitrification effect and no secondary pollution.

Description

technical field [0001] The invention relates to a sludge reduction and denitrification and denitrification urban sewage sludge treatment system, which belongs to the technical field of sludge treatment using biological technology. Background technique [0002] Sewage biological treatment technology has always played a huge role in the process of sewage purification. The biggest drawback of sewage biological treatment technology is that a large amount of excess sludge is produced while treating sewage. These excess sludge usually contain a considerable amount of toxic and harmful substances (such as parasites) eggs, pathogenic microorganisms, heavy metals) and unstabilized organic matter, if not properly handled and disposed of, will cause direct or potential pollution to the environment. However, sludge treatment and final disposal require a large amount of infrastructure investment and high operating costs, which can be as high as 60-70% of wastewater treatment costs. Obvi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/02C02F3/30C02F3/12C02F3/10
CPCY02W10/10Y02W10/20
Inventor 田禹卢耀斌纪超延崇建
Owner HARBIN INST OF TECH
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