Doctor of Philosophy (PhD)
First Advisor's Name
Walter Z. Tang
First Advisor's Committee Title
Second Advisor's Name
Second Advisor's Committee Title
Third Advisor's Name
Third Advisor's Committee Title
Fourth Advisor's Name
Fourth Advisor's Committee Title
Fifth Advisor's Name
Fifth Advisor's Committee Title
micro-sieving, partial nitrification/anammox reactor, up-flow anaerobic sludge blanket reactor, leachate, industrial wastewater, unit energy consumption, unit energy production, unit cost
Date of Defense
Innovative technologies such as micro-sieving, Anammox, and up-flow anaerobic sludge blanket (UASB) hold the key in the sustainable design of Water Resource Recovery Facility (WRRF). In the past, assessment metrics on the effectiveness and economic feasibility of these technologies have not been systematically investigated. According to the twelve design principles of Sustainable Environmental Engineering, Unit energy and cost metrics could provide universal benchmarks in the design of WRRF. Therefore, the objectives of this study are to design innovative WRRF systems to achieve energy positive. These WRRFs were modeled by developing an Excel model to estimate the unit energy metrics. Database of different wastewater quality was developed according to literature data. An Excel model was also developed to estimate the cost due to the energy saving of innovative systems.
In treating young, medium, and old leachate, systems with the innovative technologies could save the unit energy consumption by 2.24-4.07 kWh/kg Nremoved and the unit cost by $0.86-2.09/kg CODremoved than conventional technologies. Treatment of young leachate costs less than other leachate in terms of per kg COD removed. Although micro-sieving decreases CH4 production, it reduces the size of the UASB. As a result, micro-sieving could reduce the unit cost by 27% compared with systems without primary treatment. The major saving was contributed by UASB which converts BOD to CH4. In addition, partial nitrification/anammox (PN/A) consumes less oxygen in removing nitrogen, which helps food processing treatment system achieve energy positive. In treatment of meat processing wastewater, tannery wastewater, and textile wastewater, the mean unit energy consumptions in innovative systems were 1.49, 1.37, and 1.39 kWh/kg Nremoved. Mean unit energy consumption is close to the unit energy consumption of PN/A. The average unit costs for three types of industrial wastewater are 0.54, 0.57, and 1.12 $/kg CODremoved, respectively. Therefore, meat processing wastewater can be the most efficiently treated by using innovative technologies due to its high biodegradability.
For WWTPs in China, anaerobic-oxic plus anaerobic-anoxic-oxic, oxidation ditch, and sequencing batch reactor were the main technologies. Due to lower energy consumption, SBR is the best technology in small and medium WWTPs in China.
Li, Jinze, "Unit Energy Consumption, Production, and Cost of Innovative Treatment Systems of Different Wastewater Streams" (2021). FIU Electronic Theses and Dissertations. 4623.
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