CS274997B2 - Method of nitrogen and phosphorus content reduction during waste waters treatment - Google Patents

Method of nitrogen and phosphorus content reduction during waste waters treatment

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Publication number
CS274997B2
CS274997B2 CS315789A CS315789A CS274997B2 CS 274997 B2 CS274997 B2 CS 274997B2 CS 315789 A CS315789 A CS 315789A CS 315789 A CS315789 A CS 315789A CS 274997 B2 CS274997 B2 CS 274997B2
Authority
CS
Czechoslovakia
Prior art keywords
sludge
rectification
nitrogen
sludge water
phosphorus content
Prior art date
Application number
CS315789A
Other languages
Czech (cs)
Other versions
CS8903157A1 (en
Inventor
Jan Ing Csc Cervenka
Bohumil Ing Csc Sulek
Jan Ing Drsc Cermak
Miroslav Ing Csc Kos
Vladimir Ing Dadak
Zdenek Ing Hanus
Original Assignee
Ustav Teoretickych Zakladu Che
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.)
Filing date
Publication date
Application filed by Ustav Teoretickych Zakladu Che filed Critical Ustav Teoretickych Zakladu Che
Priority to CS315789A priority Critical patent/CS274997B2/en
Publication of CS8903157A1 publication Critical patent/CS8903157A1/en
Publication of CS274997B2 publication Critical patent/CS274997B2/en

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  • Fertilizers (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
  • Treatment Of Sludge (AREA)

Abstract

The solution concerns a method of reducing contents of nitrogen and phosphorus in wastewater treatment. The sludge water is after anaerobic stabilizing of crude sludge alkalized by calcium to pH value of 10.5 to 12.4. The sludge is separated from it by sedimentation. Then the sludge water is pre-heated and introduced in rectification, where the content of ammoniac is reduced. The sludge water with reduced contents of ammoniac transfers heat to the sludge water introduced in rectification and returns into the aerobic treatment stage. The condensation heat from rectification is used for heating up sludge in anaerobic stabilization. The product from rectification is ammonia liquor, which gets into contact with biogas in absorber. This results in achieving the concentrated solution of technical ammonium carbonate, utilizable as a nitrogen fertilizer.
CS315789A 1989-05-26 1989-05-26 Method of nitrogen and phosphorus content reduction during waste waters treatment CS274997B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CS315789A CS274997B2 (en) 1989-05-26 1989-05-26 Method of nitrogen and phosphorus content reduction during waste waters treatment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS315789A CS274997B2 (en) 1989-05-26 1989-05-26 Method of nitrogen and phosphorus content reduction during waste waters treatment

Publications (2)

Publication Number Publication Date
CS8903157A1 CS8903157A1 (en) 1991-02-12
CS274997B2 true CS274997B2 (en) 1991-12-17

Family

ID=5370855

Family Applications (1)

Application Number Title Priority Date Filing Date
CS315789A CS274997B2 (en) 1989-05-26 1989-05-26 Method of nitrogen and phosphorus content reduction during waste waters treatment

Country Status (1)

Country Link
CS (1) CS274997B2 (en)

Also Published As

Publication number Publication date
CS8903157A1 (en) 1991-02-12

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