摘要:
The present invention relates to a filter comprising a carbon block enveloped with spiral wound layer of non-pleated fabric enveloped with spirally wound layer of pleated fabric. The combination of these three elements gives more than 3.5 log cyst removal from contaminated water, over prolonged usage of more than 2300 liters of water. The invention also relates to a gravity filtration device that comprises the filter of the invention. A method of filtering water is also claimed where the water flows first through the pleated fabric, then through the non-pleated fabric and then through the carbon block.
摘要:
The invention relates to a water purification device and a process for water purification and in particular relates to a water purification device that may be used as a gravity fed system or adapted to be connected to the main water supply. It is a single chamber water purification device which is capable of dosing a controlled level of a biocide to the water and has a filtration unit that functions as a filter-cum-scavenger. This water purification device provides several advantages over the prior art especially in terms of reducing the complexity of the device thus making it economical and reducing the number of replaceable parts without affecting the performance in terms of microbial safety or flow rate. Another advantage of the system is that it can be adapted for use with solid and liquid biocides.