Huda, Syamsul (2019) Kajian Pengendapan Partikel Flokulen dengan Hydrocyclone Terbuka. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Unit Hydrocyclone adalah alat yang digunakan untuk memisahkan antara solid dan liquid berdasarkan perbedaan densitas. Pada penelitian ini, unit hydrocyclone digunakan sebagai pengganti bak sedimentasi tipe II yang berfungsi untuk mengendapkan partikel flokulen dari proses koagulasi-flokulasi. Kajian mengenai hydrocyclone ini bertujuan untuk menentukan nilai surface loading dan waktu detensi optimum, serta menentukan efisiensi penyisihan kekeruhan dan TSS pada hasil sampel penelitian. Selain itu, penelitian ini juga menentukan rentang tingkat kekeruhan yang dapat digunakan pada hydrocyclone.
Penelitian ini menguji pengaruh variasi surface loading, waktu detensi, dan tingkat kekeruhan terhadap efisiensi penurunan kekeruhan dan TSS pada unit hydrocyclone. Nilai variasi surface loading yang digunakan adalah 2,5, 3, dan 3,5 m3/m2.jam. Waktu detensi yang digunakan untuk menentukan efisiensi penyisihan kekeruhan adalah 6,3, 7,3, 8, 8,8, 9,3, 9,7, 11,2, 11,3, dan 13,6 menit. Nilai waktu detensi ini dihitung dari variasi surface loading dan variasi panjang silinder yang digunakan hydrocyclone (20, 30, dan 40 cm). Sedangkan variasi tingkat kekeruhan yang digunakan adalah 30-45, 55-90, dan 100-180 NTU. Unit yang digunakan dalam penelitian ini adalah unit pipa PVC sebagai unit pengaduk cepat, unit selang berputar sebagai unit pengaduk lambat, dan unit hydrocyclone terbuka sebagai unit sedimentasi. Pengoperasian unit dilakukan secara kontinyu selama 20 menit setelah operasi dalam keadaan steady. Selama pengoperasian berlangsung, debit pada underflow hydrocyclone selalu dipantau agar tidak terjadi gangguan ketika partikel flokulen yang mengendap mencapai maksimum.
Hasil penelitian menunjukkan bahwa surface loading 2,5 m3/m2.jam (debit 1,3 liter/menit) dan waktu detensi selama 11,3 menit menghasilkan efisiensi penyisihan kekeruhan dan TSS paling besar dengan masing-masing nilai efisiensi sebesar 89 dan 63 %. Adapun tingkat kekeruhan 100 – 180 NTU memiliki efisiensi penyisihan kekeruhan tertinggi dengan nilai efisiensi sebesar 89 %.
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Hydrocyclone is a unit that used to separate between solids and liquids elements based on the difference of density. In this research, hydrocyclone unit is used as the substitute for sedimentation tank type II which the function is to precipitate flocculent particles from koagulation-flocculation process. This hydrocyclone study aimed to determine the surface loading rate, determine the optimum detention time, and determine the efficiency of turbidity and TSS removal. Moreover, this research is also determine the range of turbidity level that can be used on hydrocyclone.
This research examines the effect of surface loading variation, variation of detention time and variation of turbidity level to the efficiency of turbidity and TSS removal on hydrocyclone unit. The variation of surface loading that used in this research are 2.5, 3, and 3.5 m3/m2.hour. Variation of detention time that used to determine the efficiency of turbidity removal are 6.3, 7.3, 8, 8.8, 9.3, 9.7, 11.2, 11.3, and 13.6 minute. The values of detention time variation obtained from the flow variation calculation and the variation of hydrocyclone’s cylinder length (20, 30, and 40 cm). while the variation of turbidity level that used are 30-45, 55-95, and 100-180 NTU. The unit that used in this research are PVC pipe unit that used as the flash-mixer, spinning hose unit as the slow-mixer, and opened-hydrocyclone unit as the sedimentation unit. The operation of the reactor is carried out continuously for twenty minutes after the operation is in steady state. During the operation, flow on the underflow of the hydrocyclone is monitored so that there is no disturbance occurs when the flocculent particles reach the maximum stage of the precipitation process.
The result of this research showed that with the value of surface loading 2.5 m3/m2.hour (flow 1.3 liter/minute) and detention time 11.3 minute, gives the highest efficiency of turbidity and TSS removal with each efficiency value 89% and 63%. As for the level of turbidity 100-180 NTU has the highest removal efficiency of turbidity removal with the efficiency value is 89%.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSL 628.162 Hud k-1 2019 |
| Uncontrolled Keywords: | Hydrocyclone, Kekeruhan, Surface Loading, Waktu Detensi |
| Subjects: | T Technology > TD Environmental technology. Sanitary engineering > TD375 Turbidity--Measurement. T Technology > TD Environmental technology. Sanitary engineering > TD433 Water treatment plants T Technology > TD Environmental technology. Sanitary engineering > TD455 Chemical precipitation. Coagulation. Flocculation. Water--Purification--Flocculation. |
| Divisions: | Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Environmental Engineering > 25201-(S1) Undergraduate Thesis |
| Depositing User: | Syamsul Huda |
| Date Deposited: | 10 May 2022 08:21 |
| Last Modified: | 10 May 2022 08:21 |
| URI: | http://repository.its.ac.id/id/eprint/60833 |
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