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The Sewage Treatment Plant Energy Consumption Analysis and Energy Conservation Technology Research in the City of Kunming

Author: ZouXuZuo
Tutor: LuoZhuoYing
School: Kunming University of Science and Technology
Course: Municipal Engineering
Keywords: Sewage treatment Energy Energy
CLC: X703
Type: Master's thesis
Year: 2009
Downloads: 242
Quote: 0
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Abstract


Sewage treatment is energy intensive integrated technology, sewage treatment plant's energy is energy consuming. With China's rapid economic development from energy crisis and environmental crisis, people pay more attention to where energy issues. To build a resource-saving and environment-friendly society, the need to carry out energy-resource utilization efficiency of the sewage treatment of advanced and applicable technologies. According to the information that the power consumption of urban sewage treatment plant accounts for about 60 to 90% of total energy consumption, mainly for sewage sludge enhanced biological systems these oxygen and sludge treatment processes. This paper studies the main city of Kunming sewage treatment plant energy consumption, focusing on power consumption problem. Obtained in the research Kunming six sewage treatment plants operational status information within one year after the analysis of the treatment process, the power consumption of each device case, access to the main city of Kunming, sewage treatment plant process energy utilization characteristics, and treatment plants each process the level of primary energy consumption of the system, commonly used devices installed capacity and actual utilization of capacity status, direct energy consumption (mainly t water and electricity consumption) costs assessed. Energy' dissertation">Energy balance algorithm analysis combined sewage treatment plants each processing unit energy consumption of the energy transfer process of sewage treatment plants were analyzed. According to the analysis of urban sewage treatment process two largest energy-consuming aeration equipment Carry out specific studies. For aeration, aeration tank dissolved oxygen transfer rule, the factors that affect oxygen transfer conduct research, describe and understand the dissolved oxygen transfer process, proposed fuzzy PID control aeration equipment to strengthen the control of the process designed to provide the theoretical technical guidance to optimize operation of the sewage treatment plant to provide a theoretical basis for energy-saving design. Wastewater treatment plant in the aeration tank is a complex microbial ecosystem response systems, sewage treatment plant process, dissolved oxygen DO demand is changing regularly. It is an important parameter indicative, not only affects the treatment effect, but also related to the running costs. With the sewage treatment process load changes, oxygen also changes. By using fuzzy PID control algorithm to control the amount of gas, with the reaction process to provide the aeration process requires oxygen, to achieve more significant energy savings, to solve the sewage treatment plant in the presence of dissolved oxygen control broad issues, from sewage plant automation control on areas to meet process requirements, to achieve the purpose of energy saving aerator. Safeguard the normal sewage treatment plants, continuous, low-power operation. Sewage treatment plant for a variety of pump power consumption, this paper discusses the impact of sewage pump efficiency reasons put forward by frequency control, such as cutting impeller pumps for sewage treatment plants in the energy-saving measures. Combined with the characteristics of Kunming on the appropriate agricultural and regional characteristics of the sludge composting technology to explore, expect sludge recycling part of the energy can be utilized to achieve energy saving, emission reduction, efficiency purposes.

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CLC: > Environmental science, safety science > Processing and comprehensive utilization of waste > General issues > Wastewater treatment and utilization
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