Copper is a common material in building plumbing system. Copper pipes corrode in different ways wich have consequences for the useful life of the pipe and also for water quality. From a water quality point of view, the uniform corrosion is of imponance. This type of corrosion, resulting in high copper content, is common at […]
Författare EVA LINDJOHANSSON, TORSTEN HEDBERG, BO BERGHULT
By order of the Environment and Health Committy in the Community of Ljusnarsberg and as a part of the Community’s work for public health the Environment and Health Department has, during 1992, made an inquiry about the consumption habits of inland sea fish among sports fishermen living in the Community of Ljusnarsberg. The purpose of […]
Författare ANNELIE OLOFSSON, LARS WESTHOLM, EDVARD LIDÉN
Experiments with nitrification of reject water by use of SBR technics at Bromma sewage treatment plant have shown that it is possible to obtain a complete nitrification at high reaction rates. The oxygen concenration was the main operational parameter that mfluenced the nitrification rate. Moreover the initialammonium concentration had a certain influence. The experiments showed […]
Författare AGNES MOSSAKOWSKA, BENGT HULTMAN, LARS-GUNNAR REINIUS
There is an increasing need for rapid sandfilters in sewage treatment plants due to more stringent requirements on the quality of the treated water. Besides sandfilters could possibly be used for other treatment processes such as chemical precipitation or denitrification. These factors imply a heavy load of suspended particles on the sandfilters making the flushing […]
Samples of incoming raw sewage vater have been collected on a five day basis every week during six months, and analyzed for seven heavy metals. A few determinations of other elements have also been made. These data have been combined with the results of the compulsory analytical control of effluent water and sludge to calculate […]
A wetland area, including 22 ha of shallow ponds, channels and Inundated fenlands, has been created during 1993 adjacent to the town of Oxelösund (12500 inhabitants) on the Baltic coast of Sweden. The primary goal with the wetland is an annual removal of 22 tonnes of nitrogen from pretreated wastewater from the towns treatment plant. […]
Författare HANS BERTIL WITTGREN, HANS WALLIN, PETER RIDDERSTOLPE och CHARLOTTE GUNSELL
The waste water treatment plant in Mindelo is oversized, with high evaporation and increasing salinity in the effluent water as a result. By subdividing the ponds with a plastic barrier, a much smaller volume is needed to achieve acceptable bacterial concentrations in the effluent water. The technique of subdividing ponds with a plastic barrier is […]
Författare PER JOHANSSON, STAFFAN BENGTSSON, MIKAEL RÅNGEBY, PATRIK JOHANSSON and MARIE PERNRUP
The paper summarizes a research investigarion of 51 river basin entities in Sweden. These entities cover about 2/3 of the total land area. A questionnaire was sent to the entities. The member circle is multifold, but the most common combination is composed of representatives from local municipalities, industries and a few authorities. The questionnaire reveals […]
Vi använder cookies för att förbättra användarupplevelsen. Genom att använda den här webbplatsen accepterar du användandet av cookies.Jag förstårLäs mer
Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.
Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.