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藻酸盐固定化颗粒耐久性研究

Keywords: 海藻酸钙,海藻酸钡,耐久性,磷回收,污水处理

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Abstract:

针对藻酸盐载体耐久性差的缺点,选用了3种不同的方法(补充Ca、添加Ba和减少包埋量)来提高藻酸盐固定化颗粒的耐久性。结果表明,Ca2+的流失是引起藻酸盐凝胶强度下降的主要因素。减少包埋生物量仅能短期提高藻酸盐载体的耐久性,而补充Ca2+、添加Ba2+不但能使固定化颗粒长时间保持稳定,且加固后的固定化颗粒具有良好的生化性能。固定化污泥能快速稳定地去除富营养化湖水中的磷,并能实现磷的回收,这有利于推进磷资源的可持续利用。

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