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All Journal Journal of Environmental Engineering & Waste Management Jurnal Lingkungan dan Sumberdaya Alam (JURNALIS)
Rizka Dwi Apriliani
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Chemical Engineering, Chemistry & Bioengineering Energy Engineering Environmental Science

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The Analysis of pH Performance for Equalization Detention Time Design Case Study : WWTP2 PT. Jababeka Infrastruktur Rizka Dwi Apriliani
Journal of Environmental Engineering and Waste Management Vol 5, No 1 (2020)
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1045.773 KB) | DOI: 10.33021/jenv.v5i1.988

Abstract

Abstract. PT. Jababeka Infrastruktur is a subsidiary company of PT. Jababeka Tbk., as estate manager. One of the PT. Jababeka Infrastruktur duty is manage Wastewater Treatment Plant 2 (WWTP2). The most of incoming wastewater in WWTP2 PT. Jababeka Infrastruktur is came from food industries, whereas has potential degradable to fatty acid and caused the pH tend to be low and fluctuates. pH is one of the important parameters, especially in biological wastewater treatment system as applied in WWTP2. pH value can affect the microorganism performance in decompose the pollutant compound in wastewater. pH control action is needed to make the treatment run better. Objectives: To know the primary settling tank (PST) with   ̴3 hours detention time performance in equalizing wastewater pH. To develop the new equalization tank, it was provide an analysis the pH inlet performance by measuring pH of wastewater. Method and results: Statistical analysis of secondary data by comparing standard deviation value of wastewater before and after accommodated in PST also paired sample t-Test to see the performance of PST in equalizing of pH. Besides that, taken and measuring inlet wastewater pH in every one hour also adding to the previous wastewater inlet sample to determine the optimum wastewater detention time in terms of pH. Conclusion: PST was significant unit process that can be equalize the pH value. The observation of pH characteristic pattern by time showed that the optimum equalization time was 1-2 hours. This result can be as reference to more utilize of the existing PST.
ISO 14001:2015 and ISO 9001:2015 Implementation in Con-struction Company: Study Case: PT. Adhi Karya (Persero) Tbk, PT. Nusa Kon-struksi Enjiniring Tbk, Eiffage, and Acciona, S,A Rizka Dwi Apriliani; Yemima Marnalita Hasibuan; Filson Maratur Sidjabat
Jurnal Lingkungan dan Sumberdaya Alam (JURNALIS) Vol. 2 No. 2 (2019): Environmental
Publisher : Program Studi Teknik Lingkungan, Fakultas Teknik, Universitas Banten Jaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (607.15 KB)

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In this era of globalization, competition between producers is commonplace as well as companies in the construction sector that have developed a lot. This causes the quality of the products and services to be increasingly considered. Thus, construction company needs to get standardized recognition up to international standards stating that the products and systems used are worth buying. The international standard that is often used by various companies is ISO 14001: 2015, which states a commitment to save the environment, and ISO 9001: 2015 which states a commitment to increase customer satisfaction. The aim of this study is to know the implementation and achievement of these standards in construction companies. This study discusses implementation in 4 domestic and foreign companies as representative namely, PT. Adhi Karya (persero) Tbk, PT. Nusa Konstruksi Enjinirin, Tbk, Eiffage, and Acciona, S, A. The method used in this study is a qualitative research method based on the annual report of each company. The results of this study known that each company has its own strategy to achieve ISO 14001: 2015, in PT. Nusa Konstruksi Enjiniring Tbk (NKE) they do direct action in protecting the environment such as managing the waste produced, preventing pollution, also following the existing regulation. In PT. Adhi Karya, they more consider about the health and safety of the work place, prioritizing the use of eco-friendly and energy saving products, pollution prevention and natural resources. Acciona, S,A and Eiffage they more consider about the environmental protection norms it is common to build designated infrastructure to preserve the environment and treat the waste.
Co-Authors Filson Maratur Sidjabat Yemima Marnalita Hasibuan