SU1491816A1 - Method of cleaning waste water from hexavalent chromium - Google Patents

Method of cleaning waste water from hexavalent chromium Download PDF

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Publication number
SU1491816A1
SU1491816A1 SU874241323A SU4241323A SU1491816A1 SU 1491816 A1 SU1491816 A1 SU 1491816A1 SU 874241323 A SU874241323 A SU 874241323A SU 4241323 A SU4241323 A SU 4241323A SU 1491816 A1 SU1491816 A1 SU 1491816A1
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SU
USSR - Soviet Union
Prior art keywords
chromium
waste water
hexavalent chromium
cleaning waste
reducing agent
Prior art date
Application number
SU874241323A
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Russian (ru)
Inventor
Марат Леонидович Поляков
Елена Маратовна Полякова
Ольга Маратовна Самсонова
Original Assignee
Бийский филиал Алтайского политехнического института им.И.И.Ползунова
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Application filed by Бийский филиал Алтайского политехнического института им.И.И.Ползунова filed Critical Бийский филиал Алтайского политехнического института им.И.И.Ползунова
Priority to SU874241323A priority Critical patent/SU1491816A1/en
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Publication of SU1491816A1 publication Critical patent/SU1491816A1/en

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  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Removal Of Specific Substances (AREA)

Abstract

Изобретение относитс  к области очистки сточных вод от хрома, может быть использовано в химической, металлургической и машиностроительной отрасл х промышленности и позвол ет удешевить процесс при сохранении аналогичной степени очистки. Дл  осуществлени  способа сточные воды, содержащие хром /1У/ обрабатывают восстановителем-хлоридом серы. После 5-6-минутного перемешивани  образующийс  осадок отдел ют. В очищенной воде хром не обнаружен.The invention relates to the field of chromium wastewater treatment, can be used in the chemical, metallurgical and engineering industries and allows the process to become cheaper while maintaining a similar degree of purification. For carrying out the process, the waste water containing chromium (IV) is treated with a sulfur chloride reducing agent. After stirring for 5-6 minutes, the precipitate formed is separated. Chromium is not detected in purified water.

Description

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СОWITH

Изобретение относитс  к очистке сточных вод от хрома и может быть использовано в химической, металлургической и машиностроительной отрасл х промышленности.This invention relates to the treatment of waste water from chromium and can be used in the chemical, metallurgical and engineering industries.

Целью изобретени   вл етс  удешевление лроцесса при сохранении аналогичной степени очистки.The aim of the invention is to reduce the process cost while maintaining a similar degree of purification.

П р и м е р. Из 3-суточных проб, вз тьк в объеме 25 л кажда  готов т 75 л смешанного раствора состава, мг/л: СГ(, 53; Сг 51, рН 5,2. Хром в растворе представлен в форме 18%, 2%, 80% от общего содержани .PRI me R. From 3-day samples, take in a volume of 25 liters each and prepare 75 liters of a mixed solution of composition, mg / l: SG (, 53; Cr 51, pH 5.2. Chromium in solution is presented in the form of 18%, 2%, 80% of the total.

Методика проведени  опытов следующа . Аликвоту раствора 0,5 л помещают в стакан емкостью 1 л, установленный на электромагнитной мешалке . В стакан дозируют расчетную порцию хлорида серы Она составл ет 100120% от стехиометрически необходимого по реакции:Experimental methods are as follows. An aliquot of a 0.5 l solution is placed in a 1 liter beaker mounted on an electromagnetic stirrer. A calculated portion of sulfuric chloride is dispensed into the glass. It is 100,120% of the stoichiometrically required by the reaction:

+3SiiCl5+16H50- 10Сг(ОН)5 + +6NaCl+6Na Cr04+2NaOH или 0,75-0,85 т на 1 т восстанавливаемого хрома. + 3SiiCl5 + 16H50-10Сг (ОН) 5 + + 6NaCl + 6Na Cr04 + 2NaOH or 0.75-0.85 tons per 1 ton of chromium to be reduced.

После 4-6 мин перемешивани  отдел ют образующийс  осадок, а воду анализируют . В очищенной воде хром не обнаружен.After 4-6 minutes of stirring, the precipitate formed is separated and the water is analyzed. Chromium is not detected in purified water.

Параллельно осуществл ют очистку вод по известному способу с использованием в качестве восстановител  сернистого газа. Б очищенной воде хром не обнаружен.In parallel, the purification of water is carried out by a known method using sulfur dioxide gas as a reducing agent. Chromium is not detected in purified water.

Удешевление процесса достигаетс  за счет меньшего расхода восстановител  - хлорида серы и исключени  необходимого приема введени  щелочного реагента дл  осаждени  гидрок- сида хрома.The process is cheaper due to the lower consumption of the reducing agent — sulfur chloride and the exclusion of the necessary administration of the introduction of an alkaline reagent to precipitate chromium hydroxide.

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Claims (1)

Формула изобретени ма, отличающийс  тем, что,Invention formula, characterized in that, Способ очистки сточных вод от ше-с целью удешевлени  процесса при состивалентного хрома, включающий об-хранении аналогичной степени очистки,The method of sewage treatment from the above in order to reduce the cost of the process with comparable chromium, including the storage of a similar degree of purification, работку восстановителем и отделениев качестве восстановител  используютprocessing by reducing agent and separating as reducing agent is used осадка гидроксида трехвалентного хро-хлорид серы.precipitate of trivalent hydroxide sulfur chloride sulfur.
SU874241323A 1987-03-16 1987-03-16 Method of cleaning waste water from hexavalent chromium SU1491816A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU874241323A SU1491816A1 (en) 1987-03-16 1987-03-16 Method of cleaning waste water from hexavalent chromium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU874241323A SU1491816A1 (en) 1987-03-16 1987-03-16 Method of cleaning waste water from hexavalent chromium

Publications (1)

Publication Number Publication Date
SU1491816A1 true SU1491816A1 (en) 1989-07-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU874241323A SU1491816A1 (en) 1987-03-16 1987-03-16 Method of cleaning waste water from hexavalent chromium

Country Status (1)

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SU (1) SU1491816A1 (en)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Mracek William, А. Processing chromate wastes in tower blowdown.- Ind. Water Eng. 1969, 6, № 12, 51-53. *

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