Information about the project from the rocks and the sand can be used instead of the filter insert made of useful minerals, various. Along with finding ways to filter water, good quality. So there's a group concept in bringing the rock and sand, the sea water filter applied. By a comparative study between the stones and sand filter layers with resin from the preliminary trial found that sea water salinity, output is approximately 25 by PSU salinity of the sea is the common 30 PSU, we found that it may be because the water flow rate is too fast and thus the flow with a 2.The flow from top to bottom with side flow method. It is found that a top-to-bottom/flow filter stone and sand worms. The production rate will be able to provide the most value, and water PH may be the inverse value to EC from such experiments can be the primary application at masueksa water flow patterns and application that can produce quality water that can be used to consume. Experiment 2, we find that the range that the electricity that is best suited to perform the reaction is 5 volts, and this time we use to filter which is 15 minutes longer than the first time, the effect is salty water, reduced to 3 PSU.
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