- 學位論文
工業污染河水以及底泥重金屬分佈與有機質相關性研究
The relationship between organic matters and heavy metals distribution in a polluted industrial river water and sediment
摘要
河水與底泥有機質腐殖化程度影響其與污染物重金屬與疏水性有機化合物宿命、分配與污染物的生物毒性。本研究分析河水溶解性有機質(DOM)與底泥鹼液萃取有機質(AEOM)之濾液與分離三種分子量溶液光學特徵，探討DOM與AEOM差異、分子量差異與場址差異。採集受生活污水與工業排放污染的鹽水港溪三採樣點(S-U, S-M與S-D)底泥與底泥上覆水，底泥分析重金屬。DOM與AEOM分離為三種不同分子量溶液分別為:A分子量溶液(3 kDa -0.45 μm, MW-A)、B分子量溶液(0.3-3 kDa, MW-B)與C分子量溶液(<0.3 kDa, MW-C)。DOM與AEOM各溶液量測DOC濃度與UV-Vis與螢光光譜，分析其光學性質特性。研究結果顯示場址S-D重金屬濃度顯著增加、推測受工廠排放累積的影響。DOM之DOC濃度(5.12–8.09 mg/L)與污染河川相似、場址S-U之AEOM之DOC濃度43.2±6.6 mg/L，S-D之AEOM DOC濃度顯著增加(103.4±19.8 mg/L)，推測受工業排放影響。OC組成DOM小分子量(<0.3 kDa)為主，AEOM以大分子量(>3 kDa)為主，而且場址S-D之大分子量OC分率增加，可能受到工業排放水之沉積影響。DOM與AEOM腐殖化程度指標HIX分別為1.46±0.30與1.44±0.46，無顯著差異。HIX數值顯示場址S-D之AEOM數值最低，同時場址S-D AEOM之PLF分率最高，而FLF與HLF分率最低。HIX與P1,n與PLF分率顯著負相關，而與P3,n, P5,n, FLF與HLF分率顯著正相關，DOM與AEOM之腐殖化程度受其組成的影響。
並列摘要
The extent of humification of river water and sediment organic matter affects the fate, distribution and biotoxicity of pollutants, such as heavy metals and hydrophobic organic compounds. This study analyzed the optical characteristics of the filtrate and separated three molecular weight solutions from the dissolved organic matter (DOM) of river water and the alkaline extracted organic matter from sediment (AEOM). This aimed to investigate the difference of optical properties between DOM and AEOM, among different molecular weight and among sampling sites. Samples were collected from sediments and overlying water from the three sampling sites (S-U, S-M and S-D) along the Shuichuan River Creek, which is polluted by domestic sewage and industrial discharge. The sediments were analyzed for heavy metals. DOM and AEOM are separated into three different molecular weight solutions: molecular weight A solution (3 kDa - 0.45 μm, MW-A), molecular weight B solution (0.3-3 kDa, MW-B) and molecular weight C solution (<0.3 kDa, MW-C). DOM and AEOM solutions were measured DOC concentration and UV-Vis and fluorescence spectra to analyze their optical properties. The results showed that the concentration of heavy metals in the site S-D is significantly increased, it may be affected by the accumulation of industrial discharges. The DOC concentration of DOM (5.12–8.09 mg/L) was similar to that of polluted rivers. The DOC concentration of AEOM at site S-U was 43.2±6.6 mg/L, and the DOC concentration of AEOM in S-D was significantly increased (103.4±19.8 mg/L). The possible reason was affected by the industrial discharge. The major OC composition of DOM was mainly composed of low molecular weight (<0.3 kDa), but major OC composition of AEOM was mainly composed by high molecular weight (>3 kDa). The high molecular weight of OC fraction in the site S-D increased that may be affected by the deposition of industrial water discharge. The humification index HIX of DOM and AEOM were 1.46±0.30 and 1.44±0.46, respectively, and there was no significant difference. The HIX value of AEOM shown that the site S-D had the lowest HIX value; the site S-D of AEOM had the highest PLF percentage, while the FLF and HLF had the lowest percentage. The HIX vales and P1, n and PLF percentage was a significant negative correlation, and a significant positive correlation with P3, n, P5, n, FLF percentage and HLF percentage. The degree of humification of DOM and AEOM was affected by its composition.
參考文獻
延伸閱讀
- 吳道仁（2005）。二仁溪流域底泥與水體中重金屬之境況。土壤與環境，8(1)，73-81。https://doi.org/10.30058/SE.200506.0006
- 朱敬平、李篤中（2001）。污泥前處理對微生物與有機物型態之影響。化工，48(5)，35-52。https://doi.org/10.29803/CE.200110.0005
- 葉昱夆（2015）。顆粒性懸浮物質與污泥不同分子量腐植質重金屬分配特性探討〔碩士論文，國立屏東科技大學〕。華藝線上圖書館。https://doi.org/10.6346/NPUST.2015.00247
- 闕亦吟（2018）。河川中懸浮固體的流布對水體與底泥中重金屬銅傳輸的影響〔碩士論文，國立臺灣大學〕。華藝線上圖書館。https://doi.org/10.6342/NTU201802817
- Hong, N. T. T. (2015). Treatment of Organic Matters and Tetracycline in Water by Using Constructed Wetland and Photocatalysis [master's thesis, National Pingtung University of Science and Technology]. Airiti Library. https://doi.org/10.6346/NPUST.2015.00292