Undip students create clean water treatment technology able to overcome wells that are contaminated with sea water. the coastal well water treatment system into clean water to meet bathing and washing needs is fronted by the Undip PKM team consisting of Titik Tiyas Nofanda (Physics 2014), Yoyon Wahyono (Physics 2013), Hafidz Nugroho (Physics 2014), and Istiqomah Budiyanto (Physics 2014), Yoyon Wahyono (Physics 2013), Hafidz Nugroho (Physics 2014), and Istiqomah Budiyanto (Mathematics 2014) under the guidance of Dr. Heri Sutanto, M.Si UNDIP S1-Physics Lecturer.

Undip PKM Undip PKM Team Leader Nofanda Already said that it was a common problem, that community wells on the coast contained salt from the interusion of seawater which absorbed into the ground when tidal flooding occurred from the sea. Tidal floods that occur due to an increase in water level from the melting of ice at the north and south poles due to global warming. As a result, coastal communities suffer from clean water crisis for bathing, washing, and toilet (MCK).

“The tool developed to treat salt water in coastal communities containing salt uses electrolysis filtration and ozonation methods so that the salt content, the content of impurities, and bacteria are reduced,” he said

“Sea water has an average salt content of 3.5%, which means that in 1 liter of sea water there are 35 grams of salt but not all of NaCl (Burhanuddin, 2001). While the electrolysis process is able to separate the salt content from water in the ion phase using an electric current that is flowed on two electrodes (cathode and anode). From this electrolysis process, we will see that the salt separates and becomes a salt crystal granule attached to the cathode using aluminum material. As for salt that settles will be filtered using a filtration layer of stone and sand of different sizes. Among the small rocks, silica sand and beach sand are used to filter with the flow from above and from below to maximize the filtration process. From the results of electrolysis and filtration, water will be ozone to reduce the bacterial content that is destroyed by O * which is an unstable atom of an ozone molecule that has the chemical formula O3. ”

“From the results of the pH test, TDS test, and electrical conductivity test, water that has been treated using this technology has changed. An increase in water quality in terms of the results of the pH test, TDS test, and electrical conductivity test. The team hopes that their work can be applied in the coastal community in the future so that it can help overcome problems in coastal communities that are experiencing a clean water crisis, “he added.