Bovine Rectal Bacteria Can Solve COD Problems with Acetate Liquor
... transferred to SO42- (320mg/l) (although NO3-N was not measured). Thus sulfate reduction occurred as SO4 2was induced and under the circumstances, the reducing equivalents did not possibly flow towards O2 because the dissolved oxygen concentrations were very low (0.35mg/L), following which, COD decr ...
... transferred to SO42- (320mg/l) (although NO3-N was not measured). Thus sulfate reduction occurred as SO4 2was induced and under the circumstances, the reducing equivalents did not possibly flow towards O2 because the dissolved oxygen concentrations were very low (0.35mg/L), following which, COD decr ...
Sewage
... • Discharging the effluent into bodies of water such as rivers, streams, lakes and sea for the purpose of dilution and oxidation of the impurities by the dissolved oxygen in water is termed as “disposal by dilution”. • The BOD content of the effluent and diluting capaci ...
... • Discharging the effluent into bodies of water such as rivers, streams, lakes and sea for the purpose of dilution and oxidation of the impurities by the dissolved oxygen in water is termed as “disposal by dilution”. • The BOD content of the effluent and diluting capaci ...
Downl. - ijaresm.net
... this process is the production of the maximum number of Btu’s from the organic matter in a waste effluent per pound of compressed air fed into the reactor. Because the Zimpro process eliminates conventional filters, chemicals, sludge digestion units, incinerators, and auxiliary equipment, it reduces ...
... this process is the production of the maximum number of Btu’s from the organic matter in a waste effluent per pound of compressed air fed into the reactor. Because the Zimpro process eliminates conventional filters, chemicals, sludge digestion units, incinerators, and auxiliary equipment, it reduces ...
Peer-reviewed Article PDF
... carefully teased away and retained. This revealed an intact sinus membrane. The surrounding Schneiderian membrane was detached carefully from the walls without elevation. A surgical round bur size 8 was used to create a fenestration (at least) 5 mm superior to the window (Figure 1). The sinus membra ...
... carefully teased away and retained. This revealed an intact sinus membrane. The surrounding Schneiderian membrane was detached carefully from the walls without elevation. A surgical round bur size 8 was used to create a fenestration (at least) 5 mm superior to the window (Figure 1). The sinus membra ...
Nitrogen Control III
... When operating a wastewater treatment facility that has an aerobic digester for waste sludge stabilization and plant hydraulic capacity is not limited, it can be beneficial to return digester supernatant during high daily flow periods. Since aerobic digester supernatant can be high in nitrate, this ...
... When operating a wastewater treatment facility that has an aerobic digester for waste sludge stabilization and plant hydraulic capacity is not limited, it can be beneficial to return digester supernatant during high daily flow periods. Since aerobic digester supernatant can be high in nitrate, this ...
Nitrogen Removal Guide for Wastewater Operators
... In pre-anoxic tanks, mechanical mixing is desired, but often not necessary. Oftentimes, it is possible to sufficiently mix the contents by simply directing the flow in such a way as to keep solids in suspension. If a primary clarifier is converted to a pre-anoxic tank and RAS is pumped back to the ...
... In pre-anoxic tanks, mechanical mixing is desired, but often not necessary. Oftentimes, it is possible to sufficiently mix the contents by simply directing the flow in such a way as to keep solids in suspension. If a primary clarifier is converted to a pre-anoxic tank and RAS is pumped back to the ...
Biological Removal of Phosphorus from Wastewater and Recovery
... waters and, in the worse case, to the disappearance of the aquatic ecosystems, being the limiting nutrient as far as fresh water eutrophication is concerned phosphorus is usually the element of greatest concern in sewage treatment. In many jurisdictions there are strict limits set for maximum allowa ...
... waters and, in the worse case, to the disappearance of the aquatic ecosystems, being the limiting nutrient as far as fresh water eutrophication is concerned phosphorus is usually the element of greatest concern in sewage treatment. In many jurisdictions there are strict limits set for maximum allowa ...
Cannibal Solids Reduction Process
... ranging in size from 0.75 MGD to 16 MGD have been sold across the United States. Several plants are now in operation and many more facilities will soon be underway. The process is designed for plants that use a variety of treatment technologies as the main biological process, including oxidation dit ...
... ranging in size from 0.75 MGD to 16 MGD have been sold across the United States. Several plants are now in operation and many more facilities will soon be underway. The process is designed for plants that use a variety of treatment technologies as the main biological process, including oxidation dit ...
Mixing bread doughs under highly soluble gas
... during bread dough mixing; providing the main route for oxygen adsorption into the dough and determining the dough bubble size distribution which will evolve into the final bread crumb structure. Pressure-vacuum mixing is the main industrial technique for controlling these. This paper reports on a n ...
... during bread dough mixing; providing the main route for oxygen adsorption into the dough and determining the dough bubble size distribution which will evolve into the final bread crumb structure. Pressure-vacuum mixing is the main industrial technique for controlling these. This paper reports on a n ...
Clinical Practice - Stevens Johnson Syndrome Foundation
... Alcon, Fort Worth, TX) for this purpose because it is bactericidal, is effective against most common skin pathogens, achieves high corneal concentrations, and a single drop maintains high tear film concentrations for at least 6 hours following application.26 Additionally, 20 minutes following applic ...
... Alcon, Fort Worth, TX) for this purpose because it is bactericidal, is effective against most common skin pathogens, achieves high corneal concentrations, and a single drop maintains high tear film concentrations for at least 6 hours following application.26 Additionally, 20 minutes following applic ...
DEMON®: Number and capacity of installed systems
... A cyclone in the discharge line for surplus sludge will retain deammonifying bacteria in the system, while discharging lighter materials. This will favour growth of deammonifying bacteria over competing nitrite oxidizing bacteria, resulting in a very robust process. The DEMON® process is fully autom ...
... A cyclone in the discharge line for surplus sludge will retain deammonifying bacteria in the system, while discharging lighter materials. This will favour growth of deammonifying bacteria over competing nitrite oxidizing bacteria, resulting in a very robust process. The DEMON® process is fully autom ...
ijlbpr_52
... contain high or low concentrations of chromophoretic compounds. These wastes may contain inert, organic or toxic materials and possibly pathogenic bacteria. These wastes may be discharged into the sewer system provided they have no adverse effect on treatment efficiency or undesirable effects on the ...
... contain high or low concentrations of chromophoretic compounds. These wastes may contain inert, organic or toxic materials and possibly pathogenic bacteria. These wastes may be discharged into the sewer system provided they have no adverse effect on treatment efficiency or undesirable effects on the ...
Modeling of single cell protein production from cheese whey using
... The decrease in lactose and increase in biomass occurred in parallel and growth rate also increased simultaneously with the increasing lactose consumption rate (Figure 2). This phenomenon justifies our assumption that lactose is the growth controlling substrate. The kinetics of the growth of Trichos ...
... The decrease in lactose and increase in biomass occurred in parallel and growth rate also increased simultaneously with the increasing lactose consumption rate (Figure 2). This phenomenon justifies our assumption that lactose is the growth controlling substrate. The kinetics of the growth of Trichos ...
Whitepaper Wastewater treatment in the dairy
... either direct or indirect discharge. With direct discharge, a biological cleaning stage is normally used, as well as both grease separator systems (e.g. flotation systems), and mixing and equalising tanks. As dairy wastewater is easy to break down biologically, the COD can be reduced in the discharg ...
... either direct or indirect discharge. With direct discharge, a biological cleaning stage is normally used, as well as both grease separator systems (e.g. flotation systems), and mixing and equalising tanks. As dairy wastewater is easy to break down biologically, the COD can be reduced in the discharg ...
comparison of chemical and biological phosphorus removal in
... priority that society places on the wastewater treatment and the costs they are ready to incur. A final remark is that the winning concept these days should not be based on which process should be used in isolation to the other, but rather using the advantages of both processes together to obtain ‘b ...
... priority that society places on the wastewater treatment and the costs they are ready to incur. A final remark is that the winning concept these days should not be based on which process should be used in isolation to the other, but rather using the advantages of both processes together to obtain ‘b ...
Microbial Roles and Dynamics in Wastewater Treatment
... a direct solid-liquid separation by membrane filtration through the use of micro or ultrafiltration membrane technology. The system allows for the complete physical retention of bacterial flocs and all suspended solids within the bioreactor. The advantages of a membrane bioreactor over other treatme ...
... a direct solid-liquid separation by membrane filtration through the use of micro or ultrafiltration membrane technology. The system allows for the complete physical retention of bacterial flocs and all suspended solids within the bioreactor. The advantages of a membrane bioreactor over other treatme ...
Biological wastewater treatment
... of pesticides has been found to occur both in the laboratory and in the natural environment. However, some chemicals, such as 3-chlorobenzoic acid, are capable of being completely mineralized to methane under anaerobic conditions. Biotransformation or incomplete mineralization occurs under both aero ...
... of pesticides has been found to occur both in the laboratory and in the natural environment. However, some chemicals, such as 3-chlorobenzoic acid, are capable of being completely mineralized to methane under anaerobic conditions. Biotransformation or incomplete mineralization occurs under both aero ...
Environmentally friendly cleaning with CO2
... areas, high-quality semi-finished products and complex building elements. This demand requires compact equipment that does not use solvents (VOC) or large quantities of water. For these reasons, the Linde Group “Cryoclean” cleaning procedure is gaining ground against more traditional procedures on t ...
... areas, high-quality semi-finished products and complex building elements. This demand requires compact equipment that does not use solvents (VOC) or large quantities of water. For these reasons, the Linde Group “Cryoclean” cleaning procedure is gaining ground against more traditional procedures on t ...
Effects of Na2SO4 Concentration on Pollutants Removal and
... ABSTRACT Hydrolysis-aerobic biological treatment process shows low efficiency in removal inorganic salts from the dyeing wastewater, and the accumulation of inorganic salts in dyeing wastewater reuse process may inhibited the pollutants removal. To understand this problem, a dyeing hydrolysis-aerobi ...
... ABSTRACT Hydrolysis-aerobic biological treatment process shows low efficiency in removal inorganic salts from the dyeing wastewater, and the accumulation of inorganic salts in dyeing wastewater reuse process may inhibited the pollutants removal. To understand this problem, a dyeing hydrolysis-aerobi ...
Abstract
... avoid eutrophication problems in receiving waters. The most widely used technologies for nutrient removal include biological nitrification/denitrification for nitrogen removal and metal salt precipitation or biological treatment for phosphorus removal. Both approaches result in the nutrient being ma ...
... avoid eutrophication problems in receiving waters. The most widely used technologies for nutrient removal include biological nitrification/denitrification for nitrogen removal and metal salt precipitation or biological treatment for phosphorus removal. Both approaches result in the nutrient being ma ...
Phosphorus Removal from Wastewater by Chemical Precipitation
... metals and other ligands in the wastewater. Side reactions of the metals with alkalinity to form hydroxide precipitates are another factor to be considered. The amount of metal needed to remove phosphorus exceeds the stoichiometric amount at the low levels at which phosphorus is present in a was ...
... metals and other ligands in the wastewater. Side reactions of the metals with alkalinity to form hydroxide precipitates are another factor to be considered. The amount of metal needed to remove phosphorus exceeds the stoichiometric amount at the low levels at which phosphorus is present in a was ...
ReGenerator® Technologies
... deammonification process in which ammonia and nitrite are simultaneously converted to nitrogen gas, without the need for organic carbon. The advantages of the DEMON® system over other liquor treatment systems are manifold. Unlike older systems, DEMON® is a process that can typically achieve an ammon ...
... deammonification process in which ammonia and nitrite are simultaneously converted to nitrogen gas, without the need for organic carbon. The advantages of the DEMON® system over other liquor treatment systems are manifold. Unlike older systems, DEMON® is a process that can typically achieve an ammon ...
Surgically removed Epithelial membrane ingrowth after clear cornea
... fistula provided the route for the ingrowth of epithelial membrane. Edward Maumenee et al. reported that the fistula was formed in the anterior chamber in 19 cases of a total of 40 cases in association with the ingrowth of epithelial membrane following cataract surgery. Schaeffer AR. reported that t ...
... fistula provided the route for the ingrowth of epithelial membrane. Edward Maumenee et al. reported that the fistula was formed in the anterior chamber in 19 cases of a total of 40 cases in association with the ingrowth of epithelial membrane following cataract surgery. Schaeffer AR. reported that t ...
introduction
... function (Equation 9). The cell viability was reflected in the increased Cr(VI) reduction removal rate after 6 bed volumes (day 6). The characteristic flattening of the curve suggests an approach to the maximum cell growth and Cr(VI) reduction capacity of the reactor. Cr(VI) Reduction in a Column wi ...
... function (Equation 9). The cell viability was reflected in the increased Cr(VI) reduction removal rate after 6 bed volumes (day 6). The characteristic flattening of the curve suggests an approach to the maximum cell growth and Cr(VI) reduction capacity of the reactor. Cr(VI) Reduction in a Column wi ...
Aalborg Universitet Influent pathogenic bacteria may go straight into
... Microorganisms from wastewater are usually considered to be adsorbed onto the activated sludge flocs in wastewater treatment plants (WWTPs), consumed by protozoan or to die off. Therefore, the effluent is assumed to comprise primarily of those microorganisms that grow in the plant. Standard techniqu ...
... Microorganisms from wastewater are usually considered to be adsorbed onto the activated sludge flocs in wastewater treatment plants (WWTPs), consumed by protozoan or to die off. Therefore, the effluent is assumed to comprise primarily of those microorganisms that grow in the plant. Standard techniqu ...
Membrane bioreactor
Membrane bioreactor (MBR) is the combination of a membrane process like microfiltration or ultrafiltration with a suspended growth bioreactor, and is now widely used for municipal and industrial wastewater treatment with plant sizes up to 80,000 population equivalent (i.e. 48 million liters per day).