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Intelligent control technique for sludge continuous deep dewatering

A technology of deep dehydration and process method, which is applied in the direction of dehydration/drying/concentrated sludge treatment, etc. It can solve the problems of different sludge volume, uncertain discharge time, and affecting the normal operation of equipment, so as to improve treatment efficiency and overcome adverse effects Effect

Active Publication Date: 2015-11-11
ZHEJIANG HUAZHANG TECH
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AI Technical Summary

Problems solved by technology

[0003] 1. The parameter control of the sludge dewatering process at each stage is basically adjusted manually, and the discharge time of various sludges in the water treatment stage is uncertain (the sludge produced in general water treatment includes primary sludge, biochemical sludge and chemical sludge. three kinds of sludge), and the three kinds of sludge are mixed together from time to time to enter the next treatment stage. Because the moisture content of the three kinds of sludge is different, the amount of sludge is also different, resulting in unstable components of the sludge
[0004] 2. Sludge dehydration needs to add chemicals to make the sludge flocculate into agglomerates, and the sludge particles and free water are separated to facilitate the dehydration operation. However, the difference in sludge components leads to different dosages of chemicals that need to be added, and it is only adjusted manually , not only the workload is heavy, but the effect is not ideal. Too much chemical addition will lead to waste, and too small chemical addition will affect the sludge dehydration effect.
[0005] 3. The sludge feed volume after dosing and flocculation is not matched with the operating parameters of the dehydration equipment, which not only affects the normal operation of the equipment, but also reduces the final treatment volume and dryness of the sludge.
[0006] 4. At present, the existing sludge dewatering process requires a stepwise operation method from low concentration to medium concentration, and then from medium concentration to high concentration. There is a lack of treatment equipment for directly converting low concentration sludge into high concentration sludge and process steps

Method used

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Examples

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Effect test

Embodiment 1

[0063] Example 1: Three kinds of low-concentration sludge with a solid content of 1-3% produced in the water treatment section (primary sludge concentration 3%, biochemical sludge concentration 2.4%, chemical sludge concentration 2.2%), respectively Simultaneously pump from the thickening tank and two buffer tanks to the mixing tank through their respective lift pumps, of which the amount of primary sludge is 650-750T / D, the amount of biochemical sludge is 380-450T / D, and the amount of chemical sludge is 280-340T / D D, The parameters of the three pumps to the mixing tank are: flow rate 150 cubic meters per hour, head 50 meters. The pumping time of the primary sedimentation tank is set to 15 minutes / time, the pumping time of biochemical mud is set to 12 minutes / time, the pumping time of chemical mud is set to 10 minutes / time, and the overall interval time is 14-18 minutes, taking the primary sedimentation time as Benchmark, the sludge pump parameter flow rate is 100 cubic meters...

Embodiment 2

[0064] Example 2: Three kinds of low-concentration sludge with a solid content of 1-3% produced in the water treatment section (primary sludge concentration 3%, biochemical sludge concentration 2.0%, chemical sludge concentration 2.1%), respectively Pumping from the thickening tank and two buffer tanks to the mixing tank at the same time through their respective lift pumps, the amount of primary sludge is 450-550T / D, the amount of biochemical sludge is 380-440T / D, and the amount of chemical sludge is 80-130T / D D, The parameters of the three pumps to the mixing tank are: flow rate 120 cubic meters per hour, head 80 meters. The pumping time of the primary sedimentation tank is set to 12 minutes / time, the pumping time of biochemical mud is set to 10 minutes / time, the pumping time of chemical mud is set to 5 minutes / time, and the overall interval is 6-10 minutes. Benchmark, the sludge pump parameter flow rate is 100 cubic meters per hour and the head is 80 meters. Since the pumpi...

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Abstract

The invention relates to an intelligent control technique for sludge continuous deep dewatering. The technique implements stable proportioning of three sludges with different concentrations generated in the water treatment stage to ensure the sludge component consistency and achieve accurate control on reagent proportioning, thereby implementing automatic matching between the feed rate and operation parameters of dewatering equipment in the sludge dewatering stage, and further satisfying the final daily treatment capacity and fine dryness of the sludge. The technique has the characteristics of high dewatering efficiency and favorable effect.

Description

technical field [0001] The invention relates to a sludge dehydration process method, in particular to a sludge continuous deep dehydration intelligent control process method. Background technique [0002] The existing sludge dewatering process mainly has the following deficiencies: [0003] 1. The parameter control of the sludge dewatering process at each stage is basically adjusted manually, and the discharge time of various sludges in the water treatment stage is uncertain (the sludge produced in general water treatment includes primary sludge, biochemical sludge and chemical sludge. Three kinds of sludge), and the three kinds of sludge are mixed together from time to time to enter the next treatment stage. Because the moisture content of the three kinds of sludge is different, the amount of sludge is also different, resulting in unstable components of the sludge. [0004] 2. Sludge dehydration needs to add chemicals to make the sludge flocculate into agglomerates, and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/12
Inventor 崔建陈伟龙程剑冰
Owner ZHEJIANG HUAZHANG TECH
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