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Method for processing sludge

A sludge and mud cake technology is applied in the field of joint treatment of sludge with modified aluminum ash and acetic acid, which can solve the problems of poor economy, complicated operation, and high energy consumption, and achieve good economy, simple production process, and energy efficiency. costly effect

Inactive Publication Date: 2018-09-28
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the continuous optimization of water removal and heavy metal removal and stabilization process in sludge, there are various ways to treat heavy metals in sludge, and the treatment effect is gradually improved. However, looking at the above processes, there are complex operations and high material consumption. Disadvantages of high energy consumption and poor economy

Method used

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  • Method for processing sludge
  • Method for processing sludge

Examples

Experimental program
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Effect test

Embodiment 1

[0022]Embodiment 1: the method for this processing sludge, concrete operation is as follows:

[0023] (1) Weigh 0.1g of cetyltrimethylammonium bromide (relative molecular weight 364.45) and 0.1g of octadecyldimethylbenzyl ammonium chloride (relative molecular weight 424.15), add 100mL of deionized water, mix After homogenization, place the mixed solution in a shaker for 2 hours at normal temperature. After the reaction is completed, a homogeneous mixed solution of the two is obtained, which is stored in a brown reagent bottle for later use. Cetyltrimethylammonium bromide and octadecyl ammonium The total molar concentration of alkyl dimethyl benzyl ammonium chloride in the homogenate is 5mmol / L;

[0024] (2) Add 100mL homogeneous solution with a concentration of 5mmol / L to 10g of industrial aluminum ash, react in a mixing and stirring reactor at 20°C for 3h, filter and wash the solid-liquid mixture with distilled water at 0.025MPa, repeat 3 times , the solid is placed in a des...

Embodiment 2

[0032] Embodiment 2: the method for this processing sludge, concrete operations are as follows:

[0033] (1) Weigh cetyl trimethyl ammonium bromide and octadecyl dimethyl benzyl ammonium chloride, add deionized water, mix well and place the mixture in a shaker at room temperature Shake for 3 hours to obtain a homogeneous mixture, which is stored in a brown reagent bottle for later use, wherein the total molar concentration of cetyltrimethylammonium bromide and octadecyldimethylbenzyl ammonium chloride in the homogeneous mixture is 10mmol / L, the mass ratio of cetyl trimethyl ammonium bromide and octadecyl dimethyl benzyl ammonium chloride is 4:1;

[0034] (2) Add 300mL of a homogenized solution with a concentration of 10mmol / L to 10g of industrial aluminum ash, react in a mixing and stirring reactor at 30°C for 3h, filter and wash the solid-liquid mixture with distilled water at 0.04MPa, repeat 3 times The second time, the solid is placed in a desiccator and dried at 110°C fo...

Embodiment 3

[0042] Embodiment 3: the method for this processing sludge, concrete operations are as follows:

[0043] (1) Weigh cetyl trimethyl ammonium bromide and octadecyl dimethyl benzyl ammonium chloride, add deionized water, mix well and place the mixture in a shaker at room temperature Shake for 3 hours to obtain a homogeneous mixture, which is stored in a brown reagent bottle for later use, wherein the total molar concentration of cetyltrimethylammonium bromide and octadecyldimethylbenzyl ammonium chloride in the homogeneous mixture is 20mmol / L, the mass ratio of cetyl trimethyl ammonium bromide and octadecyl dimethyl benzyl ammonium chloride is 3:1;

[0044] (2) Add 500mL of a homogenized solution with a concentration of 20mmol / L to 10g of industrial aluminum ash, react in a mixing and stirring reactor at 25°C for 6h, filter and wash the solid-liquid mixture with distilled water at 0.04MPa, repeat 2 Second, the solid is placed in a desiccator and dried at 100°C for 3 hours to ob...

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Abstract

The invention discloses a method for processing sludge. The method uses a combination of aluminum ash processed by a uniformly-mixed liquid of cetyl trimethyl ammonium bromide and octadecyl dimethyl benzyl ammonium chloride and acetic acid to process the sludge. According to the method disclosed by the invention, the sludge processed by the acetic acid and the modified aluminum ash has a greatly-improved dehydration rate, and the moisture content of the dehydrated sludge can be reduced to 45% or less; the production process is simple to operate, the production costs are low, the waste resourcealuminum ash is fully utilized for sludge treatment, so that the method reflects the environmentally-friendly concept of processing waste by waste; the content of heavy metals in the sludge is reduced while the dehydration effect of the sludge is improved; and at the same time, the process promotes recycling of waste resources, and has broad application prospects and good market prospects.

Description

technical field [0001] The invention belongs to the technical field of sludge reduction and stabilization production technology, and also belongs to the field of resource utilization of aluminum ash, and specifically relates to a method for jointly treating sludge by using modified aluminum ash and acetic acid. Background technique [0002] Aluminum ash is a kind of industrial waste residue with large output and serious pollution. It mainly comes from aluminum smelting enterprises such as electrolytic aluminum factories, aluminum profile factories, and foundry aluminum alloy factories. According to statistics, for every 1000 tons of aluminum produced, about 25 tons of aluminum ash will be produced. The massive accumulation of aluminum ash not only causes waste of resources, but also pollutes the environment. The main component of aluminum ash is SiO 2 and Al 2 o 3 , where SiO 2 The content of Al is generally 5% to 20%, Al 2 o 3 The content is generally 43% to 75%. At...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/14C02F11/12
CPCC02F11/121C02F11/14
Inventor 马丽萍戴取秀任南琪宁平瞿广飞郭致蓥
Owner KUNMING UNIV OF SCI & TECH
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