An Overview Of Ngagel Water Treatment Plants Operations In Terms Of Water Quality Efficiency And Water Stability

Lassoued, Mehdi (2017) An Overview Of Ngagel Water Treatment Plants Operations In Terms Of Water Quality Efficiency And Water Stability. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Water Treatment Plant (WTP) Ngagel receive the raw water from Kali Surabaya (River), which has been polluted for more than 30 years by different sources, mostly coming from industries. In order to provide better drinking water services in Ngagel, WTP Ngagel with the second large capacity which is 4,450 L/s and as a part of Surya Sembada (PDAM Surabaya) is trying to improve its performance. As a result, there should be an evaluation of the technical performance for WTP Ngagel in terms of water quality efficiency and stability. Technical evaluation of WTP Ngagel in term of water quality efficiency is done by comparing the quality of raw water to the production water for 3(three) parameters: Turbidity, Organic Substances and Ammonia with reference to the Indonesian standards (Permenkes 492 in 2010). Then, technical evaluation in term of water stability is done by measuring the Langelier Saturation Index (LSI) and Ryznar Saturation Index (RSI). The two water quality indexes, LSI and RSI, were calculated in order to evaluate the chemical stability of the drinking water samples. The analyses of water quality efficiency shows that WTP Ngagel has a good efficiency to remove Turbidity, Organic Substances and Ammonia from the production water during 2016. It could reach 99.74% for Turbidity, 75.60% for Organic Substances and 100% for Ammonia. The analyses of water stability shows that WTP Ngagel I has an LSI of -0.061, Ngagel II with LSI of -0.27 and Ngagel III has an LSI of -0.033. The three installation of Ngagel has the same RSI of 7.3. Depending on these results it could be known that the quality of production water in Ngagel is corrosive. Chemical stability parameters of water quality in WTP Ngagel can improve drinking water quality. To decrease the corrosion in Ngagel production water and improve its quality, a caustic soda (sodium hydroxide) NaOH will be effective.

Item Type: Thesis (Masters)
Uncontrolled Keywords: Chemical Stability, langelier Index, Performance, Removal efficiency, Ryznar Index
Subjects: H Social Sciences > HD Industries. Land use. Labor > HD4465 Water utilities--Rates
Divisions: Faculty of Civil Engineering and Planning > Environment Engineering > 25101-(S2) Master Thesis
Depositing User: Mr. Mehdi Lassoued
Date Deposited: 31 Oct 2017 03:25
Last Modified: 08 Mar 2019 03:42
URI: https://repository.its.ac.id/id/eprint/45383

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