“Exxchange”动态膜工艺由Exxflow管状布动态膜支撑过滤系统和适用于去除水中某些化合物的适当膜材料组成。铁和锰可以通过预氧化以非常短的接触时间去除。与传统过滤系统相比，它的一个主要优点是能够处理相对较高的浓度（高达5 mg/l），而无需事先进行沉淀。粉末活性炭（PAC）作为膜的使用使阿特拉津从地下水（0.3至0.5微克/升）中去除至0.05微克/升以下的浓度，使用的PAC剂量小于30毫克/升。粉末离子交换树脂可作为一个连续过程用于去除硝酸盐。用过的树脂从水中分离出来，用盐水再生，清洗，然后返回，以便在工艺中重复使用。在中试试验中，含65 mg NO3/l的地下水已降至15 mg/l。

"Exxchange" dynamic membrane processes consist of the Exxflow tubular cloth dynamic membrane support filter system combined with the appropriate membrane material suitable for the removal of certain compounds from waters. Iron and manganese can be removed using pre-oxidation with very short contact times. A major advantage over conventional filtration systems is its ability to deal with relatively high concentrations (up to 5 mg/l) without the need for a prior sedimentation stage. The use of powdered activated carbon (PAC) as a membrane has enabled the removal of Atrazine from a groundwater (0.3 to 0.5 ug/l) to concentrations below 0.05 ug/l using a PAC dose of less than 30 mg/l. Powdered ion exchange resin can be used to remove nitrate as a continuous process. The used resin is separated from the water, regenerated using brine, washed and then returned for reuse in the process. Groundwater containing 65 mg NO3/l has been reduced to 15 mg/l in pilot plant experiments.