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Coal slime water treatment process based on dimethyl diallyl ammonium chloride and polyacrylamide

A technology of dimethyl diallyl ammonium chloride and polyacrylamide, which is applied in the field of coal slime water treatment, can solve problems such as low efficiency and different adsorption characteristics, and achieve the goals of increasing pores, improving microstructure, and improving settlement efficiency Effect

Pending Publication Date: 2022-02-08
安徽汉华工贸有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] (1) Firstly, the ray diffraction method is used to determine the main mineral components contained in the slime water, and the interface properties of different mineral particles in the slime water are measured and analyzed. The density functional theory is used to simulate and calculate the adsorption characteristics of the mineral particle surface, and the slime water is constructed. The main mineral particle interface model is optimized, and the simulation calculation and analysis are carried out for the adsorption characteristics of different agents on the surface of different mineral particles. According to the simulation calculation results, the amount of added agents is determined, and the agents are sequentially added to the slime water according to the amount, and stirred and mixed. Coal slime water sedimentation treatment solves the problem of low efficiency of sedimentation treatment due to different adsorption characteristics of coal slime water due to factors such as different composition and pH;

Method used

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  • Coal slime water treatment process based on dimethyl diallyl ammonium chloride and polyacrylamide

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Effect test

Embodiment 1

[0032] The present embodiment is based on dimethyl diallyl ammonium chloride and polyacrylamide coal slime water treatment process, and the treatment process of this coal slime water comprises the following steps:

[0033] S1: Determination of the main mineral components contained in the slime water by ray diffraction method, and the determination and analysis of the interface properties of different mineral particles in the slime water;

[0034] S2: Using density functional theory to simulate and calculate the adsorption characteristics of the mineral particle surface, build and optimize the interface model of the main mineral particles in the slime water, and conduct simulation calculation analysis for the adsorption characteristics of different agents on the surface of different mineral particles;

[0035] S3: Determine the dosage of the added medicament according to the simulation calculation results;

[0036] S4: Add agents to the slime water in sequence according to the ...

Embodiment 2

[0044] The difference between this example and Example 1 is that the modified nano filter aid is prepared by the following steps:

[0045] S31: Wash the corn or wheat straw, dry it in a constant temperature drying oven, and pulverize it with a pulverizer, grind and sieve it, and place it in KMnO 4 Stir and soak for 24-36 hours, filter with suction, wash with distilled water until neutral, and then dry in a dryer at 60-70°C to obtain modified fibers;

[0046] S32: Add chitosan to deionized water, heat in a water bath at 45-55°C, stir at 3000-4000r / min until completely dissolved, then add FeS0 under nitrogen protection 4 ·7H 2 0 and FeCl 3 ·6H 2 0, heat up to 80-90°C, stir for 10-30min, add NH3·H 2 0 to pH 9-10, continue heating and stirring for 30-40min, add modified fiber, stir for 60-120min, wash with distilled water until neutral, collect with magnetic separation equipment, and dry in a vacuum oven at 60-70°C 12-24h, to obtain nano-intermediate A;

[0047] S33: Wash, d...

Embodiment 3

[0051] The difference between this example and Example 1 is that the modified nano filter aid is prepared by the following steps:

[0052] S31: Wash the corn or wheat straw, dry it in a constant temperature drying oven, and pulverize it with a pulverizer, grind and sieve it, and place it in KMnO 4 Stir and soak for 24-36 hours, filter with suction, wash with distilled water until neutral, and then dry in a dryer at 60-70°C to obtain modified fibers;

[0053] S32: Add chitosan to deionized water, heat in a water bath at 45-55°C, stir at 3000-4000r / min until completely dissolved, then add FeS0 under nitrogen protection 4 ·7H 2 0 and FeCl 3 ·6H 2 0, heat up to 80-90°C, stir for 10-30min, add NH3·H 2 0 to pH 9-10, continue heating and stirring for 30-40min, add modified fiber, stir for 60-120min, wash with distilled water until neutral, collect with magnetic separation equipment, and dry in a vacuum oven at 60-70°C 12-24h, to obtain nano-intermediate A;

[0054] S33: Wash, d...

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Abstract

The invention discloses a coal slime water treatment process based on dimethyl diallyl ammonium chloride and polyacrylamide, which comprises the following steps: washing corn or wheat straws, conducting drying, conducting grinding, conducting sieving, putting the sieved material into KMnO4, conducting stirring, conducting soaking to obtain modified fibers, and adding chitosan into deionized water. The problem that the sedimentation treatment efficiency is low due to different adsorption characteristics caused by factors such as different components and pH values of the coal slime water is solved. Ferroferric oxide is relatively high in magnetic performance, relatively simple to prepare and very high in inertness, the corn and wheat straw are utilized, the magnetic effect can be improved, waste can be recycled, and in cooperation with the coagulation aiding effect of polyacrylamide, the capacity of removing suspended particles in water can be improved, and the time of sludge precipitation and sludge removal in follow-up process can be shortened. Meanwhile, the volume of a reaction tank is reduced, the land utilization rate is improved, and the degradation cost of agricultural products is reduced, so that the aim of improving the sedimentation and filter pressing efficiency is fulfilled.

Description

technical field [0001] The invention relates to the field of coal slime water treatment, in particular to a coal slime water treatment process based on dimethyl diallyl ammonium chloride and polyacrylamide. Background technique [0002] Coal slime water mainly refers to sewage mixed with a large amount of coal powder and soil. Coal slime in the water generally has a particle size of less than 0.5mm. Coal slime water is an important working medium in the coal preparation process, and it is also industrial wastewater generated in the wet coal processing process. In the coal preparation process, the treatment of coal slime water involves a wide range of areas, requires a large investment, and is difficult to manage. The slime water is particularly stable and will not settle naturally after standing for several months. Due to the deterioration of water quality in the process of closed loop circulation of muddy water, it is more and more necessary to protect the environment, and ...

Claims

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Application Information

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IPC IPC(8): B03D3/06B03D103/08
CPCB03D3/06B03D2201/002B03D2203/08
Inventor 朱瑞保朱冯
Owner 安徽汉华工贸有限责任公司
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