Liquid purification or separation – Processes – Treatment by living organism
Patent
1990-01-24
1991-02-26
Wyse, Tom
Liquid purification or separation
Processes
Treatment by living organism
210609, 210622, 210631, 210919, C02F 328
Patent
active
049959816
ABSTRACT:
The invention relates to a process for anaerobically degrading highly concentrated process waste waters as obtained particularly in the chemical industry, in paper mills and cellulose plants, fish-processing plants, and in the production and elimination of alcohol or the like, whereby the CSB-content may be up to 10.sup.6 mg/l or more. This process comprises a putrefactive process which is induced in at least one decomposition tank at about 34.degree. C. by circulating normal sewage sludge, whereby upon start-up of the putrefactive process, a change to chemical process waste waters is carried out without adding communal sewage sludge. Subsequently, the sludge is withdrawn from the decomposition tank, flocculated, and returned to the external circulation for circulating the putrefactive sludge in the decomposition tank.
REFERENCES:
patent: 4019952 (1977-04-01), Ploetz et al.
patent: 4213857 (1980-07-01), Ishida et al.
patent: 4377486 (1983-03-01), Borrick et al.
patent: 4565552 (1986-01-01), Cotton
patent: 4780207 (1988-10-01), Engwirda
patent: 4894162 (1990-01-01), Cournoyer et al.
Reiflock-Umwelttechnik Margot Reichmann
Wyse Tom
LandOfFree
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