Method for removing high-concentration chloride ions in water by using modified fly ash

A fly ash, high-concentration technology, applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve the cost of easy oxidation of cuprous ions, high requirements for equipment corrosion resistance, and expensive silver ions and other problems, to achieve good physical and chemical adsorption, enhance anti-interference ability, and remove a wide range of pollution factors.

Pending Publication Date: 2021-04-02
JIANGSU JINGYUAN ENVIRONMENTAL PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although silver ions can precipitate chloride ions, silver ions are expensive and difficult to apply on a large scale
Cuprous ions can also form precipitation with chloride ions to remove chloride ions in water, but cuprous ions are extremely easy to oxidize and cost high, making it difficult for industrial application
Membrane separation technology can remove chloride ions in water, but most high-concentration chloride ion wastewater will exceed the application limit of membrane technology, and other components in wastewater will cause irreversible pollution to membrane components, thus limiting its application in this field
Evaporation technology is effective in treating high-chlorine wastewater, but it requires high corrosion resistance of equipment. At the same time, due to the high specific heat of water, the evaporation energy consumption is high, resulting in high-cost operation

Method used

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  • Method for removing high-concentration chloride ions in water by using modified fly ash

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Experimental program
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Effect test

Embodiment 1

[0033] Such as figure 1 Shown, a kind of method utilizing modified fly ash to remove high concentration chloride ion in water comprises the following specific steps:

[0034] Step 1: Add 100 parts of fly ash to a ball mill for pulverization and ball milling and sieving, the ball milling time is 45 minutes, and the sieving is to pass through a 100 mesh sieve to obtain fly ash fine powder;

[0035] Step 2: Add 150 parts of water solvent to the fine powder of fly ash to mix, and react under the action of ultrasonic waves. The frequency of ultrasonic waves is 40KHz, and the sound intensity is 0.6W / cm. After the reaction, enter the reaction kettle for high-temperature calcination and dry to obtain fly ash powder;

[0036] Step 3: Add 50 parts of antibacterial and antiseptic additives to the above-mentioned fly ash powder and heat and stir. The heating temperature is 50°, and the stirring time is 1H. After the mixing is completed, the reaction is carried out under the action of th...

Embodiment 2

[0055] A method for removing high-concentration chloride ions in water by using modified fly ash, comprising the following specific steps:

[0056] Step 1: Add 100 parts of fly ash to a ball mill for crushing and ball milling and sieving, the ball milling time is 50 minutes, and the sieving is to pass through a 120 mesh sieve to obtain a fine powder of fly ash;

[0057] Step 2: Add 200 parts of water solvent to the fine powder of fly ash to mix, and react under the action of ultrasonic waves. The frequency of ultrasonic waves is 45KHz, and the sound intensity is 0.7W / cm. After the reaction, enter the reaction kettle for high-temperature calcination and dry to obtain fly ash powder;

[0058] Step 3: Add 55 parts of antibacterial and antiseptic additives to the above-mentioned fly ash powder and heat and stir. The heating temperature is 65°, and the stirring time is 1H. After the mixing is completed, the reaction is carried out under the action of ultrasonic waves. The frequenc...

Embodiment 3

[0063] A method for removing high-concentration chloride ions in water by using modified fly ash, comprising the following specific steps:

[0064] Step 1: Add 100 parts of fly ash to a ball mill for pulverization and ball milling and sieving, the ball milling time is 60 minutes, and the sieving is to pass through a 150 mesh sieve to obtain fly ash fine powder;

[0065] Step 2: Add 250 parts of water solvent to the fine powder of fly ash to mix, and react under the action of ultrasonic waves. The frequency of ultrasonic waves is 50KHz, and the sound intensity is 0.8W / cm. After the reaction, enter the reaction kettle for high-temperature calcination and dry to obtain fly ash powder;

[0066] Step 3: Add 60 parts of antibacterial and antiseptic additives to the above-mentioned fly ash powder and heat and stir. The heating temperature is 80°, and the stirring time is 1H. After the mixing is completed, the reaction is carried out under the action of the ultrasonic wave. The frequ...

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Abstract

The invention relates to a method for removing high-concentration chloride ions in water by using modified fly ash, which comprises the following steps: adding fly ash into a ball mill, and conductingcrushing, ball-milling and sieving to obtain fly ash fine powder; adding a water solvent into the fly ash fine powder, conducting mixing, conducting reacting under the action of ultrasonic waves, andafter the ultrasonic reaction, feeding a reaction solution into a reaction kettle for high-temperature calcination and conducting drying to obtain fly ash powder; adding an antibacterial and anticorrosive additive, conducting heating and stirring, adding a surfactant additive, conducting mixing, conducting reacting under the action of ultrasonic waves, carrying out high-temperature calcination ina reaction kettle after the ultrasonic reaction, and conducting drying to obtain an additive fly ash; adding a modifier, conducting stirring and mixing, conducting reacting under the action of ultrasonic waves, adding n-butyl acrylate, rosin-based diene and diallyl phthalate, conducting stirring, sequentially conducting oscillating and washing with acetone and deionized water, carrying out filterpressing, carrying out vacuum drying, and conducting pulverizing to obtain modified fly ash; and adding wastewater into a reaction box, adding the modified fly ash, conducting stirring, and adding the stirred materials into a centrifugal clarifier for reaction.

Description

technical field [0001] The invention relates to the technical field, in particular to a method for removing high-concentration chloride ions in water by using modified fly ash. Background technique [0002] The methods for removing high chloride ions mainly include precipitation salt method, membrane separation method, evaporation concentration method and so on. Since chloride ions can form soluble salts with most metal ions, it is generally difficult to remove chloride ions by precipitation. Although silver ions can precipitate chloride ions, silver ions are expensive and difficult to apply on a large scale. Cuprous ions can also form precipitation with chloride ions to remove chloride ions in water, but cuprous ions are extremely easy to oxidize and cost high, making it difficult for industrial application. Membrane separation technology can remove chloride ions in water, but most high-concentration chloride ion wastewater will exceed the application limit of membrane te...

Claims

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Application Information

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IPC IPC(8): C02F1/28C02F1/52C02F101/12
CPCC02F1/281C02F1/5236C02F2101/12
Inventor 李武林李振玉季献华李宽王辰徐俊秀
Owner JIANGSU JINGYUAN ENVIRONMENTAL PROTECTION
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