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Efficient coagulant dedicated for paper-making wastewater, and preparation method thereof

A technology of papermaking wastewater and coagulant, which is applied in the direction of processing wastewater treatment, flocculation/sedimentation water/sewage treatment, etc., can solve the problems of difficult papermaking wastewater treatment and unsatisfactory results, and achieves the convenience of large-scale promotion and application. Effects of eutrophication and water quality improvement

Inactive Publication Date: 2017-05-31
余姚怡丰生态农业发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The treatment of papermaking wastewater is relatively difficult. In the prior art, various methods such as physical and chemical methods are used to treat sewage, but the results are not ideal.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A special high-efficiency coagulant for papermaking wastewater, consisting of the following raw materials in parts by weight: 3 parts of sodium acetate, 5 parts of magnesium sulfate, 15 parts of polyethyleneimine, 5 parts of organic base, 18 parts of polyaluminum ferric sulfate, corn 26 parts of starch, 14 parts of activated carbon, 20 parts of diatomaceous earth, 12 parts of vermiculite, 2 parts of sodium gluconate, 4 parts of sodium hexametaphosphate, 1 part of ferric nitrate, 4 parts of sulfamic acid, wherein the organic base is ethanolamine.

[0024] In the present embodiment, the preparation method of the special high-efficiency coagulant for papermaking wastewater, the steps are as follows:

[0025] 1) Weigh activated carbon and diatomaceous earth, add them to a pulverizer, and after pulverization, pass through a 100-mesh sieve to obtain the first mixed powder;

[0026] 2) Weigh the vermiculite, add it to the pulverizer, and after pulverizing, pass through a 200-...

Embodiment 2

[0033] A special high-efficiency coagulant for papermaking wastewater, consisting of the following raw materials in parts by weight: 4 parts of sodium acetate, 6 parts of magnesium sulfate, 16 parts of polyethyleneimine, 7 parts of organic base, 21 parts of polyaluminum ferric sulfate, corn 29 parts of starch, 15 parts of activated carbon, 21 parts of diatomaceous earth, 13 parts of vermiculite, 4 parts of sodium gluconate, 6 parts of sodium hexametaphosphate, 2.7 parts of ferric nitrate, 5 parts of sulfamic acid, wherein the organic base is ethanolamine.

[0034] In the present embodiment, the preparation method of the special high-efficiency coagulant for papermaking wastewater, the steps are as follows:

[0035] 1) Weigh activated carbon and diatomaceous earth, add them to a pulverizer, and after pulverization, pass through a 100-mesh sieve to obtain the first mixed powder;

[0036] 2) Weigh the vermiculite, add it to the pulverizer, and after pulverizing, pass through a 2...

Embodiment 3

[0043] A special high-efficiency coagulant for papermaking wastewater, consisting of the following raw materials in parts by weight: 5 parts of sodium acetate, 6 parts of magnesium sulfate, 18 parts of polyethyleneimine, 7 parts of organic base, 20 parts of polyaluminum ferric sulfate, corn 28 parts of starch, 15 parts of activated carbon, 23 parts of diatomaceous earth, 14 parts of vermiculite, 3 parts of sodium gluconate, 6 parts of sodium hexametaphosphate, 1.8 parts of ferric nitrate, 6 parts of sulfamic acid, wherein the organic base is ethanolamine.

[0044] In the present embodiment, the preparation method of the special high-efficiency coagulant for papermaking wastewater, the steps are as follows:

[0045] 1) Weighing activated carbon and diatomaceous earth, adding them to a pulverizer, and passing through a 150-mesh sieve after pulverization to obtain the first mixed powder;

[0046] 2) Weigh the vermiculite, add it to the pulverizer, and after pulverizing, pass thr...

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Abstract

The invention discloses an efficient coagulant dedicated for paper-making wastewater. The efficient coagulant comprises the following raw materials in parts by weight: 3-6 parts of sodium acetate, 5-8 parts of magnesium sulfate, 15-20 parts of polyethyleneimine, 5-8 parts of organic alkali, 18-22 parts of polymeric aluminum ferric sulfate, 26-30 parts of corn starch, 14-17 parts of activated carbon, 20-25 parts of kieselguhr, 12-15 parts of vermiculite, 2-5 parts of sodium gluconate, 4-7 parts of sodium hexametaphosphate, 1-3 parts of ferric nitrate and 4-8 parts of sulfamic acid. The invention also discloses a preparation method for the efficient coagulant dedicated for the paper-making wastewater. The coagulant prepared from the preparation method has a good processing effect on the paper-making wastewater, and the water quality of the processed paper-making wastewater is obviously improved so as to achieve an emission standard stipulated by the environmental protection agency.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a special high-efficiency coagulant for papermaking wastewater and a preparation method thereof. Background technique [0002] Water is an important natural resource for the survival and development of human society. With the rapid development of industry, water pollution is constantly escalating, and the wastewater produced by papermaking is an important source of water pollution. [0003] Papermaking wastewater mainly comes from the two production processes of pulping and papermaking in the papermaking industry. Pulping is to separate the fibers in the plant raw materials, make pulp, and then bleach it. This process will generate a lot of papermaking wastewater; papermaking is to dilute, shape, squeeze, and dry the pulp to make paper. The process is also prone to papermaking wastewater. Papermaking wastewater produced by pulping is the most polluted. The wastewater ...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F103/28
CPCC02F1/52C02F2103/28
Inventor 应璐超
Owner 余姚怡丰生态农业发展有限公司
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