分流制雨水管網(wǎng)滯留污染物的估算研究
- Title:
- Estimation of Retained Pollutants in Separate Rainwater Pipeline Network
- 關(guān)鍵詞:
- font-size: 10pt; 雨水管網(wǎng)" style="text-decoration-line: none; color: rgb(48, 89, 220);">">雨水管網(wǎng); 滯留污染物; SWMM; 充滿度
- Keywords:
- font-size: 10pt; rainwater pipeline network" style="text-decoration-line: none; color: rgb(48, 89, 220);">">rainwater pipeline network; retained pollutant; SWMM; depth ratio
摘要:- 為了定量研究降雨時分流制雨水管網(wǎng)滯留污染物占總污染物的比例，對某研究區(qū)域雨水管網(wǎng)中的滯留污染物定期取樣檢測，并根據(jù)研究區(qū)域的基礎(chǔ)數(shù)據(jù)建立SWMM模型。同時，提出了一種雨水管網(wǎng)滯留污染物的計算方法，即以檢測到的雨水管網(wǎng)污染物濃度及充滿度計算滯留污染物質(zhì)量。將滯留污染物數(shù)據(jù)輸入SWMM模型中，分析對比有無滯留污染物的管網(wǎng)排放口污染物濃度的變化情況。模擬結(jié)果表明，在1年一遇的降雨條件下，雨水系統(tǒng)內(nèi)的滯留污染物對COD、NH3-N、TP總污染負荷的貢獻率分別為43.30%、92.75%、58.83%，雨水管網(wǎng)滯留污染物占雨水管網(wǎng)總污染物的比例較大。
Abstract:-
In order to quantitatively calculate the proportion of retained pollutants in a separate rainwater pipeline network to the total pollutants during rainfall conditions, the retained pollutants in the rainwater pipeline network of a research area were sampled and detected periodically, and the SWMM model was established based on the basic data of the research area. In addition, a method for calculating the amount of retained pollutants in the rainwater pipeline network was proposed, which was to calculate the amount of retained pollutants based on the detected pollutant concentration and depth ratio of the rainwater pipeline network. The data of retained pollutants were inputted into the established SWMM model, and the change of pollutant concentration at the outlet of the pipeline network with and without retained pollutants were analyzed and compared. The simulation results showed that the contribution rates of retained pollutants in the rainwater system to COD, NH 3-N and TP pollutant loads were 43.30%, 92.75% and 58.83%, respectively. It could be concluded that the proportion of retained pollutants in the total pollutants of rainwater pipeline network was large.
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