應用好氣性固定化細胞處理豬糞尿廢水

Applying the Aerobic Immobilized Cells in Treatment of Swine Wastewater

劉安琪(An-Chi Liu) ； 周楚洋(Chu-Yang Chou)

《農業機械學刊》 19卷3期 (2010/09) Pp. 47-59

https://doi.org/10.30062/JAM.201009.0001

摘要

本研究以纖維醋酸三酯（cellulose triacetate）包覆好氣污泥製成固定化細胞（immobilized cells）擔體，以做為豬糞尿水處理填充床（packed bed）的介質，除測試其處理豬糞尿水之效果外，也同時評估氮、磷之去除及固定化細胞大小對處理效率之影響。實驗中好氣槽按填入固定化細胞的大小分為好氣槽1（2×2×0.5 cm）及好氣槽2（4×4×0.5 cm）兩組；溫度控制在攝氏30±1°C。操作時，進流COD濃度維持在7,500 mg/L，以水力停留時間（HRT） 20天開始起動，然後漸漸增加進流的有機負荷量（0.33-7.5 g COD/L/d），實驗各為7個試程，觀察有機物、氮化物及磷化物的變化情形。結果顯示好氣槽1的BOD去除率最高可達98%，COD為96%；好氣槽2BOD去除率最高可達97%，COD則為96%；正磷酸鹽之去除率在好氣槽1、2分別為18-70%及19-64%；好氣槽1、2之硝化率（NOx-N增加率）分別為9-54%及12-66%。至於固定化細胞大小對好氣槽處理效率之影響，由結果得知，在本實驗之控制條件下，兩者之間並無顯著差異。

關鍵字

固定化細胞 ； 生物膜 ； 豬糞尿水 ； 好氣性 ； 氮磷處理

並列摘要

Immobilized cells manufactured by entrapping the aerobic sludge with cellulose triacetate, were used in this study as the media of packed-bed reactors. The objectives of this study are to investigate the feasibility of using these immobilized cells for swine wastewater treatment, to evaluate its performance in the removal of nitrogen and phosphorus, and the effect of the cell size on treatment efficiencies. Two modified up-flow fluidized aerobic reactors packed with different sizes immobilized cells (2×2×0.5 cm and 4×4×0.5 cm) were operated at 30±1°C. The systems were started up with the loading of 0.25 g COD/L/d and stood for the 20-day hydraulic retention time (HRT). Dilute influent was maintained at a constant concentration of 7.5 g COD/L. With the increasing of the organic loading rate (OLR), 7 experiments for each reactor were conducted. They were 0.33, 0.625, 0.75, 1, 1.5, 2.5 and 7.5 g COD/L/d. Organic components and nutrients (N, P) were monitored during experiments. The experimental results showed that the average removal efficiencies of BOD, COD, TKN and PO4 (superscript -3)-P ranged between 75-98%, 72-96%, 16- 75% and 18-70% in reactor 1 with smaller cell size, respectively. In reactor 2 with larger cell size, it was observed that the average removal efficiencies of BOD, COD, TKN and PO4(superscript -3)-P were 72-97%, 69-96%, 18-69% and 19-64%, respectively. There was no significant difference between cell size.

並列關鍵字

Immobilized cells ； Biofilm ； Swine wastewater ； Aerobic ； Nutrients removal