SU143733A1 - Method of wastewater treatment plants viscose fibers - Google Patents
Method of wastewater treatment plants viscose fibersInfo
- Publication number
- SU143733A1 SU143733A1 SU682305A SU682305A SU143733A1 SU 143733 A1 SU143733 A1 SU 143733A1 SU 682305 A SU682305 A SU 682305A SU 682305 A SU682305 A SU 682305A SU 143733 A1 SU143733 A1 SU 143733A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- wastewater treatment
- treatment plants
- viscose fibers
- viscose
- zinc
- Prior art date
Links
Landscapes
- Removal Of Specific Substances (AREA)
Description
Растворение сульфида цинка в серной кислоте с получением сульфата известно. Известно также удаление из сточных вод вискозного производства растворенных газов и наров (сероводорода, сероуглерода ) продувкой воздухом ИЛИ вакуумированием. Известен и прием обработки КИСЛЫХ стоков промышленных предпрн тий, в том числе и заводов вискозного волокна, сернистым натрием. Кроме того, известно осажде .ние цинка из промышленных растворов сернистым натрием. Извесгио также, что из кислых растворов сернистый натрий осаждает цинк, но не осаждает железо, однако без точного указани значений рН этих растворов.The dissolution of zinc sulfide in sulfuric acid to produce sulfate is known. It is also known to remove from the wastewater viscose production of dissolved gases and bunks (hydrogen sulfide, carbon disulfide) by blowing with air OR by vacuuming. There is also a known method of treating the acidic effluents of industrial enterprises, including the factories of viscose fiber, with sodium sulphide. In addition, the precipitation of zinc from industrial solutions by sodium sulphide is known. It is also found that zinc is precipitated from acidic solutions with sodium sulphide, but it does not precipitate iron, however, without a precise indication of the pH values of these solutions.
Предлагаемый способ очистки сточных вод заводов вискозного волокна отличаетс от известных тем, что, с целью улучшени процесса очистки и совмещени его с процессом регенерации сульфата цинка, обработку сточных вод сернистым натрием ведут при значени х рН 2,5-3,5.The proposed wastewater treatment method of viscose fiber plants differs from the known ones in order to improve the purification process and combine it with the zinc sulphate regeneration process, wastewater treatment with sodium sulfide is carried out at pH values of 2.5-3.5.
Сушность предлагаемого способа состоит в следующем. Вискозные и щелочные (из диализаторов) стоки после предварительного усреднени в течение пор дка четырех часов обрабатываютс частью кислых стоков пластификационных ванн и подкисл ютс при этом до рН-2; содержаща с в них вискоза разрушаетс , а регенерированна целлюлоза образует хлопь , которые оседают в вертикальных отстойниках или осветлител х. При этом сточные воды частично освобождаютс также и ст низкомолекул рных фракций целлюлозы, содержащихс в диализаторных стоках. ОдновоомрРН н гьпцаютс сероуглеродом и сероводородом (продуктами распада вискозы).Dryness of the proposed method is as follows. Viscose and alkaline (from dialyzers) drains, after preliminary averaging, are treated with part of the acidic effluent of plasticization baths for about four hours and acidified to pH-2; the viscose contained in them is destroyed, and the regenerated cellulose forms flakes, which are deposited in the vertical sedimentation tanks or clarifiers. At the same time, the wastewater is also partially freed by the article of low molecular weight cellulose fractions contained in dialyzer drains. OdnavomrnR n gptsayut with carbon disulfide and hydrogen sulfide (products of decay of viscose).
Стоки пластификационны.к вана, наиболее насыщенных цинком, смешиваютс с остальными стоками, содержашими цинк (oтдev oчныe воды, стоки от продувки циркул ционных систем регенерации осадиPlasticization drains, most saturated with zinc, are mixed with the remaining zinc-containing effluents (waste water, effluents from the sludge circulating circulation systems
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU682305A SU143733A1 (en) | 1960-10-17 | 1960-10-17 | Method of wastewater treatment plants viscose fibers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU682305A SU143733A1 (en) | 1960-10-17 | 1960-10-17 | Method of wastewater treatment plants viscose fibers |
Publications (1)
Publication Number | Publication Date |
---|---|
SU143733A1 true SU143733A1 (en) | 1960-11-30 |
Family
ID=48299472
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU682305A SU143733A1 (en) | 1960-10-17 | 1960-10-17 | Method of wastewater treatment plants viscose fibers |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU143733A1 (en) |
-
1960
- 1960-10-17 SU SU682305A patent/SU143733A1/en active
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