(a)以圖示說明並解釋水庫分層及溫差造成蓄水翻攪的現象。(10分)

7. To improve the nitrogen removal eficiency, an anoxic and aerobic (AO) process is proposed in a secondary municipal wastewater treatment plant. Please draw a schematic diagram and describe all the process, role of microorganisms, and mechanisms for nitrogen removal.(10分)