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Water has a very important role for human survival. Well water is a source of ground water. Well water in general contains several types of minerals one of which is often found is the mineral zinc (Zn). Excessive consumption of Zn can lead to other mineral deficiencies. A dose of zinc consumption (Zn) of 2 grams or more can cause vomiting, diarrhea, fever, extreme fatigue, anemia, and reproductive disorders. One of the treatment techniques that can be used to reduce Zn content in well water is absorption, using briquette media. The absorbent used is durian skin briquettes as one of the filter media in the filtering. The purpose of this study was to determine the effectiveness of durian skin briquettes in reducing Zn levels in well water. This type of research used is quasi-experimental research designs with pre and post test design. Samples in the form of well water with filtering treatment with 15 cm gravel filter media, 20 cm sand and durian skin briquettes with a thickness of 45 cm, 50 cm, 55 cm and 60 cm durian skin briquettes. Each repetition is done 3 times. Where the water is filtered as much as 6 L and takes 18 minutes during filtering. The results showed that the sample before filtering well water had zinc levels of 21.38 mg / l. In screening with briquette thickness of 45 cm, 50 cm, 55 cm and 60 cm respectively the average levels of Zn were 8.66 mg / l, 8.05 mg / l, 7.47 mg / l and 6.97 mg / l. Briquette layer with a thickness of 60 cm is most effective in reducing the level of Zn with a value before filtering at 21.38 mg/l and after a screening of 6.97 mg/L. Reduction of zinc levels after screening was conducted at 14.41 mg/l with a percentage of 67.39%. In the results of the filtering there is a decrease in the Zn content of well water, so it can be concluded that the use of durian skin briquettes as a filter media is effective in reducing Zn levels. The obstacle that was found during the implementation of filtering well water with durian skin briquettes is that it takes a long time in the screening proces.

Test the Effectiveness of Durian Skin Briquettes in Reducing Zinc Content (Zn) in Well Water