Advanced disposal system and method of low-concentration fluorine-containing wastewater

An advanced treatment, low-concentration technology, applied in water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. Fluoride ion content in water and other problems, to achieve the effect of reducing process operating costs, stable and reliable process operation control, and prolonging regeneration cycle

Active Publication Date: 2019-04-12
HENAN LONGYU COAL CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem addressed by the present invention is: the treatment of fluorine-containing wastewater in the prior art cannot meet the requirements of greatly reducing the fluoride ion content in water, especially for the fluoride ion concentration in the wastewater is low but does not meet the requirements (the fluoride ion content is too high). High) the treatment effect of fluorine-containing wastewater is even less ideal, and the water obtained after treatment still has a relatively high content of fluoride ions

Method used

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  • Advanced disposal system and method of low-concentration fluorine-containing wastewater
  • Advanced disposal system and method of low-concentration fluorine-containing wastewater
  • Advanced disposal system and method of low-concentration fluorine-containing wastewater

Examples

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Effect test

Embodiment 1

[0069] An advanced treatment system for low-concentration fluorine-containing wastewater, such as figure 1 , figure 2 , image 3 As shown, the system includes a low-concentration fluorine-containing wastewater pool 1, a flocculation reaction unit 2 connected to the low-concentration fluorine-containing wastewater pool 1 through a delivery pipeline, a filter adsorption unit 3 connected to the flocculation reaction unit 2 through a delivery pipeline, and a The regeneration unit 4 that is connected to the filtration and adsorption unit 3 (in which the filter adsorbate is activated alumina) through the delivery pipeline and the drainage system 5 that is connected to the filtration and adsorption unit 3 through the delivery pipeline.

[0070] Wherein, the flocculation reaction unit 2 includes a first delivery pipeline 201 and a pipeline mixer 202 (the pipeline mixer is a static baffle pipeline mixer), and the first delivery pipeline 201 is provided with a first flocculant inlet 2...

Embodiment 2

[0078] One of the advanced treatment methods for low-concentration fluorine-containing wastewater by using the advanced treatment system for low-concentration fluorine-containing wastewater described in Example 1, the method comprises the following steps:

[0079] (1) Collect low-concentration fluorine-containing wastewater, the test results of which are shown in Table 1; the flow rate of low-concentration fluorine-containing wastewater is 100m3 / h;

[0080] (2) Transport the low-concentration fluorine-containing wastewater through the first conveying pipeline, and add iron-free aluminum sulfate from the first flocculant inlet to make it flow forward together with the low-concentration fluorine-containing wastewater in the pipeline while mixing Reaction, flow forward for 1min to reach the inlet of the second flocculant, and at the same time, add polyacryl acetamide from the inlet of the second flocculant, and carry out mixed reaction with the low-concentration fluorine-containin...

Embodiment 3

[0085] Using the advanced treatment system for low-concentration fluorine-containing wastewater described in Example 1 is the second method for advanced treatment of low-concentration fluorine-containing wastewater. The method comprises the following steps:

[0086] (1) Collect low-concentration fluorine-containing wastewater, the detection results of which are shown in Table 1; the flow rate of low-concentration fluorine-containing wastewater is 98m3 / h;

[0087] (2) Transport the low-concentration fluorine-containing wastewater through the first conveying pipeline, and add iron-free aluminum sulfate from the first flocculant inlet to make it flow forward together with the low-concentration fluorine-containing wastewater in the pipeline while mixing Reaction, flowing forward for 0.8min to reach the second flocculant inlet, and at the same time, polyacryl acetamide is added from the second flocculant inlet, and mixed with the low-concentration fluorine-containing waste water con...

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Abstract

The invention discloses an advanced disposal system and method of low-concentration fluorine-containing wastewater. The system comprises a low-concentration fluorine-containing wastewater pool, a flocculation reaction unit, a filtration adsorption unit, a regeneration unit, a drainage system, a waste liquid disposal unit, an automatic liquid level monitoring interlocking system and an online fluorine ion detection control system. The system is used for efficiently disposing the low-concentration fluorine-containing wastewater in the presence of different flocculants and activated alumina, andtherefore purified water with the fluorine ion content below 0.5mg / L can be obtained. The system and a disposal process integrate filtration, adsorption and regeneration into a whole part and have theadvantages that the structure is simple, operation is convenient, the disposal efficiency is high, and the purification effect is great. Standard discharge of fluorine-containing wastewater disposalis achieved completely, and water obtained after disposal can be directly recovered and serve as a water source for preparing pure water.

Description

technical field [0001] The invention belongs to the technical field of industrial wastewater treatment, and in particular relates to an advanced treatment system and an advanced treatment method for low-concentration fluorine-containing wastewater. Background technique [0002] Fluorine is the most active non-metallic element, and it is easy to react with various elements and chemical substances. At the same time, fluorine is also one of the essential trace elements for the human body. The human body takes it into the body through drinking water, breathing and food. However, too much fluorine intake by the human body will also have adverse effects on human health. When the fluorine content in drinking water is greater than 1.0 mg / L, long-term use can cause dental fluorosis and skeletal fluorosis, etc. When the fluorine content exceeds 6.0 mg / L, it can cause disabling severe skeletal fluorosis, mainly manifested as skeletal fluorosis. Deformation, general pain, loss of labo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04
CPCC02F9/00C02F1/5245C02F1/281C02F1/001C02F2101/14
Inventor 刘品涛陈照运侯刘涛沈小炎朱斌裴廷记薛志伟赵小磊康争争刘海强刘向东
Owner HENAN LONGYU COAL CHEM
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