The Bremen Overseas Research and Development Association (BORDA) has a mission to improve the living conditions of disadvantaged communities and to preserve the environment through decentralized sanitation projects. As part of this mission, the Association has developed modular, decentralized, and cost-effective wastewater treatment service packages that they have termed ‘DEWATS’ – decentralized wastewater treatment systems, which, with the help of funding agencies, are being installed throughout Asia and Africa.
The challenge: Conquer the elements, conserve resources
ANDRITZ heavy duty belt press
The Ukhaa Khudag coal mine lies in the heart of one of the harshest climate zones on earth: the southern Gobi desert. In the winter, its pipelines and coal tailings dam would freeze. In the summer, much of its water would evaporate. Faced with these extreme conditions, the mine needed the most robust equipment available to separate water from its tailings for reuse in the coal handling process.To succeed, the customer demanded:...
The challenge: coping with increasing effluent in line with legislation
TurboJet weir plate
RHV STEYR, a community environmental association serving the city of STEYR (Austria) and several neighboring villages, enlarged and modernized its sewage treatment facility to cope with the ever increasing requirements of more stringent legislation in the face of rising effluent levels and thus, increasing amounts of sludge. the city has benefitted from its experience in heavy industry and production of various commoditi...
Separate and filterA more profitable approach to potash dewatering
ANDRITZ Puaher Centrifuge
The challenge: A leap forward in capacity, cost efficiency, and quality
At many mining refineries, the overall aim in dewatering is simple: to profitably produce huge total volumes with easy handling and minimal maintenance. Equipped mainly with thickeners and flow-operated vacuum filters, it is a continuous process with little room for improvements that boost margins.
Belaruskali, one of the world`s largest potash...
Decentralized wastewater treatment systems (DEWATS) using anaerobic treatment are increasingly being considered for wastewater treatment with options for non-potable water reuse at the community scale. One challenge for ensuring performance and reliability of DEWATS is the lack of suitable on-site sensors to monitor failure or contamination events. In this study, the aim was to use in situ fluorescence sensors to track the performance of a DEWATS, consisting of an anaerobic baffled reactor (ABR) coupled to...
Rehabilitation of dams and levees present complex geotechnical conditions. Contractors require dry, safe and stable working environments in order to carry out an effective rehabilitation project.
As our national dam and levee infrastructure ages, the pressure to stabilize construction sites and lower costs will rise. Eductor systems provide a safe, cost-effective dewatering solution for these high-risk projects.
First, a series of eductor wells are drilled and connected to a common header. High pressure water...
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