On-site greywater treatment and reuse in multi-storey buildings

被引：131

作者：

Friedler, E ^{[1
]}

Kovalio, R ^{[1
]}

Galil, NI ^{[1
]}

机构：

[1] Technion Israel Inst Technol, Fac Civil & Environm Engn, IL-32000 Haifa, Israel

来源：

WATER SCIENCE AND TECHNOLOGY | 2005年 / 51卷 / 10期

关键词：

biological treatment; greywater reuse; on-site; pilot plant; quality; RBC; sand filtration;

D O I：

10.2166/wst.2005.0366

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 [工学]; 0830 [环境科学与工程];

摘要：

The paper presents a study of a pilot plant treating light greywater for seven flats. The pilot plant combines biological treatment (RBC) with physicochemical treatment (sand filtration and disinfection). The pilot plant produced effluent of excellent quality, meeting the urban reuse quality regulations, and was very efficient in TSS turbidity and BOD removal: 82%, 98% and 96%, respectively. COD removal was somewhat lower (70-75%) indicating that the greywater may contain slowly-biodegradable organics. The RBC (attached growth biological system) was able to retain most of the solids as a result of bioflocculation; further it was proven to have very stable and reliable performance. Faecal coliforms and heterotrophic reductions were very high (100% and 99.99%, respectively) producing effluent that also met drinking water standards. The combination of low organic matter, nutrients and microbial indicators reduces the regrowth and fouling potentials in the reuse system, thus ensuring safe reuse of the treated greywater for toilet flushing.

引用

页码：187 / 194

页数：8

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