A kind of coagulant for strengthening treatment of chemical sewage and its preparation method and use

A technology for intensive treatment of chemical sewage, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of unqualified effluent water quality, unstable sewage quality, high operating costs, etc., and achieve the effect of low price, easy operation, and wide range of materials

Active Publication Date: 2016-08-17
中科朗坤(深圳)绿色创新发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the construction of many chemical sewage treatment facilities, the operating costs are high, the quality of the effluent water cannot meet the standard or the quality of the sewage is unstable, resulting in increased pollution

Method used

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  • A kind of coagulant for strengthening treatment of chemical sewage and its preparation method and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] In Example 1 of the present invention, a coagulant for enhanced treatment of chemical sewage is composed of the following raw materials in parts by weight: 37 parts of montmorillonite, 18 parts of split wood, 48 parts of dimethylformamide, sodium polyacrylate 3 parts, 10 parts of disodium edetate.

[0020] Grind the split wood into powder, and pass through a 200-mesh sieve to make the split wood powder. At a stirring speed of 160r / min, mix the split wood powder with half the weight of dimethylformamide, and heat to 75°C. And keep it at this temperature for 30 minutes, and then carry out the first stage of ultrasonic treatment, the ultrasonic treatment time is 1 hour, the ultrasonic power is 900W, and the ultrasonic temperature is 90°C to obtain the first ultrasonic liquid. At a stirring speed of 160r / min, add sodium polyacrylate and the other half of the weight part of dimethylformamide into the first ultrasonic liquid, heat to 100°C, and keep at this temperature for 30...

Embodiment 2

[0022] In Example 2 of the present invention, a coagulant for enhanced treatment of chemical sewage is composed of the following raw materials in parts by weight: 46 parts of montmorillonite, 25 parts of split wood, 55 parts of dimethylformamide, sodium polyacrylate 8 parts, 15 parts of disodium edetate.

[0023] Grind the split wood into powder, and pass through a 200-mesh sieve to make the split wood powder. At a stirring speed of 200r / min, mix the split wood powder with half the weight of dimethylformamide, and heat to 85°C. And keep at this temperature for 50 minutes, and then carry out the first stage of ultrasonic treatment, the ultrasonic treatment time is 1.5 hours, the ultrasonic power is 900W, and the ultrasonic temperature is 95°C to obtain the first ultrasonic liquid. At a stirring speed of 200r / min, add sodium polyacrylate and the other half of the weight part of dimethylformamide into the first ultrasonic liquid, heat to 110°C, and keep at this temperature for 50...

Embodiment 3

[0025] In Example 3 of the present invention, a coagulant for enhanced treatment of chemical sewage is composed of the following raw materials in parts by weight: 40 parts of montmorillonite, 19 parts of heartwood, 50 parts of dimethylformamide, sodium polyacrylate 5 parts, 11 parts of disodium edetate.

[0026] Grind the split wood into powder, and pass through a 200-mesh sieve to make the split wood powder. At a stirring speed of 180r / min, mix the split wood powder with half the weight of dimethylformamide, and heat to 80°C. And keep at this temperature for 40 minutes, and then carry out the first stage of ultrasonic treatment, the ultrasonic treatment time is 1.2 hours, the ultrasonic power is 900W, the ultrasonic temperature is 92°C, and the first ultrasonic liquid is obtained. At a stirring speed of 180r / min, add sodium polyacrylate and the other half of the weight part of dimethylformamide into the first ultrasonic liquid, heat to 105°C, and keep at this temperature for ...

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Abstract

The present invention relates to a chemical industry sewage strengthening treatment coagulant, a preparation method and uses thereof, wherein the raw materials comprise, by weight, 37-46 parts of montmorillonite, 18-25 parts of juglans regia, 48-55 parts of dimethyl formamide, 3-8 parts of sodium polyacrylate, and 10-15 parts of disodium ethylenediaminetetraacetate. The preparation method comprises: grinding juglans regia into powder, mixing with dimethyl formamide, carrying out a heating treatment and an ultrasonic treatment, adding the other half part by weight of dimethyl formamide to the first ultrasonic solution, carrying out a heating treatment and an ultrasonic treatment to obtain a second ultrasonic solution, adding deionized water to montmorillonite, carrying out a heating treatment and an ultrasonic treatment to obtain a third ultrasonic solution, mixing the second ultrasonic solution and the third ultrasonic solution, adding disodium ethylenediaminetetraacetate, carrying out heating stirring, and carrying out spray drying to obtain the chemical industry sewage strengthening treatment coagulant. According to the present invention, SS, COD, BOD, organic substances and the like in the sewage can be effectively removed, the suspended solids in the sewage are efficiently removed, the turbidity is significantly decreased, and the water is clear.

Description

technical field [0001] The invention relates to the technical field of chemical sewage treatment, in particular to a coagulant for enhanced treatment of chemical sewage and its preparation method and application. Background technique [0002] Chemical wastewater refers to the wastewater produced in the process of producing products in chemical plants, such as the oily wastewater produced in the production of ethylene, polyethylene, rubber, polyester, methanol, ethylene glycol, oil tank farms, air separation and air compressor stations, etc. After biochemical treatment, it can generally meet the national secondary discharge standard. Due to the shortage of water resources, the water that meets the discharge standard needs to be further treated to meet the requirements of industrial water replenishment and reused. The composition of chemical wastewater is complex, and the reaction raw materials are often solvent-like substances or compounds with ring structures, which increase...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52C02F1/56C02F1/54
Inventor 马慧赵秀敏王海峰
Owner 中科朗坤(深圳)绿色创新发展有限公司
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