SU833565A1 - Method of waste water purification from thiosulfate ion - Google Patents
Method of waste water purification from thiosulfate ion Download PDFInfo
- Publication number
- SU833565A1 SU833565A1 SU792773729A SU2773729A SU833565A1 SU 833565 A1 SU833565 A1 SU 833565A1 SU 792773729 A SU792773729 A SU 792773729A SU 2773729 A SU2773729 A SU 2773729A SU 833565 A1 SU833565 A1 SU 833565A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- barium
- ion
- thiosulfate
- waste water
- sulfide
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 8
- DHCDFWKWKRSZHF-UHFFFAOYSA-L thiosulfate(2-) Chemical compound [O-]S([S-])(=O)=O DHCDFWKWKRSZHF-UHFFFAOYSA-L 0.000 title claims description 6
- 238000000746 purification Methods 0.000 title claims description 5
- 229940006280 thiosulfate ion Drugs 0.000 title claims description 5
- 239000002351 wastewater Substances 0.000 title claims description 5
- 229910001422 barium ion Inorganic materials 0.000 claims description 7
- CJDPJFRMHVXWPT-UHFFFAOYSA-N barium sulfide Chemical compound [S-2].[Ba+2] CJDPJFRMHVXWPT-UHFFFAOYSA-N 0.000 claims description 7
- 239000003153 chemical reaction reagent Substances 0.000 claims description 6
- 239000002244 precipitate Substances 0.000 claims description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 5
- 229910052979 sodium sulfide Inorganic materials 0.000 claims description 4
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 claims description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 2
- 235000011152 sodium sulphate Nutrition 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 3
- ONPIOWQPHWNPOQ-UHFFFAOYSA-L barium(2+);dioxido-oxo-sulfanylidene-$l^{6}-sulfane Chemical compound [Ba+2].[O-]S([O-])(=O)=S ONPIOWQPHWNPOQ-UHFFFAOYSA-L 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- -1 sulphide ion Chemical class 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 239000004133 Sodium thiosulphate Substances 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- WUUZKBJEUBFVMV-UHFFFAOYSA-N copper molybdenum Chemical compound [Cu].[Mo] WUUZKBJEUBFVMV-UHFFFAOYSA-N 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 1
- 235000019345 sodium thiosulphate Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
Landscapes
- Removal Of Specific Substances (AREA)
Description
Изобретение относитс к очистке промышленных сточных вод, в частност стоков обогатительных предпри ний и химических производств. Стоки предпри тий, перерабатывающих медно-молибденовые руды, представл ют собой растворы, содержащие значительное количество реагента сульфида натри , и продуктов его раз ложени , например тиосул фата натри Известны способы очистки сточных вод от тиосульфата-иона окислением его кислородом воздуха l или разложением в кислой среде сероводородом 2. Однако эти способы не позвол ют избирательно окисл ть или разлагать тиосульфат, не затрагива сульфидион , что не дает возмолсности исполь зовать растворы, содержащие сульфид натри , в оборотном водоснабжении. Наиболее близким к предлагаемому вл етс способ очистки сточных вод от тиосульфат-иона в присутствии сульфида натри , включающий обработ ку сульфидом бари и отделение обра зовавшегос осадка -.тиосульфата ба ри з. Однако в таком способе, хот он предусматривает очистку стоков от тиосульфа-иона без разложени GyoBf фид-иона вследствие достаточно большой растворимости образующегос при очистке тиосульфата бари , стоки не могут быть очищены до желаемой глубины . Концентраци барийгионов в стоках увеличиваетс , что преп тствует их оборотному использованию. Цель изобретени - повышение степени очистки от тиосульфат-иона. Поставленна цель достигаетс введением сульфида бари в избытке от стехиометрии и введением в раствор, содержащий избыточное количество ионов бари , реагента, образующего с ионами бари труднорастворимое соединение . В качестве реагентов, образующих труднорастворимое соединение с ионами бари , используют сульфат или карбонат натри . Способ осуществл ют следующим образом . В очищаемую сточную воду дозируют сульфид бари в количестве, превыша ющем стехиометрическое. Это приводит к уменьшению растворимости тиосульфата бари и образованию его устойчивого осадка. Избыток барий-иона удал ют обработкой раствора реагентом.The invention relates to the treatment of industrial wastewater, in particular the effluents of enrichment plants and chemical plants. The effluents of enterprises processing copper-molybdenum ores are solutions containing a significant amount of sodium sulfide reagent and decomposition products, such as sodium thiosulphate. Thiosulfate ion waste water is known to be oxidized with oxygen in the air or decomposed in acid hydrogen sulfide 2. However, these methods do not allow the thiosulfate to be selectively oxidized or decomposed without affecting the sulfidion, which does not allow for the use of solutions containing sodium sulfide otno water supply. Closest to the present invention is a method for purifying wastewater from thiosulfate ion in the presence of sodium sulfide, which includes treatment with barium sulphide and separation of the formed precipitate with barium thiosulfate. However, in this way, although it involves cleaning the effluent from thiosulfon-ion without decomposing the GyoBf feed ion due to the sufficiently high solubility of the barium thiosulfate formed during purification, the effluent cannot be purified to the desired depth. The concentration of barygion in the effluent increases, which prevents their circulating use. The purpose of the invention is to increase the degree of purification from thiosulfate ion. This goal is achieved by introducing barium sulphide in excess from stoichiometry and by introducing into the solution containing an excess amount of barium ions a reagent that forms a hardly soluble compound with barium ions. Sulfate or sodium carbonate is used as reagents that form an insoluble compound with barium ions. The method is carried out as follows. Barium sulphide is metered into the purified wastewater in an amount exceeding the stoichiometric amount. This leads to a decrease in the solubility of barium thiosulfate and the formation of its stable precipitate. The excess barium ion is removed by treating the solution with a reagent.
образующим с ионом бари труднорастворимое соединение, например сульфатом или карбонатом натри . При это имеют место следуницие реакцииforming a barium ion with an insoluble compound, such as sulfate or sodium carbonate. When this takes place following reaction
(1)(one)
MajSMajs
BaS -vBaSgO, BaS -vBaSgO,
- Na2S04- BaS04i t Ma-S - Na2S04- BaS04i t Ma-S
(2) NajjCOj- BaCOai -i- ( Jf)(2) NajjCOj- BaCOai-i- (Jf)
Последовательное проведение реакций (1) и (2) или (1) и (2) обеспечивает глубокую очистку от тиосуЛь ,j фат-иона при одновременном восстановлении содержани сульфида йатри .Sequential carrying out reactions (1) and (2) or (1) and (2) provides deep purification from thiosol, j fat-ion while simultaneously reducing the content of yatri sulphide.
Пример 1. Очистка по известному способу.Example 1. Cleaning by a known method.
к 1 л оборотной воды, содержащей 0,9 г сульфид-иона, 4,0 г тиосульфатиона , 0,05 г сульфит-иона и 0,5 г сульфат-иона добавл ют 7 г сульфида бари . Цосле отделени осадка определ ют содержание, компонентов в раствоРв . , ,1 g of recycled water containing 0.9 g of sulphide ion, 4.0 g of thiosulfation, 0.05 g of sulphite ion and 0.5 g of sulphate ion are added 7 g of barium sulphide. The content of the components in solution is determined by separation of the precipitate. ,,
Пример . Очистка по предлагремому способу.An example. Cleaning by the proposed method.
К 1 л оборотной воды того же состава , что и в примере 1, добавл ют 13,1 г сульфида бари . После отделени осадка определ ют содержание компонентов в растворе, затем добавл ют 5,55 г сульфата натри , образовавшийс осадок отдел ют и вновь определ ют содержание компонентов.To 1 liter of circulating water of the same composition as in example 1, 13.1 g of barium sulfide was added. After separating the precipitate, the content of the components in the solution is determined, then 5.55 g of sodium sulfate is added, the precipitate formed is separated and the content of the components is again determined.
Результаты примеров 1 и 2 представлены в таблице. .The results of examples 1 and 2 are presented in the table. .
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU792773729A SU833565A1 (en) | 1979-05-31 | 1979-05-31 | Method of waste water purification from thiosulfate ion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU792773729A SU833565A1 (en) | 1979-05-31 | 1979-05-31 | Method of waste water purification from thiosulfate ion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU833565A1 true SU833565A1 (en) | 1981-05-30 |
Family
ID=20830930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU792773729A SU833565A1 (en) | 1979-05-31 | 1979-05-31 | Method of waste water purification from thiosulfate ion |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU833565A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105905871A (en) * | 2016-07-01 | 2016-08-31 | 马琴 | Preparation method of anhydrous sodium sulfide |
| CN106185838A (en) * | 2016-07-01 | 2016-12-07 | 马琴 | Sodium sulfide preparation method |
-
1979
- 1979-05-31 SU SU792773729A patent/SU833565A1/en active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105905871A (en) * | 2016-07-01 | 2016-08-31 | 马琴 | Preparation method of anhydrous sodium sulfide |
| CN106185838A (en) * | 2016-07-01 | 2016-12-07 | 马琴 | Sodium sulfide preparation method |
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