PL134583B1 - Method of neutralizing soda pulp production waste waters - Google Patents

Method of neutralizing soda pulp production waste waters Download PDF

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Publication number
PL134583B1
PL134583B1 PL23649582A PL23649582A PL134583B1 PL 134583 B1 PL134583 B1 PL 134583B1 PL 23649582 A PL23649582 A PL 23649582A PL 23649582 A PL23649582 A PL 23649582A PL 134583 B1 PL134583 B1 PL 134583B1
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PL
Poland
Prior art keywords
production waste
waste waters
pulp production
soda pulp
neutralizing
Prior art date
Application number
PL23649582A
Other languages
Polish (pl)
Other versions
PL236495A1 (en
Inventor
Jan Wichhof
Zbigniew Kalinowski
Michal Pilecki
Agata Buck
Original Assignee
Inst Chemii Nieorganicznej
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Inst Chemii Nieorganicznej filed Critical Inst Chemii Nieorganicznej
Priority to PL23649582A priority Critical patent/PL134583B1/en
Publication of PL236495A1 publication Critical patent/PL236495A1/en
Publication of PL134583B1 publication Critical patent/PL134583B1/en

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Claims (1)

1. Zastrzezenie patentowe Sposób neutralizacji alkalicznych scieków posodowych, znamienny tym, ze na scieki te dziala sie, korzystnie przy intensywnym mieszaniu, roztworem siarczanu zela¬ zawego lub krystalicznym siarczanem zelazawym siedmiowodnym az do uzyskania pH c 3,5-9t nastepnie zawiesine napowietrza do uzyskania pH = 7-8,5, po czym wytracone wodorotlenki zelaza i siarczan wapniowy oddziela sie w znany sposób przez filtracje i/lub sedymen¬ tacje. Pracownia Poligraficzna UP PRL. Naklad 100 cgz. Cena 100 zl. PL1. Patent claim A method of neutralizing alkaline post-sodium wastewater, characterized in that the wastewater is treated, preferably with intensive stirring, with a solution of iron sulphate or crystalline iron sulphate heptahydrate until a pH c of 3.5-9 t is obtained, then an air suspension to obtain pH = 7-8.5, then the precipitated iron hydroxides and calcium sulphate are separated in a known manner by filtration and / or sedimentation. Printing workshop of the UP PRL. Mintage 100 cg. Price: PLN 100. PL
PL23649582A 1982-05-18 1982-05-18 Method of neutralizing soda pulp production waste waters PL134583B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL23649582A PL134583B1 (en) 1982-05-18 1982-05-18 Method of neutralizing soda pulp production waste waters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL23649582A PL134583B1 (en) 1982-05-18 1982-05-18 Method of neutralizing soda pulp production waste waters

Publications (2)

Publication Number Publication Date
PL236495A1 PL236495A1 (en) 1983-11-21
PL134583B1 true PL134583B1 (en) 1985-08-31

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ID=20012652

Family Applications (1)

Application Number Title Priority Date Filing Date
PL23649582A PL134583B1 (en) 1982-05-18 1982-05-18 Method of neutralizing soda pulp production waste waters

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PL (1) PL134583B1 (en)

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Publication number Publication date
PL236495A1 (en) 1983-11-21

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