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产品
磷锁
Phoslock 是如何工作的?
Phoslock 的工作原理是利用镧与磷酸盐反应的能力。镧去除磷酸盐的效率很高,摩尔比为 1:1,这意味着一个镧离子将与一个磷酸盐离子结合。这种结合形成了矿物弹多芬(一种不溶性且生物惰性的化合物),它可以从水中去除磷酸盐。
Phoslock® 是一种专有且独特的水处理产品,可永久结合水柱中多余的磷,使其以环境友好的状态沉淀。它由澳大利亚国家科学机构 CSIRO 于 20 世纪 90 年代开发,由镧改性膨润土组成。
- Phoslock 利用镧与主要来自沉积物的潜在可释放磷酸盐发生反应的能力,但在应用过程中也会与水柱中的磷酸盐发生反应。
- Phoslock 与可用的磷酸盐结合,形成天然存在的、无毒的惰性矿物弹状多芬 (Rhabdophane)。
- 科学证据表明,Phoslock 不会对淡水生物群构成任何风险,也不会对人类健康造成任何风险。
应用 Phoslock 后会发生什么?
一旦到达沉积物上,Phoslock 和其中的磷酸镧就会作为沉积物的惰性矿物成分保留下来。镧和磷酸盐之间的键的性质使其在任何自然存在的 pH 范围(pH 4-11)下都不会断裂。更重要的是,该键在缺氧(低氧化还原电位)条件下不会断裂,这种情况在大多数湖泊沉积物和许多上覆水域中普遍存在。大多数其他磷结合剂,尤其是那些含铁的磷结合剂,会在缺氧条件下释放磷酸盐。
Phoslock 可去除多少磷酸盐?
一吨 Phoslock 能够去除 34 公斤磷酸盐或 11 公斤磷。有了这些信息以及对水和湖泊表面沉积物中生物可用磷含量的了解,就可以准确计算水体的 Phoslock 剂量。
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