Microbial sludge dehydrating agent and preparation method thereof

A sludge dehydrating agent and microbial technology, which is applied in biological sludge treatment, water/sludge/sewage treatment, sludge treatment, etc., can solve the problems of increasing the cost of sludge dehydrating agent, easy inactivation of enzyme products, and microbial cultivation conditions Harsh and other problems, to achieve the effect of saving sludge dewatering cost and low material cost

Inactive Publication Date: 2022-04-29
南京瑞特莱生态环境有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the most commonly used sludge dewatering agent is cationic polyacrylamide (CPAM). Although CPAM has a good sludge dewatering effect, its shortcomings of being used as a sludge dewatering agent in large quantities are increasingly apparent. It is difficult to degrade, causing secondary pollution to the environment, and a large amount of organic solvents such as surfactants used in the CPAM synthesis process will also pollute the environment. Chinese patent No. CN201510987557.3 discloses a composite biological sludge dewatering agent The preparation method of the present invention uses bovine serum albumin, kanamycin, etc. as screening nutrients, screens out the target strain from the rema

Method used

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Examples

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preparation example Construction

[0021] The preparation method of microbial sludge dewatering agent comprises the following steps:

[0022] S1: Weigh the corresponding proportions of polyacrylate, tourmaline stone powder and wood cellulose and grind them into superfine powders, pass through a 1500-mesh sieve, and set aside for later use;

[0023] S2: Then add the corresponding proportion of polyacrylamide solution, sludge stripping agent solution, sludge wall breaking agent solution and sludge surface structure modifier solution into the reaction kettle, and stir at a temperature of 30-40°C 2-4 hours;

[0024] S3: Add the bacteria-secreted extracellular enzyme solution and the lysozyme solution dropwise into the reaction kettle in step S2, raise the temperature to 40-50 degrees, continue stirring for 1-2 hours, and then add acidophilic bacteria and Aspergillus tubingensis in corresponding proportions, Obtain a suspension containing acidophilic bacteria and Aspergillus tubingii;

[0025] S4: adding the polya...

Embodiment 1

[0027] 2 parts of acidophilic bacteria, 2 parts of Aspergillus tubingensis, 8 parts of extracellular enzyme solution secreted by bacteria, 8 parts of lysozyme solution, 5 parts of polyacrylate, 5 parts of wood cellulose, 1 part of tourmaline stone powder, polyacrylamide solution 15 parts, 10 parts of sludge stripping agent solution, 10 parts of sludge wall breaking agent solution and 10 parts of sludge surface structure modifier solution.

[0028] S1: Weigh the corresponding proportions of polyacrylate, tourmaline stone powder and wood cellulose and grind them into superfine powders, pass through a 1500-mesh sieve, and set aside for later use;

[0029] S2: Then add the corresponding proportion of polyacrylamide solution, sludge stripping agent solution, sludge wall breaking agent solution and sludge surface structure modifier solution into the reaction kettle, and stir at a temperature of 30-40°C 2-4 hours;

[0030] S3: Add the bacteria-secreted extracellular enzyme solution ...

Embodiment 2

[0033] 5 parts of acidophilic bacteria, 1 part of Aspergillus tubingensis, 5 parts of extracellular enzyme solution secreted by bacteria, 5 parts of lysozyme solution, 5 parts of polyacrylate, 10 parts of wood cellulose, 2 parts of tourmaline stone powder, polyacrylamide solution 10 parts, 10 parts of sludge stripping agent solution, 10 parts of sludge wall breaking agent solution and 10 parts of sludge surface structure modifier solution.

[0034] S1: Weigh the corresponding proportions of polyacrylate, tourmaline stone powder and wood cellulose and grind them into superfine powders, pass through a 1500-mesh sieve, and set aside for later use;

[0035] S2: Then add the corresponding proportion of polyacrylamide solution, sludge stripping agent solution, sludge wall breaking agent solution and sludge surface structure modifier solution into the reaction kettle, and stir at a temperature of 30-40°C 2-4 hours;

[0036] S3: Add the bacteria-secreted extracellular enzyme solution...

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Abstract

The invention discloses a microbial sludge dehydrating agent and a preparation method thereof. The sludge dehydrating agent comprises an acidophilic bacteria solution, an aspergillus tubingensis solution, a bacteria secreted extracellular enzyme solution, a lysozyme solution, polyacrylate, wood cellulose, tourmaline powder, a polyacrylamide solution, a sludge stripping agent solution, a sludge wall breaking agent solution and a sludge surface structure modifier solution. By adding the acidophilic bacteria solution, the aspergillus tubingensis solution, the bacterial secreted extracellular enzyme solution and the lysozyme solution, under the combined action of acidophilic bacteria, aspergillus tubingensis, bacterial secreted extracellular enzyme and lysozyme, the adsorption and wrapping effects of sludge extracellular polymeric substances on water can be thoroughly destroyed, so that the sludge is easier to dehydrate, and the water content is reduced. And the biological cell wall structure in the sludge can be destroyed, so that the sludge floc structure is thoroughly disintegrated, water in the sludge can be fully released, and the purpose of deep dehydration of the sludge is achieved.

Description

technical field [0001] The invention relates to a dehydrating agent, in particular to a microbial sludge dehydrating agent and a preparation method thereof, belonging to the technical field of dehydrating agents. Background technique [0002] A sludge treatment method that removes water from fluidized primary, concentrated or digested sludge and converts it 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. [0003] At...

Claims

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Application Information

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IPC IPC(8): C02F11/148C02F11/12C02F11/02
CPCC02F11/12C02F11/148C02F11/02
Inventor 刘玉安蔡泉生傅小强
Owner 南京瑞特莱生态环境有限公司
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