以模型場設施探討舍飼養鵝廢水之處理性能

Study on the treatment of wastewaters collected from indoor rearing operation of geese

江兆弘(Chao-Hung Chiang) ； 胡見龍(Chien-Lung Hu) ； 林宗毅(Tsung-Yi Lin)

《畜產研究》 54卷4期 (2021/12) Pp. 231-238

https://doi.org/10.6991/JTLR.202112_54(4).0002

摘要

鑒於高病原性禽流感疫情對養鵝產業造成嚴重經濟損失，過去開放式飼養轉型為舍飼飼養儼然已成為趨勢。為探討傳統開放式及舍飼養鵝廢水處理系統之差異，本研究先使用小型反應槽（10 L）進行批式饋料處理小型養鵝場廢水。結果顯示，養鵝廢水分別以小型反應槽在厭氧（水力停留時間HRT = 5天）或好氧（HRT = 3天）狀況下處理，處理後廢水之懸浮固體（SS）、生化需氧量（BOD）及化學需氧量（COD）分別為厭氧（HRT 5天）的110.0、60.2及476.0 mg/L及好氧（HRT 3天）的89.0、29.0及201.0 mg/L，去除率分別可達94.5、93.7及80.4%和95.2、97.0及91.8%。另依小型模型槽好氧處理模式，建置大型好氧槽（有效容積600 L）進行養鵝廢水處理研究，結果顯示在好氧反應（HRT 3天）之條件下，處理水SS、BOD及COD分別為89.4、39.0及134.0 mg/L，其去除率分別為92.4、94.5及96.0%。研究結論為鵝舍廢水經HRT三天之批式處理法，可達放流水標準。處理後水樣之微生物超出50CFU/mL水禽用水含量之建議值，不適合直接回收使用。

關鍵字

養鵝廢水 ； 舍飼飼養 ； 處理模式

並列摘要

In view of the severe economic losses caused by the highly pathogenic avian influenza epidemic in the goose industry, the shift fromof feeding model from outdoor rearing to indoor rearing has become the inexorable trend. Tounderstand the differences of wastewater treatment system between traditional otudoor-rearing and indoor-rearing lab-scale tanks, operated in anaerobic and aerobic modes, , were used in current study to compare their performances for treatnment of wastewaters collected from indoor and outdoor geese-rearing operations. Different hydraulic retention time (HRT) for testing wastewater in the lab-scale tanks was adopted for the study. Results showed that with the anaerobic mode operated at a HRT of 5 days, treated wastewater with SS 110.0, BOD 60.2, and COD 476.0 mg/L, corresponding to removal rate of 94.5, 93.7, 80.4%, respectively, was obtained. With the aerobic mode operated at a HRT of 3 days, effluent wastewater with SS 89.0, BOD 29.0, and COD 201.0 mg/L and rate of 94.5, 93.7, 80.4%, respectively, was obtained. Wastewater treated by a full-scale tank operated in aerobic mode with a HRT of 3 days had SS, BOD, and COD values of 89.4, 39.0, 134.0 mg/L and removal efficiencies of 92.4, 94.5, 90.6%, respectively. This study concludes that geese-rearing wastewater can be treated by a fed-batch operation mode with a HRT of 3 days for the wastewater in the tank. The reuse of the treated wastewater is not recommended because the microbal contents in the waster exceed the standard of waterpool usage of 50 CFU/mL.

並列關鍵字

Goose wastewater ； Indoor rearing ； Treatment model