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Subsurface flow constructed wetland in nitrogen and phosphorus removal has unparalleled advantages of traditional secondary sewage treatment process. But artificial wetlands geographical impact of hydraulic load of subsurface flow constructed wetlands to remove nitrogen and phosphorus in the effect of the sewage, pollution load, plant selection, seasonal changes affect the study is also unusual in Jiangxi nor available for reference kinetic equation parameters. Study from subsurface flow constructed wetlands to remove nitrogen and phosphorus in sewage main factors start test analysis continuous stream flow conditions, the hydraulic load, pollution load, plant, season of the chemical oxygen demand, ammonia nitrogen, total nitrogen and total phosphorus removal and water quality, and the establishment of the first order kinetics equation. In this thesis the following conclusions: (1) hydraulic loading affect CODcr, NH3-N, TN, TP removal efficiency and effluent quality of important factors, with the hydraulic load decreases bed removal rate rise wetlands, water quality changed for the better. In the hydraulic loading 166.7mm / d, the removal and water quality of the wetland bed is better: CODcr, NH3-N, TN and TP removal efficiency of 95.99%, 37.24%, 56.09%, 76.00 %; effluent CODcr reach the urban sewage treatment plant pollutant discharge standard (GB 18918-2002) \TN reached urban sewage treatment plant pollutant discharge standard (GB 18918-2002) \(2) the pollution load is affecting subsurface flow constructed wetland system CODcr, NH3-N, TN and TP removal loading and water quality an important factor. CODcr, NH3-N, TN and TP removal loading with increasing pollution load increases, and there is a good linear relationship. 2.8 ~ 26.3 g/m2 · d, influent NH3-N load in water CODcr load 0.3 g/m2 · d, the influent TN load of 0.8 to 1.7g/m2 · d, the influent TP load of 0.028 g / m2 · d the various wetland beds effluent CODcr NH3-N, TN, TP reached the urban sewage treatment plant pollutant discharge standard (GB 18918-2002) \/ m2 · d, influent NH3-N load 0.8 ~ 2.2g/m2 · d, the influent TN load for of 2.4 ~ 4.8g/m2 · d, influent TP load of 0.169 ~ 0.882 g/m2 · d the wetland bed effluent CODcr, NH3-N, TN, TP reached the urban sewage treatment plant pollutant discharge standard (GB 18918-2002) \(3) The plant pollutants in sewage removal and water quality. Four groups of plants wetland bed CODcr removal rate from 85.41% to 95.99% removal in descending order of Canna gt; Windmill Grass gt; mushroom gt; of Coix, canna and windmill grass wetland bed effluent to surface water environmental quality standards ( GB3838-2002) \order of the Canna gt; mushroom gt; the Coix gt; windmill grass, water reached two standards of urban sewage treatment plant pollutant discharge standard (GB 18918-2002) \removal in descending order as Canna gt; Windmill Grass gt; the Coix gt; mushroom, water reached the urban sewage treatment plant pollutant discharge standard (GB 18918-2002) \to 76.00% removal descending order mushroom gt; Canna gt; Windmill Grass gt; The Coix mushroom wetlands bed effluent can meet the urban sewage treatment plant pollutant discharge standard (GB 18918-2002) \, windmill grass wetland bed effluent TP of urban sewage treatment plant pollutant discharge standard (GB 18918-2002) \(4) seasonal affect subsurface flow constructed wetland CODcr, an important factor for NH3-N, TN, TP removal efficiency and effluent quality. The summer treatment better than the winter, winter, still achieve better removal effect in Jiangxi. CODcr removal rate of 91.79%, the water quality of surface water environmental quality standards (GB3838-2002) \pollutant emission standards (GB 18918-2002) \TP removal rate of 49.50%. The water quality of urban sewage treatment plant pollutant discharge standard (GB 18918-2002) \(5) experimental studies have shown that to deal with the general municipal sewage water quality, weather conditions in the the Jiangxi region's climate, a kinetic equation, simulated wetland system can better CODcr, NH3-N, TN, TP removal law . The model has certain reference value in Jiangxi province later subsurface flow constructed wetland system design. Canna wetland bed CODcr, NH3-N, TN, TP degradation constant k 0.3677,0.1652,0.1889,0.2760; the Coix wetland bed CODcr, NH3-N, TN, TP degradation constant k were 0.5172,0.1227 0.1637,0.1833; mushroom wetland bed CODcr, NH3-N, TN, TP degradation constant k, respectively 0.3994,0.2236,0.1227,0.4479; windmill grass wetland bed CODcr, NH3-N, TN, TP degradation constant k, respectively The for 0.2748,0.1724,0.2657,0.2172. The thesis results showed that the removal of subsurface flow constructed wetland sewage nitrogen, phosphorus and other pollutants can achieve better results in Jiangxi. Studies of hydraulic load, pollution load, plant and seasonal investigated the treatment effect of nitrogen, phosphorus, and the establishment of nitrogen and phosphorus removal of the kinetic equation, as in Jiangxi province subsurface flow constructed wetland applications based on.
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