Lubigi wetland in Uganda receives sewage from Lubigi sewage treatment plant and polluted storm water from parts of Kampala city, which contain organic pollutants including nitrogen. This research was formulated to investigate and model the mechanisms and processes governing the transformation and removal of nitrogen in the Lubigi wetland. Wetland characteristics, flora and the transformation and removal of nitrogen were investigated in the Lubigi wetland in Uganda. Pertinent field investigations, surveys, data collection and laboratory tests and analyses were carried out. Nitrogen transformation and removal was modelled using STELLA II version 9.0®2006 software. The results revealed that the wetland main study area basin widths varied from 250 m to 450 m and deepest section of the wetland was 2.5 m. The study area basin total surface area and volume are 1,093,740 m² and 1,073,060 m³, respectively. There are 9 dominant plants species, and the mean plants density, biomass and nitrogen content are 10.19 ± 4.69 plants/m², 1.25 kgDWm⁻² and 67.54 ± 37.9gNm⁻², respectively. The mean influent and effluent discharges were 222,378 m³/d and 221,357 m³/d, respectively. The wetland main study area hydraulic residence times, vary between 6 h and 10 days depending on the season of the year. The major nitrogen transformation and removal mechanisms and processes are plants uptake (10.328 gNm⁻²day⁻¹), sedimentation (2.467 gNm⁻²day⁻¹) and denitrification (0.027 gNm⁻²day⁻¹). It was concluded that wetland plants and sedimentation of organic nitrogen play a key role for nitrogen removal as they are responsible for removal of 67.54 ± 37.9 gNm⁻² and 157.5 g gNm⁻², respectively.

乌干达的卢比吉湿地从卢比吉污水处理厂接收污水，并从坎帕拉市部分地区接收雨水，其中含有氮等有机污染物。这项研究旨在调查和建模控制卢比吉湿地中氮的转化和去除的机制和过程。在乌干达的卢比吉湿地研究了湿地的特征，植物区系以及氮的转化和去除。进行了相关的现场调查，调查，数据收集以及实验室测试和分析。使用STELLA II版本9.0®2006软件对氮的转化和去除进行建模。结果表明，湿地主要研究区流域宽度在250 m至450 m之间，而湿地最深部分为2.5 m。²和1,073,060 m ³。有9个优势植物物种，和平均植物密度，生物量和氮含量是10.19±4.69株/米²，1.25 kgDWm ^-2和67.54±37.9g​​Nm ^-2分别。平均进水量和出水量分别为222,378 m ³ / d和221,357 m ³ / d。湿地主要研究区的水力停留时间根据一年中的季节在6小时到10天之间变化。氮的主要转化和去除机理和过程是植物吸收（10.328 gNm ^-2天^-1），沉积（2.467 gNm ^-2天^-1））和反硝化作用（0.027 gNm ^-2天^-1）。结论是，湿地植物和有机氮的沉降对于脱氮起着关键作用，因为它们分别负责去除67.54±37.9 gNm ^-2和157.5 g gNm ^-2。