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Method for growing anaerobic granular sludge for protein wastewater treatment

A technology for anaerobic granular sludge and protein wastewater, which is applied in the food industry wastewater treatment, anaerobic digestion treatment and other directions, can solve the problem of large consumption of sludge particles, and achieve the effect of increasing the content of granular sludge.

Active Publication Date: 2017-01-04
LINYI YUWANG VEGETABLE PROTEIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] For this reason, the technical problem to be solved by the present invention is to provide a method for growing anaerobic granular sludge for protein wastewater treatment, to solve the problem of excessive consumption of sludge particles in the prior art

Method used

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  • Method for growing anaerobic granular sludge for protein wastewater treatment

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The growth method of the anaerobic granular sludge that is used for protein wastewater treatment described in the present embodiment, comprises the steps:

[0030] (1) Collect the wastewater of the soybean protein production process, add it to the adjustment tank for homogenization and equalization treatment, the bottom of the adjustment tank is provided with perforations, and perform aeration during the homogenization and equalization process;

[0031] (2) Transport the treated waste water to the primary air flotation tank, and add PAC and 0.02 wt% PAM accounting for 0.3wt% of the waste water to remove pollutants such as SS in the waste water by air flotation; The scum enters the scum tank and is dried through the scum dehydration system;

[0032] (3) Transport the waste water after the above-mentioned air flotation to the secondary air flotation tank, add PAC and 0.02 wt% PAM accounting for 0.1wt% of the waste water, further remove pollutants such as SS in the waste w...

Embodiment 2

[0038] The growth method of the anaerobic granular sludge that is used for protein wastewater treatment described in the present embodiment, comprises the steps:

[0039] (1) Collect the wastewater of the soybean protein production process, add it to the adjustment tank for homogenization and equalization treatment, the bottom of the adjustment tank is provided with perforations, and perform aeration during the homogenization and equalization process;

[0040] (2) Transport the treated waste water to the primary air flotation tank, and add PAC and 0.01 wt% PAM accounting for 0.4wt% of the waste water to remove pollutants such as SS in the waste water by air flotation; The scum enters the scum tank and is dried through the scum dehydration system;

[0041] (3) Transport the waste water after the above-mentioned air flotation to the secondary air flotation tank, add PAC and 0.005 wt% PAM accounting for 0.3wt% of the waste water, further remove pollutants such as SS in the waste ...

Embodiment 3

[0047] The growth method of the anaerobic granular sludge that is used for protein wastewater treatment described in the present embodiment, comprises the steps:

[0048](1) Collect the wastewater of the soybean protein production process, add it to the adjustment tank for homogenization and equalization treatment, the bottom of the adjustment tank is provided with perforations, and perform aeration during the homogenization and equalization process;

[0049] (2) Transport the treated wastewater to the primary air flotation tank, and add PAC and 0.015wt% PAM accounting for 0.35wt% of the wastewater, and remove pollutants such as SS in the wastewater by air flotation; The scum enters the scum tank and is dried through the scum dehydration system;

[0050] (3) Transport the waste water after the above-mentioned air flotation to the secondary air flotation tank, add PAC and 0.01 wt% PAM accounting for 0.2wt% of the waste water, further remove pollutants such as SS in the waste wa...

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Abstract

The invention belongs to the technical field of wastewater treatment, and specifically relates to a method for growing anaerobic granular sludge for protein wastewater treatment. According to the method for growing anaerobic granular sludge for protein wastewater treatment, provided by the invention, the problems of dissolution of protein and retention of organic silicon are solved by the way of adding PAC and PAM gradually through a pretreatment stage of secondary air-floatation treatment before the step of anaerobic fermentation, and the organic silicon from which the protein is dissolved out is prevented from entering an anaerobic system and thus prevented from influencing the effect of the granular sludge. The content of the granular sludge in the protein wastewater is greatly increased after the protein wastewater is treated.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a method for growing anaerobic granular sludge used for protein wastewater treatment. Background technique [0002] With the improvement of people's living standards, great changes have taken place in people's dietary structure, the intake of protein per capita is increasing day by day, and because animal protein contains cholesterol, long-term consumption can easily induce diseases such as cardiovascular and cerebrovascular diseases, obesity, etc. The intake of vegetable protein is more important. [0003] Among the many vegetable proteins, soy protein (also known as soybean protein) has the highest nutritional value. Soybean protein powder is obtained from low-temperature defatted soybean meal through extraction, separation, enzymatic hydrolysis, spray drying and other steps. Enzymatic hydrolysis can decompose large molecular protein molecular chains i...

Claims

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Application Information

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IPC IPC(8): C02F3/28C02F103/32
CPCC02F3/28C02F2103/32
Inventor 刘汝萃王彩华石真勇马军邢燕芬
Owner LINYI YUWANG VEGETABLE PROTEIN
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