METHOD OF COMPOSTING STARCH MANUFACTURE WASTE WATER SLUDGE AND METHOD OF TREATING STARCH MANUFACTURE WASTE WATER

摘要

PPROBLEM TO BE SOLVED: To provide a method of composting starch manufacture waste water sludge which is suitable for starch manufacture waste water and a method of treating the starch manufacture waste water. PSOLUTION: Before the composting of the sludge separated by a starch manufacture waste water treatment, the sludge is dried to contain 20% water and the resultant dried sludge is stored . A biogas obtained by the biological treatment of a liquid separated from the sludge is used as a fuel for the drying of the sludge. The dried sludge is mixed with other agriculture/livestock farming waste and composted through a long time. In the starch manufacture waste water treatment, a solid substance is separated from heated starch manufacture waste water, the residual liquid is flashed under a reduced pressure to be cooled and the steam produced by the flashing is brought into contact with freshly supplied starch manufacture waste water to increase the temperature of the starch manufacture waste water. PCOPYRIGHT: (C)2005,JPO&NCIPI