Biotechnology Institute, Fujian Academy of Agricultural Sciences, Fuzhou 350003, China.
Bioresour Technol. 2010 Dec;101(23):9025-30. doi: 10.1016/j.biortech.2010.07.013. Epub 2010 Jul 31.
Both live plants and dried straw of water hyacinth were applied to a sequential treatment of swine wastewater for nitrogen and phosphorus reduction. In the facultative tank, the straw behaved as a kind of adsorbent toward phosphorus. Its phosphorus removal rate varied considerably with contact time between the straw and the influent. In the laboratory, the straw displayed a rapid total phosphorus reduction on a KH(2)PO(4) solution. The adsorption efficiency was about 36% upon saturation. At the same time, the water hyacinth straw in the facultative tank enhanced NH(3)-N removal efficiency as well. However, no adsorption was evident. This study demonstrated an economically feasible means to apply water hyacinth phosphorus straw for the swine wastewater treatment. The sequential system employed significantly reduced the land use, as compared to the wastewater stabilization pond treatment, for pollution amelioration of swine waste.
水葫芦的活体植物和干稻草均被应用于顺序处理猪废水中的氮和磷的减少。在兼性池中，稻草对磷表现出一种吸附剂的作用。稻草与进水之间的接触时间对其除磷率有很大影响。在实验室中，稻草对 KH(2)PO(4)溶液表现出快速的总磷还原。吸附效率在饱和时约为 36%。同时，兼性池中的水葫芦稻草也提高了 NH(3)-N 的去除效率。然而，没有明显的吸附作用。本研究证明了一种经济可行的方法，即将水葫芦磷稻草应用于猪废水处理中。与废水稳定塘处理相比，所采用的顺序系统显著减少了土地使用，从而改善了猪废物的污染。
