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Straw/polyferric sulfate composite water treatment material and preparation method thereof

A technology for polymerizing ferric sulfate and water treatment. It is used in water/sewage treatment, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc. It can solve problems such as increased iron ion content and yellowing of water color. , to achieve the effect of reducing crystallinity, improving negative effects, and good adsorption and flocculation ability

Active Publication Date: 2015-01-07
FUJIAN MELTS SPRINGS DTC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of treating the water body, the single polyferric sulfate flocculant will cause the color of the water body to turn yellow, and the content of iron ions in the aqueous solution will increase.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A straw / polyferric sulfate composite water treatment material, the preparation of which comprises the following steps:

[0021] 1) At room temperature, after the rice straw was washed with water to remove soil, dried and pulverized, 5.0 g was added to 250 ml of sodium hydroxide solution with a mass volume concentration of 10%, stirred quickly and evenly, and then stirred slowly for 24 hours to obtain A light yellow straw solution with a mass volume concentration of 2%;

[0022] 2) centrifuging and filtering the straw solution obtained in step 1), and drying the obtained filter cake to obtain straw powder;

[0023] 3) Add the straw powder obtained in step 2) into 16.7ml of polyferric sulfate solution with a mass volume concentration of 30%, stir in a water bath at 40°C for 10 h, and precipitate flocs;

[0024] 4) After filtering the solution prepared in step 3), the obtained precipitate was washed with ethanol for 3 times, and dried to obtain the composite material.

...

Embodiment 2

[0027] A straw / polyferric sulfate composite water treatment material, the preparation of which comprises the following steps:

[0028] 1) At room temperature, after the rice straw was washed with water to remove soil, dried, and crushed, 5.0 g was added to 200 ml of sodium hydroxide solution with a mass volume concentration of 10%, and stirred quickly and evenly, and then stirred slowly for 24 hours to obtain A light yellow straw solution with a mass volume concentration of 2.5%;

[0029] 2) centrifuging and filtering the straw solution obtained in step 1), and drying the obtained filter cake to obtain straw powder;

[0030] 3) Add the straw powder obtained in step 2) into 12.5ml of polyferric sulfate solution with a mass volume concentration of 40%, stir in a water bath at 50°C for 10 hours, and precipitate flocs;

[0031] 4) After filtering the solution prepared in step 3), the obtained precipitate was washed with ethanol for 3 times, and dried to obtain the composite mater...

Embodiment 3

[0034] A straw / polyferric sulfate composite water treatment material, the preparation of which comprises the following steps:

[0035] 1) At room temperature, after the rice straw was washed with water to remove soil, dried, and crushed, 5.0 g was added to 100 ml of sodium hydroxide solution with a mass volume concentration of 10%, and stirred quickly and evenly, and then stirred slowly for 24 hours to obtain A light yellow straw solution with a mass volume concentration of 5%;

[0036] 2) centrifuging and filtering the straw solution obtained in step 1), and drying the obtained filter cake to obtain straw powder;

[0037] 3) Add the straw powder obtained in step 2) into 10ml of polyferric sulfate solution with a mass volume concentration of 50%, and stir in a water bath at 60°C for 10 hours to precipitate flocs;

[0038] 4) After filtering the solution prepared in step 3), the obtained precipitate was washed with ethanol for 3 times, and dried to obtain the composite materia...

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Abstract

The invention discloses a straw / polyferric sulfate composite water treatment material and a preparation method thereof. A composite material with a good water treatment effect is prepared by using straw and polyferric sulfate as raw materials through a liquid phase method. The raw materials of the composite water treatment material are low in price, the composite water treatment material can be prepared under the conditions of normal temperature and normal pressure, reaction conditions are mild, the process is simple, and the preparation process is easy to control; the prepared composite material can play the advantages of a ferric salt polymer in the water treatment process, the iron content of treated water is reduced, the flocculating performance is good, the composite material has high wastewater treatment capacity, the negative effects caused by the fact that ferric ions enter the environment can be improved to the greatest extent, the problems that the water treated by a ferric salt flocculating agent is commonly colored and contains high-concentration high-valence state iron are solved, the injury to the human health is effectively avoided, and the composite material is applicable to large-scale wastewater treatment.

Description

technical field [0001] The invention specifically relates to a straw / polyferric sulfate composite water treatment material and a preparation method thereof. Background technique [0002] Straw is a renewable resource in nature. Straw is rich in cellulose and lignin, and there are a large number of active groups such as hydroxyl groups distributed on its molecular chain. It can be used as a cheap organic polymer, and has good flocculation and complexation for pollutants in water. The role of adsorption. As a traditional flocculant, polyferric sulfate has good flocculation performance. In recent years, it has attracted widespread attention due to its promising application prospects in the flocculation and removal of pollutants. However, in the process of treating the water body, the single polyferric sulfate flocculant will cause the color of the water body to turn yellow and the content of iron ions in the aqueous solution to increase. [0003] Based on the excellent prop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52
CPCC02F1/286C02F1/5245C02F1/56C02F2101/30
Inventor 李世迁陈自灿
Owner FUJIAN MELTS SPRINGS DTC CO LTD
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