Method for treating high-concentration wastewater generated when anisole synthesized from methyl sodium sulfate waste residues
A technology of high-concentration wastewater and sodium methosulfate, applied in natural water treatment, multi-stage water treatment, water/sewage treatment and other directions, can solve problems such as wastewater pollution, achieve high treatment efficiency, reduce environmental protection treatment costs, and simple process Effect
Active Publication Date: 2020-11-27
ZHEJIANG DAYANG BIOTECH GROUP
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Problems solved by technology
[0010] The problem to be solved by the present invention is to provide a treatment method for high-concentration wastewater produced by using sodium methyl sulfate waste residue to synthesize anisole. This method can not only solve the pollution problem of wastewater, but also recycle phenol to achieve economic and environmental benefits. double profit
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Embodiment 1
[0057] Embodiment 1, a kind of high-concentration wastewater treatment method that utilizes sodium methyl sulfate waste residue to synthesize anisole to produce, carries out following steps successively:
[0058] 1), take 30 liters of high-concentration wastewater I produced by using sodium methyl sulfate waste residue to synthesize anisole, adjust the pH to 3.0 with sulfuric acid, and filter to remove mechanical impurities and other foreign matter, and obtain 30 liters of acid-adjusted wastewater II , adjust the pH and consume a total of about 5.6g of 98% sulfuric acid;
[0059] The quality indicators of high-concentration wastewater I are as follows: COD is 56000mg / L, pH=4.32, phenol is 3600mg / L, anisole is 1500mg / L, tars are 6800mg / L, sodium sulfate is 3600mg / L, sodium methylsulfate It is 12g / L, and the appearance is dark brown irritating liquid.
[0060] 2) The 30 liters of acid-adjusted waste water II obtained in step 1) is circulated and adsorbed through a macroporous a...
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Abstract
The invention discloses a treatment method of high-concentration wastewater generated during synthesis of anisole from sodium methyl sulfate waste residues, sequentially comprising the following stepsof: regulating the pH value of high-concentration wastewater I to 3-4, and filtering to obtain acid-regulated wastewater II; adsorbing the acid-adjusted wastewater II through a macroporous adsorptionresin bed to obtain adsorbed wastewater III; carrying out desorption and elution on the macroporous adsorption resin after adsorption by using an organic solvent, and then washing the macroporous adsorption resin by using acid-adjusted wastewater II to respectively obtain a resin desorption solution and resin regeneration washing water; rectifying the resin desorption solution through the rectifying still to respectively obtain an organic solvent, water and rectifying still bottom residual liquid I; carrying out reduced pressure distillation on the residual liquid I at the bottom of the rectifying still to respectively obtain a mixture of phenol and anisole and a distillation residual liquid II; the method not only can solve the problem of wastewater pollution, but also can recover phenol, and realizes economic and environmental protection benefits.
Description
technical field [0001] The invention belongs to the fields of fine chemical industry and environmental protection, and relates to a resource comprehensive utilization technology of synthetic waste of fine pharmaceutical intermediates, in particular to a treatment method for high-concentration waste water produced when anisole is synthesized from sodium methyl sulfate waste residue. Background technique [0002] Anisole, also known as anisole, anisole, methoxybenzene, phenylmethyl ether, methyl phenyl ether, is a colorless liquid with an aromatic smell, melting point -37.3°C, boiling point 153.8°C. Anisole is widely used in the preparation of many floral flavors, especially gardenia, lilac, and sunflower flavors. It is also used as an antioxidant in beer, and is also a raw material for the synthesis of ethylene polymer UV stabilizers and enteric insecticides. It is also commonly used as a solvent in organic chemistry. [0003] U.S. Patent No. 2490842 discloses a preparation ...
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IPC IPC(8): C02F9/10C07C37/82C07C37/74C07C39/04C07C41/36C07C41/42C07C43/205C02F103/36
CPCC02F9/00C07C37/82C07C37/74C07C41/36C07C41/42C02F2209/08C02F2103/36C02F1/66C02F1/001C02F1/285C02F1/04C02F2301/08C07C39/04C07C43/205
Inventor 王国平王丽佳徐旭平张昌盛兰金林徐旭辉吴荣
Owner ZHEJIANG DAYANG BIOTECH GROUP
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