Process for treating sewage with zeolite filler in aerated biologic filter pool and zeolite filler
Title:
Process for treating sewage with zeolite filler in aerated biologic filter pool and zeolite filler
Application Number:
02116307
Application Date:
2002/03/22
Announcement Date:
2002/09/18
Pub. Date:
Publication Number:
1369440
Announcement Number:
1151085
Grant Date:
2004-5-26
Granted Pub. Date:
2004-5-26
ApplicationType:
Invention
State/Country:
11[China|beijing]
IPC:
C02F 3/08, C02F 3/10, C02F 3/34
Applicant(s):
Qinghua Univ
Inventor(s):
Tian Wenhua, Wen Xianghua, Qian Yi
Key Words:
treating process, sewage, zeolite filler, aerated biologic filter pool
Abstract:
A process for treating sewage zeolite as filter material in aerating biological filter pool is disclosed. It features that the life sewage to be treated contains COD (40-120 mg/L) and ammonacal nitrogen (10-40 mg/L), the height of filter material is 2-4 m, hydraulic load is 2-5 m/h, the intensity for pneuamtic-hydraulic counter-flushing is 12-18L/sq.ms, the water flushing intensity is 8-12 L/sq.m.s, and the water rinsing intensity is 8-12 L/sq.ms. The zeolite has 3-6 mm for granularity, 1900-2200 Kg/cu.m for density, 3-5 for Mohs'hardness and 3-6 kg/cu.m for ammonia ion exchange capacity. Its advantages are high effect and high impact resistance.
Claim:
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PCT:
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