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Method for treating active sludge generated by sewage treatment and extracting protein

A technology for activated sludge and treatment methods, which is applied in the fields of peptide preparation methods, dehydration/drying/concentrated sludge treatment, chemical instruments and methods, etc. Inexpensive, easy to extract effects

Inactive Publication Date: 2017-01-25
蒋寿悟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, biochemical sludge is used as a raw material for papermaking. Due to the lack of fibrous substances, other materials need to be added, and the process is complicated. As a general sewage treatment plant, it is not easy to promote

Method used

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Experimental program
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Effect test

Embodiment Construction

[0014] The present invention is described in further detail below in conjunction with specific embodiment: after the sewage of sewage treatment field is through biochemical treatment, produce a large amount of activated sludge, the activated sludge is naturally settled and concentrated, dehydrated, and the water content in the activated sludge is moderate, after For dehydrated activated sludge, if the water content is too low, add an appropriate amount of water to achieve good fluidity of the activated sludge. Put the activated sludge into a jacketed enamel or stainless steel container, heat it in a water bath, and control the temperature Within 15-90 degrees Celsius, stir at the same time and keep warm for 5-60 minutes, then adjust the pH value with a concentration of 5%-30% NaOH or 10%-20% HCl solution to control the pH value at 7- Between 12, citric acid, H 2 SO 4 or NaHCO 3 、Na 2 CO 3 , lime water, ammonia water and other solutions to adjust the PH value, the viscosity...

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Abstract

The invention discloses a method for treating active sludge generated by sewage treatment and extracting protein. The method comprises the following steps: dehydrating a large amount of active sludge which is generated after sewage biochemical treatment of a sewage treatment plant, adding the active sludge into an enamel or stainless steel container, stirring at the temperature of 15 to 90 DEG C, preserving heat for 5 to 60 minutes, adjusting the pH value by using acidic and alkaline solutions to enable the pH value to be between 7 and 12 and improve the sludge viscosity, stirring, preserving heat for 5 to 30 minutes, filtering the viscous liquid to obtain filtrate, namely a protein aqueous solution, and filter residues, namely cell debris, putting the collected filtrate into the enamel or stainless steel container, continuously stirring, detecting the pH value of the filtrate continuously, standing the mixed liquid when the pH value reaches 7 to 3 and then layering to obtain bottom precipitate, namely protein latex, discharging clear liquid, drying and preparing the protein. The filter residues are pressed into blocks which can replace wood or can be used for mixing with other feeds to serve as a livestock feed. The method is simple in process, low in expense and high in benefit, and has higher social and economic benefits when used for sludge treatment.

Description

technical field [0001] The present invention relates to the treatment of activated sludge produced in the sewage biochemical treatment process and the extraction of protein, in particular to a method for the treatment of activated sludge produced in sewage treatment and the extraction of protein. Background technique [0002] With the development of industry, more and more industrial sewage is discharged, and the problem of environmental pollution has been widely concerned, which has led to the rapid development of sewage biochemical treatment technology, which has largely restrained the speed of environmental pollution. During the biochemical treatment of sewage, the organic pollutants in the sewage are transformed into microbial cells, carbon dioxide and water through the metabolic reaction of microorganisms. Therefore, as a result of sewage treatment, a large amount of microorganisms is generated, that is, a large amount of activated sludge is generated. At present, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/12C07K1/30
Inventor 蒋寿悟
Owner 蒋寿悟