Studi Penggunaan Streaming Current Monitor (SCM) dalam Penentuan Dosis Optimum Koagulan di IPA Mojolamong Kabupaten Mojokerto

Rahma, Primannisa Aulia (2021) Studi Penggunaan Streaming Current Monitor (SCM) dalam Penentuan Dosis Optimum Koagulan di IPA Mojolamong Kabupaten Mojokerto. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Metode Jar Tes yang digunakan untuk menentukan jumlah dosis bahan kimia pada proses koagulasi di instalasi pengolahan air (IPA) mempunyai proses pengukuran kekeruhan yang dilakukan bersifat intermiten, sehingga untuk mencapai dosis koagulan yang optimum membutuhkan waktu yang lama. Sebagai alternatif, Streaming Current Monitor (SCM) yang merupakan salah satu metode pengendalian proses koagulasi dengan menggunakan prinsip nilai zeta potensial pada partikel koloida yang terkandung dalam fluida zat cair (air baku). Pengoperasian alat SCM dilengkapi dengan penggunaan Supervisory Control and Data Acquisition (SCADA) yaitu sistem kendali industri berbasis komputer yang dipakai untuk monitoring sistem atau kontrol sistem. Studi penelitian ini dilakukan untuk menentukan keefektifan kinerja dari SCM dalam penentuan dosis koagulan dibandingkan dengan metode jar tes pada Instalasi Pengolahan Air (IPA) Mojolamong kabupaten Mojokerto, menentukan dosis koagulan berdasarkan nilai kekeruhan air dan zeta potensial, serta mengidentifikasi faktor yang dapat mempengaruhi kinerja dari SCM. Penelitian dilakukan dengan pengumpulan data hasil jar tes dan data SCM yang berupa variabel kekeruhan (NTU) air baku sesudah dan sebelum proses, dosis koagulan (PAC), dan nilai zeta potensial. Dilakukan analisis perbandingan pengoperasian sistem konvensional dengan SCM dan SCADA, analisis perbandingan jumlah dosis koagulan yang digunakan, analisis data parameter operasional SCM: dosis koagulan dan zeta potensial, serta analisis identifikasi faktor kinerja sistem operasi dengan SCM. Hasil studi menunjukkan bahwa metode penentuan dosis dengan SCM dan SCADA 24 % lebih ekonomis daripada metode jar tes dalam hal penggunaan bahan kimia. Analisis korelasi antara dosis koagulan dengan persentase penurunan kekeruhan menghasilkan koefisisen korelasi sebesar 0,71299. Sedangkan pada hubungan antara nilai zeta potensial dengan persentase penurunan kekeruhan didapatkan koefisien korelasi sebesar -0,1081. Penurunan kekeruhan optimum terjadi pada rentang zeta potensial -90 sampai dengan -150. Persamaan analisis regresi antara dosis koagulan dengan nilai kekeruhan air baku (NTU) adalah y = 0,42x + 20,678. Faktor yang diidentifikasi mempengaruhi kinerja sistem operasi dengan SCM adalah pengawasan dan pemantauan yang cermat serta pemeliharaan dan kalibrasi yang rutin. ================================================================================================ The Jar test method used to determine the doses of chemicals in the coagulation process in water treatment plants (WTP) has an intermittent turbidity measurement process; therefore achieving the optimum coagulant dose takes a long time. As an alternative, Streaming Current Monitor (SCM), which is a method of controlling the coagulation process by using the principle of zeta potential value on colloid particles contained in the liquid fluid (raw water), can be used. The operation of the SCM tool is equipped with the use of Supervisory Control and Data Acquisition (SCADA), a computer-based industrial control system used for system monitoring or system control. This study was conducted to determine the effectiveness of the performance of SCM in determining the coagulant dose compared to the jar test method at the Mojolamong Water Treatment Plant (WTP) Mojokerto Regency, determine the coagulant dose based on the value of water turbidity and potential zeta, and identify factors that can affect the performance of SCM. The research was conducted by collecting jar test data and SCM data in the form of the turbidity variable (NTU) of raw water after and before processing, coagulant dose (PAC), and potential zeta values. Comparison analysis of conventional system operation with SCM and SCADA, comparative analysis of the number of coagulant doses used, data analysis of operational parameters of SCM: coagulant dose, potential zeta, and analysis of identification of operating system performance factors with SCM. The results of the study indicated that the dosage method using SCM and SCADA was 24% more economical than the jar test method in terms of chemical use. The correlation analysis between the coagulant dose and the percentage reduction in turbidity resulted in a correlation coefficient of 0,71299. Whereas in the relationship between the zeta potential value and the percentage reduction in turbidity, the correlation coefficient is -0,1081. The optimum reduction in turbidity occurred in the zeta potential range of -90 to -150. The regression analysis equation between the coagulant dose and the turbidity value of raw water (NTU) is y = 0.42x + 20.678. The factors identified as affecting the performance of the operating system with SCM were careful monitoring and monitoring as well as routine maintenance and calibration.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Dosis Koagulan, Koagulasi, Streaming Current Monitor, Zeta Potensial====================================== Coagulant Dosage, Coagulation, Streaming Current Monitor, Zeta Potential
Subjects: T Technology > TD Environmental technology. Sanitary engineering
T Technology > TD Environmental technology. Sanitary engineering > TD455 Chemical precipitation. Coagulation. Flocculation. Water--Purification--Flocculation.
Divisions: Faculty of Civil Engineering and Planning > Environment Engineering > 25201-(S1) Undergraduate Thesis
Depositing User: Primannisa Aulia Rahma
Date Deposited: 03 Mar 2021 12:32
Last Modified: 03 Mar 2021 12:32
URI: https://repository.its.ac.id/id/eprint/83363

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