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Journal : Journal of Scientech Research and Development

PENURUNAN KONSENTRASI DETERGEN PADA LIMBAH INDUSTRI LAUNDRY MENGGUNAKAN METODE SETTLEMENT Ca(OH)2 Munawar Ali; Dwi Sukma Donoriyanto; Nur Rahmawati
Journal of Scientech Research and Development Vol 5 No 1 (2023): JSRD, June 2023
Publisher : Ikatan Dosen Menulis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56670/jsrd.v5i1.104

Abstract

Limbah laundry sering dikeluhkan sebagai salah satu penyebab rusaknya ekosistem sungai. Tujuan dari penelitian ini adalah untuk mengetahui kemampuan Ca(OH)2 dalam menurunkan konsentrasi detergen pada limbah laundry. Metode yang digunakan dalam penelitian ini adalah metode pengendapan dengan menggunakan Ca(OH)2 , dengan cara sebagai berikut: 500 ml sampel dimasukkan ke dalam beaker glass, kemudian dimasukkan ke dalam test jar. Lakukan pengukuran pH dan suhu sebelum proses dilakukan. Setiap sampel dalam beaker glass diberi Ca(OH)2 yang telah dibuat dari 3, 6, 9, 12, dan 15 gr CaO dengan penambahan H2O sesuai perhitungan. Kemudian dilakukan pengadukan dengan kecepatan 80 rpm selama 15, 30, 45, 60, dan 75 menit. Setelah diaduk, campuran dimasukkan ke dalam inhoff cone untuk mengukur jumlah endapan. Lakukan pemeriksaan terakhir pada pH, tingkat deterjen, dan suhu. Dari penelitian ini diperoleh hasil terbaik yaitu pada waktu pengadukan 45 menit dengan kecepatan pengadukan 80 rpm, penurunan kadar deterjen sebesar 98,03%.
IMPROVEMENT OF CLEAN WATER PRODUCT QUALITY THROUGH DESINFECTION PROCESS Munawar Ali; Dwi Sukma Donoriyanto; Nur Rahmawati
Journal of Scientech Research and Development Vol 4 No 2 (2022): JSRD, December 2022
Publisher : Ikatan Dosen Menulis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56670/jsrd.v4i2.105

Abstract

In the process of treating raw water into clean water, the pathogenic bacteria must be eliminated. The process of eliminating pathogenic bacteria which then cause an unpleasant odor can be carried out by disinfection. The thing that needs to be considered in the context of disinfection is how to prevent the transfer of germs to the human body through clean water by breaking the chain between the two by means of disinfection. This research begins with a laboratory test of the total coliform content in water treated by Biofilter without disinfection. The laboratory test results showed that the content of Fecal Coli was 1880/100 ml and the bacteria in the Coli group were 2060/100 ml. This parameter must be reduced to the limit according to the Environmental Quality Standard (BML) using a disinfection treatment. From the observations made on the coagulation process from raw water it can be informed that in the range of observed variables, with an increase in the dose of Calcium Hypochlorite (Ca (OCl) 2) from 1 mg / lt to 3 mg / l in the disinfection process, the number of E. coli bacteria which is being lowered more and more. At a dose of Calcium Hypochlorite Ca (OCl) 2 2.5 mg in 1 liter of raw water for the Kebon Agung Canal Drainage Channel with a stirring time of 30 minutes was able to reduce the number of E. Coli bacteria by 99, 40%.