Air merupakan komponen utama baik dalam tanaman maupun hewan termasuk manusia, masyarakat di Kabupaten Bantul, khususnya Pedukuhan Bantul Krajan, Desa Bantul, Kecamatan Bantul, Bantul, Daerah Istimewa Yogyakarta memanfaatkan sumur sebagai sumber utama persediaan air bersih. Masalah yang sering dihadapi oleh masyarakat yaitu tingginya kadar besi dan mangan di dalam air yang menyebabkan kualitas fisik air menurun, air menjadi keruh dan berbau amis. Penelitian ini bertujuan untuk mengetahui penurunan kandungan Besi (Fe), Mangan (Mn) dan Kekeruhan pada air sumur gali dengan pengolahan air sederhana dan manfaat pasir vulkanik sebagai media filtrasi terhadap penurunan kandungan Besi (Fe), Mangan (Mn) dan Kekeruhan pada air sumur gali. Penelitian ini merupakan penelitian Experiment dengan desain penelitian Pre test - Post test with Control Group Design menggunakan 5 pengulangan. Sedangkan untuk menguji hipotesis data yang diperoleh diuji secara deskriptif yang kemudian diuji secara analitik menggunakan statistik uji T-test terikat dengan program SPSS 16.0 for Windows. Hasil penelitian dari pengolahan air sederhana menggunakan media pasir vulkanik mampu menurunkan kandungan Fe sebesar 1,34 mg/l, kandungan Mn sebesar 0,6 mg/l dan penurunan kekeruhan sebesar 11,51 NTU. Berdasarkan pengujian statistik dinyatakan bahwa ada penurunan yang bermakna antara pretest dan posttest kadar besi (Fe), mangan (Mn) dan kekeruhan yang ditunjukkan dengan nilai Sig. < 0,05. Dengan demikian diketahui bahwa untuk menghilangkan zat besi, mangan dan kekeruhan yang berbentuk senyawa organik dan koloid cukup dilakukan pengolahan air sederhana yaitu koagulasi dilanjutkan dengan proses filtrasi menggunakan media pasir vulkanik yang memiliki sifat porous, mudah diperoleh dan harganya relatif murah.
Water is the most essential need for people to fulfill their daily needs. Residents in SidomulyoHamlet, of Trimulyo Village, in Sleman District, use dug wells as the primary source of clean water supply. However, the water quality gained is low because of high iron content in it. The studywas aimed to determine the differences between sand and activated carbon as filtration mediafor decreasing Fe concentration, by conducting a “pre-test post-test with control group” designedexperiment with five replications. The study results showed that sand media was able reduce theFe in average of 1.18 mg/l, while with activated carbon media it was 1.27 mg/l, and in the controlgroup it was 0.4 mg/l. The analysis of one way anova test at 95 % confidence level obtained pvalue <0,001, which means that the differences is significant. To conclude, to decrease the Fecontent in Sidomulyo Hamlet, the well water can be processed by filtration, either with sand oractivated carbon. Nonetheless, activated carbon media is proved more effective.
Sanitation at tourists places is one effort of the application of public places sanitation, which is useful for the convenience, safety and satisfaction of tourists. Based on the preliminary survey conducted at Gajah Mungkur Tourists Area in Wonogiri, some problems were found regarding with the provision of sanitation facilities. The study was aimed to know the condition of sanita-tion facilities in two tourists destination there, i.e. Sendang Asri Recreation Park and Gajah Mungkur Waterboom as well as to know the satisfaction level of the visiting tourists, by con-ducting a cross sectional designed survey, whose results were analyzed descriptively and ana-litically. The respondents, who were interviewed for determining the satisfaction level, were 82 tourists who had visited the two sites, meanwhile, the condition of the facilities were measured by using the standard check-list. Results of the study showed that the sanitation condition in Sendang Asri was classified as “not properly healthy”, and in Waterboom was classified as “properly healthy”. The tourists who satisfied with sanitation facilities in Sendang Asri and Wa-terboom, were 37,80 % and 89,02 % respectively. The result of statistical test by employing chi-square test at 95 % confidence level, concluded that sanitation facility condition has significant correlation with tourists’ satisfaction level. Based on these findings, management of the two re-sorts and Tourism Agency of Wonogiri Regency were advised to upgrade the condition of sani-tation facilities in Gajah Mungkur Tourists Area.
Etawa goat milk industry located in Kemirikebo, Girikerto, Turi, Sleman, Yogyakarta do not have waste water treatment. Waste water from dairy industry contains abundant organic materials. Based on the preliminary survey the results of BOD levels were 518 mg l and the TSS levels were 234 mg/l. The dairy industry's waste water has direct impact on the environment and public health. An alternative to treat the waste waste is by using biofilter system wastewater treatment reactor with bioball media. The purpose of this research is to know the qualty improvement of the wastewater by using this reactor. The research type was an experiment with pre-test post-test with control design, and was conducted in February to April 2019. The data were analyses by employing independent sample t-test with ? = 0.05. The study results show that the mean de-crease for BOD levels in the control group was 6,79% and in the treatment group was 90,27%. In terms of TSS levels, the mean decrease in the control group was 8,98% and in the treatment group was 68,59%. It can be concluded that the wastewater treatment reactor affects the quality of wastewater of Agro Prima dairy industry.
Air adalah kebutuhan pokok bagi kehidupan manusia. Masalah yang dihadapi yaitu tingginya kesadahan pada air sumur, tingkat kesadahan air tersebut berada pada tingkat sangat keras. Hal tersebut bila dikonsumsi secara terus-menerus akan mengakibatkan gangguan kesehatan yaitu pada fungsi ginjal. Penelitian ini bertujuan untuk mengetahui tingkat penurunan kesadahan air sumur gali menggunakan variasi ketebalan arang aktif tempurung kelapa yaitu 40, 60, dan 80 cm dengan melalui saringan pasir 90 cm. Jenis penelitian yang dilakukan adalah rancangan eksperimental non random atau disebut juga Non-randomized pretest-posttest control group design. Hasil penelitian menunjukkan penurunan kadar kesadahan setelah melewati arang aktif tempurung kelapa pada ketebalan 40 cm dan saringan pasir 90 cm sebesar 169 mg/L atau 37.97%, arang aktif tempurung kelapa pada ketebalan 60 cm dan saringan pasir 90 cm sebesar 230.33 mg/L atau 51.75%, dan arang aktif tempurung kelapa pada ketebalan 80 cm dan saringan pasir 90 cm sebesar 297.8 mg/L atau 66.91%. Hasil pada uji One Way Anova menunjukkan nilai sig. sebesar 0,002 < 0,05 sehingga diasumsikan bahwa variasi ketebalan arang aktif tempurung kelapa pada proses penyaringan air sumur gali berpengaruh terhadap penurunan kesadahan. Berdasarkan hasil penelitian didapatkan hasil penyaringan yang paling efektif yaitu ketebalan 80 cm sebesar 297.8 mg/L atau 66.91%.
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