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Compound medicament for treating coking wastewater and preparation method thereof

A technology for coking wastewater and chemicals, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of easy volatility or variation of chemicals, lack of chemical stabilization of the structure, and reduced wastewater treatment effect, etc. stable effect

Inactive Publication Date: 2012-10-10
ENVIRONMENTAL SCI RES & DESIGN INST OF ZHEJIANG PROVINCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the structure of the agent is not chemically stabilized, so the agent is easy to volatilize or mutate in the air at room temperature, and the effect of the agent on wastewater treatment will decrease after losing some components

Method used

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  • Compound medicament for treating coking wastewater and preparation method thereof
  • Compound medicament for treating coking wastewater and preparation method thereof
  • Compound medicament for treating coking wastewater and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Add 100g of sodium sulfate, 400g of aluminum sulfate and 20g of water into the reactor and stir. The temperature of the reactor is controlled at 90°C, and the reaction time is 2.5 hours. After the reaction is completed, cool to 35°C, and then add 75g of polyferric sulfate and 75g of activated silicic acid Sodium and 5g of chitosan were stirred twice, and then put into a constant temperature drying oven with a temperature of 100° C. for 40 hours to obtain the medicament I.

Embodiment 2

[0043] Add 100g of sodium sulfate, 350g of aluminum sulfate and 20g of water into the reactor and stir. The temperature of the reactor is controlled at 80°C, and the reaction time is 2 hours. After the reaction is completed, cool to 35°C, and then add 50g of polyferric sulfate and 50g of activated silicic acid The sodium and 3g of chitosan were stirred twice, and then placed in a constant temperature drying oven at a temperature of 105° C. for 40 hours to obtain the medicament II.

Embodiment 3

[0045] Add 100g of sodium sulfate, 380g of aluminum sulfate and 22g of water into the reactor and stir. The temperature of the reactor is controlled at 100°C, and the reaction time is 3 hours. After the reaction is completed, cool to 35°C, and then add 100g of polyferric sulfate and 100g of activated silicic acid The sodium and 6g of chitosan were stirred twice, and then placed in a constant temperature drying oven at a temperature of 95° C. for 40 hours to obtain the medicament III.

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Abstract

The invention discloses a compound medicament for treating coking wastewater and a preparation method thereof and belongs to the technical field of material and environment engineering. The compound medicament comprises the following components in part by mass: 100 parts of sodium sulfate, 350-450 parts of aluminum sulfate, 15-25 parts of water, 50-100 parts of polymeric ferric sulfate, 50-100 parts of activated sodium silicate and 2-8 parts of chitosan. The preparation method comprises the following steps: carrying out hydrothermal reaction after the sodium sulfate, the aluminum sulfate and the water are mixed according to the proportion, cooling, then adding the polymeric ferric sulfate, the activated sodium silicate and the chitosan according to the proportion, agitating, uniformly mixing, and drying at a constant temperature to obtain the compound medicament. The medicament prepared by the method has good removal effect on the treatment of biochemical effluent water of coking wastewater, pharmaceutical wastewater, printing and dyeing wastewater and garbage leachate wastewater, and particularly has better effect for removing both COD (Chemical Oxygen Demand) and chromaticity inthe coking wastewater.

Description

technical field [0001] The invention relates to the technical field of materials and environmental engineering, in particular to a compound agent for treating coking wastewater and a preparation method thereof. Background technique [0002] Coking wastewater with high concentration and refractory organic wastewater has many characteristics such as high concentration of organic matter, refractory biodegradation, many types of biotoxic substances, large content, and high concentration of ammonia nitrogen. Research and practice have proved that it is difficult to achieve the ideal by only one treatment method. Effect. [0003] Numerous studies have shown that the treatment of this type of wastewater requires a combination of multi-stage processes and methods. Judging from the treatment practice of coking wastewater in my country today, the problem is to find a method or means that is suitable for my country's national conditions and can effectively treat this type of wastewate...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/56
Inventor 沈浙萍韦彦斐梅荣武李欲如张刚王付超
Owner ENVIRONMENTAL SCI RES & DESIGN INST OF ZHEJIANG PROVINCE
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