Perbedaan Kadar Besi (Fe) pada Air Sumur Gali Di Dusun Wonodadi RT 07/ RW 10 yang Diberi PAC dengan yang Diberi Tawas

Mutmainah Kartini, Ratih Indrawati, Suwono Suwono

Abstract


Abstract: Water is one of the important components in human life. The results of observations by researcher, the Wonodadi Hamlet  RT 07 / RW 10 people using dig well water as clean water source. The dig well water used contains high Fe content, so the people adds PAC and alum (Aluminum Sulfate) before using water to reduce Fe content. The purpose of this research was to analyze the difference of Fe content in dug well water in Wonodadi Hamlet RT 07 / RW 10 which was PAC (Poly Aluminum Chloride) added with alum (Aluminum Sulfate) added. The research design used was quasi experimental research because it did not use the actual research design. The samples were dig well water treated by PAC 100 mg and alum 150 mg adds in every 1000 ml sample. The number of samples in this reserch was determined by replication formula, 16 samples of dig well water were PAC added and 16 samples of dig well water were alum added so that 32 samples were obtained. Samples of dig well water were taken at Wonodadi Hamlet RT 07 / RW 10. Analysis of Fe content in this research using AAS (Atomic Absorbtion Spectrophotometer) method. The average of Fe content in the dig well water added by PAC was 0,9513 ppm. The average of Fe content in dig well water which was added by alum was 1,6735 ppm. Hypothesis in this research is alternative hypothesis (Ha) that there is difference of Fe content on dig well water in Wonodadi Hamlet RT 07 / RW 10 which PAC added with alum added. The result of computerized data processing through Paired T-Test obtained value p = 0,000 (p <0,05). Based on these results, Ha is received means that there is a difference in Fe content dig well water in Wonodadi Hamlet RT 07 / RW 10 which was PAC added with alum added.

Abstrak: Air merupakan salah satu komponen penting dalam kehidupan manusia. Hasil observasi yang dilakukan peneliti, masyarakat Dusun Wonodadi RT 07 / RW 10 menggunakan air sumur gali sebagai sumber air bersih. Air sumur gali yang digunakan mengandung kadar Fe tinggi, sehingga masyarakat tersebut menambahkan PAC dan tawas (Aluminium Sulfat) sebelum menggunakan air untuk menurunkan kadar Fe. Tujuan penelitian ini untuk menganalisa perbedaan kadar Fe pada air sumur gali di Dusun Wonodadi RT 07 / RW 10 yang diberi PAC (Poly Aluminium Chloride) dengan yang diberi tawas (Aluminium Sulfat). Desain penelitian yang digunakan adalah penelitian quasi eksperimen karena tidak menggunakan rancangan penelitian yang sebenarnya. Sampel penelitian berupa air sumur gali yang diberi perlakuan dengan menambahkan PAC 100 mg dan tawas 150 mg pada setiap 1000 ml sampel. Jumlah sampel dalam penelitian ini ditentukan dengan rumus replikasi, 16 sampel air sumur gali diberi PAC dan 16 sampel air sumur gali diberi tawas sehingga didapat 32 sampel. Sampel air sumur gali diambil di Dusun Wonodadi RT 07 / RW 10. Analisa penentuan kadar Fe dalam penelitian ini menggunakan metode AAS (Atomic Absorbtion Spectrophotometer). Rata-rata kadar Fe pada air sumur gali yang ditambahkan PAC adalah 0,9513 ppm. Rata-rata kadar Fe pada air sumur gali yang ditambahkan tawas adalah 1,6735 ppm. Hipotesis pada penelitian ini adalah hipotesis alternatif (Ha) yaitu ada perbedaan kadar Fe pada air sumur gali di Dusun Wonodadi RT 07 / RW 10 yang diberi PAC dengan yang diberi tawas. Hasil pengolahan data secara komputerisasi melalui uji Paired T-Test diperoleh nilai p = 0,000 ( p < 0,05). Berdasarkan hasil tersebut, Ha diterima artinya ada perbedaan kadar Fe pada air sumur gali di Dusun Wonodadi RT 07 / RW 10 yang diberi PAC dengan yang diberi tawas.


Keywords


Besi (Fe); PAC; Tawas

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DOI: https://doi.org/10.30602/jlk.v2i1.319

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