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对强化型缓冲带中的植物净化系统进行了研究,对芦苇和蒲草的净化效果进行了对比分析。结果表明:蒲草和芦苇对水体中总磷能快速吸收、吸收效果显著,对总氮和有机物效果不明显;在最低种植密度(3株/m2)时,后期芦苇对试验效果的维持比蒲草好,在中等(6株/m2)和高等密度(12株/m2)时,蒲草对试验水体中总磷的净化效果较芦苇好;蒲草植株内的总磷含量较芦苇高,在相同时间内收获相同植株数量蒲草比芦苇对试验水体中总磷的移除量更大;工程应用时建议以蒲草为主,芦苇为辅;种植密度蒲草采用3株/m2,芦苇采用6株/m2;为避免植株腐败造成二次污染,芦苇和蒲草应在10月上旬至中旬收割。
The plant purification system in the intensive buffer zone was studied, and the purification effect of Phragmites australis and Pursivella was analyzed comparatively. The results showed that the total phosphorus could be rapidly absorbed by Pucao and Reed, the absorption effect was obvious, but the effect on total nitrogen and organic matter was not obvious. At the lowest planting density (3 plants / m2) (6 plants / m2) and high density (12 plants / m2), the purifying effect of Raumagrass on Phosphorus in test water was better than Phragmites australis. The content of total phosphorus in Raumagrass plants was higher than Phragmites australis and harvested at the same time The same amount of plant Pu grass than Phragmites australis on the removal of total phosphorus in the test water greater; project recommended to Pu grass-based, reed supplemented; planting density Pucao 3 / m2, reed 6 / m2; to avoid Secondary pollution caused by the corruption of plants, reeds and rushes should be harvested in early October to mid-October.