RO86669B1 - Process for purifying effluents - Google Patents

Process for purifying effluents

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Publication number
RO86669B1
RO86669B1 RO110092A RO11009283A RO86669B1 RO 86669 B1 RO86669 B1 RO 86669B1 RO 110092 A RO110092 A RO 110092A RO 11009283 A RO11009283 A RO 11009283A RO 86669 B1 RO86669 B1 RO 86669B1
Authority
RO
Romania
Prior art keywords
mol
formaldehyde
urea
treated
purifying effluents
Prior art date
Application number
RO110092A
Other languages
Romanian (ro)
Other versions
RO86669A2 (en
Inventor
Sorin Parmac
Anton Buliga
Epsica Chiru
Ion Costov
Mihail Cruceru
Cristina Varlam
Nicolae Pristavu
Elena Georgescu
Constantin Vicol
Emil Dumitrescu
Original Assignee
Institutul De Cercetari Si Proiectari Pentru Epurarea Apelor Reziduale
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 Institutul De Cercetari Si Proiectari Pentru Epurarea Apelor Reziduale filed Critical Institutul De Cercetari Si Proiectari Pentru Epurarea Apelor Reziduale
Priority to RO110092A priority Critical patent/RO86669B1/en
Publication of RO86669A2 publication Critical patent/RO86669A2/en
Publication of RO86669B1 publication Critical patent/RO86669B1/en

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Abstract

Procedeul de epurare a apelor reziduale consta în aceea ca apa reziduala cu continut de substante organice exprimat ca CCOOr de 15000-50000 mg/1 se trateaza la o temperatura de 40......80 degree C cu 0,15....1 mol uree si 0,15...1 mol formaldehida raport uree formaldehida fiind de 1 : 1....1 : 2 rasina formata se separa prin filtrare sau sedimentare, iar apa tratata, dupa neutralizare la pH 0,2-0,5 se epureaza biologic.The wastewater treatment process consists in the fact that the waste water containing organic substances expressed as CCOOr of 15,000-50000 mg / l is treated at a temperature of 40 ... 80 ° C with 0,15 ... 1 mol of urea and 0.15 to 1 mol of formaldehyde, the ratio of urea formaldehyde being 1: 1 .... 1: 2, the formed resin is separated by filtration or sedimentation and the treated water is neutralized to pH 0.2- 0.5 is biologically purified.

RO110092A 1983-02-22 1983-02-22 Process for purifying effluents RO86669B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RO110092A RO86669B1 (en) 1983-02-22 1983-02-22 Process for purifying effluents

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RO110092A RO86669B1 (en) 1983-02-22 1983-02-22 Process for purifying effluents

Publications (2)

Publication Number Publication Date
RO86669A2 RO86669A2 (en) 1985-06-29
RO86669B1 true RO86669B1 (en) 1985-07-01

Family

ID=20112710

Family Applications (1)

Application Number Title Priority Date Filing Date
RO110092A RO86669B1 (en) 1983-02-22 1983-02-22 Process for purifying effluents

Country Status (1)

Country Link
RO (1) RO86669B1 (en)

Also Published As

Publication number Publication date
RO86669A2 (en) 1985-06-29

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