Preparation method and application of water treatment agent for modifying activated clay by humic acid

A technology of activated clay and water treatment agent, which is applied in water/sewage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problems of losing crystal water and affecting the fading effect, so as to increase adsorption, Favorable effect of adsorption, strong organic adsorption and reduction ability

Inactive Publication Date: 2019-10-11
中化化工科学技术研究总院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when heated above 300°C, it begins to lose crystal water, and after the structure changes, it will affect the fading effect

Method used

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  • Preparation method and application of water treatment agent for modifying activated clay by humic acid
  • Preparation method and application of water treatment agent for modifying activated clay by humic acid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The preparation method of the water treatment agent of active clay modified with humic acid comprises:

[0025] Step 1: Disperse 100 g of 100-mesh activated clay in an ethanol solution with a mass concentration of 30% to form a sol-like suspension;

[0026] Step 2: Crush 100g of weathered coal into 80 mesh and add it to a round bottom flask, add 500g of water, stir thoroughly for 10 minutes, add 20ml of 30% ammonia water, react at 60°C for 4 hours, and let it stand at room temperature for 8 hours Afterwards, the supernatant was taken for use;

[0027] Step 3: the supernatant is added in the reactor, and the catalyst (FeSO 4 :CuSO 4 =7:1), add 50ml of 25% hydrogen peroxide, and maintain the pressure at 12kg / cm 2 , 40°C, reaction time 15h, degassing after the reaction, and prepare humic acid solution;

[0028] Step 4: Mix humic acid solution and activated clay suspension at a ratio of 1:1, disperse 200ml of the mixed solution under 800W ultrasonic conditions for 10min...

Embodiment 2

[0030] The preparation method of the water treatment agent of active clay modified with humic acid comprises:

[0031] Step 1: Disperse 100 g of 150-mesh activated clay in an ethanol solution with a mass concentration of 40% to form a sol-like suspension;

[0032] Step 2: Crush 100g of weathered coal into 80 mesh and add it to a round bottom flask, add 500g of water, stir thoroughly for 10 minutes, add 40ml of 30% ammonia water, react at 60°C for 4 hours, and let it stand at room temperature for 8 hours Afterwards, the supernatant was taken for use;

[0033] Step 3: the supernatant is added in the reactor, and the catalyst (FeSO 4 :CuSO 4 =7:1), add 25% hydrogen peroxide 10ml, maintain pressure 1kg / cm 2 , the reaction temperature is 60°C, the reaction time is 10h, and the gas is released after the reaction is completed, and the humic acid solution is prepared;

[0034] Step 4: Mix humic acid solution and activated clay suspension at 1:1, disperse 200ml of the mixed solutio...

Embodiment 3

[0036] The preparation method of the water treatment agent of active clay modified with humic acid comprises:

[0037] Step 1: Dispersing 100 g of activated clay with a mass concentration of 50% or more into a sol-like suspension;

[0038] Step 2: Crush 100g of weathered coal into 80 mesh and add it to a round bottom flask, add 500g of water, stir thoroughly for 10 minutes, add 50ml of 30% ammonia water, react at 70°C for 4 hours, and let it stand at room temperature for 8 hours Afterwards, the supernatant was taken for use;

[0039] Step 3: adding the supernatant to the reactor, adding a mass ratio of 0.2% catalyst (FeSO 4 :CuSO 4 =7:1), add 25% hydrogen peroxide 40ml, maintain pressure 10kg / cm 2 , the reaction temperature is 80°C, the reaction time is 8 hours, after the reaction is completed, the gas is released, and the reaction solution is taken out;

[0040] Step 4: Mix humic acid solution and activated clay suspension at 1:1, disperse 200ml of the mixed solution unde...

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Abstract

The invention discloses a preparation method and application of a water treatment agent for modifying activated clay by humic acid, and belongs to the field of sewage treatment. The preparation methodof the water treatment agent for modifying the activated clay by the humic acid comprises the steps that step 1, the activated clay is dispersed in a solution; step 2, weathered coal is smashed and then mixed with water, uniform stirring is carried out, ammonium hydroxide is added for a reaction, after the reaction is completed, the reactant is placed at the room temperature for standing, and supernatant is taken; step 3, the supernatant is placed into a reaction kettle, a catalyst and hydrogen peroxide are added for a reaction, and a humic acid solution is prepared; step 4, after the activated clay solution prepared in step 1 and the humic acid solution prepared in step 3 are mixed, dispersed and fully stirred, microwave drying and grinding are carried out to obtain the water treatment agent. The prepared water treatment agent has developed gaps, which is conductive to absorbing organic matter and heavy metal ions, the cost is low, the sources of the raw materials are wide, and the secondary pollution is small.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a preparation method of a water treatment agent modified with humic acid and its application. Background technique [0002] With the development of my country's economy, the problem of non-point source water pollution has become increasingly prominent, and organic pollutants in water have caused more and more environmental pollution. Traditional water treatment chemicals cannot fundamentally remove complex and stable organic matter in water, so finding new water treatment chemicals that are efficient, cheap, and environmentally friendly has become an urgent problem in the field of sewage treatment. [0003] Activated clay is an adsorbent made from clay (mainly bentonite), treated with inorganic acid or salt or other methods, rinsed with water, and dried. The appearance is milky white powder, odorless, tasteless, non-toxic, and adsorbable It has strong performance and ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24C02F1/28B01J20/30
CPCB01J20/12B01J20/24C02F1/286C02F1/281
Inventor 郑晓东俞龙泉秦志伟于庆彬李艳艳侯学峰周少雄姚力孙昌焕李立兵刘兰涛
Owner 中化化工科学技术研究总院有限公司
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