Bio-drying and dehumidifying coupled heat-pump flap tower type sludge drying process and system thereof

A technology of biological drying and sludge drying, applied in biological sludge treatment, dewatering/drying/concentrating sludge treatment, sludge treatment, etc., can solve the problems of high operating cost, burden, and long drying time. , to achieve the effect of improving energy efficiency and preventing agglomeration

Inactive Publication Date: 2014-06-18
禹云环境科技(广州)有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, sludge drying mainly adopts the method of physical thermal drying, which needs to consume fossil fuels. For direct thermal drying, the drying residence time is long, the energy consumption is large, and the thermal efficiency is not high. At the same time, a large amount of tail gas is generated, which causes a burden for subsequent treatment. In addition The binding force of various water and sludge particles is quite different, and its drying characteristics are different from those of crystals, resulting in thermal drying of the partition wall, sludge is easy to agglomerate and stick to the wall, resulting in a sharp drop in heat transfer efficiency, and the energy consumption of thermal drying is too high , high

Method used

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  • Bio-drying and dehumidifying coupled heat-pump flap tower type sludge drying process and system thereof
  • Bio-drying and dehumidifying coupled heat-pump flap tower type sludge drying process and system thereof
  • Bio-drying and dehumidifying coupled heat-pump flap tower type sludge drying process and system thereof

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Experimental program
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Effect test

Embodiment 1

[0041] Such as figure 1 As shown, the water-containing sludge from the sewage treatment plant is taken. After dehydration, its water content is 79%, and its weight is 1000Kg. The organic matter accounts for 38% of the dry weight of the sludge. 50% of the finished clinker is dried with 1000Kg of sludge and 40kg of straw to obtain sludge with a moisture content of 64% and a total weight of 2040Kg. Then add 50Kg of a 10% aqueous solution of compound probiotic powder and stir evenly. The uniformly stirred sludge is added from the distributor 4 to the first layer of fermentation bin 104 of the vertical fermentation tower 1 through the raw material conveying mechanism. Type fermentation tower 1, dehumidification heat pump unit 3, dehumidification heat pump unit 3 supplies dry hot air at 45±10°C to the fermentation chamber 104, controls the temperature in the fermentation chamber 104 to be 50±5°C, and the humidity is 45% to 55%. The fresh air supply rate is 4-12 cubic meters per hou...

specific Embodiment 3

[0044] Such as Figure 1~4 As shown, a biological drying coupling dehumidification heat pump unit flap tower sludge drying system includes a vertical fermentation tower 1, the top of the vertical fermentation tower 1 is provided with a feed port 101, and the bottom is provided with a finished product The output mechanism 102 is provided with a multi-layer fermentation chamber 104 formed by several layers of flap structures 103 from top to bottom inside the vertical fermentation tower 1, and the number of layers of the flap structures 103 is 3 to 10 layers. It is preferably 4 to 5 floors. In addition, it also includes a dehumidification heat pump unit 3 composed of an evaporator 301, a compressor 302, a condenser 303 and a throttling device 304 connected end to end. An air outlet 1041 communicated with the evaporator 301, and an air inlet 1042 communicated with the condenser 303 is provided on the other side of the fermentation chamber 104 to form a dehumidification circuit. I...

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Abstract

The invention discloses a bio-drying and dehumidifying coupled heat-pump flap tower type sludge drying process and a system thereof. On one hand, the process comprises a sludge pretreatment step, so as to obtain sludge with the moisture content of 62-70%, wherein the sludge pretreatment step comprises the steps: (1) adding inoculation strains and a conditioner into the sludge with the moisture content of 62-70%, and feeding into a fermentation chamber; (2) carrying out biological aerobic fermentation treatment on the inoculation strain added sludge in the fermentation chamber for 3-10 days, and controlling the temperature of the fermentation chamber to 40-62 DEG C and the humidity of the fermentation chamber to 45-55%; (3) shipping out the sludge subjected to the biological aerobic fermentation treatment from the interior of a vertical fermentation tower, wherein the moisture content of the sludge subjected to the biological aerobic fermentation treatment is 30-50%. On the other hand, the invention further provides the system for realizing the process. The process and system disclosed by the invention have the advantages that the sludge drying effect is good, the energy consumption is low, the process and the system are suitable for continuous operation, and the like.

Description

technical field [0001] The invention relates to a dehydration and drying method for an organic water-containing urban sewage treatment plant, belonging to the field of solid waste treatment, in particular to a biological drying coupling dehumidification heat pump turnover tower sludge drying process, and a biological drying coupling dehumidification heat pump turnover process Plate tower sludge drying system. Background technique [0002] With the rapid increase of sewage treatment volume, sludge production has increased rapidly. Sludge is highly viscous and water is difficult to remove. After gravity concentration and mechanical dehydration, the water content is still as high as 85%. The cost of its treatment and disposal accounts for the operating cost of the entire sewage plant and increases year by year. The treatment and disposal of sludge has become a difficult point in the environmental field. . [0003] Sludge has a high content of organic matter and has high econo...

Claims

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Application Information

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IPC IPC(8): C02F11/02C02F11/12
CPCY02W10/20
Inventor 竺勇竺悦
Owner 禹云环境科技(广州)有限责任公司
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