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Composite sponge material and preparation method thereof, and application of composite sponge material in treatment of high-salt high-calorific-value wastewater

A technology of composite sponge and calcium salt, which is applied in the field of composite sponge materials and its preparation, can solve the problems of pharmacy cost, unbearable time cost, shortened service life of equipment, and difficulty in meeting emission standards, so as to achieve controllable cost and reduce possibility , The effect of reducing the amount of solid waste generated

Active Publication Date: 2021-10-19
南京乐透思高新材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] With social development and industrial progress, many industries have difficult-to-treat high-concentration wastewater, such as pharmaceutical wastewater, emulsion wastewater, deplating concentrate, etc., which generally have high salinity, high chroma, high organic content, and high biological toxicity. The problem is that the conventional chemical agent method and microbial method are unbearable in terms of agent cost, time cost, and infrastructure cost, and it is difficult to meet the gradually increasing emission standards
[0006] The existing technology usually burns waste water with high salt content and high calorific value directly, which will cause the temperature in the incinerator to be too high, causing the furnace temperature to exceed 1000°C, resulting in the formation of molten salt, which will agglomerate and stick to the bottom of the incinerator when it is shut down for cooling. Shorter equipment life and higher processing costs

Method used

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  • Composite sponge material and preparation method thereof, and application of composite sponge material in treatment of high-salt high-calorific-value wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] A batch of concentrated wastewater with high salinity and high calorific value after three-effect evaporation needs to be treated. The water quality indicators of the concentrated pharmaceutical wastewater with high salinity and high calorific value: COD is 628800mg / L, salt content is 240g / L, and calorific value is 3650J / L kg. (The source of the waste water is Hongbaoli Group Sodium Phenate Concentrated Wastewater.)

[0056] Composite sponge material, including the following mass fractions:

[0057] Inorganic drying agent 85%;

[0058] Organic curing coagulant 15%;

[0059] The mass fraction of each substance in the inorganic drying agent is as follows:

[0060] Calcium salt 45%; the mass ratio of calcium oxide, calcium sulfate, calcium sulfate hemihydrate, calcium hydroxide, and calcium carbonate in calcium salt is: 1:0:1:1:1

[0061] Aluminum salt 15%; the mass ratio of aluminum oxide, aluminum sulfate, and washed red aluminum mud in aluminum salt is 1:1:1;

[00...

Embodiment 2

[0068] A batch of concentrated wastewater with high salinity and high calorific value after three-effect evaporation needs to be treated. The water quality indicators of the concentrated pharmaceutical wastewater with high salinity and high calorific value: COD is 628800mg / L, salt content is 240g / L, and calorific value is 3650J / L kg. (The source of the waste water is Hongbaoli Group Sodium Phenate Concentrated Wastewater.)

[0069] Composite sponge material, including the following mass fractions:

[0070] Inorganic drying agent 90%;

[0071] Organic curing coagulant 10%;

[0072] The mass fraction of each substance in the inorganic drying agent is as follows:

[0073] Calcium salt 35%; the mass ratio of calcium oxide, calcium sulfate, calcium sulfate hemihydrate, calcium hydroxide, and calcium carbonate in calcium salt is: 1:0.5:0.5:1:1

[0074] Aluminum salt 15%; the mass ratio of aluminum oxide, aluminum sulfate, and washed red aluminum mud in aluminum salt is 0.5:0.5:1...

Embodiment 3

[0081] A batch of concentrated wastewater with high salinity and high calorific value after three-effect evaporation needs to be treated. The water quality indicators of the concentrated pharmaceutical wastewater with high salinity and high calorific value: COD is 628800mg / L, salt content is 240g / L, and calorific value is 3650J / L kg. (The source of the waste water is Hongbaoli Group Sodium Phenate Concentrated Wastewater.)

[0082] Composite sponge material, including the following mass fractions:

[0083] Inorganic drying agent 95%;

[0084] Organic curing coagulant 5%;

[0085] The mass fraction of each substance in the inorganic drying agent is as follows:

[0086] Calcium salt 35%; the mass ratio of calcium oxide, calcium sulfate, calcium sulfate hemihydrate, calcium hydroxide, and calcium carbonate in calcium salt is: 1:1:0:1:1

[0087] Aluminum salt: 5%; the mass ratio in aluminum oxide, aluminum sulfate, and washed red aluminum mud in aluminum salt is 0.5:0.5:2;

...

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Abstract

The invention relates to a composite sponge material and a preparation method thereof, and application of the composite sponge material in treatment of high-salt high-calorific-value wastewater. The composite sponge material is formed by mixing an inorganic drying agent and an organic curing coagulant, can efficiently cure wastewater, and overcomes the problems that special wastewater is difficult to treat, treatment cost is high and secondary pollution is caused. A using method of the composite sponge material comprises the following steps: uniformly mixing wastewater and the composite sponge material to a semi-solid state, and conducting drying to obtain solid waste; and incinerating the solid waste. The composite sponge material is suitable for treatment of the high-salt high-calorific-value wastewater, good in effect, mild in incineration conditions and short in incineration time, and the solid waste obtained after incineration is powdery, so the problem that incineration equipment is damaged by molten salt in a direct incineration process of the high-calorific-value wastewater can be effectively solved; and a drying agent in the material can be recycled, and treatment cost is low.

Description

technical field [0001] The invention relates to the technical field of restoration and treatment of polluted water bodies, in particular to a composite sponge material and its preparation method and its application in treating high-salt and high-calorific-value wastewater. [0002] technical background [0003] High-salt wastewater High calorific value wastewater refers to the discharged wastewater from industrial wastewater with a total salt content greater than 10%, containing relatively high levels such as Cl-, SO 4 2 -, Na + , Ca 2+ and other inorganic ions, and contain a large amount of organic salts such as sodium phenate, which are toxic, harmful and not easily biodegradable. Due to its complex and diverse components, high salinity, and strong inhibitory effect on microbial growth, this wastewater treatment technology is much more difficult than ordinary sewage treatment. The amount of high-salt wastewater produced in my country accounts for 5% of the total wastewa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/00C02F1/28C02F1/52C02F101/30
CPCC02F1/00C02F1/281C02F1/286C02F1/285C02F1/5236C02F2101/30C02F2303/16
Inventor 朱成成沈琰彦刘兹敏孟莉蓉
Owner 南京乐透思高新材料科技有限公司
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