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Sewage treating agent and preparation method thereof

A technology of sewage treatment agent and starch derivatives, which is used in biological water/sewage treatment, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc. It can solve the problem of long sewage treatment cycle and low sewage treatment efficiency. problem, to achieve the effect of strong capture and sedimentation promotion, low cost, and easy availability of raw materials

Inactive Publication Date: 2018-03-27
安徽仁维环保工程科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing sewage treatment agents cannot meet the sewage treatment requirements of the printing and dyeing textile industry, and mainly have the defects of low sewage treatment efficiency and long sewage treatment cycle

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The present invention proposes a sewage treatment agent, the raw materials of which include by weight: 20.2 parts of corn stalks, 4.6 parts of cassava residues, 8.1 parts of starch derivatives, 6.8 parts of polyacrylamide, 11.3 parts of polyferric sulfate, and 15.5 parts of diatomite .

[0025] Wherein, starch derivative adopts following method to prepare:

[0026] S1, hydrochloric acid, sodium hydroxide, chloroacetic acid, ethanol are added into water respectively, be prepared into the hydrochloric acid solution that mass fraction is 2.3%, the sodium hydroxide solution that mass fraction is 3.6%, the chloroacetic acid solution that mass fraction is 48% and Mass fraction is the ethanol solution of 22% for subsequent use;

[0027] S2. Add tapioca starch to the hydrochloric acid solution with a mass fraction of 2.3% prepared in S1. After stirring evenly, raise the temperature to 76°C at a rate of 11°C / min, stir for 36 minutes, and then increase the temperature at a rate ...

Embodiment 2

[0033] The present invention proposes a sewage treatment agent, the raw materials of which include by weight: 21.7 parts of corn stalks, 4.4 parts of cassava residues, 7.2 parts of starch derivatives, 7.4 parts of polyacrylamide, 10.6 parts of polyferric sulfate, and 16.1 parts of diatomite .

[0034] Wherein, starch derivative adopts following method to prepare:

[0035] S1, 3.5 kilograms of hydrochloric acid, 6.6 kilograms of sodium hydroxide, 16.3 kilograms of chloroacetic acid, and 8.2 kilograms of ethanol were added to 121.5 kilograms, 199.6 kilograms, 20.7 kilograms, and 22.2 kilograms of water respectively to prepare a hydrochloric acid solution and a mass fraction of 2.8%. For 3.2% sodium hydroxide solution, mass fraction is 44% chloroacetic acid solution and mass fraction is 27% ethanol solution for subsequent use;

[0036] S2. Add 64 kg of tapioca starch to the hydrochloric acid solution with a mass fraction of 2.8% prepared in S1. After stirring evenly, raise the t...

Embodiment 3

[0042] The present invention proposes a sewage treatment agent, the raw materials of which include by weight: 18.4 parts of corn stalks, 4.8 parts of cassava residues, 8.6 parts of starch derivatives, 6.2 parts of polyacrylamide, 11.7 parts of polyferric sulfate, and 16.9 parts of diatomite .

[0043] Wherein, starch derivative adopts following method to prepare:

[0044] S1, 3.1 kilograms of hydrochloric acid, 6.9 kilograms of sodium hydroxide, 16.8 kilograms of chloroacetic acid, and 8.7 kilograms of ethanol were added to 116.2 kilograms, 170 kilograms, 24.2 kilograms, and 27.6 kilograms of water respectively to prepare a hydrochloric acid solution and a mass fraction of 2.6%. Be 3.9% sodium hydroxide solution, mass fraction be the chloroacetic acid solution of 41% and the mass fraction be the ethanol solution of 24% for subsequent use;

[0045] S2. Add 73 kg of tapioca starch to the hydrochloric acid solution with a mass fraction of 2.6% prepared in S1. After stirring even...

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Abstract

The invention discloses a sewage treating agent and a preparation method thereof. The sewage treating agent comprises the following raw materials in parts by weight: 18-22 parts of corn straw, 4-5 parts of cassava dregs, 7-9 parts of a starch derivative, 6-8 parts of polyacrylamide, 10-12 parts of polyferric sulfate, and 14-17 parts of diatomite; the preparation method comprises the following steps: corn straw whose water content is 60-70% is crushed into segments of 1 centimetre, the corn straw, the cassava dregs, polyacrylamide, and polyferric sulfate are uniformly mixed and placed into an ensilage trough, compacting is carried out, a plastic film is covered, fermentation is carried out for 4-6 days at 20-30 DEG C, in order to obtain fermented straw; the fermented straw, the starch derivative, and diatomite are uniformly mixed, in order to obtain the sewage treating agent. The sewage treating agent can be used for effectively removing various pollutants in the sewage, and especiallyhas substantial effects for treatment of dye waste water.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a sewage treatment agent and a preparation method thereof. Background technique [0002] With the rapid development of my country's textile printing and dyeing industry, dye wastewater has become one of the most important sources of water pollution today. Its discharge is about one-tenth of the total discharge of industrial wastewater. These wastewaters come from the scouring, dyeing, printing, and finishing processes in the printing and dyeing process. The sewage mainly contains dirt, grease, and salt on the textile fibers, as well as various pulps, dyes, surfactants, and additives added during the processing. Agents, acids and bases, etc. Sewage is characterized by high concentration of organic matter, complex composition, deep and changeable color, large pH changes, and large changes in water quantity and quality. It is a difficult-to-treat industrial sewage. The existing se...

Claims

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Application Information

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IPC IPC(8): C02F3/34C02F1/56C02F103/30
CPCC02F3/347C02F1/56C02F3/348C02F2103/30
Inventor 周燕王建泉周洁
Owner 安徽仁维环保工程科技有限公司
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