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Papermaking wastewater treatment agent

A papermaking wastewater and treatment agent technology, applied in the field of water treatment, can solve the problems that the treatment effect needs to be improved, the sediment cannot be comprehensively utilized, and the performance is unstable.

Inactive Publication Date: 2017-11-10
合肥隆延科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can remove 80% of COD in the upper layer of water, but the sediment cannot be comprehensively utilized
[0004] The existing papermaking wastewater treatment agents have the disadvantages of high treatment cost and unstable performance, and the treatment effect needs to be improved

Method used

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  • Papermaking wastewater treatment agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The specific preparation method of modified diatomite is:

[0028] 1) Mix diatomaceous earth, graphene oxide, iron powder and ferrous sulfate to form a uniform mixed powder. The mass ratio of diatomite: graphene oxide: iron powder: ferrous sulfate is 87:5. : 2:5;

[0029] 2) Add a 30% alcohol aqueous solution with a volume concentration of 30% to the mixed powder and stir to form a paste, adjust the pH to 8 with an ammonia solution;

[0030] 3) Dry the paste in step 2), grind it, and calcinate it at 560°C for 3 hours.

Embodiment 2

[0032] The specific preparation method of modified diatomite is:

[0033] 1) Mix diatomaceous earth, graphene oxide, iron powder and ferrous sulfate and grind them into a uniform mixed powder, where the mass ratio of diatomite: graphene oxide: iron powder: ferrous sulfate is 80:5 : 3:2;

[0034] 2) Add 10% alcohol aqueous solution with volume concentration to the mixed powder and stir to form a paste, adjust the pH value to 10 with ammonia solution;

[0035] 3) Dry the paste in step 2), grind it, and calcinate it at 600°C for 4 hours.

Embodiment 3

[0037] A papermaking wastewater treatment agent, calculated in parts by weight, including the following components:

[0038] 52 parts of polyaluminum sulfate, 2 parts of polyacrylamide, 16 parts of starch xanthate, 21 parts of modified diatomaceous earth of Example 1, 8 parts of chitosan, 4 parts of sepiolite powder, 6 parts of cellulose acetate and 2 parts of dithiocarbamate.

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Abstract

The invention provides a papermaking wastewater treatment agent comprising the following components in parts by weight: 40-60 parts of polyaluminum sulfate, 1-3 parts of polyacrylamide, 10-20 parts of starch xanthate, 15-30 parts of modified diatomite, 6-12 parts of chitosan, 2-5 parts of sepiolite powder, 4-8 parts of cellulose acetate and 1-3 parts of dithiocarbamate salt, wherein the modified diatomite is mainly prepared from diatomite, graphene oxide, iron powder and ferrous sulfate. The treatment agent is stable in performance, and can be used for effectively removing pollutants from papermaking wastewater.

Description

Technical field [0001] The invention belongs to the technical field of water treatment, and specifically relates to a papermaking wastewater treatment agent. Background technique [0002] Papermaking wastewater mainly comes from the two production processes of pulping and papermaking in the papermaking industry. Pulping is to separate the fibers from plant raw materials into a slurry, and then bleach; papermaking is to dilute the slurry, shape, and Press and dry to make paper. Both processes discharge a large amount of waste water, and the waste water produced by pulping is the most polluted. The wastewater discharged from pulp washing is dark brown, called black water. The concentration of pollutants in the black water is very high, the BOD is as high as 5-40g / L, and it contains a lot of fiber, inorganic salts and pigments. The wastewater discharged from the bleaching process also contains a large amount of acid and alkali substances. The waste water discharged from the paper...

Claims

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Application Information

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IPC IPC(8): C02F1/28C02F1/56C02F1/461C02F101/20C02F103/28
CPCC02F1/281C02F1/285C02F1/46104C02F1/56C02F2101/20C02F2103/28
Inventor 汪泽维黄浩郭伟
Owner 合肥隆延科技有限公司
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