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Process for treating sewage to generate active mud and extract protein

A technology of activated sludge and treatment method, which is applied in water/sludge/sewage treatment, sludge treatment, sludge treatment through temperature control, etc. Abundant, low-cost effects

Inactive Publication Date: 2002-09-18
邵胜学
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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 fiber 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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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

A process for extracting protein from the active mud generated by treating sewage includes dewatering said mud, stirring at 15-90 deg.C for 5-60 min, regulating pH value to 7-12, stirring at constanttemp for 5-30 min, filter to obtain aqueous solution of protein, stirring until the pH value of 3-7, laying aside, depositing, removing supernatant, and drying. Its filtered dregs can be used as fuelor feed.

Description

technical field [0001] The invention relates to the treatment of activated sludge produced in the biochemical treatment of sewage 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. The rapid development of sewage biochemical treatment technology has largely restrained the speed of environmental pollution. During the biochemical treatment of sewage, the organic pollutants in the sewage are converted into microbial cells, carbon dioxide and water through the metabolic reaction of microorganisms. Therefore, as a result of sewage treatment, a large number of microorganisms are produced, that is, a large amount of activated sludge is produced. At present, the activated sludge is usually dehydrated a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/00C02F11/12C02F11/14C02F11/18
Inventor 邵胜学
Owner 邵胜学
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