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Papermaking sewage treating agent

A technology for papermaking sewage and treatment agent, which is applied in water/sewage treatment, adsorbed water/sewage treatment, water/sludge/sewage treatment, etc. problems, to achieve the effect of not easy to float, easy to separate, and improve the efficiency of sewage treatment

Inactive Publication Date: 2019-01-01
XUZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing papermaking sewage treatment methods generally require the addition of sewage treatment agents, but most of the existing sewage treatment agents are difficult to reuse, the cost is high, and the treatment effect is not good, and the discharge requirements cannot be met.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A paper-making sewage treatment agent, weighing 100 parts of starch and 20 parts of hydroxyethyl cellulose, adding 200 parts of acetic acid-sodium acetate buffer solution with pH=3.5, and adding 3 parts of amylase under the condition of constant temperature stirring at 50°C, and reacting After 20 hours, filter with suction and wash with distilled water, dry the obtained starch in an oven at 40-50°C, and pulverize to obtain hydroxyethyl cellulose modified porous starch.

[0015] Hydroxyethyl cellulose modified porous starch and MnO2@COF nanomaterials were mixed at a ratio of 3:1 and mixed with water, dried and then calcined to obtain powder. Take 15 parts of calcined powder and mix with 15 parts of ethanol, 10 parts of acrylamide, 5 1 part of sodium lauryl sulfate, 5 parts of polyferric sulfate, mixed evenly, dried in a drying oven at 160 ° C for 12 hours, crushed and ground to about 200 mesh, that is, powder flocculant.

[0016] The preparation method of MnO2@COF nanoma...

Embodiment 2

[0020] The difference from Example 1 is that the ratio of hydroxyethyl cellulose modified porous starch to MnO2@COF nanomaterials is 1:1.

Embodiment 3

[0022] The difference from Example 1 is that the ratio of hydroxyethyl cellulose modified porous starch to MnO2@COF nanomaterials is 5:1.

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PUM

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Abstract

The invention discloses a papermaking sewage treating agent. The papermaking sewage treating agent is prepared by the following steps: adding acetic acid-sodium acetate buffer solution to starch and hydroxyethyl cellulose, in a condition of stirring in a constant temperature, adding amylase, suction-filtering and washing by distilled water, drying, smashing, to obtain hydroxyethyl cellulose modified porous starch, enabling the hydroxyethyl cellulose modified porous starch to be mixed with a MnO2@COF nano material, after drying, calcining to prepare powder, uniformly mixing with ethyl alcohol,acrylamide, lauryl sodium sulfate and polyferric sulfate, and drying in 160 DEG C. The starch is mixed with the hydroxyethyl cellulose for performing enzymolysis, so a starch gap is improved, and thecrosslinking porous starch is embedded in the hydroxyethyl cellulose, so a whole expansion factor is greatly reinforced, and anion garbage and other pollutants in papermaking sewage are effectively adsorbed.

Description

technical field [0001] The invention relates to a sewage treatment agent, in particular to a papermaking sewage treatment agent, and belongs to the technical field of sewage treatment agents. Background technique [0002] At present, the shortage of fresh water resources and the aggravation of water pollution are one of the five major environmental problems in the world, and sewage treatment has always been an important research topic in various countries. In various industries in our country, in the production process of the paper industry, a large number of chemical agents such as sodium hydroxide, sodium silicate, etc. are used for deinking, bleaching and pulping of waste paper. The discharge of papermaking wastewater is causing environmental pollution. It is an important source of pollution, so it is necessary to treat papermaking wastewater to meet the standard before it can be discharged. The existing papermaking wastewater treatment methods generally require the addi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/56C02F1/28C02F103/28
CPCC02F1/285C02F1/56C02F2103/28
Inventor 舒文淼
Owner XUZHOU NORMAL UNIVERSITY