Waste Management
... • The Basel Convention on the Control of Transboundary Movements of Hazardous Wastes and Their Disposal, usually known simply as Basel Convention, is an international treaty that was designed to reduce the movements of hazardous waste between nations, specially to prevent transfer of hazardous waste ...
... • The Basel Convention on the Control of Transboundary Movements of Hazardous Wastes and Their Disposal, usually known simply as Basel Convention, is an international treaty that was designed to reduce the movements of hazardous waste between nations, specially to prevent transfer of hazardous waste ...
Environmental and Experimental Botany 75
... for large scale eutrophication of water bodies (Muñoz and Guieysse, 2006), a fundamental goal for developing a green technology for environmental application is to generate little or no secondary pollution (Henze et al., 2002). In the European Union, additional options are being considered: land re ...
... for large scale eutrophication of water bodies (Muñoz and Guieysse, 2006), a fundamental goal for developing a green technology for environmental application is to generate little or no secondary pollution (Henze et al., 2002). In the European Union, additional options are being considered: land re ...
Ultrasound Assisted Method to Increase the Aluminum Dissolve
... sludge may easily dissolve in a strong alkaline solution, inhibiting the recovery of the aluminum. Accordingly, the acidification process is generally more convenient and more efficient than the basification process for recovering aluminum from sludge. Additionally, the size of the sludge particles ...
... sludge may easily dissolve in a strong alkaline solution, inhibiting the recovery of the aluminum. Accordingly, the acidification process is generally more convenient and more efficient than the basification process for recovering aluminum from sludge. Additionally, the size of the sludge particles ...
An integrated limestone/lime process for partial sulphate
... reduced further to 1 200 mg/l through gypsum crystallization and magnesium precipitation ➤ Scaling and corrosion problems are reduced during reuse of the water in the mines ➤ Discharge water needs to meet certain quality requirements in accordance with environmental ...
... reduced further to 1 200 mg/l through gypsum crystallization and magnesium precipitation ➤ Scaling and corrosion problems are reduced during reuse of the water in the mines ➤ Discharge water needs to meet certain quality requirements in accordance with environmental ...
Primary and Secondary Succession
... ecological succession. Over the course of succession, the number of different species usually increases. Primary succession begins in areas with no remnants of an older community. It occurs on bare rock surfaces where no soil exists. The first species to live in an area of primary succession are cal ...
... ecological succession. Over the course of succession, the number of different species usually increases. Primary succession begins in areas with no remnants of an older community. It occurs on bare rock surfaces where no soil exists. The first species to live in an area of primary succession are cal ...
HillerNeponsetReport - BIOEEOS660-f12
... human additions of limiting nutrients (in this case, N) that incredase primary production from baseline levels sustained by nutrient recycling and N-fixation. Humans have increased the transfer of nitrogen through rivers like the Neponset to estuaries (Vitousek et al. 1997). Adding nitrogen causes ...
... human additions of limiting nutrients (in this case, N) that incredase primary production from baseline levels sustained by nutrient recycling and N-fixation. Humans have increased the transfer of nitrogen through rivers like the Neponset to estuaries (Vitousek et al. 1997). Adding nitrogen causes ...
elimination of odor and hydrogen sulfide gas by superoxygenation
... enhance biological processes, relying instead on direct reaction with sulfides after they have formed, rather than preventing sulfide formation. SuperOxygenation has the benefit of beginning the treatment process in the collection system, while preventing odors from forming. SuperOxygenation is a gr ...
... enhance biological processes, relying instead on direct reaction with sulfides after they have formed, rather than preventing sulfide formation. SuperOxygenation has the benefit of beginning the treatment process in the collection system, while preventing odors from forming. SuperOxygenation is a gr ...
Membrane bioreactor system for treating synthetic oilfield
... wastewater (at least 3.5% w/v total dissolved solids), indigenous and natural tropical halophilic microorganism consortium was isolated and bioreactor was inoculated with it. Hypersaline soil from marine sediment in Malaysia served as a source of tropical halophilic microorganisms. ...
... wastewater (at least 3.5% w/v total dissolved solids), indigenous and natural tropical halophilic microorganism consortium was isolated and bioreactor was inoculated with it. Hypersaline soil from marine sediment in Malaysia served as a source of tropical halophilic microorganisms. ...
Secondary treatment
Secondary treatment is a treatment process for wastewater (or sewage) to achieve a certain degree of effluent quality by using a sewage treatment plant with physical phase separation to remove settleable solids and a biological process to remove dissolved and suspended organic compounds. After this kind of treatment, the wastewater may be called as secondary-treated wastewater.Secondary treatment is the portion of a sewage treatment sequence removing dissolved and colloidal compounds measured as biochemical oxygen demand (BOD). Secondary treatment is traditionally applied to the liquid portion of sewage after primary treatment has removed settleable solids and floating material. Secondary treatment is typically performed by indigenous, aquatic microorganisms in a managed aerobic habitat. Bacteria and protozoa consume biodegradable soluble organic contaminants (e.g. sugars, fats, and organic short-chain carbon molecules from human waste, food waste, soaps and detergent) while reproducing to form cells of biological solids. Biological oxidation processes are sensitive to temperature and, between 0 °C and 40 °C, the rate of biological reactions increase with temperature. Most surface aerated vessels operate at between 4 °C and 32 °C.