Optimization of coagulation at chemical wastewater treatment plants is becoming more important with the increasing demand for better effluent quality, sustainable utilization of resources and reduced operational cost. Recent advances in on-line instrumentation, modeling technology and computer and telecommunication techniques lead to a possibility in constructing a more robust model for coagulant dosage control based […]
Författare L. LU, H. RATNAWEERA and O. LINDHOLM
Nyckelord (Keyword) Coagulation, model, wastewater treatment, real time control.
EXPERIENCES OF CONSTRUCTED WETLANDS FOR THE TREATMENT OF NITROGEN IN LANDFILL LEACHATE / Erfarenheter av konstruerade våtmarker för behandling av kväve i lakvatten
This article reviews the worldwide experiences on possibilities of using constructed wetlands for landfill leachate treatment. On-site “high-tech” leachate treatment systems are often avoided due to large construction and operating costs. Two questions that are crucial for the success of constructed wetlands in future landfill leachate treatment are addressed—(i) does nitrification/denitrification occur and can it […]
Författare AGNIESZKA KIETLINSKA
Nyckelord (Keyword) ammonium-nitrogen; constructed wetlands; denitrification; ecotechnology; landfill leachate; removal processes; treatment.
ETT FLÖDESSCHEMA FÖR INTEGRERAD VATTENFÖRVALTNING OCH OPERATIVT GENOMFÖRANDE AV RAMDIREKTIVET FÖR VATTEN / A flowchart for integrated water management and operative implementation of the Water Framework Directive
Water management, monitoring and regulation, as well as research and education are traditionally fragmented among many different sectors, authorities, and scientific disciplines. We present and describe here a basic methodology for integrated water management, in terms of a concrete flowchart that: (a) is generally applicable to and thereby integrates different types of decision problems, including […]
Författare GEORGIA DESTOUNI, FREDRIK HANNERZ, VLADIMIR CVETKOVIC, BJÖRN FROSTELL och BENGT HULTMAN
Nyckelord (Keyword) River basin management. Integrated Water Resources Management, Water Framework Directive, management plan, action plan, monitoring, water quality, water quantity.
VÅTMARKER – NÄRSALTSFÄLLOR OCH/ELLER MYLLRANDE MÅNGFALD? / Wetlands – nutrient sinks and/or biodiversity sources?
This paper summarizes the state-of-the-art with respect to wetlands for nutrient removal and biodiversity enhancement, as expressed at a research workshop in December 2002. In the end of 2002, 260 and 884 wetlands had been constructed in Sweden with subsidies from LIP and the European Union, respectively. Most frequently, the aims were to remove nutrients […]
Författare TONDERSKI, K. S., SVENSSON, J. M., EKSTAM, B., ERIKSSON, P. FLEISCHER, S., HERRMANN, ]., SAHLEN, G. och WEISNER, S. E. B.
Nyckelord (Keyword) Biologisk mångfald, denitrifikarion, hydraulisk belastning, jordbrukslandskap, kväve, fosfor, sedimentation, våtmarker, vegetation
EFFECTS OF AN ORGANOTIN PVC STABILISER ON ANOXIC DEGRADATION OF ORGANIC MATTER / Effekter av en tennorganisk PVC stabilisator på den syrefria nedbrytningen av organiskt material
Many organotin compounds are toxic, thus their occurrence in the environment is of considerable concern, and several of these substances are regarded as priority pollutants that require further investigation. Organotins are used primarily as heat stabilisers in PVC plastic, and they are therefore found in landfills in which discarded PVC products have been deposited. In […]
Författare ANNIKA FREDRIKSSON. GUSTAV NESTOR and BO H. SVENSSON
Nyckelord (Keyword) biodegradarion, 2-ethylhexanoic acid, landfill microorganisms, inhibition of methane formation, methyl tins, PVC, tin stabilisers, volatile fatty acids.