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Flocculant for treating papermaking wastewater

A paper-making wastewater and flocculant technology, which is applied in processing wastewater treatment, flocculation/sedimentation water/sewage treatment, etc., can solve problems such as human hazards, and achieve the effects of fast settling speed, tight flocculation sediment, and wide pH range

Inactive Publication Date: 2014-03-26
山东华亚环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing flocculants all contain aluminum, which is extremely harmful to the human body

Method used

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  • Flocculant for treating papermaking wastewater
  • Flocculant for treating papermaking wastewater
  • Flocculant for treating papermaking wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A flocculant for treating papermaking wastewater consists of the following raw materials in parts by weight:

[0020] 21 parts of polyferric chloride sulfate

[0021] Starch-acrylamide graft polymer 18 parts

[0022] Tannin 8 parts

[0023] Bentonite 6 parts.

[0024] Using the flocculant described in Example 1 to treat papermaking wastewater, the treated wastewater has a total dissolved substance concentration of 20 mg / L, a total suspended solids of 1.5 mg / L, BOD has been reduced by 89.5%, COD has been reduced by 81.3%, and the pollutant removal rate was 89.9%.

Embodiment 2

[0026] The flocculant for treating papermaking wastewater consists of the following raw materials in parts by weight:

[0027]

[0028] Using the flocculant described in Example 2 to treat papermaking waste water, the total dissolved matter concentration of waste water after treatment is 18.2mg / L,

[0029] The total suspended matter was 1.3mg / L, BOD was reduced by 90.5%, COD was reduced by 81.3%, and the removal rate of pollutants was 89.9%.

Embodiment 3

[0031] The flocculant for treating papermaking wastewater consists of the following raw materials in parts by weight:

[0032]

[0033] Adopt the flocculant described in example 3 to process papermaking wastewater, the wastewater total dissolved matter concentration after treatment is 18.5mg / L, and total suspended matter is 1.2mg / L, and BOD has reduced by 91.4%, and COD has reduced by 83.4%, and pollutant removal rate 91.5%.

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Abstract

The invention belongs to the technical field of wastewater processing, and specifically relates to a flocculant for treating papermaking wastewater. The flocculant for treating papermaking wastewater is composed of the following raw materials: polymerized chlorinated ferric sulfate, starch-acrylamide grafted polymer, tannin, and bentonite, and has the advantages of good processing effect on papermaking wastewater, no containing of aluminum element, safety, and environment-friendliness.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a flocculant for treating papermaking wastewater. Background technique [0002] With the increasingly frequent economic activities of the people in our country, the pollution of water bodies caused by soil erosion, production and domestic sewage is becoming more and more serious. The pollution components include a variety of trace organic pollutants, heavy metal ion pollutants, and high concentrations of large Molecular natural organic matter, a single flocculant can no longer solve the problem, and with the enhancement of people's awareness of environmental protection, the requirements for flocculants are also getting higher and higher. The existing flocculants all contain aluminum element, which is extremely harmful to the human body. [0003] The paper industry uses wood, straw, reeds, rags, etc. as raw materials, and cellulose is separated by high-te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F103/28
Inventor 牟军平刘晓
Owner 山东华亚环保科技有限公司