A novel and cost-effective sewage treatment system consisting of UASB pre-treatment and aerobic post-treatment units for developing countries

被引：26

作者：

Machdar, I ^{[1
]}

Harada, H

Ohashi, A

Sekiguchi, Y

Okui, H

Ueki, K

机构：

[1] Nagaoka Univ Technol, Dept Environm Syst Engn, Nagaoka, Niigata 94021, Japan

[2] Tokyo Construct Co Ltd, Civil Engn Technol Dept, Tokyo 150, Japan

来源：

WATER SCIENCE AND TECHNOLOGY | 1997年 / 36卷 / 12期

关键词：

UASB reactor; anaerobic treatment; aerobic post-treatment; sewage treatment; appropriate technology; DHS reactor; nitrification; developing countries;

D O I：

10.1016/S0273-1223(97)00739-7

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：

A novel sewage treatment system was proposed, which consists of a UASB anaerobic pretreatment unit and the following DHS (downflow hanging sponge-cubes) aerobic posttreatment unit, as a low-cost and easy-maintenance process for developing countries. Over six months experiment by feeding sewage our proposed system achieved 94% of total-GOD removal, 81% of soluble-GOD removal, and nearly perfect SS removal and total-BOD removal at the overall HRT of 8.3 hr (7 hr in UASB and 1.3 hr in DHS unit). Moreover, the DHS reactor was capable of performing high (73-78%) nitrification. Our whole system requires neither external aeration input nor withdrawal of excess sludge. (C) 1997 IAWQ.

引用

页码：189 / 197

页数：9

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