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Title: | 狐尾藻淨化畜牧三段式廢水處理系統放流水之研究 Study of Purifying Effluent of Three Stages Wastewater Treatment System by Aquatic Plants─Myriophyllum verticillatum |
Authors: | Po-Hsun Roan 阮柏勳 |
Advisor: | 侯文祥(Wen-Shang Hou) |
Co-Advisor: | 謝正義(Cheng-I Hsieh) |
Keyword: | 水生植物,水質淨化,粉綠狐尾藻,畜牧廢水,營養鹽吸收, aquatic plants,water purification,Myriophyllum verticillatum,livestock wastewater,nutrient absorption, |
Publication Year : | 2019 |
Degree: | 碩士 |
Abstract: | 台灣畜牧業廢水主要以三段式廢水處理系統進行淨化再排放。然而,季節環境變化、操作不當或設備老舊等原因,使得畜牧廢水常在處理過後,仍有多項指標無法符合環保署之排放標準。超標的畜牧廢水不僅影響環境,行政院環保署自109年起,也將開始收取全額的畜牧業水污染防治費。故業者急需一個低成本的水質淨化工法,彌補三段式廢水處理系統的不足,減少廢水對於排放環境的負擔。
而利用種植水生植物吸收水體的營養鹽之生物水質改善方法,具有低成本、高效率且友善環境之特點,非常適合用於畜牧廢水的淨化。 故本研究選擇校園水池常見且生長快速、繁殖容易、耐污力高的粉綠狐尾藻作為研究目標生物,以建立針對台灣冬、夏季氣候環境下,粉綠狐尾藻去除營養鹽速率的數據,並探討不同廢水氨氮殘留濃度對水生植物鮮重、密度、存活狀況與淨化效果之影響。 研究結果顯示粉綠狐尾藻在種植的前7日有極高氨氮去除率。每天每公斤的鮮重植物能去除191.54~542.17mg的銨離子。針對畜牧廢水中磷之營養鹽,粉綠狐尾藻每日每公斤約能去除7.18~39.76mg之總磷。對於生化需氧量的降低也有一定的功效。搭配曝氣設備,更能夠幫助植物提升、維持硝酸鹽、氨氮和總磷的去除率。根據研究結果,將粉綠狐尾藻種植於三段式廢水處理系統中合適的處理階段水池,應有助於減輕廢水處理系統的負擔並改善放流水水質。另外植物在生長7日之後便會開始出現枯萎、衰亡的情況,在應用、管理上必須注意,避免死亡植株再次污染水質。 In Taiwan, three-stage wastewater treatment system is widely used in farm management to purify livestock wastewater before discharged into the rivers. However, discharged water usually do not fit the standard of Taiwan pollution policy implemented recently, which is caused by improper operation of treatment system, antique equipment or environment change.For protecting environment and avoiding punishment, planting aquatic plants in three-stage wastewater treatment system to remove excessive nutrients is an inexpensive method which could make up for the shortage of the treatment system and improve the environment. In this study, Myriophyllum verticillatum was taken as a research subject because it not only grows rapidly but also owns high purify ability and the tolerance of polluted water. The experiments were conducted to study the purify ability of Myriophyllum verticillatum. Various nutrients’ concentrations of water were poured into plastic containers with Myriophyllum verticillatum. Recorded the variations of nutrients’ concentrations regularly to estimate the purify ability. According to the result, Myriophyllum verticillatum could remove 191.54 to 542.17 mg ammonium and 7.18 to 39.76 mg total phosphorus per kilogram per day . Myriophyllum verticillatum would be planted at appropriate tanks of three-stage wastewater treatment system to reduce the load of treatment system and improve the quality of discharged water. |
URI: | http://tdr.lib.ntu.edu.tw/handle/123456789/687 |
DOI: | 10.6342/NTU201902842 |
Fulltext Rights: | 同意授權(全球公開) |
Appears in Collections: | 生物環境系統工程學系 |
Files in This Item:
File | Size | Format | |
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ntu-108-1.pdf | 4.33 MB | Adobe PDF | View/Open |
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