在比利时的沙丘地区，可以实现水的再利用，以获得可持续的地下水生产。中试证明，通过膜技术的组合，如微滤（MF）预处理和反渗透（RO），可以重复使用污水和排水。尽管反渗透给水已采用微滤处理，但生物污染已被证明是低能膜的主要问题。由于生物污染对工艺的经济性有重要影响，因此进行了防止反渗透膜生物污染的实验。对废水进行了16个月的氯胺化试验，证明其能够控制生物污染。在对废水进行的另一项试验中，为了减少对环境的影响，对氯胺化的交叉使用进行了研究。另一个实验是利用膜过滤前的土壤通道进行的。 事实证明，这是一种防止生物污染的好方法，可以减少化学品的消耗。还对紫外线消毒的使用进行了测试。紫外线对生物污染有机体的可能性有影响，但当水通过反渗透膜时，无粘性效应存在。用低污染膜进行了简单的实验。本文对所有实验进行了全面的描述，包括实验方法、结果、优缺点。它还提供了为附近工业建造的反渗透工厂的信息，这些工厂没有采取预防措施来防止生物污染问题。包括18个参考文献、表格、图表。

Reuse of water can be implemented to obtain sustainable groundwater production ina dune area of Belgium. Pilot tests proved that it is possible to reusewastewater effluent and drainage water using a combination of membranetechnologies such as pre-treatment with microfiltration (MF) followed by reverse osmosis(RO). Although the feed water for reverse osmosis had been treated withmicrofiltration, biofouling proved to be the major problem with low-energy ROmembranes. As biofouling has an important impact on the economics of the process,experiments were conducted to prevent biofouling on RO membranes. Chloraminationof the wastewater effluent was tested for 16 months and proved capable tocontrolling biofouling. In an additional trial on wastewater effluent, theintermittent use of chloramination was investigated in order to reduce theenvironmental impact. Another experiment was conducted in which soil passage infront of membrane filtration was used. This proved to be a good way to preventbiofouling and chemical consumption could be reduced. The use of UV-disinfectionwas also tested. UV had an impact on the potential of biofouling organisms but noresidual effect is present when the water passes the RO membranes. Briefexperiments were undertaken with low-fouling membranes. This paper gives a fulldescription of all experiments including the methods, results, advantages anddisadvantages. It also provides information on RO plants that were built forindustry in the vicinity and where no precautions were taken to preventbiofouling problems. Includes 18 references, tables, figures.