Application of Catalyst Using Waste Adsorbent After Adsorption-Desorption as Raw Materials in Activated Persulfate Treatment of High Salt Organic Wastewater

An organic wastewater and adsorbent technology, which is applied in the fields of oxidized water/sewage treatment, physical/chemical process catalyst, water/sewage treatment, etc. The effect of relieving the pressure of solid waste disposal, high removal rate of organic matter, and avoiding secondary pollution

Active Publication Date: 2022-03-11
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the regeneration and reuse of the adsorbent saturated with copper ions is also a difficult problem. The adsorbent that adsorbs heavy metals will eventually become solid waste and is called secondary pollution, and there is currently no good treatment method
Because copper ions have good chemical stability after being adsorbed into the adsorbent, they are not easy to be leached out and cannot be effectively treated, so they can only be piled up, which seriously pollutes the environment
[0006] Based on the current problems: the adsorbent for adsorbing copper ions cannot be effectively treated, which seriously pollutes the environment; traditional metal-based catalysts are prone to produce by-products for high-salt organic wastewater, and the treatment effect is low. It is urgent to develop a directional activation process. Catalyst for sulfate degradation of pollutants via non-free pathways

Method used

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  • Application of Catalyst Using Waste Adsorbent After Adsorption-Desorption as Raw Materials in Activated Persulfate Treatment of High Salt Organic Wastewater
  • Application of Catalyst Using Waste Adsorbent After Adsorption-Desorption as Raw Materials in Activated Persulfate Treatment of High Salt Organic Wastewater
  • Application of Catalyst Using Waste Adsorbent After Adsorption-Desorption as Raw Materials in Activated Persulfate Treatment of High Salt Organic Wastewater

Examples

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Comparison scheme
Effect test

Embodiment 1

[0050] The catalyst using the waste adsorbent after adsorption-desorption as raw material is applied in the treatment of high-salt organic wastewater by activating persulfate, including the following steps:

[0051] (1) Dry the waste biomass adsorbent after 8 times of adsorption-desorption of Cu ions, take 10 g of the dried waste adsorbent, mix it according to the mass ratio of waste adsorbent: dicyandiamide 1:5, and put it into a porcelain boat Compact it, put it into a tube furnace, heat it up to 900°C at a rate of 10°C / min under a nitrogen atmosphere for pyrolysis, keep it warm for 2 hours and then bring it to room temperature, take it out and wash it with deionized water, and finally put it at 60°C drying to obtain the spent adsorbent-based catalyst;

[0052] (2) Add the waste adsorbent-based catalyst into the high-salt organic wastewater, and add persulfate at the same time. The dosage of persulfate is 0.2 g / L. React for 90 minutes to degrade and remove persistent organi...

Embodiment 2

[0054] The catalyst with the discarded adsorbent after adsorption-desorption as raw material described in Example 1 is used in activated persulfate treatment of high-salt organic wastewater, the difference being that the mass ratio of the discarded adsorbent to dicyandiamide is 1 :0.

Embodiment 3

[0056] The catalyst with the discarded adsorbent after adsorption-desorption as raw material described in Example 1 is used in activated persulfate treatment of high-salt organic wastewater, the difference being that the mass ratio of the discarded adsorbent to dicyandiamide is 1 :10.

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Abstract

The invention relates to the application of a catalyst using the waste adsorbent after adsorption-analysis as a raw material in the treatment of high-salt organic wastewater by activating persulfate. In the present invention, the discarded adsorbent after repeated adsorption of heavy metal ions-desorption is mixed with a nitrogen source, and the discarded adsorbent-based catalyst is obtained after pyrolysis under anaerobic conditions, and the discarded adsorbent-based catalyst is introduced into high-salt organic wastewater, and added Sulfate is used to activate sulfate to generate non-free radicals, and efficiently degrade persistent organic pollutants in high-salt organic wastewater through non-free radicals. Sulfate provides a new way to degrade pollutants through a non-free radical process, which is simple to operate and low in cost, and can effectively help solve environmental problems and can be used for waste.

Description

technical field [0001] The invention relates to the application of a catalyst using waste adsorbent after adsorption-desorption as a raw material in the treatment of high-salt organic wastewater by activating persulfate, and belongs to the technical fields of waste resource utilization and environment and chemistry. Background technique [0002] In recent years, with the development of my country's industrialization process, the industrial water demand has increased rapidly. At the same time, the resulting volume of industrial wastewater has also surged, putting enormous pressure on current wastewater treatment and reuse technologies. Chemical and pharmaceutical production fields produce a large amount of high-salt organic wastewater, which mainly has the following characteristics: (1) high salt content, up to 10%, has a strong inhibitory effect on microbial treatment; (2) high concentration of organic pollutants in wastewater , the composition is complex and affects the bi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/72B01J27/24C02F101/30
CPCC02F1/722B01J27/24C02F2101/30
Inventor 高宝玉潘静文高悦岳钦艳
Owner SHANDONG UNIV
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