Iron and phosphorus recovery from ferric precipitation sludge

为了尽量减少健康风险和环境污染，水和废水处理过程通常使用铁盐来消除磷酸盐和其他污染物。这会产生大量的化学污泥，这些污泥通常被送到垃圾填埋场。这种新工艺的好处是可以回收铁和磷酸盐，铁可以在这个过程中重复使用，磷酸盐是肥料的关键成分。由于磷酸盐是一种价值越来越高的有限自然资源，因此在粮食生产中对这一关键元素的回收和再循环非常重要。该工艺还将避免大部分污泥的产生，并将使水处理工艺更具成本效益。

To minimise health risks and environmental pollution, water and wastewater treatment processes often use iron salts to eliminate phosphate and other pollutants. This generates large amounts of chemical sludge that is typically sent to landfill. The benefits of this new process will be the recovery of both the iron, which can be reused in the process, and the phosphate, which is a key component in fertiliser. Since phosphate is a limited natural resource with an increasingly high value, the recovery and recycling of this critical element in food production is highly important. The process will also avoid a large part of the sludge production and will make the water treatment processes more cost-effective.