Quartz sand-modified sulfydryl-loaded material for removing mercury from sewage and preparation method thereof

A quartz sand and sulfhydryl technology, applied in water/sewage treatment, chemical instruments and methods, adsorbed water/sewage treatment, etc., can solve the problems of excessive mercury content, inconvenient management, complex graphene derivative method technology, etc., and achieve saturation. The effect of improved adsorption capacity and convenient application

Inactive Publication Date: 2019-03-29
SHENYANG JIANZHU UNIVERSITY
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Problems solved by technology

[0004] Conventional methods for treating mercury-containing wastewater in sewage treatment plants include: reduction method, vulcanization method, ion exchange method, adsorption method, etc. These conventional treatment methods have a good removal effect on mercury removal, but the mercury content in the treated water still exceeded
The chelating agent method and the graphene derivative method are technically complex, difficult to operate, and inconvenient to manage

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  • Quartz sand-modified sulfydryl-loaded material for removing mercury from sewage and preparation method thereof

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Embodiment Construction

[0021] A modified quartz sand-loaded mercapto material for mercury removal in sewage, which is composed of quartz sand and functional group mercapto compound. The quartz sand is first modified with hydrochloric acid and ethanol solution, and then treated with thioglycolic acid through cosolvent acetic anhydride and sulfuric acid. react, and load the functional group mercapto on the surface of the quartz sand.

[0022] Its preparation process is as follows:

[0023] a. Put the quartz sand in a 30-mesh stainless steel sieve to sieve out the 0.75-0.83mm quartz sand filter material, then boil it with pure water for 60 minutes, then wash it repeatedly with pure water until it is no longer turbid, and finally dry it in a vacuum at 105°C Dry in the oven for 12 hours, and take out the quartz sand after cooling to constant weight;

[0024] b. Soak the quartz sand obtained in step a with 1mol / L hydrochloric acid for 24 hours, then put it into an ethanol solution and stir it magneticall...

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Abstract

The invention relates to the field of sewage treatment and specifically relates to a quartz sand-modified sulfydryl-loaded material for removing mercury from sewage and a preparation method thereof. According to the technical scheme of the invention, the quartz sand-modified sulfydryl-loaded material for removing mercury from sewage is formed by compounding quartz sand and functional group sulfydryl; the quartz sand is modified with hydrochloric acid and ethanol solution, and then reacts with mercaptoacetic acid under the existence of cosolvents acetic anhydride and sulfuric acid, so as to load the functional group sulfydryl on the surface of quartz sand; the saturation adsorption capacity of the quartz sand-modified sulfydryl-loaded material for target pollutants is above 85%. The quartzsand-modified sulfydryl-loaded material provided by the invention is effective in reducing concentration of mercury in tail water of sewage plants and has a certain control function for pollution andharm of mercury-containing effluent, so as to relieve the harm of heavy metal mercury to humans, animals and plants.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a modified quartz sand-loaded sulfhydryl material for mercury removal in sewage and a preparation method thereof. Background technique [0002] Since the founding of the People's Republic of China, my country's industrial industry has developed rapidly, so my country has also become a large industrial wastewater discharge country. The main characteristics of industrial wastewater include: large discharge, wide range of pollution, large changes in water quality, high content of heavy metals, strong toxicity of pollutants, and great harm. . As far as industrial wastewater with high heavy metal content is concerned, the compliance rate of tail water effluent from large and medium-sized sewage treatment plants in my country is relatively low. The principles of heavy metal wastewater treatment in my country are: firstly, the most fundamental thing is to reform the production process so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/30C02F1/28C02F101/20
CPCB01J20/103B01J20/22C02F1/288C02F2101/20
Inventor 董万里刘军傅金祥蒋安娜袁雅姝由昆郭慧宇
Owner SHENYANG JIANZHU UNIVERSITY
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