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Composite sewage treatment agent based on inorganic non-metallic mineral material and application

A sewage treatment agent, inorganic non-metallic technology, applied in water/sewage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of large amount of sludge that is difficult to separate and recycle, printing and dyeing wastewater Disadvantages such as standard discharge and low treatment efficiency of printing and dyeing wastewater can achieve the effects of easy separation, flocculation and sedimentation, increased specific surface area, and easy separation

Active Publication Date: 2020-09-25
NANNING XIAYANG CHEM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The treatment efficiency of the existing chemical treatment agents for printing and dyeing wastewater is still low, resulting in the discharge of printing and dyeing wastewater that cannot meet the standards after treatment.

Method used

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  • Composite sewage treatment agent based on inorganic non-metallic mineral material and application
  • Composite sewage treatment agent based on inorganic non-metallic mineral material and application

Examples

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Example Embodiment

[0021] Example 1

[0022] A composite sewage treatment agent based on inorganic non-metallic mineral materials, comprising the following raw materials in parts by weight: 40 parts of bentonite, 28 parts of modified fly ash, 15 parts of kaolin, 15 parts of activated diatomite, and 5 parts of magnesium oxide , 8 parts of calcium hydroxide, 0.5 parts of humic acid;

[0023] Modified fly ash is prepared by the following method: add hydrochloric acid solution to 150-300 mesh fly ash, the solubility of hydrochloric acid is 2.5mol / L, the mass ratio of fly ash to hydrochloric acid is 1:2, ultrasonic treatment for 3h , filtered and washed to neutral, and dried at 100°C to obtain pretreated fly ash; mix the pretreated fly ash with water to prepare a fly ash suspension with a solid content of 40%, and add the pretreated fly ash Stir and mix 18% acrylamide in ash mass, heat up to 70°C, add dropwise 0.5% ammonium persulfate-sodium bisulfite initiator solution in acrylamide mass, the conce...

Example Embodiment

[0024] Example 2

[0025] A composite sewage treatment agent based on inorganic non-metallic mineral materials, comprising the following raw materials in parts by weight: 40 parts of bentonite, 28 parts of modified fly ash, 15 parts of kaolin, 15 parts of activated diatomite, and 4 parts of magnesium oxide , 8 parts of calcium hydroxide, 0.5 parts of humic acid;

[0026] Modified fly ash is prepared by the following method: add hydrochloric acid solution to 150-300 mesh fly ash, the solubility of hydrochloric acid is 2.5mol / L, the mass ratio of fly ash to hydrochloric acid is 1:2, ultrasonic treatment for 3h , filtered and washed to neutral, and dried at 100°C to obtain pretreated fly ash; mix the pretreated fly ash with water to prepare a fly ash suspension with a solid content of 40%, and add the pretreated fly ash Stir and mix 18% acrylamide in ash mass, heat up to 70°C, add dropwise 0.5% ammonium persulfate-sodium bisulfite initiator solution in acrylamide mass, the conce...

Example Embodiment

[0032] Example 3

[0033] A composite sewage treatment agent based on inorganic non-metallic mineral materials, comprising the following raw materials in parts by weight: 30 parts of bentonite, 25 parts of modified fly ash, 20 parts of kaolin, 12 parts of activated diatomite, and 2 parts of magnesium oxide , 5 parts of calcium hydroxide, 1 part of humic acid;

[0034] Modified fly ash is prepared by the following method: add hydrochloric acid solution to 150-300 mesh fly ash, the solubility of hydrochloric acid is 2mol / L, the mass ratio of fly ash to hydrochloric acid is 1:3, ultrasonic treatment for 3h, Filter and wash to neutral, dry at 100°C to obtain pretreated fly ash; mix the pretreated fly ash with water to prepare a fly ash suspension with a solid content of 30%, add the pretreated fly ash Stir and mix 15% acrylamide by mass, heat up to 60°C, add 0.4% ammonium persulfate-sodium bisulfite initiator solution by mass of acrylamide dropwise, the concentration of the initi...

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Abstract

The invention relates to the technical field of sewage treatment, and specifically discloses a composite sewage treatment agent based on an inorganic non-metallic mineral material. The composite sewage treatment agent is prepared from the following raw materials in parts by weight: 20 to 40 parts of bentonite, 20 to 30 parts of modified fly ash, 10 to 20 parts of kaolin, 10 to 20 parts of activated diatomite, 2 to 5 parts of magnesium oxide, 5 to 10 parts of calcium hydroxide and 0.2 to 1 part of humic acid. The modified fly ash is prepared by the following method: pretreating fly ash with hydrochloric acid to obtain pretreated fly ash; making the pretreated fly ash into a fly ash suspension, adding acrylamide, stirring and mixing, heating to 60-70 DEG C, and dropwise adding an initiator to react for 2-3 hours, thereby obtaining the modified fly ash. According to the composite sewage treatment agent, through the synergistic effect of adsorption, flocculation and precipitation, variouspollutants such as heavy metals, organic matters and chromaticity in printing and dyeing wastewater can be efficiently removed, and precipitates obtained after wastewater treatment are easy to separate and can be recycled, so that a regenerated composite sewage treatment agent is formed.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, in particular to a composite sewage treatment agent based on inorganic non-metallic mineral materials and its application. Background technique [0002] The chemical industry is a multi-industry and multi-variety industrial sector, including chemical mines, petrochemical industry, acid-base industry, chemical fertilizer industry, plastic industry, dye industry, detergent industry, etc. Chemical wastewater is produced from the production process of each chemical product Among them, a large amount of printing and dyeing wastewater that is difficult to treat is also produced in the printing and dyeing industry; printing and dyeing wastewater is discharged from printing and dyeing factories that mainly process cotton, hemp, chemical fibers and their blended products. Printing and dyeing wastewater has a large amount of water, 100-200 tons of water is consumed per ton of textile printing and ...

Claims

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Application Information

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IPC IPC(8): C02F1/28C02F1/52C02F1/56C02F101/16C02F101/20C02F101/30C02F103/30
CPCC02F1/5236C02F1/56C02F1/281C02F2101/30C02F2101/20C02F2103/30C02F2101/16
Inventor 韦明
Owner NANNING XIAYANG CHEM TECH CO LTD
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