Pengaruh Tekanan Dan Spacer Terhadap Kinerja Immersed Membrane Mikrofiltrasi

Agustina, Inayah (2022) Pengaruh Tekanan Dan Spacer Terhadap Kinerja Immersed Membrane Mikrofiltrasi. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Tingkat pencemaran Kali Surabaya yang semakin tinggi menyebabkan penurunan kualitas air. Namun, pengolahan air yang diterapkan pada PDAM Kota Surabaya untukmengolah Kali Surabaya masih menggunakan proses konvensional dimana proses pengolahan akan semakin berat dengan kualitas air baku yang semakin menurun. Membran mikrofiltrasi terendam merupakan teknologi yang andal dalam pengolahan air dibandingkan teknologi konvensional. Meski demikian, kinerja membran semakin menurun karena adanya deposit yang terjadi di permukaan membran dan menyebabkan terjadinya fouling. Perlu adanya strategi yang efektif untuk mengontrol fouling dan mempertahankan kapasitas produksi membran agar dapat meminimalisasi konsumsi energi dan biaya operasional membran. Salah satu alternatif yang dapat dilakukan adalah memberikan tekanan operasi yang optimal dan pemberian sekat (spacer) dengan sudut kontak yang optimal untuk mengurangi fouling. Penelitian ini bertujuan untuk mengkaji pengaruh tekanan dan spacer terhadap kinerja membran keramik mikrofiltrasi yang diukur berdasarkan parameter kualitas dan kuantitas. Parameter penelitian yang digunakan yaitu nilai kekeruhan, TSS, zat organik, total coliform, E. coli dan jumlah mikroplastik sedangkan parameter kuantitas meliputi fluks, jumlah produksi air (permeat) dan lama operasi membran. Penelitian ini menguji membran keramik mikrofiltrasi flat-sheet terendam pada unit sedimentasi PDAM Ngagel III Kota Surabaya. Operasi membran menggunakan tekanan hisap dan aliran cross-flow dengan variabel tekanan (0,6 bar, 0,7 bar, 0,9 bar) serta kemiringan spacer (75°, 90°, 105° dan tanpa spacer). Berdasarkan hasil penelitian didapatkan pengaruh tekanan optimal terjadi pada tekanan 0,7 bar dengan efisiensi penyisihan parameter kekeruhan, TSS, zat organik, mikroplastik, total coliform dan E. coli berturut-turut yaitu 94,66%, 96,88%, 24,29%, 62,27%, 100% dan 100%. Nilai fluks rata-rata yang tercapai pada tekanan 0,7 bar sebesar 64,33 L/m2 .jam dengan lama operasi 55 jam dan volume produksi permeat 530,70 L. Pengaruh spacer optimal tercapai pada kondisi kemiringan 90° dengan efisiensi penyisihan parameter kekeruhan, TSS, zat organik, mikroplastik, total coliform dan E.coli berturut-turut sebesar 95,12%, 64,58%, 28,75%, 84,74%, 99,99% dan 100%. Rata-rata nilai fluks yang dihasilkan sebesar 66,78 L/m2 .jam dengan lama operasi 90 jam dan volume produksi permeat 901,55 L
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The higher level of pollution in Kali Surabaya causes a decrease in water quality. However, the water treatment applied in PDAM Surabaya City to treat Kali Surabaya still uses a conventional process where the treatment process will get even harder with decreasing quality of raw water. Immersed microfiltration membrane is a reliable technology in water treatment compared to conventional technology. Nevertheless, the performance of the membrane decreases due to deposits that occur on the membrane surface and lead to fouling. An effective strategy is needed to control fouling and maintain membrane production capacity in order to minimize energy consumption and membrane operational costs. One alternative that can be done is to provide optimal operating pressure and provide a spacer with an optimal contact angle to reduce fouling. This study aims to examine the effect of pressure and spacers on the performance of microfiltration ceramic membrane measured based on quality and quantity parameters. The research parameters used were turbidity, TSS, organic matter, total coliform, E. coli and the number of microplastic while the quantity parameters included flux, amount of water production (permeate) and the duration of membrane operation before fouling. This study tested submerged flat-sheet microfiltration ceramic membranes in sedimentation unit of PDAM Ngagel III Surabaya City. Membran operation used suction pressure and cross-flow with variable pressure (0.6 bar, 0.7 bar, 0.9 bar) and spacer slopes (75°, 90°, 105° and without spacers). Based on the results of the study, it was found that the effect of optimal pressure occurred at 0.7 bar with the efficiency of eliminating turbidity, TSS, organic matter, microplastic, total coliform, and E. coli parameters respectively, 94,66%, 96,88%, 24,29%, 62,27%, 100% and 100%. The average flux value at pressure 0.7 bar is 64,33 L/m2 .hour with operating duration of 55 hours and permeate production volume 530,70 L. The optimal spacer effect was achieved at slope of 90° with the efficiency of eliminating turbidity, TSS, organic matter, microplastic, total coliform and E. coli parameters respectively 95,12%, 64,58%, 28,75%, 84,74%, 99,99% and 100%. The average flux value was 66,78 L/m2 .hour with an operating duration of 90 hours and permeate production volume of 901,55 L.

Item Type:	Thesis (Other)
Additional Information:	RSL 628.162 Agu p-1 2022
Uncontrolled Keywords:	Cross-flow, Fouling, Mikrofiltrasi, Spacer, Tekanan, Cross-flow, Fouling, Microfiltration, Pressure, Spacer
Subjects:	T Technology > TD Environmental technology. Sanitary engineering > TD433 Water treatment plants
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Environmental Engineering > 25201-(S1) Undergraduate Thesis
Depositing User:	Mr. Marsudiyana -
Date Deposited:	06 Dec 2024 06:27
Last Modified:	06 Dec 2024 06:27
URI:	http://repository.its.ac.id/id/eprint/115914

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