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Organic-inorganic composite sludge dewatering conditioner

An inorganic composite and sludge dewatering technology, which is applied in water/sludge/sewage treatment, sludge treatment, biological sludge treatment, etc. It can solve the problem of affecting the dehydration effect, the internal skeleton and pores are easily collapsed, and the dehydration effect is not good. problem, to achieve the effect of consolidating the dehydration effect, facilitating the discharge of water, and improving the dehydration conditioning effect.

Active Publication Date: 2019-07-23
海环绿源环保科技(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention is: the dehydration effect of the traditional organic-inorganic composite sludge dewatering conditioner is not good, and the internal skeleton and pores are easy to collapse during the compression process, which affects the dehydration effect, and an organic-inorganic composite sludge is provided. dehydrating conditioner

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0033] Add sepiolite and dilute hydrochloric acid with a mass fraction of 8% into the hydrothermal kettle at a mass ratio of 1:10, then seal the hydrothermal kettle, and react with constant temperature stirring for 6 hours at a temperature of 155°C and a rotational speed of 600r / min. After that, the material was discharged and filtered to obtain No. 1 filter cake, and the obtained No. 1 filter cake was washed 5 times with deionized water, and then the washed No. 1 filter cake was dried to a constant weight at a temperature of 95 ° C to obtain Dry the No. 1 filter cake, then transfer the dried No. 1 filter cake into a tube furnace, and bake at a temperature of 240°C for 3 hours at a low temperature, then cool to room temperature with the furnace, and discharge to obtain acid-modified sepiolite; In parts by weight, successively take 30 parts of graphene oxide, 8 parts of sodium azide, and 120 parts of water, mix them and pour them into a three-necked flask, and move the three-nec...

example 2

[0035] In parts by weight, successively take 30 parts of graphene oxide, 8 parts of sodium azide, and 120 parts of water, mix them and pour them into a three-necked flask, and move the three-necked flask to a digital speed measuring constant temperature magnetic stirrer. ℃, the rotation speed is 500r / min, after stirring and reacting at constant temperature for 4 hours, filter to obtain No. 2 filter cake, and wash the obtained No. Dry to constant weight at 105°C to obtain the dry No. 2 filter cake, then pour the dry No. 2 filter cake, lithium aluminum hydride and tetrahydrofuran into the reactor at a mass ratio of 5:1:20, heat and stir for 3 hours , to recover the solvent by distillation under reduced pressure to obtain aminated modified graphene oxide; mix (N-amidino) dodecyl acrylamide and methoxypolyethylene glycol at a mass ratio of 2:1, and add methoxy p-dichlorobenzene with 0.2 times the quality of polyethylene glycol and ferrocene with 0.10 times the quality of methoxypo...

example 3

[0037] In parts by weight, successively take 30 parts of graphene oxide, 8 parts of sodium azide, and 120 parts of water, mix them and pour them into a three-necked flask, and move the three-necked flask to a digital speed measuring constant temperature magnetic stirrer. ℃, the rotation speed is 500r / min, after stirring and reacting at constant temperature for 4 hours, filter to obtain No. 2 filter cake, and wash the obtained No. Dry to constant weight at 105°C to obtain the dry No. 2 filter cake, then pour the dry No. 2 filter cake, lithium aluminum hydride and tetrahydrofuran into the reactor at a mass ratio of 5:1:20, heat and stir for 3 hours , to recover the solvent by distillation under reduced pressure to obtain aminated modified graphene oxide; mix (N-amidino) dodecyl acrylamide and methoxypolyethylene glycol at a mass ratio of 2:1, and add methoxy p-dichlorobenzene with 0.2 times the quality of polyethylene glycol and ferrocene with 0.10 times the quality of methoxypo...

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Abstract

The invention discloses an organic-inorganic composite sludge dewatering conditioner and belongs to the technical field of environmental protection materials. The studied composite sludge dewatering conditioner is prepared from acid modified sepiolite, amination modified graphene oxide, urease, urea, self-made segmented copolymers, N'-hexadecyl-N,N-dimethylethyl amidine, a carbonate foaming agentand a dispersant. In the preparation process, all components are weighed according to raw material composition; the acid modified sepiolite, amination modified graphene oxide, urea, the self-made segmented copolymers, N'-hexadecyl-N,N-dimethylethyl amidine and the dispersant are stirred and mixed to obtain a mixture; the mixture and water are stirred and mixed, inert gas is continuously introducedin the stirring process, vacuum freezing drying is performed, and a dried material is obtained; the dried material, urease and the carbonate foaming agent are stirred and mixed, and the organic-inorganic composite sludge dewatering conditioner is obtained. The organic-inorganic composite sludge dewatering conditioner prepared with the technical scheme has the characteristic of excellent dewatering performance.

Description

technical field [0001] The invention discloses an organic-inorganic composite sludge dehydration conditioner, which belongs to the technical field of environmental protection materials. Background technique [0002] A sludge treatment method in which fluidized primary, concentrated or digested sludge is dehydrated and converted into semi-solid or solid sludge. After dehydration, the moisture content of the sludge can be reduced to 55% to 80%, depending on the nature of the sludge and sediment and the efficiency of the dewatering equipment. The further dehydration of sludge is called sludge drying, and the moisture content of dried sludge is less than 10%. Dehydration methods mainly include natural drying method, mechanical dehydration method and granulation method. Natural drying method and mechanical dehydration method are suitable for sewage sludge. The granulation method is suitable for coagulation and sedimentation of sludge. As a product of the sewage treatment proc...

Claims

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Application Information

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IPC IPC(8): C02F11/148C02F11/02
CPCC02F11/14
Inventor 陈卓异
Owner 海环绿源环保科技(上海)有限公司
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