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Journal : BERKALA FISIKA

RANCANG BANGUN SISTEM PENJERNIHAN DAN DEKONTAMINASI AIR SUNGAI BERBASIS BIOSAND FILTER DAN LAMPU ULTRAVIOLET Endarko, Endarko; Putro, Triswantoro; Nuzula, Nike Iza; Armawati, Nuning; Wardana, Adi; Rubiyanto, Agus; Muntini, Melania S
BERKALA FISIKA Vol 16, No 3 (2013): Berkala Fisika
Publisher : BERKALA FISIKA

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Abstract

Design and fabrication of appropriate technology (biosand filter) that is directly can beapplied for community has successfully been carried out for providing clean water. Thetechnology is adopted from slow sand filter method. Biosand filter that has been fabricated which is technology that is able to filter river water become clean water through filtration process from sand, gravel and an active carbon. For getting drinkable water from river water, biosand filter hasbeen combined with reverse osmosis system and ultraviolet disinfection. System of reverse osmosisand ultraviolet disinfection are used to reduce any bacteria, virus and total dissolved solids (TDS)from treated water which is resulted from biosand filter process. The results from Balai BesarLaboratorium Kesehatan Surabaya (BBLKS) has been declared that treated water from biosandfilter is met the test standards chemical and physical according to the regulation. Meanwhile theprocessed water from process through biosand filter, reverse osmosis and ultraviolet disinfectionis got predicate as drinkable water with met the test standards microbiological, chemical andphysical.Keywords: biosand filter, reverse osmosis, ultraviolet, drinking water
RANCANG BANGUN ALAT UKUR KEKERUHAN AIR BERBASIS MIKROKONTROLER Eka Nuzula, Nike; Endarko, Endarko
BERKALA FISIKA Vol 16, No 4 (2013): Berkala Fisika
Publisher : BERKALA FISIKA

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Abstract

Turbidity meter based on microcontroller has succesfully been designed and fabricated. The photodiode as sensor and a LED as light source were used for measuring level of waterturbidity whereas microcontroller ATMega 8535 was used for data processing. The turbidity levelof water is measured based on Nephelometer method. The LED and photodiode detector were positioned parallel to each other at a distance of 2 inches. The measurement results indicated that the turbidity meter could be used to measure the turbidity level of water in the range 0 – 200 NTUand the maximum of standard deviation was at 1.33 NTU.Keywords : Turbidity, NTU, Photodiod, LED, Nephelometer