RU2075453C1 - Method of cleaning waste water from petroleum derivatives - Google Patents

Method of cleaning waste water from petroleum derivatives Download PDF

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Publication number
RU2075453C1
RU2075453C1 RU93019137A RU93019137A RU2075453C1 RU 2075453 C1 RU2075453 C1 RU 2075453C1 RU 93019137 A RU93019137 A RU 93019137A RU 93019137 A RU93019137 A RU 93019137A RU 2075453 C1 RU2075453 C1 RU 2075453C1
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Russia
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waste water
purification
cleaning waste
chromium
wastewater
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RU93019137A
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Russian (ru)
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RU93019137A (en
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Александр Михайлович Силантьев
Сергей Александрович Силантьев
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Александр Михайлович Силантьев
Сергей Александрович Силантьев
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  • Water Treatment By Electricity Or Magnetism (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

FIELD: waste water purification. SUBSTANCE: waste water originated from machine works, chemical industry, and metallurgy industries is treated in magnetic field with acidic residue, which is waste from electrochemical purification of chromium- containing drains, at pH 6.0-7.0. As a result, content of oil is reduced to 0-1 mg/l. EFFECT: enhanced efficiency of cleaning. 2 cl

Description

Изобретение относится к способам разрушения смеси отработанных маслоэмульсионных промышленных стоков (ОМЭС) и содового раствора, используемых в качестве смазочно-охлаждающих жидкостей при обработке металлов в химической промышленности, и может найти применение при очистке сточных вод в машиностроительной, химической и металлургической промышленностях. The invention relates to methods for destroying a mixture of spent oil-emulsion industrial wastewater (OMES) and soda solution used as cutting fluids in the processing of metals in the chemical industry, and can be used in wastewater treatment in the engineering, chemical and metallurgical industries.

Задачей изобретения является повышение степени очистки и нейтрализации сточных вод от маслоэмульсий, кислот и щелочных сред. Для осуществления способа сточные воды обрабатывают растворенными в кислоте отходами хромсодержащих стоков при pH 6-7. Процесс разложения ОМЭС промывными кислыми водами pH 3 при pH 4-5 в присутствии магнитных полей высокой энергии. Способ позволяет повысить степень очистки и снизить содержание нефтепродуктов в воде до 0-2 мг/л, с эффективностью очистки 99,999%
Пример 1.
The objective of the invention is to increase the degree of purification and neutralization of wastewater from oil emulsions, acids and alkaline environments. To implement the method, the wastewater is treated with wastes of chromium-containing effluents dissolved in acid at a pH of 6-7. The process of decomposition of OMES by washing with acidic waters pH 3 at pH 4-5 in the presence of high energy magnetic fields. The method allows to increase the degree of purification and reduce the oil content in water to 0-2 mg / l, with a purification efficiency of 99.999%
Example 1

Сточную воду с отработанной эмульсией, приготовленной из эмульсола ЭГТ и кальцинированной соды, с содержанием нефтепродуктов 3000 мг/л, величиной ХПК 12600 мг/л и pH 12 обрабатывают коагулянтом-сернокислым раствором осадка, являющегося отходом электрохимической очистки хромсодержащих стоков до величины pH 4-5. Смесь тщательно перемешивают, отстаивают в течение 1 часа и отделяют осадок. Содержание нефтепродуктов в очищенной воде 0-2 мг/л, эффект очистки по нефтепродуктам 99,999% величина ХПК 1234 мг/л, эффект очистки по ХПК 98,5. Wastewater with spent emulsion prepared from EGT emulsol and soda ash with an oil content of 3000 mg / L, COD value of 12,600 mg / L and pH 12 is treated with a coagulant-sulphate solution of sludge, which is a waste product of the electrochemical treatment of chromium-containing effluents to pH 4-5 . The mixture is thoroughly mixed, settled for 1 hour and the precipitate is separated. The content of oil products in purified water is 0-2 mg / l, the cleaning effect for oil products is 99.999%, the COD value is 1234 mg / l, the cleaning effect for COD is 98.5.

Коагулянт получают из осадка, образованного после электрохимической обработки воды, взятой из промывных ванн гальванического цеха. Исходная концентрация хрома VI в промывной ванне 250 мг/л. Указанный сток обрабатывают в электрокоагуляторе с пластинчатыми электродами из магнитомягкого железа до полного восстановления хрома VI в хром III, затем направляют в отстойник и отвалы. The coagulant is obtained from the precipitate formed after electrochemical treatment of water taken from the washing baths of the galvanic shop. The initial concentration of chromium VI in the wash bath is 250 mg / L. The specified drain is treated in an electrocoagulator with plate electrodes made of soft magnetic iron until the chromium VI is completely reduced to chromium III, then it is sent to the sump and dumps.

Коагулянты Fe3O4 магнетит получали из осадка ОМЭС прокатного производства ЦХНТС. С введением магнитных полей в процесс ОМЭС потребность в приготовлении и использовании магнетита отпала, а также очистка ОМЭС по первому примеру.Coagulants Fe 3 O 4 magnetite were obtained from the precipitate OMES rolling mill CHNTS. With the introduction of magnetic fields in the OMES process, the need for the preparation and use of magnetite disappeared, as well as the purification of OMES according to the first example.

Магнитные поля высокой энергии ускоряют магнетохимические процессы, изменяя pH до 3 единиц, сокращая расход химреагентов более 50% В сильных магнитных полях взвеси в ОМЭС укрупняются, сохраняя магнитную память, значительно ускоряя осветление сточных вод. В магнитных полях высокой энергии разложение ОМЭС прокатного металлургического производства происходит при pH 4-5 на 3 слоя: верхний масло, средний осветленная вода, нижний шлам. Причем, практически разложение ОМЭС происходит на 99,999% High-energy magnetic fields accelerate magnetochemical processes by changing the pH to 3 units, reducing the consumption of chemicals by more than 50%. In strong magnetic fields, suspensions in OMES are aggregated, preserving magnetic memory, significantly accelerating the clarification of wastewater. In high-energy magnetic fields, the decomposition of OMES of rolling metallurgical production occurs at pH 4-5 into 3 layers: upper oil, medium clarified water, lower sludge. Moreover, practically the decomposition of OMES occurs at 99.999%

Claims (2)

1. Способ очистки сточных вод от нефтепродуктов путем введения отхода электрохимической очистки хромсодержащих стоков, растворенного в кислоте, регулирования pH сточных вод и отделения образующегося осадка, отличающийся тем, что очистку ведут в магнитном поле при pH 6 7. 1. The method of purification of wastewater from petroleum products by introducing a waste electrochemical purification of chromium-containing effluents dissolved in acid, adjusting the pH of the wastewater and separating the precipitate, characterized in that the purification is carried out in a magnetic field at pH 6 7. 2. Способ по п. 1, отличающийся тем, что напряженность магнитного поля составляет 1 5 кЭ. 2. The method according to p. 1, characterized in that the magnetic field is 1 5 kOe.
RU93019137A 1993-04-12 1993-04-12 Method of cleaning waste water from petroleum derivatives RU2075453C1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003008346A1 (en) * 2001-07-16 2003-01-30 Igor Nikolaevich Vershinin Method for neutralising industrial wastes containing petroleum products and organic components

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Авторское свидетельство СССР N 1490094, кл. C 02F 1/58, 1988. *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003008346A1 (en) * 2001-07-16 2003-01-30 Igor Nikolaevich Vershinin Method for neutralising industrial wastes containing petroleum products and organic components

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