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Deep treatment method of fluorine-containing waste water

A technology for advanced treatment and waste water, applied in the direction of neutralization water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., which can solve the problems of high investment cost and operation cost, frequent and complex regeneration and backwashing , production cost waste and other issues, to achieve the effect of improving synergy, improving the effect of fluorine removal, and increasing the surface roughness

Active Publication Date: 2019-07-23
山东环瑞生态科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional advanced treatment methods include adsorption method, ion exchange method, reverse osmosis method, etc., but the investment cost and operating cost are generally high, and there are strict requirements on water quality, frequent and complicated regeneration, backwashing, etc., and are only suitable for treating small streams of wastewater
Therefore, there is an urgent need to develop a method for efficient advanced treatment of fluorine-containing wastewater to overcome the problems of substandard treated wastewater caused by traditional processes and a large waste of production costs.

Method used

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  • Deep treatment method of fluorine-containing waste water

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Embodiment 1

[0032] A method for advanced treatment of fluorine-containing wastewater, comprising the steps of:

[0033] (1) Preprocessing section:

[0034] S1: Fluoride-containing wastewater (fluorine ion content is 400mg / L) enters the 1# reaction pool, and according to the pH of the wastewater, add a pH regulator such as hydrochloric acid or liquid alkali to the 1# reaction pool to adjust the pH value of the wastewater to 7.5- 8. Stay for 10 minutes;

[0035] S2: Introduce the upper wastewater treated by the 1# reaction pool into the 2# reaction pool, and add the high-efficiency defluoridation agent GMS-F1 and the reaction catalyst to the 2# reaction pool according to the content of fluoride ions in the wastewater, among which, GMS-F1 The mass ratio of the dosing mass of the catalyst to the mass of fluoride ions in the waste water is 18:1, the mass ratio of the mass of the reaction catalyst to the mass of fluorine ions in the waste water is 0.1:1, and the upper layer of waste water is i...

Embodiment 2

[0044] A method for advanced treatment of fluorine-containing wastewater, comprising the steps of:

[0045] (1) Preprocessing section:

[0046] S1: Fluorine-containing waste water (fluorine ion content is 400mg / L) enters the 1# reaction pool, and according to the pH of the waste water, add a pH regulator to the 1# reaction pool, adjust the pH value of the waste water to 7.5-8, and stay for 10 minutes;

[0047] S2: Introduce the upper wastewater treated by the 1# reaction pool into the 2# reaction pool, and add the high-efficiency defluoridation agent GMS-F1 and the reaction catalyst to the 2# reaction pool according to the content of fluoride ions in the wastewater, among which, GMS-F1 The mass ratio of the dosing mass of the reaction catalyst to the mass of fluoride ions in the waste water is 15:1, the mass ratio of the mass of the reaction catalyst to the mass of fluorine ions in the waste water is 0.1:1, and the upper layer of waste water is introduced into the 3# reaction ...

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Abstract

The invention discloses a deep treatment method of fluorine-containing waste water and belongs to the technical field of treatment of the fluorine-containing waste water. The deep treatment method comprises the following steps: leading the fluorine-containing waste water to enter a reaction tank 1, regulating the pH (Potential of hydrogen) value of the waste water, staying for 10 min and then introducing upper-layer waste water into a reaction tank 2, adding GMS-F1 and CaF2, stirring for reaction and then introducing upper-layer waste water into a reaction tank 3, adding GMS-F5, stirring for reaction and then introducing upper-layer waste water into a reaction tank 4, adding a flocculating agent, stirring for reaction and then introducing upper-layer waste water into a sloping plate precipitation tank for treatment, and leading supernatant to flow into a buffering tank 1; introducing waste water in the buffering tank 1 into a reaction tank 5, adding the GMS-F5, stirring for reaction and then introducing upper-layer waste water into a reaction tank 6, regulating the pH value of the waste water, staying for 10 min and then introducing upper-layer waste water into a reaction tank 7, adding the flocculating agent, stirring for reaction and then introducing upper-layer waste water into the sloping plate precipitation tank for treatment, and leading supernatant to flow into a buffering tank 2; introducing waste water in the buffering tank 2 into a sand filtering tank, filtering, and then discharging. The deep treatment method disclosed by the invention has the advantage that after the fluorine-containing waste water is treated by the method, the content of fluorine ions in the discharged water can be lower than 1 mg / L.

Description

technical field [0001] The invention relates to a method for advanced treatment of fluorine-containing wastewater, which belongs to the technical field of fluorine-containing wastewater treatment. Background technique [0002] In recent years, my country's fluorine chemical industry has developed rapidly, and the overall fluorine chemical market is growing at a rate of 15-20%. In the future, the fluorine chemical industry will also be one of the fastest growing industries in the chemical industry. However, the environmental threat brought by the rapid development of the fluorine chemical industry has become the biggest obstacle to the sustainable development of the industry. On the one hand, due to the large amount of fluorine-containing wastewater produced in the manufacturing process of fluorine chemical products, it is easy to pollute water, soil and plants. On the other hand, because most of the fluorine element in wastewater treatment eventually enters into the sludge,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F101/14
CPCC02F1/001C02F1/52C02F1/56C02F1/66C02F9/00C02F2001/007C02F2101/14
Inventor 史贞峰尚勇王路路李宝禄
Owner 山东环瑞生态科技有限公司
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