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Sludge carbonizing method

A technology of sludge and carbonization system, which is applied in biological sludge treatment, pyrolysis sludge treatment, dehydration/drying/concentrated sludge treatment, etc. It can solve the problems of laborious cutting into small pieces, low drying efficiency and easy generation of sludge Odor and other problems, to achieve the effect of increasing the specific surface area, conducive to drying, and avoiding health

Inactive Publication Date: 2019-04-19
ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a sludge carbonization method, which solves the problem that the existing sludge is easy to generate odor after being stored for a long time, and the odor cannot be effectively treated during treatment, and it is easy to damage the working staff. Healthy, while the drying efficiency is low, and it is more laborious to cut into small pieces after drying

Method used

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  • Sludge carbonizing method

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Embodiment 1

[0027] A sludge carbonization method, comprising the following steps,

[0028] (1) Sludge deodorization, configure deodorizing bacteria according to the formula, add deodorizing bacteria after the sludge is heated up, stir and let it stand for 2 hours;

[0029] (2) Drying, sending the sludge into the drier to dry to a water content of 85%, then use a press to press into a honeycomb shape, put it into the drier and continue drying until the water content is 70%;

[0030] (3) carbonization, chop the dried sludge into small pieces, pressurize it and send it into the carbonization system, and cool to room temperature after carbonization;

[0031] (4) Recycling, the carbonized sludge is pressed into a net shape, and three pieces of carbonized sludge nets are used to overlap to form a simple filter device, and the sludge in step (1) is passed through the filter device for deodorization. ;

[0032] (5) Carbonized sludge treatment, the filtered carbonized sludge net is dried and use...

Embodiment 2

[0042] A sludge carbonization method, comprising the following steps,

[0043] (1) Sludge deodorization, configure deodorizing bacteria according to the formula, add deodorizing bacteria after the sludge is heated up, stir and let it stand for 2-10 hours;

[0044] (2) Drying, sending the sludge into the drier to dry to a water content of 88%, then use a press to press into a honeycomb shape, put it into the drier and continue drying until the water content is 75%;

[0045] (3) carbonization, chop the dried sludge into small pieces, pressurize it and send it into the carbonization system, and cool to room temperature after carbonization;

[0046] (4) Recycling, pressing the carbonized sludge into a net shape, using 4 carbonized sludge nets to overlap to make a simple filter device, passing the sludge in step (1) through the filter device and then performing deodorization ;

[0047] (5) Carbonized sludge treatment, the filtered carbonized sludge net is dried and used for burni...

Embodiment 3

[0057] A sludge carbonization method, comprising the following steps,

[0058] (1) Sludge deodorization, configure deodorizing bacteria according to the formula, add deodorizing bacteria after the sludge is heated up, stir and let it stand for 10 hours;

[0059] (2) Drying, sending the sludge into the drier to dry to a water content of 90%, then use a press to press into a honeycomb shape, put it into the drier and continue drying until the water content is 80%;

[0060] (3) carbonization, chop the dried sludge into small pieces, pressurize it and send it into the carbonization system, and cool to room temperature after carbonization;

[0061] (4) Recycling, the carbonized sludge is pressed into a net shape, and 5 carbonized sludge nets are overlapped to make a simple filter device, and the sludge in step (1) is passed through the filter device for deodorization ;

[0062] (5) Carbonized sludge treatment, the filtered carbonized sludge net is dried and used for burning.

[00...

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Abstract

The invention discloses a sludge carbonizing method, and relates to the technical field of sludge treatment. The method comprises the following steps of sludge deodorization, wherein deodorization bacteria are prepared according to a formula, sludge is heated, deodorization bacteria are added, and after stirring is performed, standing is performed for 2-10 h; drying, wherein sludge is supplied into a drying machine to be dried till the water content is 85-90%, then, a pressing machine is used for pressing to form a honeycomb shape, and the pressed sludge is placed into the drying machine to continuous drying till the water content is 70-80%; carbonizing; recycling, wherein the carbonized sludge is pressed into meshes, 3-5 carbonized sludge meshes are stacked to form a simple filter device,and the sludge in step 1 penetrates through the filter device for the deodorization link; sludge carbonizing, wherein the filtered carbonized sludge meshes are dried for combustion. According to thesludge carbonizing method, odor caused after sludge is stored for a long time is effectively removed, damage to health of workers is avoided, meanwhile, the carbonizing efficiency of the dried sludgeis improved, and more labor is saved in the process when sludge is cut into small pieces after drying.

Description

technical field [0001] The invention relates to the technical field of sludge treatment, in particular to a sludge carbonization method. Background technique [0002] Sludge is the product of sewage treatment. It is an extremely complex heterogeneous body composed of organic debris, bacterial cells, inorganic particles, colloids, etc. The main feature of sludge is high water content (up to 99% or more) ), high organic content, easy to rot and smell, and fine particles, small specific gravity, colloidal liquid, it is a thick substance between liquid and solid, it can be transported by pump, but it is difficult to pass through sedimentation Perform solid-liquid separation. The existing sludge is easy to generate odor after being stored for a long time, and the odor cannot be effectively treated during treatment, which is easy to damage the health of the staff. At the same time, the drying efficiency is low, and it is laborious to cut into small pieces after drying. Contents...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/02C02F11/13C02F11/10
CPCC02F11/02C02F11/10C02F11/12
Inventor 薛向东庄海峰方程冉陈勇民汪华
Owner ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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