C. Yanagi et al., TREATMENT OF WHEAT-STARCH WASTE-WATER BY A MEMBRANE COMBINED 2-PHASE METHANE FERMENTATION SYSTEM, Desalination, 98(1-3), 1994, pp. 161-170
Waste water from wheat starch production was treated by a membrane com
bined two phase methane fermentation system with 20kg/m(3)d of COD loa
ding. The following satisfactory results were obtained: BOD and SS con
centration in the system effluent was under 50 mg/l and 90 mg/l respec
tively, More than 99% of organic matter was removed. About 40,000 kcal
of methane gas energy was recovered in an operation of 12-22kg/m(3)d,
and the average methane gasification rate and sludge yield rate were
0.33Nm(3) CH4/kg COD removed, and 0.12kg VSS/kg COD removed respective
ly.