本文選題：懸浮顆粒物　切入點(diǎn)：城市景觀水體　出處：《環(huán)境科學(xué)》2016年12期 　論文類型：期刊論文

【摘要】：基于懸浮顆粒物粒度分布特性能為水環(huán)境表觀質(zhì)量研究提供重要信息,以流經(jīng)蘇州市市內(nèi)運(yùn)河水為研究對象,探討無機(jī)型城市景觀水體中不同表觀污染程度下水中懸浮顆粒物的粒度分布特性及其影響因素,從懸浮顆粒物的粒徑角度來解釋無機(jī)型景觀水體表觀污染機(jī)制.結(jié)果表明,無機(jī)型水中懸浮顆粒物以單峰分布為主,中值粒徑范圍13~25.2μm,組分Ⅱ(粒級3.8~16μm)是優(yōu)勢組分,體積分?jǐn)?shù)范圍29.4%~59.6%;水體表觀污染的敏感組分為組分Ⅱ(粒級3.8~16μm)和組分Ⅳ(粒級32~64μm),表觀污染指數(shù)(SPI)與組分Ⅱ和組分Ⅳ體積分?jǐn)?shù)關(guān)系具有分段性,分段節(jié)點(diǎn)是濁度為45NTU處,濁度小于45NTU時,SPI值與組分Ⅱ體積分?jǐn)?shù)呈顯著正相關(guān),與組分Ⅳ體積分?jǐn)?shù)呈顯著負(fù)相關(guān);當(dāng)濁度大于或等于45NTU時關(guān)系相反.影響蘇州運(yùn)河水粒徑分布的因素主要是生物因子和水動力條件,生物因子的作用主要表現(xiàn)為藻類的增加,水動力條件的作用是使水體發(fā)生再懸浮,導(dǎo)致水中大顆粒物質(zhì)的增加.
[Abstract]:Based on the particle size distribution characteristics of suspended particles, it can provide important information for the study of apparent quality of water environment, and take the water flowing through the canal in Suzhou as the research object. The particle size distribution characteristics and influencing factors of suspended particulate matter in urban landscape water with different apparent pollution degree were discussed. The apparent pollution mechanism of landscape water body without model was explained from the angle of particle size. The distribution of suspended particulates in non-aircraft type water was dominated by single peak, the median particle size was 130.25.2 渭 m, and component 鈪，

本文編號：1575985