A treatment method for platinum-containing wastewater
A treatment method and waste water technology, which is applied in the field of chemical mass transfer and separation, can solve the problems of difficult elution of template molecules, reduce the adsorption capacity and adsorption rate of imprinted blend membranes, and improve environmental protection and economic benefits. The method is simple, Strong purification effect
Active Publication Date: 2020-11-03
HUNAN UNIV OF SCI & TECH
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Problems solved by technology
However, in the imprinted blend membranes prepared in the prior art, template molecules (ions) are usually embedded too deeply by the membrane matrix and are not easy to elute, which will greatly reduce the adsorption capacity and adsorption rate of the imprinted blend membranes.
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[0062] Before use, methyl methacrylate is passed through a flash chromatography column packed with basic alumina to remove the polymerization inhibitor, and sealed at 2°C and stored in the dark; azobisisobutyronitrile is reconstituted in absolute ethanol before use Crystallize three times and store in a sealed place at 2°C and protected from light; before use, the polyvinylidene fluoride should be dried in vacuum at 90°C for 24h to remove water.
[0063] Synthesis of trithioester: RSH (n-dodecanethiol) (48mL, 40.38g, 0.2mol), acetone (160mL) and methyl trioctylammonium chloride (phase transfer agent) (3.6mL, 3.2g, 0.008mol) was mixed into a 1L three-necked flask, cooled to 10°C and protected with nitrogen. Slowly add 50% NaOH solution (16.7g, time over 20min) dropwise, continue to stir for 15min, then add dissolved CS 2 (12mL, 15.2g, 0.2mol) in acetone (25mL, 20g, 0.3mol) solution, for more than 20min, after the solution turns red for 10min, add CHCl at a time 3 (24mL, 35.6g, 0.3...
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The invention belongs to the technical field of chemical mass transfer and separation and particularly relates to a treatment method of platinum-bearing wastewater, comprising the steps of (1) settling naturally; (2) treating organic suspended matters; (3) treating high-concentration heavy metals; (4) pumping supernate treated in step (3) to a transfer tank, and adjusting pH; (5) treating with a membrane, to be specific, pumping the wastewater of step (4) to a membrane filtering device to carry out membrane filtering, wherein a membrane component in the membrane filtering device includes Pt(IV) ion imprinting blender membrane; (6) backwashing with a membrane, to be specific, taking out Pt(IV) ions in the step (5) to carry out backwashing, and recycling the Pt(IV) ions. The treatment methodof platinum-bearing wastewater has the advantages that the treatment method is simple and has great purifying capacity, target platinum is recycled when harmful matters in the wastewater are effectively removed, environmental benefit and economic benefit are significantly improved.
Description
Technical field [0001] The invention belongs to the technical field of chemical mass transfer and separation, and specifically relates to a treatment method of platinum-containing wastewater. Background technique [0002] With the process of industrialization and urbanization, a large amount of waste water is produced. The main source is industrial waste water and urban sewage. Industrial waste water mainly refers to the waste water, sewage and waste liquid generated in the industrial production process, which contains the industrial production lost with water. Materials, intermediates and products, and pollutants generated during the production process. With the rapid development of industry, the types and quantities of waste water have increased rapidly, and the pollution of water bodies has become increasingly widespread and serious, threatening human health and safety. [0003] At present, there are many wastewater treatment methods, which can be divided into four categories a...
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Login to View More IPC IPC(8): C02F9/04C02F9/14B01J20/26B01J20/28B01J20/30C02F101/20C02F101/30
CPCB01J20/268B01J20/28033C02F1/285C02F1/62C02F1/66C02F3/28C02F9/00C02F2001/007C02F2101/20C02F2101/30C02F2303/14
Inventor 曾坚贤吕超强刘国清曾令玮董志辉曾杰辉马溢昌
Owner HUNAN UNIV OF SCI & TECH