Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of circulating egsb reaction device and sewage treatment method based on the device

A sewage treatment method and reaction device technology, applied in the field of circulating EGSB reaction device, can solve the problems affecting the long-term stability of denitrification performance, slow growth of anaerobic ammonium oxidizing bacteria, sludge accumulation, etc., to increase the effective working biomass , increase the effective collision probability, and improve the effect of denitrification efficiency

Active Publication Date: 2021-03-26
TONGJI UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when the anammox process is run in the existing EGSB reactor, due to the slow proliferation of anammox bacteria and the high nitrogen load, the amount of nitrogen produced is large and violent, often causing serious sludge flotation problems, which in turn lead to sludge accumulation, corrosion or loss, etc., which affect the long-term stability of the denitrification performance of the anaerobic ammonium oxidation process system

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of circulating egsb reaction device and sewage treatment method based on the device
  • A kind of circulating egsb reaction device and sewage treatment method based on the device
  • A kind of circulating egsb reaction device and sewage treatment method based on the device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] like figure 1 Shown is a circulating EGSB reaction device, which includes a reaction unit, a gas separation unit and a sewage water inlet unit. The reaction unit includes a reactor housing 11 and a sludge collection mechanism arranged in the reactor housing 11. The gas The separation unit includes a separator 10 arranged outside the reactor shell 11 and communicated with the sludge collection mechanism. The bottom of the separator 10 communicates with the bottom of the reactor shell 11, and an exhaust port is opened on the top, and the sewage enters The water unit communicates with the separator 10 .

[0039] Wherein, the reactor housing 11 includes a rectifying section 1101, a reaction section 1102, an expanding section 1103 and a drainage section 1104 connected in sequence from bottom to top. The bottom of the separator 10 communicates with the rectification section 1101 . A circulation pump 5 is provided between the bottom of the separator 10 and the rectifying sec...

Embodiment 2

[0047] A kind of sewage treatment method based on the circulating EGSB reaction device in embodiment 1 is: the sewage to be treated in the sewage water inlet unit enters the reactor shell 11 through the separator 10, and in the reactor shell 11 from bottom to bottom At the same time, the anammox sludge in the reactor shell 11 is denitrified; part of the denitrified sewage is discharged from the reactor shell 11, and the other part is mixed with anammox sludge , and enter the separator 10 through the sludge collection mechanism, and mix with the sewage to be treated in the separator 10; the gas in the separator 10 is discharged from the exhaust port.

[0048] Wherein, in the reactor shell 11, the volatile sludge concentration of the anammox sludge is ≥3000mg / L, the ascending flow rate of the liquid flow is 4m / h, the hydraulic retention time is 20h, and the reaction temperature is 30°C.

Embodiment 3

[0050] In this embodiment, in the reactor shell 11, the volatile sludge concentration of the anaerobic ammonium oxidation sludge is 3000mg / L, the ascending velocity of the liquid flow is 5m / h, the hydraulic retention time is 15h, and the reaction temperature is 35°C , all the other are with embodiment 2.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a circular EGSB (expanded granular sludge bed) reaction device and a sewage treatment method based on the same. The device comprises a reaction unit, a gas separation unit anda sewage inlet unit, wherein the reaction unit comprises a reactor casing and a sludge collecting mechanism arranged in the reactor casing; the gas separation unit comprises a separator arranged outside the reactor casing and communicated with the sludge collecting mechanism, the bottom of the separator is communicated with the bottom of the reactor casing, an exhaust port is formed in the top ofthe separator, and the sewage inlet unit is communicated with the separator; during treatment of sewage, one part of sewage subjected to denitrification treatment is discharged from the reactor casing, and the other part of the sewage is mingled with anaerobic ammonia oxidized sludge and enters the separator via the sludge collecting mechanism. Compared with the prior art, the device and the method realize collection of floating sludge to the maximum and avoid aggregation, retention and corrosion of high-activity sludge in a non-reaction area, the denitrification efficiency of the anaerobic ammonia oxidized sludge is improved, and granulation of the anaerobic ammonia oxidized sludge is promoted.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and relates to a circulating EGSB reaction device and a sewage treatment method based on the device. Background technique [0002] The discovery of anammox bacteria provides a new option and a new concept for the biological denitrification of sewage. The anaerobic ammonium oxidation sludge denitrification process of sewage is usually carried out in an anaerobic reactor. The widely used anaerobic reactor is UASB (upflow anaerobic sludge bed) reactor. The operation of this type of anaerobic reactor And maintenance is relatively simple, and the continuous flow operation mode makes it more suitable for dealing with the continuous generation of sewage to be treated. EGSB (expanded granular sludge bed) reactor is the third generation anaerobic reactor developed and improved on the basis of UASB reactor. Because of its simple structure, high load and wide adaptability, it is widely praised at ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/28
CPCC02F3/28
Inventor 王亚宜倪凌峰林喜茂
Owner TONGJI UNIV