SU785206A1 - Method of waste water purification from aromatic amines - Google Patents
Method of waste water purification from aromatic amines Download PDFInfo
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- SU785206A1 SU785206A1 SU792747381A SU2747381A SU785206A1 SU 785206 A1 SU785206 A1 SU 785206A1 SU 792747381 A SU792747381 A SU 792747381A SU 2747381 A SU2747381 A SU 2747381A SU 785206 A1 SU785206 A1 SU 785206A1
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- aromatic amines
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- water purification
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(54) СПОСОБ ОЧИСТКИ СТОЧНЫХ ВОД ОТ АРОМАТИЧЕСКИХ АМИНОВ(54) METHOD FOR CLEANING WASTE WATER FROM AROMATIC AMINES
1one
Изобретение относитс к способам очистки сточных вод от ароматических аминов и может быть использовано при очистке промышленных стоков предпри тий анилино-красочной, коксохимичес- 5 кой промьплленности, а также стоков фабрик химчистки и крашени одежды.The invention relates to methods for treating wastewater from aromatic amines and can be used in the treatment of industrial effluents of aniline-colorful, coke-chemical plants, as well as drains of dry-cleaning factories and dyeing.
Известен способ очистки .сточных вод отаминов сорбции на природных цеолитах .10A known method of purification. Wastewater sorption otamines on natural zeolites .10
Недостатком известного способа вл етс одноразовое использование сорбента.The disadvantage of this method is the single use of the sorbent.
Наиболее близким к предлагаемому изобретению по технической сущности 5 и достигаемому результату вл етс способ очистки сточных вод от орг нических аминов путем их обработки полимерным материалом 2. The closest to the proposed invention to the technical essence 5 and the achieved result is a method of purification of wastewater from organic amines by treating them with a polymeric material 2.
Поизвестному способу степень 2Ц очистки составл ет 70-90%.According to a known method, the 2C purification degree is 70-90%.
Целью изобретени вл етс повыаеirte степени очистки.The aim of the invention is to improve the degree of purification.
Поставленна цель достигаетс тем, что сточные воды очищгцот от органи- 25 ческих .роединений путем обработки их полимерным материалом, при этом в качестве полимерного материала берут поликонденсат гидрохинона с фор;мальдегидом , предв арительно окислен- 30This goal is achieved by the fact that wastewater is purified from organic compounds by treating them with a polymeric material, while taking polycondensate of hydroquinone with form; maldehyde, preliminarily oxidized, as a polymeric material.
ный 12-15%-н,ой азотной кислотой, и обработку ведут при рН 7,5-8,0 в течение 30-6.0 мин.12-15% oh, nitric acid, and the treatment is carried out at pH 7.5-8.0 for 30-6.0 minutes.
Отличительным признаком способа вл етс то, что в качестве полимерного материала берут поликонденеат гидрохинона с формальдегидом, предварительно окисленный 12-15%-ной азотной кислотой.A distinctive feature of the method is that hydroquinone polycondeneate with formaldehyde, previously oxidized with 12-15% nitric acid, is taken as the polymer material.
Другое отличие состоит в том, что обработку ведут при рН 7,5-8,0 в течение 30-60 Мин.Another difference is that the treatment is carried out at a pH of 7.5-8.0 for 30-60 Min.
Дл очистки сточных вод по предложенному сйособу сорбент готов т следующим образом.For wastewater treatment according to the proposed method, a sorbent is prepared as follows.
В реактор, снабженный мешалкой и термометром, погруженными в реакционную смесь,загружают 9,1 моль гидрохинона , 31 моль формальдегида (в виде 37%-ного водного раствора) и каталитическое количество сол ной кислоты (0,82 моль).Реакционную смесь нагревают в течение 3-4 час до начала полимеризации при 80-90С.После охлаждени , промывки холодной водой полимер измельчают и обрабатывают 12-15%-ным раствором азотной кислоты (10 л) в течение 1 час. Затем промывают водой, высушивёиот и используют в качестве сорбента .9.1 mol of hydroquinone, 31 mol of formaldehyde (in the form of a 37% aqueous solution) and a catalytic amount of hydrochloric acid (0.82 mol) are loaded into a reactor equipped with a stirrer and a thermometer immersed in the reaction mixture. The reaction mixture is heated to 3-4 hours before the start of polymerization at 80-90 ° C. After cooling, washing with cold water, the polymer is ground and treated with 12-15% solution of nitric acid (10 l) for 1 hour. Then it is washed with water, dried and used as a sorbent.
хгр мер . 1 г полимера пометцают в колбу и заливают 1000 мл раствора (рН-7,5) с концентрацией cfc -нафтиламина 2«10 М. Содержимое колбы перемеогавают it убыль ароматических аминов контролируют фотоколориметрически по реакции с РЬОп. Степень очистки через 30 мин составл ет 72% через 60 мин - 100%,chr measures 1 g of polymer is put into a flask and pour 1000 ml of a solution (pH-7.5) with a concentration of cfc naphthylamine 2 10 10 M. The contents of the flask alternate with it; photothermimetry is monitored by reaction with PbOn. The degree of purification after 30 minutes is 72% after 60 minutes - 100%,
Предлагаемый способ обеспечивает высокую степень очистки сточных вод от ароматических аминов, за счет химического взаимодействи амино с сорбентом и позвол ет повторио использовать образующиес с1минополихиноны дл сорбции хинонов, BCTjpeчающихс в промстоках.The proposed method provides a high degree of purification of wastewater from aromatic amines, due to the chemical interaction of amino with the sorbent and allows repeated use of the formed aminopolyquinones for sorption of quinones BCTjpered in promstocks.
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SU792747381A SU785206A1 (en) | 1979-03-30 | 1979-03-30 | Method of waste water purification from aromatic amines |
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SU792747381A SU785206A1 (en) | 1979-03-30 | 1979-03-30 | Method of waste water purification from aromatic amines |
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SU785206A1 true SU785206A1 (en) | 1980-12-07 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101665302B (en) * | 2009-09-17 | 2011-10-05 | 宁波万华聚氨酯有限公司 | Processing method of effluent brine produced in MDI production process |
WO2021097819A1 (en) * | 2019-11-22 | 2021-05-27 | 万华化学集团股份有限公司 | Superhydrophobic membrane and preparation method therefor, and method for concentrating and recycling mdi waste brine |
-
1979
- 1979-03-30 SU SU792747381A patent/SU785206A1/en active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101665302B (en) * | 2009-09-17 | 2011-10-05 | 宁波万华聚氨酯有限公司 | Processing method of effluent brine produced in MDI production process |
WO2021097819A1 (en) * | 2019-11-22 | 2021-05-27 | 万华化学集团股份有限公司 | Superhydrophobic membrane and preparation method therefor, and method for concentrating and recycling mdi waste brine |
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