Characterization of nitrifying bacteria in marine recirculation
... biofilters of marine recirculation aquaculture systems (RAS) and the bacteria involved, with special emphasis on the possible causes of malfunction of the crucial conversion of ammonia to nitrate. Three marine RAS with in total five moving-bed biofilters were made available for the investigations by ...
... biofilters of marine recirculation aquaculture systems (RAS) and the bacteria involved, with special emphasis on the possible causes of malfunction of the crucial conversion of ammonia to nitrate. Three marine RAS with in total five moving-bed biofilters were made available for the investigations by ...
Microalgae Cultivation in Wastewater for Nutrient Removal
... Wastewater is the spent or used water containing dissolved or suspended solids such as pollutants and microbes, including nutrients. The wastewater discharged into the water bodies are hazardous to environment and cause various health problems in human beings. Eutrophication is one such major enviro ...
... Wastewater is the spent or used water containing dissolved or suspended solids such as pollutants and microbes, including nutrients. The wastewater discharged into the water bodies are hazardous to environment and cause various health problems in human beings. Eutrophication is one such major enviro ...
Isolation of Thiobacillus sp from aerobic sludge of distillery and dairy
... reactors were operated for a period of 168 hr with different initial sulfide concentrations of 75 mg/l and 150 mg/l respectively. The sulfide oxidation pattern for the IICT-SOB-DIST-210 at two different concentrations at the end of the experiment, after 168 hr is shown in Fig. 2. At the end of 168 h ...
... reactors were operated for a period of 168 hr with different initial sulfide concentrations of 75 mg/l and 150 mg/l respectively. The sulfide oxidation pattern for the IICT-SOB-DIST-210 at two different concentrations at the end of the experiment, after 168 hr is shown in Fig. 2. At the end of 168 h ...
Methanol removal from methanol-water mixture using
... Abstract Methanol plants produce large volume of wastewater containing less than 10% methanol during the startup and shut-down operations, such amount is considered as an industrial waste problem. An experimental work has been carried out in order to examine the removal of methanol from methanol-wat ...
... Abstract Methanol plants produce large volume of wastewater containing less than 10% methanol during the startup and shut-down operations, such amount is considered as an industrial waste problem. An experimental work has been carried out in order to examine the removal of methanol from methanol-wat ...
Use of ozone in the food industry
... equipment (Troller, 1993). Radiation methods are not practical for use in food processing plants because of the inherent hazards associated with radioactive materials. Chemical sanitation methods are the most commonly utilized sanitizers in the food industry. Chlorinated agents are used worldwide fo ...
... equipment (Troller, 1993). Radiation methods are not practical for use in food processing plants because of the inherent hazards associated with radioactive materials. Chemical sanitation methods are the most commonly utilized sanitizers in the food industry. Chlorinated agents are used worldwide fo ...
Extract from EPA Batneec Guidance Note For The Extraction of
... granting of a licence for a specific site. The approach to be used in selecting BATNEEC is based on the following hierarchy: ...
... granting of a licence for a specific site. The approach to be used in selecting BATNEEC is based on the following hierarchy: ...
Biofilms in Nitrogen Removal
... (2008) stated that ”There is no other variable of such importance to coastal marine ecosystems that has changed so drastically over such a short time as dissolved oxygen” (DO). This is especially pronounced in the bottom waters, where oxygen availability may already be scarce (Conley et al., 2009). ...
... (2008) stated that ”There is no other variable of such importance to coastal marine ecosystems that has changed so drastically over such a short time as dissolved oxygen” (DO). This is especially pronounced in the bottom waters, where oxygen availability may already be scarce (Conley et al., 2009). ...
Assignment MSWord - Technical Learning College
... 7. The ______________, generally grouped into the red and green sulfur bacteria and represented by about 28 genera, oxidize reduced sulfur compounds (H2S) using light energy to produce sulfur and sulfate, A. Anaerobic sulfur bacteria D. Anaerobes or microaerophilic B. Photosynthetic bacteria E. Ana ...
... 7. The ______________, generally grouped into the red and green sulfur bacteria and represented by about 28 genera, oxidize reduced sulfur compounds (H2S) using light energy to produce sulfur and sulfate, A. Anaerobic sulfur bacteria D. Anaerobes or microaerophilic B. Photosynthetic bacteria E. Ana ...
Infection Control Today - 03/2002: Follow Standard Precautions
... destroying microorganisms, and a temperature of at least 160ºF for a minimum of 25 minutes is commonly recommended for hot-water washing. Chlorine bleach provides an extra margin of safety. A total available chlorine residual of 50-150ppm is usually achieved during the bleach cycle. The last action ...
... destroying microorganisms, and a temperature of at least 160ºF for a minimum of 25 minutes is commonly recommended for hot-water washing. Chlorine bleach provides an extra margin of safety. A total available chlorine residual of 50-150ppm is usually achieved during the bleach cycle. The last action ...
Treatment of communal sewage sludge: quantities, recent
... machine thickening is gaining more significance with e.g. non-stabilised sludge, that could rot during the storage. ...
... machine thickening is gaining more significance with e.g. non-stabilised sludge, that could rot during the storage. ...
Core Microbial Functional Activities in Ocean Environments
... (p #0.01, and FDR-corrected; for details see Methods S1). This resulted in 649, 413, and 463 COGs for ATII, ALOHA and BATS, respectively. Of these, 176 COGs were present at all three sites (table S2 in file S1). We first performed hierarchical clustering on the normalized abundance data for these 17 ...
... (p #0.01, and FDR-corrected; for details see Methods S1). This resulted in 649, 413, and 463 COGs for ATII, ALOHA and BATS, respectively. Of these, 176 COGs were present at all three sites (table S2 in file S1). We first performed hierarchical clustering on the normalized abundance data for these 17 ...
Organochlorine compounds in wastewater
... phenols, catechols, and guaiacols. Of these, 13 compounds are predominant, and some were shown to be generated during the chlorine bleaching of chemical pulps. Extensive measurement of effluents from ECF bleach plants shows that these compounds are only very rarely detected at quantifiable levels (E ...
... phenols, catechols, and guaiacols. Of these, 13 compounds are predominant, and some were shown to be generated during the chlorine bleaching of chemical pulps. Extensive measurement of effluents from ECF bleach plants shows that these compounds are only very rarely detected at quantifiable levels (E ...
Exploris SectionI
... Wastewater is categorized as sanitary or industrial. Sanitary wastewater is the liquid material collected from residences, business buildings, and institutions. Industrial wastewater is the liquid material that is collected from industrial facilities such as food processing plants, laundromats, car ...
... Wastewater is categorized as sanitary or industrial. Sanitary wastewater is the liquid material collected from residences, business buildings, and institutions. Industrial wastewater is the liquid material that is collected from industrial facilities such as food processing plants, laundromats, car ...
Full-Text PDF
... avoiding its treatment within the activated sludge processes. Antimicrobial agents are among the most commonly used pharmaceuticals. However, although antibiotics are of great importance for human health, they can also be a great problem for the environment. During wastewater treatment, antibiotics ...
... avoiding its treatment within the activated sludge processes. Antimicrobial agents are among the most commonly used pharmaceuticals. However, although antibiotics are of great importance for human health, they can also be a great problem for the environment. During wastewater treatment, antibiotics ...
Biological Denitrification Using Upflow Biofiltration In Recirculating
... regularly seen (Figure 3a). However, effluent nitrite concentrations were greater than those measured during the lower nitrate loading, reaching values as high as 34 mg NO2N/L (Figure 3b). The presence of measurable COD in the effluent suggested that carbon limitation was not the problem (Figure 3c) ...
... regularly seen (Figure 3a). However, effluent nitrite concentrations were greater than those measured during the lower nitrate loading, reaching values as high as 34 mg NO2N/L (Figure 3b). The presence of measurable COD in the effluent suggested that carbon limitation was not the problem (Figure 3c) ...
Applying oxidation reduction potential sensors in biological
... energy, in the form of stored volatile fatty acids, for metabolism and growth. There is a large increase in the mass of phosphate consuming bacteria and these bacteria now absorb both the initial phosphate and reabsorb the phosphate released during anaerobic treatment. The phosphate is now part of t ...
... energy, in the form of stored volatile fatty acids, for metabolism and growth. There is a large increase in the mass of phosphate consuming bacteria and these bacteria now absorb both the initial phosphate and reabsorb the phosphate released during anaerobic treatment. The phosphate is now part of t ...
Nitrogen
... deficiency must be supplied from outside sources. Determinations of ammonia and organic nitrogen are normally made to obtain such data. Nitrogen is one of the fertilizing elements essential to the growth of algae. Such growth is often stimulated to an undesirable extent in bodies of water that recei ...
... deficiency must be supplied from outside sources. Determinations of ammonia and organic nitrogen are normally made to obtain such data. Nitrogen is one of the fertilizing elements essential to the growth of algae. Such growth is often stimulated to an undesirable extent in bodies of water that recei ...
18th International Conference on Bioencapsulation
... experiments. Microorganisms were immobilized following a described method (de-Bashan et al. 2004). For immobilization of the two microorganisms in the same bead, each was re-suspended in 10 mL 0.85% saline solution and then mixed in the alginate before the beads were formed. Microorganisms used in s ...
... experiments. Microorganisms were immobilized following a described method (de-Bashan et al. 2004). For immobilization of the two microorganisms in the same bead, each was re-suspended in 10 mL 0.85% saline solution and then mixed in the alginate before the beads were formed. Microorganisms used in s ...
CE5504 – Surface Water Quality Modeling
... Delete the State Variable OtherAlg1: [TSS Surrogate]. Under Water Volume, Inflow of Water, select Use Constant Loading. To be certain that you have the correct (i.e. default) mineralization coefficients, select Site and then Reload Remin. from DB and then OK (3 times). This is now a bare-bones Onond ...
... Delete the State Variable OtherAlg1: [TSS Surrogate]. Under Water Volume, Inflow of Water, select Use Constant Loading. To be certain that you have the correct (i.e. default) mineralization coefficients, select Site and then Reload Remin. from DB and then OK (3 times). This is now a bare-bones Onond ...
WASTEWATER TREATMENT Freshwater Water Quality 1. INDICATOR
... environmental standards before being discharged to the environment. Three broad types of treatment are distinguished: primary, secondary and tertiary. For purposes of calculating the total amount of treated wastewater, volumes and loads reported should be shown only under the "highest" type of treat ...
... environmental standards before being discharged to the environment. Three broad types of treatment are distinguished: primary, secondary and tertiary. For purposes of calculating the total amount of treated wastewater, volumes and loads reported should be shown only under the "highest" type of treat ...
Phosphorus Removal Guide for Wastewater Operators
... For bio-P bugs (aka PAOs, phosphate accumulating organisms) to remove phosphorus, they must first take in VFAs. This has to occur in a zero oxygen environment, but not necessarily the same place that VFAs are formed. The wastewater needs to contain approximately 25 times as much BOD as phosphorus i ...
... For bio-P bugs (aka PAOs, phosphate accumulating organisms) to remove phosphorus, they must first take in VFAs. This has to occur in a zero oxygen environment, but not necessarily the same place that VFAs are formed. The wastewater needs to contain approximately 25 times as much BOD as phosphorus i ...
Recent developments in biological nutrient removal
... membranes for solid-liquid separation. With aerobic granulation, the activated sludge process is controlled to form fastsettling granules comprising heterotrophs, nitrifiers, denitrifiers and phosphorus-accumulating organisms (PAOs) in a sequencing batch (SBR) type reactor – the granules not only se ...
... membranes for solid-liquid separation. With aerobic granulation, the activated sludge process is controlled to form fastsettling granules comprising heterotrophs, nitrifiers, denitrifiers and phosphorus-accumulating organisms (PAOs) in a sequencing batch (SBR) type reactor – the granules not only se ...
Discover the ultimate combination for freshness.
... It is primarily microbial and chemical/ biochemical deterioration that destroys food. Microbial deterioration starts immediately after harvesting or slaughtering. The presence of microorganisms can be traced back to the raw materials, the ingredients and the environment. Microorganisms are found eve ...
... It is primarily microbial and chemical/ biochemical deterioration that destroys food. Microbial deterioration starts immediately after harvesting or slaughtering. The presence of microorganisms can be traced back to the raw materials, the ingredients and the environment. Microorganisms are found eve ...
Microbial associations with macrobiota in coastal ecosystems
... of microbial groups and are considered “broad” processes: denitrification, for instance, is performed by microorganisms from all three domains of life (Archaea, Bacteria, Eukaryota) (Zumft 1997). For these processes, metagenomics – in which a mixture of primarily microbial genetic material is recove ...
... of microbial groups and are considered “broad” processes: denitrification, for instance, is performed by microorganisms from all three domains of life (Archaea, Bacteria, Eukaryota) (Zumft 1997). For these processes, metagenomics – in which a mixture of primarily microbial genetic material is recove ...
Application of metagenomics to assess microbial communities in water and other
... waters. Evaluation of the total microbial community of a freshwater Mediterranean lagoon that was eutrophic as a result of primarily agricultural impacts revealed that it was distinctly different from previously characterized freshwater systems (Ghai et al., 2012). Notably, ultramicrobacteria, speci ...
... waters. Evaluation of the total microbial community of a freshwater Mediterranean lagoon that was eutrophic as a result of primarily agricultural impacts revealed that it was distinctly different from previously characterized freshwater systems (Ghai et al., 2012). Notably, ultramicrobacteria, speci ...
Biochemical oxygen demand
Biochemical oxygen demand (BOD) is the amount of dissolved oxygen needed by aerobic biological organisms in a body of water to break down organic material present in a given water sample at certain temperature over a specific time period. The term also refers to a chemical procedure for determining this amount. This is not a precise quantitative test, although it is widely used as an indication of the organic quality of water. The BOD value is most commonly expressed in milligrams of oxygen consumed per litre of sample during 5 days of incubation at 20 °C and is often used as a robust surrogate of the degree of organic pollution of water.BOD can be used as a gauge of the effectiveness of wastewater treatment plants. It is listed as a conventional pollutant in the U.S. Clean Water Act.BOD is similar in function to chemical oxygen demand (COD), in that both measure the amount of organic compounds in water. However, COD is less specific, since it measures everything that can be chemically oxidized, rather than just levels of biologically active organic matter.