发明名称 |
METHOD AND APPARATUS FOR NITRATION-DENITRIFICATION USING BIOLOGICAL MEMBRANE |
摘要 |
<p>PURPOSE:To downsize equipment and to improve the recovery ratio of treated water. CONSTITUTION:Raw water is supplied from a raw water supply part 11 at the upper end of a nitrification-denitrification biological membrane filter bed 3 in which an aerobic biological membrane filter bed 1 is installed on the upper stage and an anaerobic biological membrane filter bed 2 is installed on the lower stage to nitrify MH4-N. The nitrified liquid, after being mixed with a hydrogen donor, is denitrified in the lower stage. The anaerobically treated water is returned to the upper end of the nitrification-denitrification biological membrane filter bed 1 by a circulating pump 6 and discharged as treated water from a treated water discharge part 12 placed between the upper and lower stages.</p> |
申请公布号 |
JPH07204686(A) |
申请公布日期 |
1995.08.08 |
申请号 |
JP19940005702 |
申请日期 |
1994.01.24 |
申请人 |
NGK INSULATORS LTD |
发明人 |
TOMITA YOSHIO;NAKAYAMA YOSHIHIKO |
分类号 |
C02F3/06;C02F3/28;C02F3/34;(IPC1-7):C02F3/34 |
主分类号 |
C02F3/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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