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A high-efficiency defluoridation agent and its application

A chemical and efficient technology, applied in the fields of flocculation/sedimentation water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc. and other problems, to achieve the effect of improving the reaction speed, good sedimentation efficiency, and fast fluorine removal speed

Active Publication Date: 2022-03-25
山东环瑞生态科技有限公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, single use of CaO or Ca(OH) 2 To treat fluorine-containing wastewater, the generated CaF 2 The precipitate will be wrapped in Ca(OH) 2 The surface of the particles makes the utilization efficiency of calcium salts low, and the precipitation process is very slow, which can only reduce the concentration of fluoride ions to 20-30mg / L, which cannot meet the national emission standards

Method used

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  • A high-efficiency defluoridation agent and its application
  • A high-efficiency defluoridation agent and its application

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Embodiment 1

[0026] A high-efficiency fluorine-removing agent is composed of the following components by mass fraction: polyferric chloride 8%, polyferric sulfate 16%, polyaluminum sulfate 16%, polyaluminum ferric sulfate 16%, polyaluminum chloride 18%, tea leaves Iron 7%, modified fly ash 6%, modified zeolite 6%, calcium hydrogen phosphate 4%, activated silicic acid 3%.

[0027] Among them, polyferric chloride, polyferric sulfate, polyaluminum sulfate, polyaluminum ferric sulfate, polyaluminum chloride, calcium hydrogen phosphate, activated silicic acid are all commercially available products; Su Wan, Zhang Yong, Wu Qi.Adsorption performance and kinetics of iron in tea[J].Chemical World,2010,51(09):516-519+523+526.) Prepared;

[0028] The preparation steps of modified fly ash are as follows: mix fly ash and calcium hydroxide in a mass ratio of 1:0.3 and place them in a crucible, then burn them in a muffle furnace at 550°C for 2.5 hours, cool them to room temperature and grind them , and ...

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Abstract

The invention discloses a high-efficiency fluoride removal agent and its application, belonging to the technical field of fluorine-containing wastewater treatment. The fluorine removal agent is composed of the following components by mass fraction: 8% polyferric chloride, 16% polyferric sulfate, 16% polyaluminum sulfate, 16% polyaluminum ferric sulfate, 18% polyaluminum chloride, and 7% tea-made iron , modified fly ash 6%, modified zeolite 6%, calcium hydrogen phosphate 4%, coagulant 3%. When the fluorine-removing agent is used to treat fluorine-containing waste water, the removal rate of fluoride ions can reach more than 95 percent after stirring and reacting for 15 minutes, and the fluorine-removing speed is fast and the fluorine-removing effect is good.

Description

technical field [0001] The invention relates to a fluorine-removing agent, in particular to an efficient fluorine-removing agent, and belongs to the technical field of fluorine-containing wastewater treatment. Background technique [0002] Coal chemical wastewater is industrial wastewater produced in the coal chemical production process. The coal chemical production process uses coal as raw material to convert coal into gaseous, liquid, solid products and various chemical products through chemical production processes such as coal coking, coal gasification, coal liquefaction, and tar chemical production. The wastewater produced by this production process mainly includes coking wastewater, gasification wastewater and liquefaction wastewater. The pollutants in coal chemical wastewater mainly include fluoride and other pollutants. [0003] At present, the treatment methods of fluorinated water mainly include adsorption method, electrocoagulation method, reverse osmosis method...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52C02F1/28C02F101/14
CPCC02F1/5236C02F1/288C02F1/281C02F2101/14
Inventor 尚勇史贞峰戚翠红王路路
Owner 山东环瑞生态科技有限公司
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