THE STAGING OF LARGE WASTE-WATER TREATMENT PLANTS - A MODULAR APPROACH

被引：1

作者：

FLECKSEDER, H ^{[1
]}

PRENDL, L ^{[1
]}

MEULENBROEK, H ^{[1
]}

机构：

[1] AQUA ENGN GESMBH,A-5020 SALZBURG,AUSTRIA

来源：

WATER SCIENCE AND TECHNOLOGY | 1992年 / 25卷 / 4-5期

关键词：

ACTIVATED SLUDGE TREATMENT; INCREASE IN EFFLUENT REQUIREMENTS OVER TIME; DECREASE IN IMPORTANCE OF PRIMARY SEDIMENTATION; AUSTRIAN EXPERIENCE; IMPORTANCE OF PLANT HYDRAULICS TO FACILITATE EASY PLANT EXPANSION;

D O I：

10.2166/wst.1992.0482

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The primary driving force for re-investments in wastewater treatment plants in Austria - and also other countries in Central Europe - is at present not an increase in load to treatment but a marked increase in effluent requirements to be fulfilled. (The re-investments necessary for sludge handling and treatment remain outside this paper.) Within a period of 20 years, the load specific requirements on aeration tank volume rose five- to tenfold, when L(V) = 2.0 kg BOD5/(m3d) was the starting value, and roughly doubled for final clarifiers. In addition, the importance of the application and expansion of primary sedimentation decreased as well. This development over time in Central European countries as well as the need to utilize previous investments as long as possible - 35 to 60 years for civil works are common as periods of depreciation - indicate that investments in new plant at any location in the world have to consider the possible whole life cycle of a plant and that plant hydraulics becomes the "key hook" for expandability.

引用

页码：67 / 73

页数：7