A kind of treatment method of starch processing wastewater

A starch processing and treatment method technology, which is applied in the field of starch processing wastewater treatment, can solve the problems such as difficulty in meeting wastewater discharge standards, difficulty in device operation and maintenance, and unreasonable microbial compatibility, so as to reduce sludge production and promote nitrification reaction. Nitrification effect and low operating cost

Active Publication Date: 2017-09-19
HULUNBEIER NORTHEAST FUFENG BIOTECHNOLOGIES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are two main reasons. One is that the current treatment technology and equipment have a large investment, occupy a large area, and the operation and maintenance of the device are difficult, and the cost is high, which is difficult for enterprises to bear; the second is the overall technical level of these treatment processes and devices. Not high, low treatment efficiency, high cost, and the treated wastewater is difficult to meet the discharge standards stipulated by the state; third, the microbial compatibility is unreasonable, the oxidation effect is poor, and the input cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A treatment method for starch processing wastewater, comprising the steps of:

[0022] Step 1) Preparation of biocarriers:

[0023] A) Weigh the following raw materials in parts by weight for later use, including 1 part of straw, 1 part of silica gel powder, 2 parts of chitin, 3 parts of kaolin, 5 parts of starch ether, 7 parts of polyacrylamide, 10 parts of polyvinyl alcohol, 25 parts of water; wherein, the particle size of the silica gel powder is 200 mesh; the stalk is corn stalk;

[0024] B) Pulverize the straw with a pulverizer, then add kaolin, mix evenly, and grind to 100 mesh mixed powder;

[0025] C) Add silica gel powder, chitin, starch ether, polyacrylamide, polyvinyl alcohol and water to the stirring reactor in sequence, stir at 500 rpm for 10 minutes, then add the mixed powder in step B), and stir at 500 rpm 3min, then let it stand for 12 hours, and finally place it at 60°C and dry it to a moisture content of 5% (parts by weight) to obtain the biological ...

Embodiment 2

[0031] A treatment method for starch processing wastewater, comprising the steps of:

[0032] Step 1) Preparation of biocarriers:

[0033] A) Weigh the following raw materials in parts by weight for later use, including 2 parts of straw, 2 parts of silica gel powder, 3 parts of chitin, 4 parts of kaolin, 6 parts of starch ether, 9 parts of polyacrylamide, 12 parts of polyvinyl alcohol, 30 parts of water; wherein, the particle size of the silica gel powder is 200 mesh; the straw is wheat straw;

[0034] B) Pulverize the straw with a pulverizer, then add kaolin, mix evenly, and grind to 100 mesh mixed powder;

[0035] C) Add silica gel powder, chitin, starch ether, polyacrylamide, polyvinyl alcohol and water to the stirring reactor in sequence, stir at 500 rpm for 10 minutes, then add the mixed powder in step B), and stir at 500 rpm 3min, then let it stand for 12 hours, and finally place it at 60°C and dry it to a moisture content of 5% (parts by weight) to obtain the biologic...

Embodiment 3

[0042] The effect test of processing method of the present invention:

[0043] Control group 1: use sawdust carrier; the type of microorganisms is the same as that of the test group; treatment method: after three days of continuous dosing, 5g / m3 per day, and then stand for six days, the detection and treatment results are shown in Table 1.

[0044] Control group 2: The carrier is the same as in Example 2, the difference is that only four kinds of bacteria are added, but no algae is added; treatment method: add 5g / cubic meter on the first day, and then let it stand for six days. See the test results in Table 1.

[0045] Test group: according to the process of Example 2 of the present invention.

[0046] Table 1

[0047] indicators

[0048] Conclusion: The treatment method of the present invention is simple and feasible, has good effect of removing pollutants, and is low in cost; the biological carrier prepared by the present invention has a large hollow network stru...

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PUM

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Abstract

The invention belongs to the technical field of environmental protection and discloses a treatment method for starch processing wastewater, comprising the following steps: step 1) preparing biological carrier, step 2) preparing biological agent, and step 3) treating wastewater. The treatment method of the invention is simple and feasible, can effectively remove COD, SS and ammonia nitrogen pollutants in waste water, and has low cost and is easily accepted by enterprises.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a treatment method for starch processing wastewater. Background technique [0002] Starch processing is a process of preparing corn, sorghum, wheat, potato, sweet potato and other crops into starch through processes such as soaking and grinding. The starch processing industry has the characteristics of high water consumption and strong pollution. According to the current technological level in my country, the water used to produce each ton of starch products is about 30-40M 3 , the waste water produced is 20~30M 3 , The COD of wastewater is very high, usually 1000-30000mg / L, SS is 500-1000mg / L, and the biological oxygen demand and chemical oxygen demand of wastewater are very high. Starch production enterprises discharge a large amount of high-concentration organic wastewater every year, and the wastewater treatment compliance rate of these starch p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/34C02F3/32C02F3/30C08L29/04C08L33/26C08L97/02C08L5/08C08L3/08C08K3/34
Inventor 宋海波严纪文郭永波杜学忠
Owner HULUNBEIER NORTHEAST FUFENG BIOTECHNOLOGIES CO LTD
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