PL37342B1 - - Google Patents
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- Publication number
- PL37342B1 PL37342B1 PL37342A PL3734253A PL37342B1 PL 37342 B1 PL37342 B1 PL 37342B1 PL 37342 A PL37342 A PL 37342A PL 3734253 A PL3734253 A PL 3734253A PL 37342 B1 PL37342 B1 PL 37342B1
- Authority
- PL
- Poland
- Prior art keywords
- wastewater
- sulphite
- iron
- connections
- milk
- Prior art date
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- 239000002351 wastewater Substances 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 4
- 150000007513 acids Chemical class 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 229920002678 cellulose Polymers 0.000 claims description 3
- 239000001913 cellulose Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 159000000014 iron salts Chemical class 0.000 claims description 2
- 235000014785 Bergenia crassifolia Nutrition 0.000 claims 1
- 240000004972 Bergenia crassifolia Species 0.000 claims 1
- 241000196324 Embryophyta Species 0.000 claims 1
- 235000011116 calcium hydroxide Nutrition 0.000 claims 1
- 239000000920 calcium hydroxide Substances 0.000 claims 1
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 229920001732 Lignosulfonate Polymers 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
Scieki z fabryk celulozy siarczynowej zawiera¬ jace roztwory lugów posiarczynowych przecho¬ dzacych do scieków w operacji plukania celulo¬ zy sa szczególnie trudne do oczyszczania w stop¬ niu okreslonym odnosnymi rozporzadzeniami za¬ bezpieczajacymi czystosc wód w odbiornikach scieków. Trudnosc ta polega na tym, ze zasadni¬ czy skladnik lugów posiarczynowych — kwasy lignosulfonowe — odznaczaja sie wyjatkowa trwaloscia tak, ze nie latwo ulegaja biologicz¬ nemu rozlozeniu, oraz posiadaja tak silne wlas¬ ciwosci hydrofilne, ze tylko w niklym stopniu mozna je usunac z roztworów metodami oparty¬ mi na zjawiskach sorbcyjnych. Dlatego tez spo¬ soby oczyszczania tych scieków znanymi meto¬ dami koagulacji nie daja wystarczajacych wyni¬ ków.Wynalazek polega na uprzednim przeprowa¬ dzeniu kwasów lignosulfonowych, zawartych w sciekach, w polaczeniu z zelazem przez dziala- *) Wlasciciel patentu oswiadczyl, ze twórca wyna¬ lazku jest mgir dmz. Jerzy Ganczarczyk. nie na scieki solami zelaza trójwartosciowego lub dwu wartosciowego w obecnosci substancji utleniajacych oraz nastepnej koagulacji otrzy¬ manych polaczen kompleksowych mlekiem wa¬ piennym.Okazalo sie, ze kompleksowe polaczenia kwa¬ sów lignosulfonowych z zelazem ulegaja koagu¬ lacji w daleko wiekszym stopniu niz same kwa¬ sy lignosulfonowe. PLWastewater from sulphite cellulose mills containing solutions of sulphite liquors that pass into the wastewater in the cellulose washing operation is particularly difficult to purify to the extent specified by relevant regulations ensuring the purity of water in sewage receivers. The difficulty lies in the fact that the main component of the sulphite slurry - ligninsulphonic acids - are extremely stable, so that they do not readily biodegrade, and have such strong hydrophilic properties that they can only be removed from the surface to a small extent. solutions by methods based on sorption phenomena. Therefore, the methods of treating these wastewaters by known coagulation methods do not give sufficient results. The invention consists in the prior preparation of lignosulphonic acids contained in the wastewater in combination with iron by an operation- *) The patent owner stated that the inventor ¬ lazku is mgir dmz. Jerzy Ganczarczyk. not to the wastewater with trivalent or bivalent iron salts in the presence of oxidizing substances and the subsequent coagulation of the resulting complex connections with milk. It turned out that the complex combinations of lignosulphonic acids with iron coagulate to a much greater extent than themselves. lignosulfonates. PL
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL37342B1 true PL37342B1 (en) | 1954-06-15 |
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