Yung-tse Hung - Academia.edu (original) (raw)
Papers by Yung-tse Hung
Applied Water Science, 2015
ABSTRACT This literature review examines process, design, and cost issues related to using oxidat... more ABSTRACT This literature review examines process, design, and cost issues related to using oxidation ponds for wastewater treatment. Many of the topics have applications at either full scale or in isolation for laboratory analysis. Oxidation ponds have many advantages. The oxidation pond treatment process is natural, because it uses microorganisms such as bacteria and algae. This makes the method of treatment cost-effective in terms of its construction, maintenance, and energy requirements. Oxidation ponds are also productive, because it generates effluent that can be used for other applications. Finally, oxidation ponds can be considered a sustainable method for treatment of wastewater.
Membrane and Desalination Technologies, 2010
ABSTRACT Point-of-use (POU) system is the treatment process aimed to treat only water intended fo... more ABSTRACT Point-of-use (POU) system is the treatment process aimed to treat only water intended for direct consumption (drinking and cooking), typically at a single tap or limited number of taps. Point-of-entry (POE) treatment devices are typically installed to treat all water entering a single home, business, school, or facility. Reverse osmosis (RO) is recognized by the industry as one of the top POU and POE treatment technologies. This chapter describes the advantages and limitations in using RO for POU and POE applications. Types and configurations of reverse osmosis, and installation, operation and maintenance, and testing of RO are also included.
Membrane and Desalination Technologies, 2010
Oily wastewater treatment can be classified into two categories; primary and secondary treatment ... more Oily wastewater treatment can be classified into two categories; primary and secondary treatment systems. The primary treatment is employed to separate floatable oils from water and emulsified oil. Secondary treatment system is aimed to treat or break emulsified oil and, then, remove oil from water. This chapter mainly describes use of classical membrane technologies, which are ultrafiltration, microfiltration, nanofiltration, and
Advanced Physicochemical Treatment Processes, 2006
Oil and grease (O&G) is a common pollutant frequently found in the effluent of a wide... more Oil and grease (O&G) is a common pollutant frequently found in the effluent of a wide range of industries. Oil and grease concentrations in wastewater, as recommended by the US Environmental Protection Agency, are not determine as the presence of specific compounds but are measured by their extractability using a particular solvent. Hexane and Freon are primary solvents used to
In the present study, the optimum adsorption conditions for the uptake of methylene blue (MB) and... more In the present study, the optimum adsorption conditions for the uptake of methylene blue (MB) and reactive orange 16 (RO16) in binary dye solution by ethylenediamine tetraacidic acid (EDTA) modified rice hulls was studied. By using the Plackett-Burman design, the significant variables in affecting the MB and RO16 uptake in binary dye solution were identified as pH and contact time. The combined effects of interaction between the variables were determined using response surface methodology (RSM). The model predicted that at optimum conditions: pH 6.77 and contact time of 205.58 min, the MB uptake greater than 95% could be obtained. As for RO16, the RSM indicated that pH 3.17 and contact time of 205.59 min were optimal for maximum percent dye uptake. These predicted values were also experimentally validated to confirm the reliability of the models.
Environmental Quality Management, 2001
EPA's Maximum Achievable Control Technology rule for secondary aluminum production is intended to... more EPA's Maximum Achievable Control Technology rule for secondary aluminum production is intended to substantially reduce emissions of hazardous air pollutants. It may also impose significant costs on affected facilities.
Environmental Quality Management, 2003
Air dispersion modeling is widely used to estimate the concentration of groundlevel pollutants fr... more Air dispersion modeling is widely used to estimate the concentration of groundlevel pollutants from emission sources. Dispersion models often are utilized during preparation and evaluation of air permit applications, and in other instances where air pollution control strategies must be evaluated or improved.
Environmental Quality Management, 2001
EPA's Maximum Achievable Control Technology rule for secondary aluminum production is intended to... more EPA's Maximum Achievable Control Technology rule for secondary aluminum production is intended to substantially reduce emissions of hazardous air pollutants. It may also impose significant costs on affected facilities.
Environmental Quality Management, 2003
Air dispersion modeling is widely used to estimate the concentration of ground-level pollutants f... more Air dispersion modeling is widely used to estimate the concentration of ground-level pollutants from emission sources. Dispersion models often are utilized during preparation and evaluation of air permit applications, and in other instances where air pollution control strategies must be evaluated or improved.
Environmental Quality Management, 2002
Handbook of Environmental Engineering, 2007
... must be designed for carrying out gas–liquid reactions and operating in the kinetic control m... more ... must be designed for carrying out gas–liquid reactions and operating in the kinetic control mode. ... Sectionalized bubble column reactors and the stirred tank cascade reactor are the most common designs of ... The NS-LC process uses a vertical mono-lith reactor with a Pt–Pd/TiO2 ...
Biological Treatment Processes, 2009
If the wastewater to be treated contains various forms of nitrogen, three biological treatment st... more If the wastewater to be treated contains various forms of nitrogen, three biological treatment steps are required for nitrogen removal: (a) in a bio-oxidation step, organic nitrogen is anerobically broken down to ammonia nitrogen; (b) in a subsequent nitrification step, ammonia nitrogen in the wastewater is aerobically converted to nitrate nitrogen; and (c) in a final denitrification step, nitrate nitrogen is anaerobically or anoxically converted to nitrogen gas. This chapter discusses bio-oxidation, nitrification and denitrification process steps, their principles, and design considerations in detail.
Physicochemical Treatment Processes, 2005
ABSTRACT
Environmental Bioengineering, 2010
... Azni Idris, Abdul Ghani Liew Abdullah, Yung-Tse Hung, ... be defined as an activity that resu... more ... Azni Idris, Abdul Ghani Liew Abdullah, Yung-Tse Hung, ... be defined as an activity that results from the interactions that occurs between natural processes (physical, chemical, and biological) and the structural components such as geomorphology, hydrology, soil, flora, fauna, and ...
Environmental Biotechnology, 2010
This chapter deals with processes for biosolids dewatering and septage treatment. Septage is the ... more This chapter deals with processes for biosolids dewatering and septage treatment. Septage is the liquid and solid material pumped from a septic tank or cesspool when it is cleaned. A selection of recent methods that show promising applications is presented. These include: Expressor Press, Som-A-System, CentriPress, screw press, Sun Sludge system, wedgewater bed, vacuum assisted bed, reed bed, biosolids freezing
Biosolids Engineering and Management, 2008
This chapter deals with processes for biosolids dewatering and septage treatment. Septage is the ... more This chapter deals with processes for biosolids dewatering and septage treatment. Septage is the liquid and solid material pumped from a septic tank or cesspool when it is cleaned. A selection of recent methods that show promising applications is presented. These include Expressor Press, Som-A-System, CentriPress, screw press, Sun Sludge System, wedgewater bed, vacuum-assisted bed, reed bed, biosolids-freezing bed, biological flotation, and septage management systems. When septage is to be ultimately treated at a wastewater treatment plant or independent septage-treatment facility, a receiving station is required in order to provide preliminary treatment and equalization. Other management options discussed include land application of septage, lagoon disposal, and composting and odor control.
Biological Treatment Processes, 2009
ABSTRACT Anaerobic digestion results in the biological breakdown of the sludge into methane, carb... more ABSTRACT Anaerobic digestion results in the biological breakdown of the sludge into methane, carbon dioxide, unusable immediate organics and a small amount of cellular protoplasm, under anaerobic conditions, mainly for sludge stabilization and volume reduction. This chapter introduces anaerobic digestion theory, biochemistry, microbiology, organic loading, temperature control, digester design, gas collection, and methane gas use, maintenance, and design examples. Key WordsAnaerobic digestion-digester design-methane production-gas collection-gas use-sludge pumping-sludge stabilization-volume reduction.
Environmental Bioengineering, 2010
Anaerobic processes are widely used for the treatment of milk and dairy effluents. This technolog... more Anaerobic processes are widely used for the treatment of milk and dairy effluents. This technology has been subjected to significant development and real-scale application in the last few decades and offers highly favorable perspectives to accomplish a complete ...
Environmental Bioengineering, 2010
Conventional methods for heavy metal removal are precipitation, coagulation, reduction, ion excha... more Conventional methods for heavy metal removal are precipitation, coagulation, reduction, ion exchange, evaporation, and membrane processes. This chapter describes the use of microbial biosorbents in removing heavy metals. Environmental factors, mechanisms, and isotherms of biosorption were discussed. Biosorption kinetics includes pseudo-first-order, pseudo-second-order, and Elovich kinetics model.
Environmental Bioengineering, 2010
Decentralized or on-site treatment systems for domestic waste and wastewater treatment can be the... more Decentralized or on-site treatment systems for domestic waste and wastewater treatment can be the answer to many of the world's environmental health problems. Poor or remote communities need technologies developed for the application, and an economically ...
Applied Water Science, 2015
ABSTRACT This literature review examines process, design, and cost issues related to using oxidat... more ABSTRACT This literature review examines process, design, and cost issues related to using oxidation ponds for wastewater treatment. Many of the topics have applications at either full scale or in isolation for laboratory analysis. Oxidation ponds have many advantages. The oxidation pond treatment process is natural, because it uses microorganisms such as bacteria and algae. This makes the method of treatment cost-effective in terms of its construction, maintenance, and energy requirements. Oxidation ponds are also productive, because it generates effluent that can be used for other applications. Finally, oxidation ponds can be considered a sustainable method for treatment of wastewater.
Membrane and Desalination Technologies, 2010
ABSTRACT Point-of-use (POU) system is the treatment process aimed to treat only water intended fo... more ABSTRACT Point-of-use (POU) system is the treatment process aimed to treat only water intended for direct consumption (drinking and cooking), typically at a single tap or limited number of taps. Point-of-entry (POE) treatment devices are typically installed to treat all water entering a single home, business, school, or facility. Reverse osmosis (RO) is recognized by the industry as one of the top POU and POE treatment technologies. This chapter describes the advantages and limitations in using RO for POU and POE applications. Types and configurations of reverse osmosis, and installation, operation and maintenance, and testing of RO are also included.
Membrane and Desalination Technologies, 2010
Oily wastewater treatment can be classified into two categories; primary and secondary treatment ... more Oily wastewater treatment can be classified into two categories; primary and secondary treatment systems. The primary treatment is employed to separate floatable oils from water and emulsified oil. Secondary treatment system is aimed to treat or break emulsified oil and, then, remove oil from water. This chapter mainly describes use of classical membrane technologies, which are ultrafiltration, microfiltration, nanofiltration, and
Advanced Physicochemical Treatment Processes, 2006
Oil and grease (O&G) is a common pollutant frequently found in the effluent of a wide... more Oil and grease (O&G) is a common pollutant frequently found in the effluent of a wide range of industries. Oil and grease concentrations in wastewater, as recommended by the US Environmental Protection Agency, are not determine as the presence of specific compounds but are measured by their extractability using a particular solvent. Hexane and Freon are primary solvents used to
In the present study, the optimum adsorption conditions for the uptake of methylene blue (MB) and... more In the present study, the optimum adsorption conditions for the uptake of methylene blue (MB) and reactive orange 16 (RO16) in binary dye solution by ethylenediamine tetraacidic acid (EDTA) modified rice hulls was studied. By using the Plackett-Burman design, the significant variables in affecting the MB and RO16 uptake in binary dye solution were identified as pH and contact time. The combined effects of interaction between the variables were determined using response surface methodology (RSM). The model predicted that at optimum conditions: pH 6.77 and contact time of 205.58 min, the MB uptake greater than 95% could be obtained. As for RO16, the RSM indicated that pH 3.17 and contact time of 205.59 min were optimal for maximum percent dye uptake. These predicted values were also experimentally validated to confirm the reliability of the models.
Environmental Quality Management, 2001
EPA's Maximum Achievable Control Technology rule for secondary aluminum production is intended to... more EPA's Maximum Achievable Control Technology rule for secondary aluminum production is intended to substantially reduce emissions of hazardous air pollutants. It may also impose significant costs on affected facilities.
Environmental Quality Management, 2003
Air dispersion modeling is widely used to estimate the concentration of groundlevel pollutants fr... more Air dispersion modeling is widely used to estimate the concentration of groundlevel pollutants from emission sources. Dispersion models often are utilized during preparation and evaluation of air permit applications, and in other instances where air pollution control strategies must be evaluated or improved.
Environmental Quality Management, 2001
EPA's Maximum Achievable Control Technology rule for secondary aluminum production is intended to... more EPA's Maximum Achievable Control Technology rule for secondary aluminum production is intended to substantially reduce emissions of hazardous air pollutants. It may also impose significant costs on affected facilities.
Environmental Quality Management, 2003
Air dispersion modeling is widely used to estimate the concentration of ground-level pollutants f... more Air dispersion modeling is widely used to estimate the concentration of ground-level pollutants from emission sources. Dispersion models often are utilized during preparation and evaluation of air permit applications, and in other instances where air pollution control strategies must be evaluated or improved.
Environmental Quality Management, 2002
Handbook of Environmental Engineering, 2007
... must be designed for carrying out gas–liquid reactions and operating in the kinetic control m... more ... must be designed for carrying out gas–liquid reactions and operating in the kinetic control mode. ... Sectionalized bubble column reactors and the stirred tank cascade reactor are the most common designs of ... The NS-LC process uses a vertical mono-lith reactor with a Pt–Pd/TiO2 ...
Biological Treatment Processes, 2009
If the wastewater to be treated contains various forms of nitrogen, three biological treatment st... more If the wastewater to be treated contains various forms of nitrogen, three biological treatment steps are required for nitrogen removal: (a) in a bio-oxidation step, organic nitrogen is anerobically broken down to ammonia nitrogen; (b) in a subsequent nitrification step, ammonia nitrogen in the wastewater is aerobically converted to nitrate nitrogen; and (c) in a final denitrification step, nitrate nitrogen is anaerobically or anoxically converted to nitrogen gas. This chapter discusses bio-oxidation, nitrification and denitrification process steps, their principles, and design considerations in detail.
Physicochemical Treatment Processes, 2005
ABSTRACT
Environmental Bioengineering, 2010
... Azni Idris, Abdul Ghani Liew Abdullah, Yung-Tse Hung, ... be defined as an activity that resu... more ... Azni Idris, Abdul Ghani Liew Abdullah, Yung-Tse Hung, ... be defined as an activity that results from the interactions that occurs between natural processes (physical, chemical, and biological) and the structural components such as geomorphology, hydrology, soil, flora, fauna, and ...
Environmental Biotechnology, 2010
This chapter deals with processes for biosolids dewatering and septage treatment. Septage is the ... more This chapter deals with processes for biosolids dewatering and septage treatment. Septage is the liquid and solid material pumped from a septic tank or cesspool when it is cleaned. A selection of recent methods that show promising applications is presented. These include: Expressor Press, Som-A-System, CentriPress, screw press, Sun Sludge system, wedgewater bed, vacuum assisted bed, reed bed, biosolids freezing
Biosolids Engineering and Management, 2008
This chapter deals with processes for biosolids dewatering and septage treatment. Septage is the ... more This chapter deals with processes for biosolids dewatering and septage treatment. Septage is the liquid and solid material pumped from a septic tank or cesspool when it is cleaned. A selection of recent methods that show promising applications is presented. These include Expressor Press, Som-A-System, CentriPress, screw press, Sun Sludge System, wedgewater bed, vacuum-assisted bed, reed bed, biosolids-freezing bed, biological flotation, and septage management systems. When septage is to be ultimately treated at a wastewater treatment plant or independent septage-treatment facility, a receiving station is required in order to provide preliminary treatment and equalization. Other management options discussed include land application of septage, lagoon disposal, and composting and odor control.
Biological Treatment Processes, 2009
ABSTRACT Anaerobic digestion results in the biological breakdown of the sludge into methane, carb... more ABSTRACT Anaerobic digestion results in the biological breakdown of the sludge into methane, carbon dioxide, unusable immediate organics and a small amount of cellular protoplasm, under anaerobic conditions, mainly for sludge stabilization and volume reduction. This chapter introduces anaerobic digestion theory, biochemistry, microbiology, organic loading, temperature control, digester design, gas collection, and methane gas use, maintenance, and design examples. Key WordsAnaerobic digestion-digester design-methane production-gas collection-gas use-sludge pumping-sludge stabilization-volume reduction.
Environmental Bioengineering, 2010
Anaerobic processes are widely used for the treatment of milk and dairy effluents. This technolog... more Anaerobic processes are widely used for the treatment of milk and dairy effluents. This technology has been subjected to significant development and real-scale application in the last few decades and offers highly favorable perspectives to accomplish a complete ...
Environmental Bioengineering, 2010
Conventional methods for heavy metal removal are precipitation, coagulation, reduction, ion excha... more Conventional methods for heavy metal removal are precipitation, coagulation, reduction, ion exchange, evaporation, and membrane processes. This chapter describes the use of microbial biosorbents in removing heavy metals. Environmental factors, mechanisms, and isotherms of biosorption were discussed. Biosorption kinetics includes pseudo-first-order, pseudo-second-order, and Elovich kinetics model.
Environmental Bioengineering, 2010
Decentralized or on-site treatment systems for domestic waste and wastewater treatment can be the... more Decentralized or on-site treatment systems for domestic waste and wastewater treatment can be the answer to many of the world's environmental health problems. Poor or remote communities need technologies developed for the application, and an economically ...