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Composite sludge deep dehydration conditioner as well as application and application method thereof

A technology of deep dehydration and application method, which is applied in the direction of water/sludge/sewage treatment, sludge treatment, chemical instruments and methods, etc. It can solve the problems of high dosage of conditioning agent, cumbersome conditioning process, and high price, and achieve Improve sludge settling performance, good physical and chemical stability, and reduce interfacial tension

Active Publication Date: 2020-08-04
山东益源环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its main advantage is high treatment efficiency, but the disadvantage is that the conditioning time is too long, the dosage of conditioner is high, the cost is high, and the dewatered sludge is alkaline, which is not conducive to subsequent disposal
[0011] (1) The composition of the conditioning agent is complex, the conditioning time is long, the conditioning process is cumbersome, and the time and labor costs are high
[0012] (2) The dosage of conditioning agent is large, the volume increase is obvious, the price is expensive, and the subsequent sludge transportation and disposal costs are increased
[0013] (3) Some sludge needs to be treated by adjusting pH or heating, which consumes a lot of energy and is easy to cause equipment corrosion
[0014] (4) Some use CPAM, which is difficult to degrade, and the free acrylamide monomer has neurotoxicity, which is easy to cause secondary pollution
[0015] (5) Catalysts, initiators, activators, etc. need to be added, with high cost and large sludge increment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The composite sludge deep dehydration conditioner designed by the patent of the present invention is applied to the first embodiment of municipal sludge deep dehydration. In this embodiment, the operation is as follows:

[0049] (1) To 80m to be processed 3 To the sludge, add 0.88kg potassium monopersulfate composite powder, which is pre-prepared into a 10g / L solution and added, and then stir at 100 revolutions / min for 15 minutes after adding.

[0050] (2) Add 17.6kg of 1250 mesh talc and stir at 100 revolutions per minute for 5 minutes.

[0051] (3) Finally, add 35.2 kg of polydimethyldiallylammonium chloride with a solid content of 19% and a viscosity of 1000 cps, and stir for 10 minutes at a speed of 100 revolutions / minute.

[0052] (4) After the conditioning is completed, enter the diaphragm plate and frame filter press for pressure filtration. The pressure of the press filter is 0.9-1.0MPa. After the filter press is completed, the mud cake does not stick to the filter cloth...

Embodiment 2

[0054] The composite sludge deep dehydration conditioner designed by the patent of the present invention is applied to the second embodiment of municipal sludge deep dehydration. In this embodiment, the operation is as follows:

[0055] (1) To 80m to be processed 3 To the sludge, add 0.44 kg of potassium monopersulfate composite powder, which is pre-prepared into a 10 g / L solution and added, and stirred at a speed of 200 rpm for 10 minutes.

[0056] (2) Add 8.8 kg of 2000 mesh talcum powder and stir at 200 revolutions per minute for 3 minutes.

[0057] (3) Finally, add 17.6kg of polydimethyldiallylammonium chloride with a solid content of 20% and a viscosity of 2000cps, and stir for 8min at a speed of 200 revolutions / min.

[0058] (4) After the conditioning is completed, enter the diaphragm plate and frame filter press for pressure filtration. The pressure of the press filter is 0.9-1.0MPa. After the filter press is completed, the mud cake does not stick to the filter cloth, the water ...

Embodiment 3

[0060] The composite sludge deep dehydration conditioner designed by the patent of the present invention is applied to the third embodiment of municipal sludge deep dehydration. In this embodiment, the following steps are performed:

[0061] (1) To 80m to be processed 3 To the sludge, add 0.66kg of potassium monopersulfate composite powder, which is pre-prepared into a 10g / L solution and added, and stirred at a speed of 100 revolutions / min for 15 minutes.

[0062] (2) Add 13.2kg of 3000 mesh talcum powder and stir for 5 minutes at a speed of 100 revolutions per minute.

[0063] (3) Finally, add 26.4kg of polydimethyldiallylammonium chloride with a solid content of 21% and a viscosity of 3000cps, and stir for 10 minutes at a speed of 100 revolutions / min.

[0064] (4) After the conditioning is completed, enter the diaphragm plate and frame filter press for pressure filtration. The pressure of the press filter is 0.9-1.0MPa. After the filter press is completed, the mud cake does not stick...

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PUM

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Abstract

The invention relates to a composite sludge deep dehydration conditioner as well as an application and an application method thereof, which belong to the technical field of resource environment and sludge treatment. The conditioner is prepared from the following raw materials in percentage by mass: 1 to 2 percent of a strong oxidant, 19 to 40 percent of an inert substance and 59 to 80 percent of strong cationic polyelectrolyte. The compound sludge deep dehydration conditioner designed by the invention has the advantages of high conditioning speed, high sludge dehydration rate, small sludge increment, simplicity in operation, high sludge volume reduction rate and the like, so that the compound sludge deep dehydration conditioner can be widely applied to conditioning and enhanced deep dehydration of sludge.

Description

Technical field [0001] The invention belongs to the technical field of resource environment and sludge disposal, and specifically relates to a composite sludge deep dehydration conditioner and its application and application method. Background technique [0002] Sludge is a viscous substance produced in the process of sewage treatment. It is mainly composed of aerobic and anaerobic microorganisms. At the same time, it is also mixed with silt, fiber, animal and plant residues and adsorbed on it. A variety of complex mixtures of organic matter, metal, germs, insect eggs, and glue. The sludge discharged from the sewage treatment plant is generally a loose, peptized paste with a water content of 95% to 99%, with a light specific gravity (≤1g / cm 3 ), bulky (tens of times the volume of the contained solids), strong thixotropy (not easy to dehydrate), and has the physical and chemical characteristics of being very easy to putrefaction and odor, so it is very unfavorable for handling and...

Claims

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Application Information

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IPC IPC(8): C02F11/143C02F11/147C02F11/06
CPCC02F11/143C02F11/147C02F11/06C02F2303/04C02F2303/02C02F2305/023C02F2305/02
Inventor 张永顺黄现统汤爱华韦芳种芬芬曹洪涛陈落远李艳艳杨帆潘迪付娟娟潘婵
Owner 山东益源环保科技有限公司
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