Potential Treatment/ Reuse Alternative for Dilute Milk Parlor andSugarcane Wastewater

[[abstract]]本研究主要利用厭氧程序（Bio-nest及Lagoon）做為前處理步驟，並配合以不同操作條件下，結合單層或雙層結構之好氧固定化微生物程序（EMMC Entrapped Mixed Microbial Cell）處理低濃度牛奶廢水及糖廢水，以達再利用之目的。研究以反應槽可容體積為基礎，在單層結構EMMC載體（Media carrier）填充率（Packing ratio），實驗室規模（Lab scale）設定為20%、實場規模（Field scale）則為12 5%。而在雙層結構EMMC則分成上下兩層之填充載體，兩層共填充13%。 為研究EMMC程序處理廢水之效能，主要以兩種經厭氧程序處理過後之廢水，操作進入EMMC系統中，並將EMMC之操作條件中水力停留時間（HRT Hydraulic Retention Time）控制在 12小時及配合不同的通氣時間進行研究。在最佳化考量下，以雙層結構之EMMC整體效能處理程序設定為HRT 12小時及間歇式通氣(1 hour on/1hour off)之操作條件下，最能同時提供較佳的污染去除率及較佳的出流水質，並有效節省EMMC載體成本。 以雙層EMMC效能處理程序結合厭氧Bio-nest程序或是lagoon程序，經本研究評估顯示，操作成本主要是設備、模場建造費用（Construction cost）及額外獲得的利益價值（Benefit value）。[[abstract]]Anaerobic processes Bio-nest and lagoon combined aerobic Entrapped Mixed Microbial Cell (EMMC) processes with both configurations of single-layer and double-layer for eating dilute milk parlor wastewater and sugarcane wastewater under various operational conditions to meet reusing For the single-layer systems the carrier was employed at the packing ratios of 20% of lab scale and 12 5% of field scale based on the bioreactor water volume In the double-layer system of lab scale carriers were separated into two layers which occupied the top and bottom parts of the reactor with an overall packing ratio of 13% In order to explore these potential treatments both anaerobically treated wastewaters were fed to EMMC systems at hydraulic retention time (HRT) 12hr and different aeration conditions Through the economic consideration results for potential treatments show that at HRT 12hr and intermitted aeration of 1hr on and 1hr off condition for double-layer EMMC system provides the better removal efficiency and effluent quality for carbon and lower cost for EMMC media carriers Economic evaluations for various potential treatments of double-layer EMMC system combined with alternatives anaerobic Bio-nest process and lagoon process were investigated The cost of operation is depended on the construction cost and benefit valu