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A single continuous conditioning tank multi-press filter sludge dewatering system and method

A sludge dewatering and conditioning tank technology, applied in water/sludge/sewage treatment, sludge treatment, chemical instruments and methods, etc. Cloth cleaning is not clean and other problems, to achieve the effect of short conditioning time, low operation and maintenance costs, and good dehydration effect

Active Publication Date: 2016-05-18
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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  • A single continuous conditioning tank multi-press filter sludge dewatering system and method
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  • A single continuous conditioning tank multi-press filter sludge dewatering system and method

Examples

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Effect test

Embodiment 1

[0048] A method for dewatering sludge in a single continuous conditioning tank with multiple filter presses, the specific steps are as follows: the sludge in the sludge thickening tank 11 is first concentrated by the sludge thickener 12 to a sludge moisture content of 89%, and then passed through the screw feed pump 13 With a flow rate greater than 1m / s and a flow rate of 0.0181m 3 / s to the pipeline mixer 22, while the tail water reuse device 4 automatically reuses the tail water to the pipeline mixer 22, adjusts 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 Proportion with dry sludge according to weight ratio respectively, the ratios are 0.1875, 0.261 and 0.23 in sequence, and mixed with sludge in pipeline mixer 22, and the mixed sludge is continuously and dynamically changed from radius r=1.8m under the condition of 4°C The bottom of the conditioning tank 21 enters (the liquid level height of the outlet of the c...

Embodiment 2

[0050] A method for dewatering sludge in a single continuous conditioning tank with multiple filter presses, the specific steps are as follows: the sludge in the sludge thickening tank 11 is first concentrated by the sludge thickener 12 to a sludge moisture content of 91%, and then passed through the screw feed pump 13 With a flow rate greater than 1m / s and a flow rate of 0.0243m 3 / s to the pipeline mixer 22, while the tail water reuse device 4 automatically reuses the tail water to the pipeline mixer 22, adjusts 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 Proportion with dry sludge according to the weight ratio respectively, the ratios are 0.1875, 0.261 and 0.23 in turn, and mix with sludge in pipeline mixer 22. Under the condition of 30℃, the mixed sludge is continuously and dynamically changed from radius r=1.8m The bottom of the conditioning tank 21 enters (the liquid level of the outlet of the conditioning ...

Embodiment 3

[0052] A method for dehydrating sludge in a single continuous conditioning tank with multiple filter presses. The specific steps are as follows: the sludge in the sludge thickening tank 11 is first concentrated by the sludge thickener 12 to a sludge moisture content of 90%, and then passed through the screw feed pump 13. With a flow rate greater than 1m / s and a flow rate of 0.0238m 3 / s to the pipeline mixer 22, while the tail water reuse device 4 automatically reuses the tail water to the pipeline mixer 22, adjusts 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 Proportion with dry sludge according to weight ratio respectively, the ratios are 0.1875, 0.261 and 0.0236 in turn, and mixed with sludge in pipeline mixer 22, and the mixed sludge is continuously and dynamically changed from radius r=1.8m under the condition of 4°C The bottom of the conditioning tank 21 enters (the liquid level of the outlet of the cond...

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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 dewatering treatment technology, in particular to a single continuous conditioning tank multiple filter press sludge dewatering system and method. Background technique [0002] In recent years, my country's economy has developed 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 a huge surplus of sludge in the process of sewage treatment. Sludge is an extremely complex heterogeneous body composed of inorganic particles, organic fragments, bacterial clusters, colloids, etc. Its particle size is fine, and its content of organic substances, heavy metals, and pathogenic bacteria is high, and it is in a colloidal liquid state or semi-solid state. The main characteristic of the excess sludge produced by the sewage treatment plant is that it is extremely hydrophilic, which can be ...

Claims

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Application Information

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Patent Type & Authority Patents(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