PL37825B1 - - Google Patents
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- Publication number
- PL37825B1 PL37825B1 PL37825A PL3782554A PL37825B1 PL 37825 B1 PL37825 B1 PL 37825B1 PL 37825 A PL37825 A PL 37825A PL 3782554 A PL3782554 A PL 3782554A PL 37825 B1 PL37825 B1 PL 37825B1
- Authority
- PL
- Poland
- Prior art keywords
- wastewater
- fermentation
- calcium carbonate
- butanol
- precipitate
- Prior art date
Links
- 238000000034 method Methods 0.000 claims description 9
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 7
- 239000002351 wastewater Substances 0.000 claims description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 6
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 6
- 238000000855 fermentation Methods 0.000 claims description 4
- 230000004151 fermentation Effects 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Chemical class CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 claims description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 2
- 239000000920 calcium hydroxide Substances 0.000 claims description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 2
- 239000012535 impurity Substances 0.000 claims description 2
- 239000008267 milk Substances 0.000 claims description 2
- 210000004080 milk Anatomy 0.000 claims description 2
- 235000013336 milk Nutrition 0.000 claims description 2
- 239000002699 waste material Substances 0.000 claims description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims 2
- 239000002244 precipitate Substances 0.000 claims 2
- 239000001569 carbon dioxide Substances 0.000 claims 1
- 229910002092 carbon dioxide Inorganic materials 0.000 claims 1
- 239000010842 industrial wastewater Substances 0.000 claims 1
- 229940088417 precipitated calcium carbonate Drugs 0.000 claims 1
- 239000000047 product Substances 0.000 claims 1
- 239000010865 sewage Substances 0.000 description 6
- 230000009931 harmful effect Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
Description
.Scieki przemyslowe zawieraja szereg szkodli- . wych zanieczyszczen, które musza byc usunie¬ te przed wpuszczeniem tych scieków do pub¬ licznych zbiorników wodnych na przyklad do rzek lub stawów. W szczególnosci scieki prze¬ myslowe nie moga byc silnie kwasne lub sil¬ nie alkaliczne, ani tez nie moga zawierac sub¬ stancji dzialajacych szkodliwie na flore i faune zbiorników wodnych.Sposoby oczyszczania scieków przemyslowych zalezne sa od zawartych w nich szkodliwych skladników, których rodzaj zalezy od produkcji zakladu przemyslowego, z którego pochodza scieki.Przedmiotem wynalazku jest sposób oczysz¬ czania scieków przemyslowych zawierajacych kwas octowy i kwasy maslowe oraz inne, glów¬ nie organiczne, zanieczyszczenia, przy czym *) Wlasciciel patentu oswiadczyl, ze twórcami wy¬ nalazku sa inz, Jan Obojski i dr Jan Kovats. substancje te wystepowac moga w pewnej czes¬ ci w postaci koloidu.Scieki tego rodzaju wystepuja zwlaszcza przy produkcji butanolu przez fermentacje. Zawar¬ tosc kwasów powoduje obnizenie pH wód scie¬ kowych, a ponadto wplywa hamujaco na pro¬ ces ich biologicznego oczyszczania.Sposób wedlug wynalazku polega na zada¬ waniu scieków nadmiarem wodorotlenku wap¬ niowego, najlepiej pod postacia mleka wapien¬ nego, i doprowadzaniu ich pH do okolo 10—11 i nastepnym saturowaniu za pomoca CO2 do pH ponizej 8. Do saturowania najlepiej uzywac jest CO2 otrzymywanego jako produkt odpad¬ kowy fermentacji. Zalkalizowanie scieków, po¬ za zobojetnieniem kwasów powoduje wytrace¬ nie pewnej ilosci substancji zwlaszcza orga^ nicznych z roztworu. Powstajacy przy saturacji weglan wapniowy powoduje dalsze oczyszcze¬ nie roztworu od zanieczyszczen, które zostajazaabsorbowane na wypadajacych czastkach weglanu* wapnia. dcietei po^JaturowanaiJ skifrowtije sie do od- stdjjnikow w * celu *ich sjclarowania i biologicz¬ nego oczyszczenia. '* Scieki sklarowane na przyklad na odstojniku Borsiga mozna rozcienczyc woda, co wplywa przyspieszajaco na proces ich biologicznego oczyszczania. PL. Industrial sewage contains a number of harmful effects. contaminants that must be removed before this sewage is discharged into public bodies of water, for example rivers or ponds. In particular, industrial sewage must not be strongly acidic or strongly alkaline, nor may it contain substances that are harmful to the flora and fauna of water reservoirs. The methods of cleaning industrial sewage depend on the harmful components contained in them, the type of which depends on The subject of the invention is a method of purification of industrial sewage containing acetic acid and butyric acids and other, mainly organic, pollutants, where *) the patent owner stated that the inventors are others , Jan Obojski and Dr. Jan Kovats. to some extent these substances may be present in the form of a colloid. Effluents of this kind occur in particular in the production of butanol by fermentation. The acid content lowers the pH of the wastewater and, moreover, inhibits the biological treatment of the wastewater. The method according to the invention consists in treating the wastewater with an excess of calcium hydroxide, preferably in the form of lime milk, and pH to about 10-11 and subsequent saturation with CO2 to a pH below 8. For saturation, it is best to use CO2 obtained as a waste product of fermentation. Alkalisation of the sewage, along with the neutralization of the acids, causes the loss of a certain amount of, especially organic substances, from the solution. The calcium carbonate formed during the saturation further purifies the solution from impurities that are absorbed on the falling out of calcium carbonate particles. cut and cut into the separators in order to clarify them and biologically purify them. '* Wastewater clarified, for example on a Borsig decanter, can be diluted with water, which accelerates the biological treatment process. PL
Claims (3)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL37825B1 true PL37825B1 (en) | 1954-10-15 |
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