Process for high-load treatment of carbohydrate containing waste

Details Process for high-load treatment of carbohydrate containing waste Process for high-load treatment of carbohydrate containing waste

1991-03-20

1991-12-24

Wyse, Thomas

Liquid purification or separation

Processes

Treatment by living organism

210622, 210624, 210631, 210754, 210764, C02F 334

Patent

active

050750089

ABSTRACT:
A process for high-load treatment of carbohydrate-containing waste water comprises the steps of separating a yeast appearing in the waste water, subjecting the separated yeast to large-quantity culture, and treating the waste water by a high-load operation using the cultured yeast as a seed fungus under the conditions of a volume load of 10 to 80 kg-BOD/m.sup.3 .multidot.day and a yeast load of 1.0 to 5.0 kg-BOD/kg-yeast.multidot.day, whereby it is possible to treat the high-concentration waste water efficiently with a small volume for treatment. To obviate the conflict between the yeast and bacteria, it is recommendable to add Cl.sub.2 to a reservoir in an amount of 10 to 50 mg/l. Upon the treatment of the waste water, a surplus of yeast is generated, which contains proteins and vitamins in high contents and, therefore, is capable of being taken by a fodder company as fodder or fertilizer; thus, the disposal cost associated with the surplus yeast is saved.

REFERENCES:
patent: 3705098 (1972-12-01), Shepherd et al.
patent: 3801499 (1974-04-01), Luck
patent: 4044500 (1977-08-01), Hitzman
patent: 4183807 (1980-01-01), Yoshizawa et al.
patent: 4211645 (1980-07-01), Zajic et al.
patent: 4321143 (1982-03-01), Wilms et al.
patent: 4371440 (1983-02-01), Yoshizawa et al.

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