CS274077B1 - Method of waste waters treatment from technological processes of silvering - Google Patents
Method of waste waters treatment from technological processes of silvering Download PDFInfo
- Publication number
- CS274077B1 CS274077B1 CS363389A CS363389A CS274077B1 CS 274077 B1 CS274077 B1 CS 274077B1 CS 363389 A CS363389 A CS 363389A CS 363389 A CS363389 A CS 363389A CS 274077 B1 CS274077 B1 CS 274077B1
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- silvering
- waste water
- treatment
- technological processes
- waste waters
- Prior art date
Links
- 239000002351 wastewater Substances 0.000 title abstract description 18
- 238000000034 method Methods 0.000 title abstract description 15
- 238000010790 dilution Methods 0.000 claims abstract description 3
- 239000012895 dilution Substances 0.000 claims abstract description 3
- 159000000003 magnesium salts Chemical class 0.000 claims abstract description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 4
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 3
- 239000010865 sewage Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims 1
- 238000005422 blasting Methods 0.000 claims 1
- 210000000287 oocyte Anatomy 0.000 claims 1
- 159000000000 sodium salts Chemical class 0.000 claims 1
- 229910052709 silver Inorganic materials 0.000 abstract description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract description 5
- 239000004332 silver Substances 0.000 abstract description 5
- 238000004062 sedimentation Methods 0.000 abstract description 4
- 238000004140 cleaning Methods 0.000 abstract description 2
- 238000005189 flocculation Methods 0.000 abstract description 2
- 238000006386 neutralization reaction Methods 0.000 abstract description 2
- 230000016615 flocculation Effects 0.000 abstract 1
- 239000000126 substance Substances 0.000 description 4
- 239000010802 sludge Substances 0.000 description 3
- 239000003643 water by type Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- PQUXFUBNSYCQAL-UHFFFAOYSA-N 1-(2,3-difluorophenyl)ethanone Chemical compound CC(=O)C1=CC=CC(F)=C1F PQUXFUBNSYCQAL-UHFFFAOYSA-N 0.000 description 1
- 241000220479 Acacia Species 0.000 description 1
- 235000010643 Leucaena leucocephala Nutrition 0.000 description 1
- WWAZUUULUNZNFE-UHFFFAOYSA-N [Na].NC(=O)C=C Chemical compound [Na].NC(=O)C=C WWAZUUULUNZNFE-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 210000003296 saliva Anatomy 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 229940047670 sodium acrylate Drugs 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
Description
Vynález aa týká čietenla odpadových vod z technologických proceaov striebrenia prebiehajúcich v ailno alkaliokotn redukčnom prostředí, najma odpadových vod zo atriebrenla v aklárakom priemysle.The invention aa relates to a reading of wastewater from the silvering process processes taking place in an alkali-alkali reduction environment, in particular wastewater from atriebrenl in the acacia industry.
Tieto odpadové vody obsahujú striobro v množstve 10,0 až 20,0 mg.l1. Striebro je v koloidnej formě a má zlé sedimentačně vlastnosti. V súčasnosti aa tieto vody čistia sedimentačným proceaom. Účinnost' čistenia je nízká. Vzhladom na vysoku solnosť, vysoké pH a vysoký zbytkový obaah striebrav odsedimentovanej vodě, sú tieto vody inhibítorom biologického čistenia a nie je teda možné ich takýmto sposobom čistit'.These waste waters contain silver in an amount of 10.0 to 20.0 mg.l 1 . Silver is in colloidal form and has poor sedimentation properties. At present, these waters are purified by sedimentation process. The cleaning efficiency is low. Due to the high salinity, high pH and high residual silver content of the sedimented water, these waters are an inhibitor of biological purification and therefore cannot be purified in such a manner.
Teraz sa zistilo, že odpadové vody z technologických procesov striebrenia prebiehajúcioh v slino alkalicko-redukčnom prostředí je možné účinné čistit sposobom podía vynálezu.It has now been found that the waste water from the silvering process in the saliva of an alkali-reducing environment can be efficiently purified according to the invention.
Podstata vynálezu spočívá v tom, že sa tieto odpadové vody podrobia najprv flokulácii prídavkom horečnatých solí a pomocného flokulanta, s výhodou na báze akrylamldu a sodnej soli kyseliny akrylamidověj, ktorý sa přidává v množstve 0,15 až 0,27 mg. I1.The waste water is first flocculated by the addition of magnesium salts and an auxiliary flocculant, preferably based on acrylamide and sodium acrylamide, which are added in an amount of 0.15 to 0.27 mg. I 1 .
Ďalej sa vody podrobia sedimentaci! a neutralizácii kyselinou sírovou na hodnotu pH 8 až 9. Následné sa, po prípadnom zriedení so splaškovými vodami, podrobia biologickému člstenlu.Next, the waters are sedimented! and neutralization with sulfuric acid to a pH of 8-9.
fostupon podíavynálezu narastá sedimentačně rýchlosť kalu na 11,8 mm,min1 a súčasne sa zlapšujú 1 vlastnosti tohto kalu potřebné pri ďalšom opracovávaní.The process step of the present invention increases the sedimentation velocity of the sludge to 11.8 mm, min 1 and at the same time decreases the 1 properties of this sludge required for further processing.
Obsah striebrav zachytaných kaloch sa pohybuje v rozmedzí od 5 do 10 %. CHSK sa znižuje asi o 23 %.The silver content of the sewage sludge ranges from 5 to 10%. COD decreases by about 23%.
V případe, že z technologického procesu striebrenia vniknú do odpadových vod aj ropné látky je možné postupom podlá vynálezu s vysokým účinkom odstránit i tieto, čo má význam najma v případe výskytu nepředvídaných událostí v technologickom procese. Obsah ropných látok ovplyvnuja množstvo přidávaného pomocného flokulantu.In the event that even petroleum substances from the silvering process penetrate the wastewater into the wastewater, it is possible to remove these substances with the high-efficiency process according to the invention, which is of particular importance in the event of unforeseen events occurring in the technological process. The content of oil substances affects the amount of auxiliary flocculant added.
Predmet vynálezu ilustruje ale neobmedzuje nasledujúci příklad.The invention is illustrated but not limited by the following example.
Čistili sa odpadové vody z technologického procesu striebrenia v sklárnách.Waste water from the silvering process in the glassworks was treated.
Odpadové vody mali tieto vstupné parametre:Waste waters had the following input parameters:
pHpH
CHSKCr /mg.l1/COD Cr /mg.l 1 /
ΚΝΚθ 3 /mmol.l1/3θ 3 /mmol.l 1 /
KNK. /mmol.l1/KNK. /mmol.l 1 /
NH+ /mg.l < ’NH + /mg.l <’
Ag /mg.l1/Ag /mg.l 1 /
12,2 - 13,2 1040 - 142012.2 - 13.2 1040 - 1420
50,2 - 57,2 61,0 - 70,850.2 - 57.2 61.0 - 70.8
863 - 1030863-1030
10,0 - 20,010.0 - 20.0
2+ -12+ -1
K čištěným odpadovým vodám sa pridel MgSO^ v množstve 70 mg Mg .1 a pomocný flokulant na báze - akrylemidu a sodnej soli kyseliny akrylovej v množstve 0,27 mg.l1. Po přeběhnutí íickulačného procesu Ba odpadové vody podrobili sedimentácii po dobu 2 hodin. Sedimentovaný kal obsahoval 10 % Ag a použil sa na ďalšie spracovanie.The purified waste water is added in an amount of MgSO Mg 70 mg .1 and a flocculating aid to the base - akrylemidu and sodium acrylate in an amount of 0.27 mg.l first After the flocculation process Ba, the waste water was sedimented for 2 hours. The sedimented sludge contained 10% Ag and was used for further processing.
Odpadové vody sa ďalej zneutralizovali prídavkom HgSO^ na hodnotu pH 8,3.The waste water was further neutralized by addition of H 2 SO 4 to a pH of 8.3.
Takto predčistené odpadové vody s paramatrami:Pre-treated wastewater with parameters:
8,38.3
800 - 1100800 - 1100
10,8 - 13,610.8 - 13.6
800 - 950800 - 950
0,350.35
CS 273077 Bl * sa po zriedení 1 : 20 so splaškovými vodami podrobili priamo biologickému čisteniu na ČOV.CS 273077 B1 * after a 1:20 dilution with sewage was subjected directly to biological treatment at the WWTP.
Inhibícia biologického čistiaceho proceau ea nepozorovala.Inhibition of the biological purification process was not observed.
Popísaná odpadové vody obsahovali súčasne emulgované ropné látky z technologie kej linky v množstve 56 mg.I*1.The waste water described contained 56 mg.I * 1 emulsified petroleum substances from the line technology at the same time.
V priebehu popísaného procesu sa ioh obsah znížil ne 0,7 mg,l-1.During the described process, the ioh content was reduced to 0.7 mg, l -1 .
Účinnosť odstránenia v popisovanom příklade bola pre etriebro 98 % a pre ropné látky 98,7 %-ná.The removal efficiency in the described example was 98% for etriebro and 98.7% for petroleum products.
Riadenia splaškovými vodami má fakultatívny charakter a je ctalšou odporúčanou poistkou pre případ výskytu nepředvídaných událostí v procese čistenia odpsdovýoh v8d podlá vynálezu.Sewage water management has an optional character and is a further recommended safeguard for the occurrence of unforeseen events in the wastewater treatment process according to the invention.
PREDMET VYNÁLEZUOBJECT OF THE INVENTION
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS363389A CS274077B1 (en) | 1989-06-15 | 1989-06-15 | Method of waste waters treatment from technological processes of silvering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS363389A CS274077B1 (en) | 1989-06-15 | 1989-06-15 | Method of waste waters treatment from technological processes of silvering |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CS363389A1 CS363389A1 (en) | 1990-08-14 |
| CS274077B1 true CS274077B1 (en) | 1991-04-11 |
Family
ID=5376947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS363389A CS274077B1 (en) | 1989-06-15 | 1989-06-15 | Method of waste waters treatment from technological processes of silvering |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS274077B1 (en) |
-
1989
- 1989-06-15 CS CS363389A patent/CS274077B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CS363389A1 (en) | 1990-08-14 |
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