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Regeneration-free high fluorine water defluorination technology

A process and technology of defluorinating agent, which is applied in the field of defluorinating high-fluorine water without regeneration, and can solve the problems of high fluorine content in the regeneration liquid, secondary pollution, troublesome operation, etc.

Inactive Publication Date: 2013-08-21
韩江 +1
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods all need to be regenerated, which brings troubles to the operation, and the regenerated liquid has a high fluorine content, which causes secondary pollution

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0012] A kind of non-regenerated high-fluorine water defluorination process of the present invention includes the following designs:

[0013] 1. Adding defluorinating agent process: the defluorinating agent in this process adopts aluminum-based flocculant, which is added into the water delivery pipeline through an automatic metering device, and mixed by a mixer to make the aluminum-based flocculant fully contact with fluorine ions in the water ;

[0014] 2. Reaction flocculation process: the water mixed by the mixer enters the vortex reaction flocculation equipment tangentially from the bottom. When the water rotates at a high speed, the probability of collision between the flocculant and the fluorine ion in the water is increased, and the speed of the rotating and rising water flow is continuously slowed down. , gradually forming flocs in the upper part of the reaction flocculation equipment;

[0015] 3. Sedimentation process: Water carries flocs into the rapid sedimentation...

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Abstract

The invention relates to a regeneration-free high fluorine water defluorination technology which comprises the following design: 1) addition of a fluorine removal agent: the fluorine removal agent in the technology is added into a water pipe and is mixed with and fully contacted with fluorinions in water through a mixer; 2) reaction flocculation: water mixed through the mixer enters vortex-type reaction flocculation equipment to form flocs; 3) precipitation: water with the flocs enters a quick precipitation device so as to complete precipitation within a short time; 4) filtration: filtering by the adoption of a ultrafilter membrane so as to make effluent standard accord with the national sanitary standard for drinking water (GB5749-2006); and 5) precipitate treatment: dehydrating a discharged precipitate through a filter press, returning an effluent to a water intake end, using a filter cake as a concrete additive to reduce cement content, and preparing a baking-free brick or briquetting for long-term storage.

Description

technical field [0001] The invention relates to a process for removing fluorine from high-fluorine water, in particular to a process for removing fluorine from high-fluorine water without regeneration. Background technique [0002] At present, in the water treatment process, there are many processes for removing fluoride from high-fluorine water, especially the adsorption method, such as modified zeolite method, bone char method, activated alumina method, activated magnesia method, hydroxyapatite method, etc. However, these methods all need to be regenerated, which brings troubles to the operation, and the fluorine content of the regenerated liquid is very high, which causes secondary pollution. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a high-fluorine water defluorination process that does not require regeneration. any secondary pollution. [0004] A kind of non-regenerated high-fluorine water defluorina...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F101/14
Inventor 韩江姜英杰
Owner 韩江
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