Long term experience with Germany’s largest membrane filtration plant for drinking water production (7,000 m3/h)
© DIV Deutscher Industrieverlag GmbH (9/2009)
Currently, around 100 membrane filtration plants are in operation in Germany, of which 85 % are operated with low pressure porous microfiltration (MF) and ultrafiltration (UF) membranes. About 90 % of the total number of plants uses spring and well water as a raw water resource and just 7 % are fed with reservoir water. However, related to the total capacity of roughly 325,000 m3 produced drinking water per day by porous membranes in Germany about 60 % is from reservoir water, meaning a lot of water is produced by a small number of large plants.

Raw water quality prognosis
© DIV Deutscher Industrieverlag GmbH (9/2009)
Hydrogeochemical modelling of raw water quality – a planning and forecasting tool

Drinking water policy
© Aristotle University of Thessaloniki (6/2009)
It is widely known that disinfection of drinking water is necessary to ensure clean water and safeguard the public from waterborne diseases such as typhoid, cholera, and dysentery. The most common disinfection practice is chlorination. For centuries it was considered as the safest disinfectant to protect the urban population from fatal diseases. In the decade of 1970 the first questions about the chlorination and its impact on human health was raised. After that, a bulk of literature has emerged and surveys have been carried out in order to investigate the possible effect of disinfection by-products (DBPs).

Self-cleaning data logger measurements of long-term (2002 to 2006) variation in chlorophyll a concentration in the Uwa Sea, southwestern Japan
© Aristotle University of Thessaloniki (6/2009)
We monitored long-term variation (January 2002 to November 2007) in chlorophyll a concentrations at a pearl oyster aquaculture facility in the Uwa Sea, southwestern Japan using a self-cleaning data logger. The logger enabled continuous measurements at 10 min intervals. Such high measurement frequency is not possible using previous methods, e.g., remote sensing of satellite ocean color or spectrophotometry.

Spatio-temporal variation in water quality of Malad creek, Mumbai, India using geospatial tools
© Aristotle University of Thessaloniki (6/2009)
Presently Malad creek in west coast of Mumabi, India receives wastewater from non-point pollution sources, open drains and partially treated sewage from Malad and Versova treatment facilities. The objective of study is to assess the spatio - temporal variations of water quality parameters and level of pollution in creek during low and high tides.

Geostatistical analysis for assessing eutrophication trends: a case study in the Strait of Lesvos, Greece
© Aristotle University of Thessaloniki (6/2009)
Available oceanographic information of the Eastern Mediterranean indicates low nutrient and primary productivity values as well as low benthic and fish biomass. However, inshore waters are strongly influenced by urbanisation and industrial activities leading to the degradation of the ecological status of the estuarine and coastal systems. In this study, water samples were collected in the coastal area of the Strait of Lesvos, Greece in July 2008 anddetermination of chlorophyll a and Dissolved Inorganic Nitrogen concentrations was performed.

Smart structure monitoring using robust control
© Aristotle University of Thessaloniki (6/2009)
A “smart” structure is one that monitors itself and its environment in order to respond to changes in its conditions. Smart infrastructure systems are a combination of smart structures and the management systems that operate them. In this paper a “smart” system is considered with embedded piezoelectric sensors and actuators. External disturbances are rejected by using controllers, which in practice are based on applied voltages on the actuators.

Treatment of ammonia-polluted groundwater in North Bohemian brown coal mining region
© Aristotle University of Thessaloniki (6/2009)
A feasibility study was completed to assess the applicability of two groundwater treatment technologies at the site, where a brown coal processing plant released 4000 tons of ammonia into the subsurface. The present groundwater ammonia concentration (approx. 100 ppm) was required to be reduced to 0.5 ppm to satisfy the Czech groundwater remediation directives.

Land degradation due to diapirs in Iran, case study: Hableh-Rood Drainage Basin, East of Tehran
© Aristotle University of Thessaloniki (6/2009)
Different geological characteristics play role in land degradation in Iran which are: 1-The abundance of Neogene evaporitic marly formations around and in desertic depression. These units have had important role in the formation of present landforms, are saline, alkaline and erodible and degrade the quality of water resources as diffuse and widespread sources. 2- The presence of numerous diapirs, some of which are salt domes consisting of halite.

An approach for sustainable management of the Balikligol lakes, Turkey
© Aristotle University of Thessaloniki (6/2009)
The Balikligol Lakes in Sanliurfa, Turkey (Lake Ayn-i Zeliha and Lake Halil-ur Rahman) are freshwater lakes, which possess not only environmental value but also touristic value due to their natural aquarium look and their historical and sacred status in the past and present. From time to time, fish deaths have been encountered in these lakes. Deteriorating water quality could harm the health of the fishes in the water. Therefore, the water quality at both of the lakes needs to be monitored. The pollution at the lakes exceeding the acceptable levels endangers the sustainable management of the living creatures.

<  1  2  3  4 . . . . >


 Keep me signed in

Forgot your password?