Method for treating acidic fluorine-containing waste water

A waste water and acidic technology, which is applied in the treatment of acidic fluorine-containing waste water and the application of biological polymer materials to the field of fluorine-containing waste water, can solve the problems of not being able to capture fluorine negative ions, failing to achieve the effect, and difficulty in dehydration, so as to provide treatment efficiency , solve the effect of refractory treatment and reduce secondary pollution

A waste water and acidic technology, which is applied in the treatment of acidic fluorine-containing waste water and the application of biological polymer materials to the field of fluorine-containing waste water, can solve the problems of not being able to capture fluorine negative ions, failing to achieve the effect, and difficulty in dehydration, so as to provide treatment efficiency , solve the effect of refractory treatment and reduce secondary pollution

CN101823799AActive Publication Date: 2010-09-08江西爱地生生物高分子材料有限公司
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  • Method for treating acidic fluorine-containing waste water
  • Method for treating acidic fluorine-containing waste water
  • Method for treating acidic fluorine-containing waste water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Example 1 Treatment of high-concentration fluorine-containing industrial wastewater

[0055] The fluorine-containing industrial wastewater is from Yunnan Furui Chemical Co., Ltd., the fluorine content is about 12356mg / L, the pH value is about 1.0, the turbidity is about 826, and the treatment capacity is 1L / time;

[0056] Lime milk product is industrial grade lime powder, its main components are calcium oxide and calcium hydroxide, the concentration of lime milk is 20%; calcium carbonate product is industrial grade limestone powder, its purity is about 90%; biological capture agent polymer water soluble The non-toxic γ-polyglutamic acid product is produced by microbial fermentation, developed by Kunshan Industrial Technology Research Institute Huake Biopolymer Materials Research Institute Co., Ltd. The weight percentage of γ-polyglutamic acid in the mixture produced by fermentation is about 6%, γ -The average molecular weight of polyglutamic acid is about 800,000 to 1,3...

Embodiment 2

[0059] Example 2 Treatment of medium-concentration fluorine-containing industrial wastewater

[0060] The fluorine-containing industrial wastewater comes from Guangdong Zhanhua Co., Ltd., with a fluorine content of about 7082mg / L, a pH value of about 1.0, a turbidity of about 980, and a treatment capacity of 1L / time;

[0061] Lime milk product is industrial grade lime powder, its main components are calcium oxide and calcium hydroxide, the concentration of lime milk is 20%; calcium carbonate product is industrial grade limestone powder, its purity is about 90%; biological capture agent polymer water soluble The non-toxic γ-polyglutamic acid product is produced by microbial fermentation, and is produced and sold by Kunshan Huake Biopolymer Materials Research Institute Co., Ltd. The weight percentage of γ-polyglutamic acid in the mixture produced by fermentation is about 6%. The average molecular weight of polyglutamic acid is about 800,000 to 1,300,000.

[0062] Add calcium ca...

Embodiment 3

[0064] Example 3 Treatment of low-concentration fluorine-containing industrial wastewater

[0065] The fluorine-containing industrial wastewater comes from Guangdong Zhanhua Co., Ltd., with a fluorine content of about 382mg / L, a pH value of about 1.0, a turbidity of about 51, and a treatment capacity of 1L / time;

[0066] Lime milk product is industrial grade lime powder, its main components are calcium oxide and calcium hydroxide, the concentration of lime milk is 20%; calcium carbonate product is industrial grade limestone powder, its purity is about 90%; biological capture agent polymer water soluble The non-toxic γ-polyglutamic acid product is produced by microbial fermentation, and is produced and sold by Kunshan Huake Biopolymer Materials Research Institute Co., Ltd. The weight percentage of γ-polyglutamic acid in the mixture produced by fermentation is about 6%. The average molecular weight of polyglutamic acid is about 800,000 to 1,300,000.

[0067] Add milk of lime (a...

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Abstract

The invention relates to a method for treating acidic fluorine-containing waste water. The method comprises the following steps sequentially: (1) adding calcium-containing substance into the fluorine-containing waste water to be treated and adjusting the pH value of the waste water to be about 4.0 to 9.0; and (2) adding water-soluble gamma-polyglutamic acid serving as a biologic capturing agent into the mixture, fully stirring and standing the mixture, separating the supernatant and collecting the precipitated sludge after the mixture is precipitated and demixed, wherein the calcium-containing substance at least comprises one of calcium hydroxide, calcium oxide or calcium salt. The method overcomes the technical disadvantages in the prior art; the high molecular water-soluble gamma-polyglutamic acid with a molecular weight between 500,000 and 1,500,000 is used in the treatment of the acidic fluorine-containing waste water; and repeated experiments show that the fluorine removing effect is excellent and the treated waste water can meet the national first-class discharge standard; moreover, the method has the advantages of low treatment cost, high efficiency for the treatment process, environment friendliness and no secondary pollution.

Description

technical field [0001] The invention mainly relates to a method for treating acidic fluorine-containing wastewater, in particular to a method for applying biopolymer materials to treat fluorine-containing wastewater, and belongs to the field of industrial wastewater treatment. Background technique [0002] Fluorine is a gas at room temperature, its chemical properties are very active, and it can chemically react with many substances. It can form easily soluble metal complexes in acidic media, and mostly exists in the form of fluoride ions in alkaline media. Fluorine is widely distributed in nature in the form of various compounds. Fluorine is a trace element. Although adding a small amount of fluorine to drinking water is beneficial to the human body, it is an accumulative poison and has obvious toxicity to many organisms. It is easily absorbed by plants and humans and deposited in the body. Fluoride can interfere with the activity of various enzymes in the human body, inh...

Claims

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Application Information

Patent Timeline
08 Sep 2010
Publication
CN101823799A
IPC
C02F9/04; C02F1/56; C02F1/66; C02F101/14
Inventors
郭大磊; 孙玉华