| 摘要 |
PCT No. PCT/NL81/00019 Sec. 371 Date Feb. 18, 1982 Sec. 102(e) Date Feb. 18, 1982 PCT Filed Jul. 20, 1981 PCT Pub. No. WO82/00633 PCT Pub. Date Mar. 4, 1982.Method for cleaning waste water, wherein the waste water (19) and oxygen gas (31) are flowing in opposite directions through a cylindrical multireactor (20) having a central rotatable pipe (24), the multireactor comprising a number of bioreactors and at least one separation chamber (75). The average pressure difference between two successive bioreactors is at most seven meter water column. The bioreactors are separated from each other by stationary walls (40, 41, 48, 55, 60), and each bioreactor has its own mixing device (50) for mixing waste water and oxygen gas.
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