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| 1 | A restoration-promoting integrated floating bed and its experimental performance in eutrophication remediation显示文摘Numerous studies on eutrophication remediation have mainly focused on purifying water first, then restoring submerged macrophytes. A restoration-promoting integrated floating bed(RPIFB) was designed to combine the processes of water purification and macrophyte restoration simultaneously. Two outdoor experiments were conducted to evaluate the ecological functions of the RPIFB. Trial 1 was conducted to compare the eutrophication purification among floating bed, gradual-submerging bed(GSB) and RPIFB technologies. The results illustrated that RPIFB has the best purification capacity. Removal efficiencies of RPIFB for TN, TP, NH+ 4-N, NO-3-N, CODCr, Chlorophyll-a and turbidity were 74.45%, 98.31%, 74.71%, 88.81%, 71.42%, 90.17% and 85%, respectively. In trial 2, influences of depth of GSB and photic area in RPIFB on biota were investigated. When the depth of GSB decreased and the photic area of RPIFB grew, the height of Potamogeton crispus Linn. increased, but the biomass of Canna indica Linn. was reduced. The mortalities of Misgurnus anguillicaudatus and Bellamya aeruginosa in each group were all less than 7%. All results indicated that when the RPIFB was embedded into the eutrophic water, the regime shift from phytoplankton-dominated to macrophyte-dominated state could be promoted. Thus, the RPIFB is a promising remediation technology for eutrophication and submerged macrophyte restoration. | Yiming Guo Yunguo Liu Guangming Zeng Xinjiang Hu Xin Li Dawei Huang Yunqin Liu Yicheng Yin | 2014 | Journal of Environmental Sciences2014，26，5： | 18 |
| 2 | Pollutant removal from municipal wastewater employing baffled subsurface flow and integrated surface flow-floating treatment wetlands显示文摘This article reports pollutant removal performances of baffled subsurface flow, and integrated surface flow-floating treatment wetland units, when arranged in series for the treatment of municipal wastewater in Bangladesh. The wetland units(of the hybrid system) included organic, inorganic media, and were planted with nineteen types of macrophytes. The wetland train was operated under hydraulic loading fluctuation and seasonal variation. The performance analyses(across the wetland units) illustrated simultaneous denitrification and organics removal rates in the first stage vertical flow wetland, due to organic carbon leaching from the employed organic media. Higher mean organics removal rates(656.0 g COD/(m2·day)) did not completely inhibit nitrification in the first stage vertical flow system; such pattern could be linked to effective utilization of the trapped oxygen, as the flow was directed throughout the media by the baffle walls. Second stage horizontal flow wetland showed enhanced biodegradable organics removal, which depleted organic carbon availability for denitrification. The final stage integrated wetland system allowed further nitrogen removal from wastewater, via nutrient uptake by plant roots(along with nitrification), and generation of organic carbon(by the dead macrophytes) to support denitrification. The system achieved higher E. coli mortality through protozoa predation, E. coli oxidation, and destruction by UV radiation. In general, enhanced pollutant removal efficiencies as demonstrated by the structurally modified hybrid wetland system signify the necessity of such modification, when operated under adverse conditions such as: substantial input organics loading, hydraulic loading fluctuation, and seasonal variation. | Tanveer Saeed Abdullah Al-Muyeed Rumana Afrin Habibur Rahman Guangzhi Sun | 2014 | Journal of Environmental Sciences2014，26，4： | 7 |
| 3 | 低污染水的定义、水质净化与资源化利用显示文摘“低污染水”这一概念被提出后,即在洱海、星云湖、抚仙湖和太湖等湖泊的水污染防治中得以应用。近年来,关于低污染水的内涵不断得到丰富。本文综述了低污染水的定义与类型、发展脉络、在水体保护中的定位、处理技术和回用等。最后针对低污染水的特点对其处理技术和管理体系等进行了展望,为今后对低污染水的深入研究与资源化利用提供了总体思路。 | 卢少勇 国晓春 王宇娜 万正芬 | 2021 | 农业资源与环境学报2021，38，5： | 4 |
| 4 | 进水方式对生态碎石床去除生活污水中氮的影响显示文摘为提高生态碎石床对生活污水中氮的去除率,设计了空白床、芦苇床、水葱床、香蒲床4组生态碎石床,研究在连续进水(水力负荷7.5 cm/d,水力停留时间1.8 d)和间歇进水(水力负荷7.5 cm/d,水力停留时间5.4 d)2种进水方式下对生活污水中总氮(TN)、氨氮(NH+4-N)和硝氮(NO-3-N)的去除效果。结果表明:不同生态碎石床在2种进水方式下对氮的去除率差异较大,连续进水时对TN、NH+4-N的去除率依次是香蒲床>水葱床>空白床>芦苇床,香蒲床对TN、NH+4-N去除率较高,分别为77.68%和81.33%;对NO-3-N的去除率依次是空白床>芦苇床>香蒲床>水葱床,空白床去除率最好,为65.29%。间歇进水时对TN、NH+4-N的去除率依次是水葱床>芦苇床>香蒲床>空白床,水葱床对TN、NH+4-N去除率较高,分别为89.54%和91.79%;对NO-3-N去除率依次是水葱床>香蒲床>空白床>芦苇床,水葱床去除率最佳,为46.43%。间歇进水有利于提高生态碎石床对TN和NH+4-N的去除率,其中芦苇床对TN去除率增加19.63%,对NH+4-N去除率增加14.76%,水葱床对TN去除率增加19.14%,对NH+4-N去除率增加18.60%。 | 吴鑫 和树庄 陆轶峰 卢少勇 张俊朋 胡桃 张森霖 陈方鑫 | 2018 | 环境工程技术学报2018，8，5： | 3 |
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