Khairunnisa, Khansa (2022) Kajian Kualitas Air Pada Periode Ripening Filter Di Ipa Ngagel II Pdam Surabaya. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Unit filtrasi merupakan salah satu unit pengolahan air yang menggunakan media untuk memisahkan padatan pada suspensi. Untuk memastikan unit ini berjalan dengan baik, salah satunya adalah dengan melakukan ripening filter. Ripening filter yaitu suatu periode awal saat filter dioperasikan setelah proses pencucian. Akhir dari periode ini adalah saat filter dapat beroperasi dengan optimal. Saat ripening berlangsung, unit filter mengalami lonjakan parameter kualitas air. Untuk mengetahui kualitas air pada periode ripening, dilakukan uji sampel kualitas air dari efluen unit filter di IPA Ngagel II. Penelitian dilakukan dengan mengambil sampel dari IPA Ngagel II untuk diuji nilai parameter kekeruhan, zat organik, TSS, dan mikroplastik. Titik pengambilan sampel adalah pada inlet dan outlet 6 filter, yaitu filter nomor 3, 5, 7, 8, 12, dan 15. Pemilihan filter didapatkan dari penelitian pendahuluan, di mana dilakukan uji kekeruhan terhadap 22 filter di IPA Ngagel II. Dari data ini kemudian dapat dihitung efisiensi filter. Untuk mengetahui kualitas air pada periode ripening, sampel di outlet pada waktu 1, 5, dan 10 menit saat operasi kembali setelah pencucian diuji. Selain itu, data sekunder yang diperlukan adalah kapasitas filter, media filter, dimensi filter, dan operasional filter saat operasi, termasuk saat pencucian. Data terkait unit filter di IPA Ngagel II adalah sebagai berikut. Kapasitas pengolahan 1 unit filter adalah 50 L/detik, di mana kecepatan filtrasi adalah 5 m3/m2/jam. Media yang digunakan adalah pasir silika dengan tebal 90 cm. Proses pencucian dilakukan dengan metode backwash maksimal 24 jam sekali atau saat headloss di filter sudah tinggi ditandai oleh muka air yang naik. Proses pencucian menggunakan udara yang dimasukkan oleh blower selama 5 menit, kemudian dilakukan backwash. Setelah proses backwash ini, filter dioperasikan kembali. Hasil uji kualitas air di inlet dan outlet adalah bahwa keenam filter dapat mengurangi kekeruhan sebesar 62,83% hingga 75,92%, zat organik sebesar 45,95% hingga 83,78%, TSS sebesar 69,57% hingga 86,96%, dan mikroplastik sebesar 68,75%-87,5%. Saat periode ripening, di menit pertama, nilai kekeruhan, zat organik, TSS, dan mikroplastik akan melonjak naik hingga zat organik melebihi baku mutu da kekeruhan di atas 1 NTU. Lalu, di beberapa filter pada menit kelima akan terus naik, hingga akhirnya semua parameter di seluruh filter nilainya turun saat menit kesepuluh yang menandakan akhir dari periode ripening dan filter beroperasi dengan optimal
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The filtration unit is a water treatment unit that uses media to separate solids in suspension. To ensure that this unit runs well, one way is to do a ripening filter. Ripening filter is an initial period when the filter is operated after the washing process. The end of this period is when the filter can operate optimally. When ripening takes place, the filter unit experiences a spike in water quality parameters. In order to determine the quality of water during the ripening period, a sample test of water quality was carried out from the filter unit effluent at IPA Ngagel II. The research was conducted by taking samples from the Ngagel II IPA to test the values for the parameters of turbidity, organic matter, TSS, and microplastics. Sampling points were at the inlet and outlet of 6 filters, namely filters number 3, 5, 7, 8, 12, and 15. Filter selection was obtained from preliminary research, where turbidity tests were carried out on 22 filters in IPA Ngagel II. From this data, filter efficiency can then be calculated. To determine the quality of water during the ripening period, samples at the outlet at 1, 5, and 10 minutes during operation were tested again after washing. In addition, the secondary data required is filter capacity, filter media, filter dimensions, and filter operation during operation, including washing. The data related to the filter units in IPA Ngagel II are as follows. The processing capacity of 1 filter unit is 50 L/second, where the filtration rate is 5 m3/m2/hour. The medium used is silica sand with a thickness of 90 cm. The washing process is carried out using the backwash method a maximum of once every 24 hours or when the head loss in the filter is high which is indicated by a rising water level. The washing process uses air introduced by the blower for 5 minutes, then backwashing is carried out. After this backwash process, the filter is operated again. The results of water quality tests at the inlet and outlet are that the six filters can reduce turbidity by 62.83% to 75.92%, organic matter by 45.95% to 83.78%, TSS by 69.57% to 86.96% , and microplastics by 68.75% -87.5%. During the ripening period, in the first minute, the turbidity, organic matter, TSS, and microplastic values will increase until the organic matter exceeds the quality standard and turbidity is above 1 NTU. Then, in some filters in the fifth minute it will continue to increase, until finally all parameters in all filters have their value decrease at the tenth minute which indicates the end of the ripening period and the filter operates optimally
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSL 628.168 Kha k-1 2022 |
| Uncontrolled Keywords: | backwash, filter, lonjakan kekeruhan, ripening filter |
| Subjects: | T Technology > TD Environmental technology. Sanitary engineering > TD259.2 Drinking water. Water quality |
| Divisions: | Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Environmental Engineering > 25201-(S1) Undergraduate Thesis |
| Depositing User: | EKO BUDI RAHARJO |
| Date Deposited: | 18 Jan 2023 04:08 |
| Last Modified: | 18 Jan 2023 04:08 |
| URI: | http://repository.its.ac.id/id/eprint/95458 |
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