Germany creates sewage backwash sand filter affordable backwash sand filter for developing countries - Enviro2B | Enviro2B
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Institute of Hydraulic Engineering and urban water conservation and waste (ISWA) of the German University of Stuttgart has established its sewage treatment plant Stuttgart-Büsnau experimental pilot plant, in which can be studied purification by trickling in high temperature conditions. The results of this project, supported by the German Federal Ministry of Education and Research (BMBF), could help developing countries in developing this purification technology already widely used in temperate zones.
The technique of trickling filter is one of the oldest methods of wastewater treatment. It consists of flowing water to be treated by means of a rotary distributor in a concrete backwash sand filter tank provided with vent holes and filled with a permeable material. The continuous supply of nutrients allows the growth of microorganisms. These adhere to the surface of the filling material and form a biofilm, by means of which the organic substrates in water is degraded. An unlimited supply of nutrients, backwash sand filter however, can cause an overgrowth of biofilm, backwash sand filter which can lead to bottlenecks and reduced aeration. Then form zones of anoxia causing odors and decreased performance. High temperatures, which accelerate the growth of microorganisms including, amplify this phenomenon.
Design backwash sand filter methods trickling facilities used in Europe and America are keyed to temperate temperatures and do not take into account climatic differences. If these approaches are transferred to developing countries with hot climates, the stations become oversized and expensive. To fill this gap and study the techniques of purification trickling backwash sand filter in hot, ISWA scientists have developed a semi-industrial trickling in a climate chamber. By the means of heat exchangers, the air temperature is maintained at 30 C and that of water at 25 C. To compare backwash sand filter different filling backwash sand filter materials, researchers backwash sand filter conduct their experiments on parallel slag and synthetic material.
To analyze the results, the scientists compared the performance curves of the experimental stations with those of conventional German backwash sand filter design. They, among others, found that the mere consideration of the removal of CO2 reduces by 60% the volume of the trickling filter installation, which allows backwash sand filter stations to build cheaper in countries with hot climate . In addition, the method is simple, reliable, has fewer parts subject to wear, and is therefore particularly suitable for use in developing countries.
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Home News Air Water Waste & Energy Nature Health Sites Urban Ecology & Society News Air Waste Water Energy & Ecology Health Nature Company Info Wire Urban Transport Forum Tribune Business Job Interview
Institute of Hydraulic Engineering and urban water conservation and waste (ISWA) of the German University of Stuttgart has established its sewage treatment plant Stuttgart-Büsnau experimental pilot plant, in which can be studied purification by trickling in high temperature conditions. The results of this project, supported by the German Federal Ministry of Education and Research (BMBF), could help developing countries in developing this purification technology already widely used in temperate zones.
The technique of trickling filter is one of the oldest methods of wastewater treatment. It consists of flowing water to be treated by means of a rotary distributor in a concrete backwash sand filter tank provided with vent holes and filled with a permeable material. The continuous supply of nutrients allows the growth of microorganisms. These adhere to the surface of the filling material and form a biofilm, by means of which the organic substrates in water is degraded. An unlimited supply of nutrients, backwash sand filter however, can cause an overgrowth of biofilm, backwash sand filter which can lead to bottlenecks and reduced aeration. Then form zones of anoxia causing odors and decreased performance. High temperatures, which accelerate the growth of microorganisms including, amplify this phenomenon.
Design backwash sand filter methods trickling facilities used in Europe and America are keyed to temperate temperatures and do not take into account climatic differences. If these approaches are transferred to developing countries with hot climates, the stations become oversized and expensive. To fill this gap and study the techniques of purification trickling backwash sand filter in hot, ISWA scientists have developed a semi-industrial trickling in a climate chamber. By the means of heat exchangers, the air temperature is maintained at 30 C and that of water at 25 C. To compare backwash sand filter different filling backwash sand filter materials, researchers backwash sand filter conduct their experiments on parallel slag and synthetic material.
To analyze the results, the scientists compared the performance curves of the experimental stations with those of conventional German backwash sand filter design. They, among others, found that the mere consideration of the removal of CO2 reduces by 60% the volume of the trickling filter installation, which allows backwash sand filter stations to build cheaper in countries with hot climate . In addition, the method is simple, reliable, has fewer parts subject to wear, and is therefore particularly suitable for use in developing countries.
Recent comments civis pacem parabelum in SAUR - 200,000 euros bonus for the President in BIOCLIM DELPHINE BATHO - The Grenelle a "shot com" in BIOCLIM DELPHINE BATHO - The Grenelle a "shot com" Hunter real estate Pollution: run Paris becomes dangerous to Thomas Ayoub Why ban open fires in the city open is good news
Read articles this week a U.S. laboratory misplaces a deadly virus to 9.682 (s) fruits and vegetables, covered with bacteria 7.969 view (s) Influenza: a problem of preparation made the vaccine less effective for 4.813 (s) An early spring icy: the fault of global warming? 1.964 view (s) Tobacco: cars, parks, stadiums ... soon places non-smokers? backwash sand filter 1.575 view (s)
agriculture Areva Air Supply Business climate co2 sustainable communities waste-water backwash sand filter development environment europe finance edf gas management innovation international justice Wed Nature appointment nuclear pollution prevention policy gmo oil recycling research health risks solar heating area transport planning regulations USA ecology electricity energy energy renewable wind-
[Contact] [Login] [Contact] backwash sand filter [Forum] [Glossary] [Links] [Legal] [Newsletter] [Participate] backwash sand filter [Advertising] [Who are we? ] [Signup] [Polls] [Video] [RSS] Login / Enviro2b
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