SU859320A1 - Method of purifying cyan-containing and chromium-containing waste water of galvanic industry - Google Patents

Method of purifying cyan-containing and chromium-containing waste water of galvanic industry Download PDF

Info

Publication number
SU859320A1
SU859320A1 SU792798081A SU2798081A SU859320A1 SU 859320 A1 SU859320 A1 SU 859320A1 SU 792798081 A SU792798081 A SU 792798081A SU 2798081 A SU2798081 A SU 2798081A SU 859320 A1 SU859320 A1 SU 859320A1
Authority
SU
USSR - Soviet Union
Prior art keywords
chromium
waste water
purifying
cyan
catalyst
Prior art date
Application number
SU792798081A
Other languages
Russian (ru)
Inventor
Федор Иванович Чуриков
Лидия Васильевна Сагадеева
Рашит Белялович Ибрагимов
Ильхамия Ханафеевна Хайрутдинова
Ирина Генриховна Дашкевич
Original Assignee
Казанский инженерно-строительный институт
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Казанский инженерно-строительный институт filed Critical Казанский инженерно-строительный институт
Priority to SU792798081A priority Critical patent/SU859320A1/en
Application granted granted Critical
Publication of SU859320A1 publication Critical patent/SU859320A1/en

Links

Landscapes

  • Removal Of Specific Substances (AREA)

Description

II

Изобретеиие относитс  к очистке сточилх вод, содержапих циаииды и шестивалентный хром, и может быть применено дл  очистки сточных вод гальванического производства.The invention relates to the treatment of waste water, cyaide content and hexavalent chromium, and can be applied to the purification of wastewater from electroplating.

Известен способ очистки вод, содержащих цианиды и ионы хрома,, заключающийс  в том, что сточную воду обрабатывают серной кислотой, аэрируют с целью отдувки образовавшейс  сишльной кислоты, окис л ют синильнук сислоту при 800 с, добавл ют -сульфит натри  дл  восстановлени  шестивалентного хрома до трехвалентного и осаждают трехг валентной хром известью ГОA known method of purifying waters containing cyanides and chromium ions, which consists in treating waste water with sulfuric acid, aerating the resulting acid, removes sulphurous acid, oxidizes blueberry acid at 800 s, adds sodium sulfate to reduce hexavalent chromium to trivalent and precipitated by threeg valent chrome lime GO

Heдocтaткa вl указанного способа  вл ютс  сложна  технологи  очистки, состо ща  из нескольких ступеней, и большой расход реагентов,The waste of this method is a complex purification process consisting of several steps and a high consumption of reagents,

Известен также способ очистки хром- и циансодержащих сточных вод, в котором цианиды непосредственно окисл ютс  шестивапентным хромомThere is also a known method for purifying chromium and cyanogen-containing wastewater, in which cyanides are directly oxidized with six per cent chromium.

в присутствии катализатора - двух валентной меди. В этом способе сточале воды,содержащие хром и цнашды, перемешивают в резервуаре-реакторе вместе с катализатором - медным купоросом. рН раствора поддерживают в пределах 4,0-5,0. После снижени  концентращш цианидов в воду ввод т серную кислоту и двуокись серы дл  восстаиовлени  конов шестивалеитноto го хрома до трехвалентного. Далее смесь нейтрализуют щелочью, в осадок выпадает гидроокись трехвалентного хран  и больша  часть оксамнда Г2.in the presence of a catalyst - two valence copper. In this method, water containing chromium and chunks is mixed in the tank reactor with a copper sulphate catalyst. The pH of the solution is kept between 4.0 and 5.0. After the cyanide concentrate is reduced, sulfuric acid and sulfur dioxide are introduced into water to reduce the hexavalent chromium to trivalent chromium. The mixture is then neutralized with alkali, trivalent stored hydroxide precipitates and most of the oxamnd G2 precipitates.

1515

Недостатками данного способа  вл ютс  высока  стоимость очистки из-за большого расхода медного купороса и загр знение воды после очистки ионами меди.The disadvantages of this method are the high cost of cleaning due to the high consumption of copper sulphate and water pollution after cleaning with copper ions.

Цель изобретени  - сш жение стоимости очистки.The purpose of the invention is to reduce the cost of cleaning.

Поставленна  цель достигаетс  тем, что в способе очистки цианThe goal is achieved by the fact that in the method of cleaning cyan

Claims (2)

Формула изобретенияClaim 1. Способ очистки циансодержащих и хромсодержащих сточных вод гальванического производства, включающий оксиление цианидов шестивалентным1. The method of purification of cyanide and chromium-containing wastewater galvanic production, including the oxidation of cyanide hexavalent 35 хромом в присутствии катализатора в кислой среде, отличающийс я тем, что, с целью снижения стоимости очистки, в качестве катализатора используют сточные вода галь40 ванического производства.35 chromium in the presence of a catalyst in an acidic environment, characterized in that, in order to reduce the cost of purification, wastewater gal 40 is used as a catalyst. 2. Способ поп.1, отличающийся тем, что сточные воды содержат или ионы цинка, или железа, или кобальта, или кадмия, или нике- 45 Ля, или их смеси с концентрацией не ниже 8-10 мг/л.2. The method pop.1, characterized in that the waste water contains or zinc ions or iron, or cobalt, or cadmium, or nickel April 5 A I, or mixtures thereof at a concentration not lower than 8.10 mg / l.
SU792798081A 1979-07-18 1979-07-18 Method of purifying cyan-containing and chromium-containing waste water of galvanic industry SU859320A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU792798081A SU859320A1 (en) 1979-07-18 1979-07-18 Method of purifying cyan-containing and chromium-containing waste water of galvanic industry

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU792798081A SU859320A1 (en) 1979-07-18 1979-07-18 Method of purifying cyan-containing and chromium-containing waste water of galvanic industry

Publications (1)

Publication Number Publication Date
SU859320A1 true SU859320A1 (en) 1981-08-30

Family

ID=20841407

Family Applications (1)

Application Number Title Priority Date Filing Date
SU792798081A SU859320A1 (en) 1979-07-18 1979-07-18 Method of purifying cyan-containing and chromium-containing waste water of galvanic industry

Country Status (1)

Country Link
SU (1) SU859320A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5015396A (en) * 1990-09-11 1991-05-14 The Boc Group, Inc. Removal of cyanide from aqueous streams

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5015396A (en) * 1990-09-11 1991-05-14 The Boc Group, Inc. Removal of cyanide from aqueous streams

Similar Documents

Publication Publication Date Title
US3186942A (en) Oxidation of sulphides in aqueous solutions
US4569769A (en) Wastewater treatment
US3755156A (en) Method for biochemical treatment of industrial waste water
CN112607893A (en) Plating solution wastewater treatment method for nickel plating of plated part
CZ291141B6 (en) Method for anaerobic removal of a sulfur compound from waste water
US3819051A (en) Process for treating wastes containing chromates and/or complex iron cyanides
CN1189462A (en) Tech. for treatment of waste water containing cyanogen by hydrogen peroxide oxidation process
CN107188292A (en) A kind of utilization silver extraction by cyanidation waste residue purifies the method containing arsenic waste solution
SU859320A1 (en) Method of purifying cyan-containing and chromium-containing waste water of galvanic industry
CN104787960A (en) Treatment technology and treatment system of leather waste water
US3371034A (en) Process for removal of chromium in industrial waste waters
JPH05169071A (en) Treatment of cyanide containing waste water
CN209872682U (en) High-sulfur wastewater anaerobic treatment system
JPH0521636B2 (en)
CN104478167A (en) Treatment process and treatment system of chromium-containing wastewater in leather wastewater
CN104478166A (en) Treatment process and treatment system of sulfide-containing wastewater in leather wastewater
CN213388084U (en) Organic wastewater treatment system pollutes of sour production of H
SU812752A1 (en) Method of waste water purification from chromium
SU389691A1 (en) Method of purification of waste water from arsenic
US1715877A (en) Process for purifying polluted liquids and industrial waste
RU2025467C1 (en) Process for purifying chromium-containing sewage
SU881005A1 (en) Method of galvanic waste purification
JPH0278487A (en) Continuous treatment of waste water
SU704912A1 (en) Method of waste water purification from chromium
KR0140094B1 (en) Process for preparation of active sulphone coal