CS197830B1 - Method for the chemical pre-treatment of waste water from the production of vulcanization accelerator n-cyclohexyl-2-benzthiazyl sulphenamide - Google Patents
Method for the chemical pre-treatment of waste water from the production of vulcanization accelerator n-cyclohexyl-2-benzthiazyl sulphenamide Download PDFInfo
- Publication number
- CS197830B1 CS197830B1 CS210178A CS210178A CS197830B1 CS 197830 B1 CS197830 B1 CS 197830B1 CS 210178 A CS210178 A CS 210178A CS 210178 A CS210178 A CS 210178A CS 197830 B1 CS197830 B1 CS 197830B1
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- waste water
- treatment
- cyclohexyl
- production
- vulcanization accelerator
- Prior art date
Links
- 239000002351 wastewater Substances 0.000 title claims description 18
- 239000000126 substance Substances 0.000 title claims description 6
- 238000000034 method Methods 0.000 title claims description 5
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 238000002203 pretreatment Methods 0.000 title claims description 4
- 238000004073 vulcanization Methods 0.000 title description 3
- 239000010802 sludge Substances 0.000 claims description 5
- DEQZTKGFXNUBJL-UHFFFAOYSA-N n-(1,3-benzothiazol-2-ylsulfanyl)cyclohexanamine Chemical compound C1CCCCC1NSC1=NC2=CC=CC=C2S1 DEQZTKGFXNUBJL-UHFFFAOYSA-N 0.000 claims description 4
- 239000003610 charcoal Substances 0.000 claims description 3
- 239000000356 contaminant Substances 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims 1
- 230000020477 pH reduction Effects 0.000 claims 1
- IOJUPLGTWVMSFF-UHFFFAOYSA-N benzothiazole Chemical compound C1=CC=C2SC=NC2=C1 IOJUPLGTWVMSFF-UHFFFAOYSA-N 0.000 description 4
- 230000002588 toxic effect Effects 0.000 description 4
- 231100000563 toxic property Toxicity 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000012895 dilution Substances 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 241000243653 Tubifex Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229940124530 sulfonamide Drugs 0.000 description 1
- 238000006277 sulfonation reaction Methods 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
Landscapes
- Water Treatment By Sorption (AREA)
Description
Vynález sa týká spósobu chemického predčistenia odpadových vód z výroby urýchlovača vulkanizácie N-cyklohexyl-2-benztiazylsulfénamidu pre biologické čistenie aktivovaným kalom.The present invention relates to a process for the chemical pre-treatment of waste water from the production of a vulcanization accelerator of N-cyclohexyl-2-benzothiazylsulfenamide for activated sludge biological treatment.
Pri výrobě urýchlovača vulkanizácie N-cyklohexyl-2-benztiazylsulfénamidu vznikajú technologické odpadové vody, obsahujúce minerálně i organické znečistenie. Dominantnou zložkou, určujúcou ich chemicko-biologický charakter sú predovšetkým rozpustné organické látky v množstve 3 až 5 g.l** 1, ktoré pozostávajú hlavně z benztiazolu a jeho derívátov. Ich přítomnost’ v odpadovej vodě sa vyznačuje žltozeleným sfarbením a charakteristickým pachom, ktorý převláda aj po značnom nariedení. Zistilo sa, že technologická odpadová voda ako taká má toxické vlastnosti na váčšinu saprobiálnych organizmov i utilizujúce mikroorganizmy aktivovaného kalu pri aeróbnom biologickom čistění. Pri riedení nižšom ako 1 : 50, inými odpadovými vodami, obsahujúcimi biologicky lahko degradabilné látky, dochádza k rozpadu vločiek aktivovaného kalu a zastaveniu biologického procesu čistenia.In the production of the vulcanization accelerator N-cyclohexyl-2-benzothiazylsulfenamide, technological waste waters are produced, containing both mineral and organic contaminants. The dominant component determining their chemical-biological character is mainly soluble organic substances in an amount of 3 to 5 gl * * 1 , consisting mainly of benzothiazole and its derivatives. Their presence in the waste water is characterized by a yellow-green color and a characteristic odor, which is still prevalent even after considerable dilution. Technological waste water as such has been found to have toxic properties for most saprobial organisms as well as utilizing activated sludge microorganisms in aerobic biological treatment. At a dilution of less than 1:50 with other effluents containing biologically degradable substances, the flake of activated sludge breaks down and the biological treatment process is stopped.
Zistilo sa, že nositelem toxických vlastnosti odpadovej vody je predovšetkým benztiazol, benztiazyl-2-sulfónamid, resp. ich hydrolytické produkty, vznikajúce vedfajšími reakciami hlavného technologického procesu. Pri riešení zníženia toxických vlastností odpadovej vody pre biologické čistenie aktivovaným kalom bolo vynajdené, že toho možno dosiahnut* chemickým predčistením odpadovej vody, pri ktorom sa odstráni podstatná časťIt has been found that the carrier of the toxic properties of the waste water is primarily benzothiazole, benzothiazyl-2-sulfonamide, respectively. their hydrolytic products resulting from the side reactions of the main technological process. In addressing the reduction of toxic properties of wastewater for biological treatment with activated sludge, it has been invented that this can be achieved by chemical pre-treatment of the wastewater, in which a substantial part is removed
197 8J0197 8J0
197 830 organických látok v tuhej formě a zároveň sa znižia toxické vlastnosti odpadovej vody ako vidieť z nasledovného přikladu.197,830 organic matter in solid form while reducing the toxic properties of the waste water as seen from the following example.
Příklad 1Example 1
Do 3 litrovej sulfonačnej banky opatrenej mieěadlom, teplomerom, prikvapkávacím lie vikom a meracimi elektrodami pH metra sa predsadilo 2,5 litra odpadovej vody z přípravy N-cyklohexyl-2-benztiazylsulfénamidu s hodnotou pH 10,2 a LCg0 48 h na červy Tubifex-tubifex 4,3 ml/1. Postupným prídavkom 6,7 ml koncentrovanej kyseliny sírovej sa v priebehu 20 minút za miešania upravilo pH odpadovej vody na 2, pričom sa vylúčila biela zrazenina organických látok. Potom sa k zmesi přidalo 2,5 g dřeveného práškového uhlia a zmes sa miěšala dalších 10 minút. Po tejto době sa vzniklá zrazenina odfiltrovala. Kyslá predčis tená odpadová voda sa zneutralizovala prídavkom koncentrovaného roztoku NaOH na pH 7.2.5 liters of waste water from the preparation of N-cyclohexyl-2-benzothiazylsulphenamide having a pH value of 10.2 and LC g0 48h for Tubifex- worms was introduced into a 3-liter sulfonation flask equipped with a stirrer, thermometer, dropping bottle and pH electrodes. tubifex 4.3 ml / l. By gradually adding 6.7 ml of concentrated sulfuric acid, the pH of the waste water was adjusted to 2 with stirring over a period of 20 minutes, whereupon a white precipitate of organic matter was formed. Then, 2.5 g of charcoal charcoal was added to the mixture and blended for an additional 10 minutes. After this time, the resulting precipitate was filtered off. The acid pre-treated waste water was neutralized by addition of concentrated NaOH solution to pH 7.
LC50 48 h takto upravenéj odpadovej vody představovalo hodnotu 220 ml-/l. Súčasne so zničením toxicity odpadovej vody poklesne i hodnota CHSK o výše 70 % oproti pčvodnej hod notě neupravenej odpadovej vody. LC 50 48 h of the treated waste water was 220 ml / l. At the same time as waste water toxicity is reduced, the COD value will decrease by 70% compared to the original value of untreated waste water.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS210178A CS197830B1 (en) | 1978-04-01 | 1978-04-01 | Method for the chemical pre-treatment of waste water from the production of vulcanization accelerator n-cyclohexyl-2-benzthiazyl sulphenamide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS210178A CS197830B1 (en) | 1978-04-01 | 1978-04-01 | Method for the chemical pre-treatment of waste water from the production of vulcanization accelerator n-cyclohexyl-2-benzthiazyl sulphenamide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS197830B1 true CS197830B1 (en) | 1980-05-30 |
Family
ID=5357138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS210178A CS197830B1 (en) | 1978-04-01 | 1978-04-01 | Method for the chemical pre-treatment of waste water from the production of vulcanization accelerator n-cyclohexyl-2-benzthiazyl sulphenamide |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS197830B1 (en) |
-
1978
- 1978-04-01 CS CS210178A patent/CS197830B1/en unknown
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