MD1669F2 - Process for treatment of sewage from formaldehyde - Google Patents

Process for treatment of sewage from formaldehyde Download PDF

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Publication number
MD1669F2
MD1669F2 MD990181A MD990181A MD1669F2 MD 1669 F2 MD1669 F2 MD 1669F2 MD 990181 A MD990181 A MD 990181A MD 990181 A MD990181 A MD 990181A MD 1669 F2 MD1669 F2 MD 1669F2
Authority
MD
Moldova
Prior art keywords
treatment
sewage
formaldehyde
sawdust
sediment
Prior art date
Application number
MD990181A
Other languages
Romanian (ro)
Other versions
MD990181A (en
MD1669G2 (en
Inventor
Victor Covaliov
Vladimir Cocoulin
Original Assignee
Univ De Stat Din Moldova
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 Univ De Stat Din Moldova filed Critical Univ De Stat Din Moldova
Priority to MD99-0181A priority Critical patent/MD1669G2/en
Publication of MD990181A publication Critical patent/MD990181A/en
Publication of MD1669F2 publication Critical patent/MD1669F2/en
Publication of MD1669G2 publication Critical patent/MD1669G2/en

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  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Removal Of Specific Substances (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

The invention refers to processes for treatment of sewage from formaldehyde Summary of the invention consists in, that it is proposed a process for treatment of sewage from formaldehyde comprising treatment thereof with urea and aluminium sulfate in the quantity of 0,1...1,5 g/L in the acid medium (pH 2) at mixing and heating up to 20...30 degree C during 1...2 hours. Then into the formed suspension it is administered the sawdust in the quantity of 10...15% and the sediment is removed by centrifugation.The result consists in accelerating the process for treatment of sewage from formaldehyde, in decreasing the temperature and in increasing the treatment effectiveness process.Claims: 1
MD99-0181A 1999-06-17 1999-06-17 Process for treatment of sewage from formaldehyde MD1669G2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
MD99-0181A MD1669G2 (en) 1999-06-17 1999-06-17 Process for treatment of sewage from formaldehyde

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
MD99-0181A MD1669G2 (en) 1999-06-17 1999-06-17 Process for treatment of sewage from formaldehyde

Publications (3)

Publication Number Publication Date
MD990181A MD990181A (en) 2001-02-28
MD1669F2 true MD1669F2 (en) 2001-05-31
MD1669G2 MD1669G2 (en) 2001-11-30

Family

ID=19739431

Family Applications (1)

Application Number Title Priority Date Filing Date
MD99-0181A MD1669G2 (en) 1999-06-17 1999-06-17 Process for treatment of sewage from formaldehyde

Country Status (1)

Country Link
MD (1) MD1669G2 (en)

Also Published As

Publication number Publication date
MD990181A (en) 2001-02-28
MD1669G2 (en) 2001-11-30

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