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Method for domestication of salt-resistant activated sludge

An activated sludge and salt-resistant technology, applied in sludge treatment, biological sludge treatment, etc., can solve the problems of high cost, long time, high uncertainty, etc., and achieve shortened time, improved sedimentation performance, and effluent quality. Good results

Active Publication Date: 2014-07-09
XINJIANG ENVIRONMENTAL ENG TECH
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  • Abstract
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Problems solved by technology

This makes the domestication process have disadvantages such as high cost, long time-consuming, high uncertainty, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] (1) Take the activated sludge from the waterworks, add 200ppm PAM (cationic polyacrylamide 853) to the activated sludge for dehydration treatment, so that the final water content of the activated sludge is 85%.

[0026] (2) Take the salt lake soil, crush and sieve it to 100 mesh, add water for aeration, add 100g of glucose, 15g of urea, 2g of potassium dihydrogen phosphate and 0.5g of inorganic element nutrient solution per cubic meter of water, so that C:N= 25:1, adjust the salt concentration of the system to 2%-3%, aerate for 3 hours, let it stand for 1 hour, repeat the above operation 8 times, and reserve it after 30 hours; if collecting high-salt water samples, dilute to a salinity of 2.5%, per cubic meter Add 120g of glucose, 17g of urea, 4g of potassium dihydrogen phosphate and 0.5g of inorganic element nutrient solution into the rice water, aerate for 2.5h, let stand for 1.3h, repeat the above operation 8 times, and reserve after 29h;

[0027] (3) Activated sludg...

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Abstract

The invention provides a method for domestication of salt-resistant activated sludge. The method comprises that substances (such as soil or water) in a high-salt environment are directly added into activated sludge having a normal salt concentration according to a certain ratio and then salt concentration loading is gradually increased, and in the above process, the microflora in the high-salt environment and the microflora in the activated sludge carry out bidirectional coevolution so that novel microflora is formed. The method is free of a complex bacterium screening process, has simple and easy processes, utilizes a novel salinity gradient-increasing scheme, prevents a biomass loss caused by overquick increasing of salinity pressure and realizes fast and efficient domestication of high-salt sludge.

Description

technical field [0001] The invention relates to the domestication of activated sludge in a high-salt environment. The method increases the diversity of microbial community structure, promotes the metabolism and reproduction of functional microorganisms, and improves the structure of bacterial micelles, thereby improving the oxidative decomposition ability of activated sludge to pollutants. . Background technique [0002] Activated sludge process for wastewater treatment is one of the most widely used methods. This method uses carbon, nitrogen, phosphorus and some refractory substances in wastewater as nutrients, and reduces COD, TN, TP and refractory toxic substances in sewage through the growth, reproduction and metabolism of a large number of microorganisms, protozoa and algae in activated sludge. substance content. At present, the activated sludge method has achieved good application results. However, for some wastewater that is difficult to treat biologically, there a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/02
CPCY02W10/20
Inventor 胡蓉曾凡付潘洪涛
Owner XINJIANG ENVIRONMENTAL ENG TECH
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