發(fā)布時間：2018-06-25 07:43

  本文選題：濕地植物 + 水力停留時間　； 參考：《安徽農(nóng)業(yè)科學(xué)》2017年08期

【摘要】：[目的]研究濕地植物在不同水力條件下對中水的凈化功效。[方法]在人工構(gòu)建的濕地系統(tǒng)中,將中水回用作為濕地水源,研究了5種濕地植物菖蒲、美人蕉、梭魚草、再力花和狐尾藻在不同水力停留時間、水深和水流速度(濕地表面流速和濕地滲濾流速)下對供試中水總氮(TN)、總磷(TP)的去除效果。[結(jié)果]濕地植物在適宜水力條件下對中水具有一定的凈化效果,其中菖蒲和美人蕉的TN系統(tǒng)出水含量符合"地表水環(huán)境質(zhì)量標(biāo)準(zhǔn)Ⅲ類"水體要求,TP系統(tǒng)出水含量符合"地表水環(huán)境質(zhì)量標(biāo)準(zhǔn)Ⅱ類"水體要求。綜合考慮5種植物對TN、TP的去除效果,模擬濕地系統(tǒng)適宜采用的水力停留時間為2 d,水深為20 cm。該情況下,不同表面流速處理對中水TN平均表面去除率達(dá)到21.08%,TP平均表面去除率達(dá)到17.63%。而不同滲濾流速處理對中水TN、TP系統(tǒng)去除均值分別為57.72%和64.84%。[結(jié)論]該研究可為中水污染治理提供科學(xué)依據(jù)。
[Abstract]:[objective] to study the purification effect of wetland plants on reclaimed water under different hydraulic conditions. [methods] in the constructed wetland system, the reclaimed water was used as the wetland water source, and five wetland plants, Acorus calamus, banana, barracuda, reamer and foxtail algae, were studied in different HRT. The removal effect of total nitrogen (TN) and total phosphorus (TP) under water depth and flow velocity (surface velocity of wetland and infiltration velocity of wetland). [results] Wetland plants have a certain purification effect on reclaimed water under suitable hydraulic conditions. The effluent contents of the TN system of Acorus calamus and Canna plantain were in line with the "Surface Water Environmental quality Standard Class 鈪，

本文編號：2065189