本文關鍵詞： 再生水 景觀用水 富營養(yǎng)化 藻類 植物凈化　出處：《西安建筑科技大學》2013年碩士論文　論文類型：學位論文

【摘要】：水資源短缺已成為全球性的問題，再生水作為缺水城市景觀水體的補充水源將成為一種必然趨勢，但是再生水作為城市景觀水體的補充水源尚存在諸多問題。本論文分別在實驗室和現(xiàn)場條件下研究了再生水在自然條件下隨著時間的增加，水體水質的自然退化、藻類種類、數(shù)量的變化以及植物對水質的凈化作用，旨在為再生水回用于景觀水體的實際應用提供重要參考。本論文的主要研究結果如下： （1）在夏季較高溫條件下，，再生水水質迅速退化，由于水溫較高，水體出現(xiàn)營養(yǎng)鹽的累積、藻類數(shù)量上升,一周內發(fā)生富營養(yǎng)化，藻類數(shù)量達到200mg/m3以上。 （2）水葫蘆能有效地去除水體中的氨氮和溶解性磷，水葫蘆對氨氮的去除率是92.6%，吸收率是2.491mg/g,對溶解性磷的去除率是52.16%，吸收率是0.0653mg/g�？捎行Э刂圃孱愃A和水體富營養(yǎng)化，明顯提高水體水質。 （3）睡蓮對氨氮的去除率是66.6%，對總磷的去除率是46.4%，對總氮的去除率是74.4%，對COD值的去除率是36.25%。睡蓮能有效的去除水體中的氮磷等營養(yǎng)物質、阻止藻類的生長和水體富營養(yǎng)化。 （4）以再生水作為景觀水體的補充水源時，應主要針對隱桿藻，二形柵藻，直鏈藻，披針新月藻進行水華預防。磷濃度對藻類的增長有極大的促進作用，藻類的生長率和生長量與總磷濃度密切相關，因此控制磷酸鹽含量是控制藻類生長的關鍵因素。在景觀水體中補充再生水的比例最好是40%。 （5）以再生水作為人工湖唯一水源，將再生水直接作為人工湖的補給水時，湖水的氮、磷等指標始終保持較高的濃度，氨氮濃度變化范圍為0.132~2.547mg/L，溶解性磷濃度變化范圍為0.02~0.204mg/L。氮磷等營養(yǎng)物質及有機物濃度均偏高，如果長期運行，發(fā)生富營養(yǎng)化的可能性較高。
[Abstract]:The shortage of water resources has become a global problem, and reclaimed water will become an inevitable trend as a supplementary source of water for urban landscape water. However, there are still many problems in reclaimed water as a supplementary source of urban landscape water. In this paper, we studied the increase of reclaimed water in natural conditions with time in laboratory and field conditions. The natural degradation of water quality, the variety of algae species and quantity, and the purification of water quality by plants. The purpose of this paper is to provide an important reference for the practical application of reclaimed water in landscape water bodies. The main results of this paper are as follows: 1) under the higher temperature in summer, the water quality of reclaimed water degraded rapidly. Because of the high water temperature, the accumulation of nutrients appeared, the amount of algae increased, and eutrophication occurred within a week. The algae population is over 200 mg / m ~ 3. 2) Water hyacinth can effectively remove ammonia nitrogen and dissolved phosphorus from water body. The removal rate of ammonia nitrogen and absorption rate of water hyacinth are 92.6 mg / g and 2.491mg / g respectively. The removal rate of dissolved phosphorus is 52.16 and the absorptivity is 0.0653 mg / g. It can effectively control algae Shui Hua and eutrophication and improve water quality. The removal rate of ammonia nitrogen, total phosphorus and total nitrogen were 66.6, 46.4 and 74.4% respectively. The removal rate of COD value is 36.25%. Water lily can effectively remove nitrogen from water. Phosphorus and other nutrients prevent algae growth and water eutrophication. 4) when reclaimed water is used as the supplementary water source of landscape water body, it should be mainly aimed at Cryptophaga, Diploidophyta, Verticillium spp., and Phaeocephala spp., which can be prevented by Shui Hua. Phosphorus concentration can greatly promote the growth of algae. The algal growth rate and growth amount are closely related to the total phosphorus concentration, so controlling the phosphate content is the key factor to control the algal growth, and the best proportion of reclaimed water in the landscape water is 40%. 5) when the reclaimed water is used as the only source of water for artificial lake and the reclaimed water is used directly as the recharge water of artificial lake, the nitrogen and phosphorus of lake water always keep high concentration. The range of ammonia-nitrogen concentration was 0.132n 2.547mg / L, and the range of dissolved phosphorus concentration was 0.02n 0.204mg / L, the concentration of nitrogen and phosphorus was higher than that of organic matter. If run for a long time, the possibility of eutrophication is higher.
【學位授予單位】：西安建筑科技大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：X703;TU984

【參考文獻】

相關期刊論文 前10條

1 程航;陳旭遠;劉佳;;城市景觀水體污染分析及控制技術研究進展[J];安徽農業(yè)科學;2010年06期

2 王坦;李昊;;再生水回用于景觀水體的富營養(yǎng)化問題和生態(tài)修復[J];環(huán)境科學與管理;2011年03期

3 彭劍峰;宋永會;郭義川;鄭丙輝;;植物對再生水回用于景觀湖泊的水質調控能力研究[J];北京師范大學學報(自然科學版);2009年Z1期

4 李暢;秦華鵬;張盈盈;王雯雯;;不同季節(jié)中水回用于景觀水體的藻類增長模擬[J];環(huán)境科學與技術;2011年05期

5 劉莉;鄭興燦;廖飛鳳;黃偉偉;;TP濃度和季節(jié)變化對再生水水體中藻類生長的影響[J];中國給水排水;2007年21期

6 黃偉偉;鄭興燦;廖飛鳳;劉莉;;再生水景觀水體富營養(yǎng)化因素的垂直變化特征[J];中國給水排水;2008年01期

7 鄭杰;黃顯懷;尚巍;黃鵬;;不同氮磷比對藻類生長及水環(huán)境因子的影響[J];工業(yè)用水與廢水;2011年01期

8 樊開青,呂偉婭;再生水回用于景觀水體的初步探討[J];環(huán)境保護科學;2005年04期

9 宋永會;鄭丙輝;劉佑華;邱向陽;彭劍峰;;水生植物法再生景觀回用水水質穩(wěn)定技術研究[J];環(huán)境科學研究;2007年01期

10 丁國際;何星海;高士榮;許永香;孫鳳英;馬世豪;;再生水補充人工湖水對藻類生長影響的試驗研究[J];給水排水;2005年12期

相關博士學位論文 前2條

1 馬進軍;城市再生水的風險評價與管理[D];清華大學;2008年

2 于德淼;景觀用再生水水體富營養(yǎng)化特性及控制技術研究[D];哈爾濱工業(yè)大學;2010年

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