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Sludge treatment method

A sludge treatment and sludge technology, applied in sludge treatment, biological sludge treatment, water/sludge/sewage treatment, etc., can solve the problem of insufficient utilization of sludge

Pending Publication Date: 2021-03-09
SATERI JIUJIANG FIBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The inventor found that when treating sludge, directly subjecting sludge to high temperature treatment can effectively recover combustible gas, but the utilization rate of sludge is still not enough

Method used

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  • Sludge treatment method

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Effect test

Embodiment 1

[0033] A sludge treatment method is characterized in that comprising the steps of:

[0034] Primary treatment: pass the sludge through the grid plate for preliminary filtration;

[0035] Ultrasonic treatment: Ultrasonic treatment is performed on the sludge that has undergone primary treatment, and the vibration frequency is 40KHz;

[0036] Ozone fermentation treatment: mix the ultrasonically treated sludge with the fermentation liquid, add a pH regulator, adjust the pH to 5.0-6.5, and the treatment time is 2-4 days, during which the generated gas is collected;

[0037] Solidification treatment: add solidification agent to the sludge treated by ozone fermentation, and treat it for 30-50 minutes.

[0038] Pyrolysis treatment: heat the solidified sludge to 450-550°C, and the treatment time is 1-2h, during which the generated gas is collected.

[0039] The pH regulator includes acetic acid and sodium bicarbonate, the fermentation broth includes Bacillus pumilus, Enterobacter cloac...

Embodiment 2

[0041] A sludge treatment method is characterized in that comprising the steps of:

[0042] Primary treatment: pass the sludge through the grid plate for preliminary filtration;

[0043] Ultrasonic treatment: Ultrasonic treatment is performed on the sludge that has undergone primary treatment, and the vibration frequency is 20KHz;

[0044] Ozone fermentation treatment: mix the ultrasonically treated sludge with the fermentation liquid, add a pH regulator, adjust the pH to 5.0-6.5, and the treatment time is 2-4 days, during which the generated gas is collected;

[0045] Solidification treatment: add solidification agent to the sludge treated by ozone fermentation, and treat it for 30-50 minutes.

[0046] Pyrolysis treatment: heat the solidified sludge to 450-550°C, and the treatment time is 1-2h, during which the generated gas is collected.

[0047] The pH regulator includes acetic acid and sodium bicarbonate, the fermentation bacteria liquid includes denitrifying bacteria, p...

Embodiment 3

[0049] A sludge treatment method is characterized in that comprising the steps of:

[0050] Primary treatment: pass the sludge through the grid plate for preliminary filtration;

[0051] Ultrasonic treatment: Ultrasonic treatment is performed on the sludge that has undergone primary treatment, and the vibration frequency is 60z;

[0052] Ozone fermentation treatment: mix the ultrasonically treated sludge with the fermentation liquid, add a pH regulator, adjust the pH to 5.0-6.5, and the treatment time is 2-4 days, during which the generated gas is collected;

[0053] Solidification treatment: add solidification agent to the sludge treated by ozone fermentation, and treat it for 30-50 minutes.

[0054] Pyrolysis treatment: heat the solidified sludge to 450-550°C, and the treatment time is 1-2h, during which the generated gas is collected.

[0055] The pH regulator includes acetic acid and sodium bicarbonate, the fermented bacteria liquid includes Bacillus pumilus, Enterobacte...

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Abstract

The invention relates to a sludge treatment method. The method comprises the following steps: primary treatment: primarily filtering sludge through a grating plate; ultrasonic treatment: carrying outultrasonic treatment on the sludge subjected to primary treatment, wherein the vibration frequency is 20-40 KHz; ozone fermentation treatment: mixing the sludge subjected to ultrasonic treatment witha zymophyte solution, adding a pH regulator, and collecting generated gas during the period; and curing treatment: adding a curing agent into the sludge subjected to ozone fermentation treatment, andtreating for 30-50 minutes. According to the sludge treatment method disclosed by the invention, large impurities are filtered out through a grating plate, then a cell structure and a floc matrix aredestroyed by using ultrasonic waves, substances in cells are released, subsequent bio-degradation is facilitated, then through ozone fermentation treatment, combustible gas is collected, and then theremaining sludge is solidified and pyrolyzed, so that the utilization rate of the sludge is maximized.

Description

technical field [0001] The invention relates to the field of sludge treatment, in particular to a sludge treatment method. Background technique [0002] As a regular product of urban sewage treatment plants and industrial enterprise sewage treatment stations, sludge plays an important role in the process of energy saving, emission reduction and ecological construction. Sewage treatment plants in cities and enterprises in our country produce a large amount of wet sludge every day, and sludge is the concentration of pollutants in the water treatment process, mainly composed of microbial cell groups and their disintegration products. In addition to high organic matter content, it also contains a large amount of Harmful substances such as heavy metal ions and pathogenic bacteria, and have the characteristics of high water content, large volume, complex shape, and difficult transportation. If the sludge is not treated in a timely and effective manner, it will threaten human life...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/121C02F11/15C02F11/04C02F11/00C02F11/10
CPCC02F11/121C02F11/15C02F11/04C02F11/008C02F11/10
Inventor 马驰刘兵王兵游坤龙胡修树张永雷曹斌彭善俊张文涛
Owner SATERI JIUJIANG FIBER CO LTD
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