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Multi-filter sludge dewatering system and method for single continuously conditioning pool

A technology for sludge dehydration and conditioning tanks, applied in water/sludge/sewage treatment, sludge treatment, chemical instruments and methods, etc. Long mud conditioning time and other problems, to achieve the effect of short conditioning time, low operation and maintenance costs, and good dehydration effect

Active Publication Date: 2014-07-16
深圳市洪桦环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the dewatering process of excess sludge, there are still problems such as long sludge conditioning time, high moisture content and low solid content of sludge cake, unclean filter cloth cleaning, and low solid recovery rate.
Moreover, since the current sludge conditioning mainly adopts the batch-type conditioning process, it is necessary to build multiple conditioning tanks or sludge storage tanks after conditioning to meet the treatment requirements, which leads to a large area of ​​conditioning equipment, low conditioning efficiency, and high operating costs. question

Method used

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  • Multi-filter sludge dewatering system and method for single continuously conditioning pool
  • Multi-filter sludge dewatering system and method for single continuously conditioning pool
  • Multi-filter sludge dewatering system and method for single continuously conditioning pool

Examples

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Effect test

Embodiment 1

[0048] A single continuous conditioning tank and multiple filter sludge dewatering method, the specific steps are as follows: the sludge in the sludge thickening tank 11 is first concentrated by a sludge thickener 12 to a sludge moisture content of 89%, and then passed through a screw feed pump 13 With a flow velocity greater than 1m / s and a flow rate of 0.0181m 3 / s is sent to the pipeline mixer 22, while the tail water reuse device 4 automatically reuses the tail water to the pipeline mixer 22 to adjust the sludge moisture content to 92%, and the conditioning agent 30%H 2 O 2 , FeSO 4 ·7H 2 O and H 2 SO 4 According to the weight ratio and the dry sludge ratio, the ratios are 0.1875, 0.261 and 0.23. The sludge is mixed in the pipeline mixer 22, and the mixed sludge is continuously dynamic from the radius r=1.8m under the condition of 4℃. The bottom of the conditioning tank 21 enters (the height of the discharge port of the conditioning tank 21 is 1.42m). When the liquid level in...

Embodiment 2

[0050] A method for dewatering sludge in a single continuous conditioning tank with multiple pressure filters. The specific steps are as follows: the sludge in the sludge thickening tank 11 is first concentrated by a sludge thickener 12 to a sludge moisture content of 91%, and then passed through a screw feed pump 13 With flow velocity greater than 1m / s, flow rate 0.0243m 3 / s is sent to the pipeline mixer 22, while the tail water reuse device 4 automatically reuses the tail water to the pipeline mixer 22 to adjust the sludge moisture content to 92%, and the conditioning agent 30%H 2 O 2 , FeSO 4 ·7H 2 O and H 2 SO 4 According to the weight ratio and the dry sludge ratio, the ratios are 0.1875, 0.261 and 0.23. The sludge is mixed in the pipeline mixer 22. The mixed sludge is continuously and dynamically from the radius r=1.8m under the condition of 30℃. The bottom of the conditioning tank 21 enters (the height of the discharge port of the conditioning tank 21 is 1.56m). When the ...

Embodiment 3

[0052] A method for dewatering sludge in a single continuous conditioning tank with multiple pressure filters. The specific steps are as follows: the sludge in the sludge thickening tank 11 is first concentrated by a sludge thickener 12 to a sludge moisture content of 90%, and then passed through a screw feed pump 13 With flow velocity greater than 1m / s, flow rate 0.0238m 3 / s is sent to the pipeline mixer 22, while the tail water reuse device 4 automatically reuses the tail water to the pipeline mixer 22 to adjust the sludge moisture content to 92%, and the conditioning agent 30%H 2 O 2 , FeSO 4 ·7H 2 O and H 2 C 2 O 4 According to the weight ratio and the dry sludge ratio, the ratios are 0.1875, 0.261 and 0.0236 respectively. The sludge is mixed in the pipeline mixer 22, and the mixed sludge is continuously and dynamically from the radius r=1.8m under the condition of 4℃. The bottom of the conditioning tank 21 enters (the height of the discharge port of the conditioning tank 21...

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Abstract

The invention discloses multi-filter sludge dewatering system and method for a single continuously conditioning pool. The sludge dewatering system comprises a sludge concentrating device, a sludge conditioning device, a filter device and a tail water recycling device, wherein the sludge concentrating device is connected with the sludge conditioning device; the tail water recycling device is connected with the sludge conditioning device and the filter device; a single conditioning pool which can continuously run, and is of a bottom-feeding and top-discharging structure is arranged on the sludge conditioning device; more than two sets of filter components are arranged on the filter device and connected to the conditioning pool in parallel. The sludge dewatering method comprises the following steps: S1, concentrating the sludge through the sludge concentrating device and then feeding to the sludge conditioning device; S2, adding a conditioning agent to the concentrated sludge by the sludge concentrating device, adding a part of tail water, mixing and continuously feeding to the conditioning pool; S3, continuously conveying the sludge to the filter components in the filter device for filtering and dewatering treatment after the sludge is conditioned in the conditioning pool; S4, filtering and forming the sludge into filter cakes through the filter components, and transporting by a carrier vehicle to the outside.

Description

Technical field [0001] The invention relates to sludge conditioning and filter press dehydration treatment technology, in particular to a single continuous conditioning tank and multiple filter press sludge dewatering system and method. Background technique [0002] In recent years, my country’s economy has grown by leaps and bounds. However, with the acceleration of urbanization, the population is concentrated and the amount of domestic sewage has increased sharply, resulting in huge excess sludge in the sewage treatment process. Sludge is an extremely complex heterogeneous body composed of inorganic particles, organic debris, bacterial clumps, colloids, etc. It has a small particle size and a high content of organic matter, heavy metals and pathogenic bacteria. It is in a colloidal liquid or Semi-solid state. The main characteristic of the surplus sludge produced in the sewage treatment plant is that it is extremely hydrophilic, which can be as high as 99%, and it is easy to s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/00C02F11/12
Inventor 袁兴中吴志斌陈晓红王侯钟华曾光明梁婕陈耀宁
Owner 深圳市洪桦环保科技有限公司