Perencanaan Unit Daur Ulang Efluen Instalasi Pengolahan Air Limbah Petrokimia (Studi Kasus: PT. X)

Niza, Nadya Fitri (2023) Perencanaan Unit Daur Ulang Efluen Instalasi Pengolahan Air Limbah Petrokimia (Studi Kasus: PT. X). Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Peningkatan kebutuhan air yang tidak diiringi dengan suplai dan ketersediaan air baku yang cukup dapat menjadi kendala bagi pengembangan industri di masa depan. Daur ulang air limbah terolah harus dipertimbangkan sebagai sumber air baru. PT. X merupakan salah satu industri petrokimia yang berlokasi di Cilegon, memasok air baku sebesar 300 m³/jam untuk kegiatan industri dan menghasilkan efluen IPAL sebesar 45 m³/jam. Tujuan dari penelitian ini adalah untuk merencanakan pengolahan efluen IPAL untuk dapat digunakan kembali dalam kegiatan industri. Analisis kualitas air yakni pH, konduktivitas, ammonia, nitrat, nitrit, kekeruhan, TDS, TSS, COD, BOD, TOC, fosfat, serta minyak dan lemak, dipilih berdasarkan tingginya konsentrasi parameter tersebut di air limbah hasil dari penggunaan industri petrokimia, serta kemungkinan dalam mengganggu proses pemanfaatannya. Rancangan unit daur ulang efluen IPAL dapat menjadi alternatif solusi bagi pihak PT. X untuk memenuhi kebutuhan air, sekaligus mendapatkan keuntungan ekonomi dan manfaat lingkungan. Dari hasil pengukuran, parameter yang belum mencapai target penggunaan kembali adalah konduktivitas 6543,3 mg/L, ammonia 13,3 mg/L, kekeruhan 12,7 mg/L, TDS 3271,7 mg/L, TSS 16,3 mg/L, COD 127 mg/L, BOD 9 mg/L, TOC 30,95 mg/L, serta minyak dan lemak 7,2 mg/L. Berdasarkan efisiensi penyisihan parameter air, kebutuhan energi, biaya instalasi, biaya operasional dan pemeliharaan, direncanakan sistem daur ulang yang terdiri dari unit intake, unit adsorpsi dengan Granular Activated Carbon, Ion Exchange dengan resin kation H₂SO₄ dan resin anion NaOH, serta perpompaan dengan biaya konstruksi sebesar Rp 3.127.626.642, biaya operasional dan pemeliharaan sebesar Rp 475.282.345 per tahun, serta Net Present Value adalah Rp 21.283.710.841 dan balik modal dalam 2 tahun.
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An increase in water demand that is not accompanied by an adequate supply and availability of raw water may become an obstacle to industrial development in the future. Recycling of treated wastewater should be considered as a new water source. PT. X is one of the petrochemical industries located in Cilegon, supplying raw water of 300 m³/hour for industrial activities and producing WWTP effluent of 45 m³/hour. The purpose of this study is to plan the treatment of WWTP effluent to be reused in industrial activities. Water quality analysis, namely pH, conductivity, ammonia, nitrate, nitrite, turbidity, TDS, TSS, COD, BOD, TOC, phosphate, and oil and grease, was selected based on the high concentration of these parameters in wastewater resulting from the use of the petrochemical industry, as well as the possibility of interfering with the utilization process. The design of the WWTP effluent recycling unit can be an alternative solution for PT. X to meet water demand, while gaining economic benefits and environmental benefits. From the measurement results, the parameters that have not reached the reuse target are conductivity 6543,3 mg/L, ammonia 13.3 mg/L, turbidity 12,7 mg/L, TDS 3271,7 mg/L, TSS 16,3 mg/L, COD 127 mg/L, BOD 9 mg/L, TOC 30,95 mg/L, and oil and grease 7,2 mg/L. Based on the efficiency of water parameter removal, energy requirements, installation costs, operational and maintenance costs, a recycling system is planned consisting of an intake unit, an adsorption unit with Granular Activated Carbon, Ion Exchange with H₂SO₄ cation resin and NaOH anion resin, and pumping with an installation cost of Rp 3.127.626.642, operational and maintenance costs of Rp 475.282.345 per year, and a Net Present Value of Rp 21.283.710.841 and a return on capital in 2 years.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Daur ulang air, Air limbah petrokimia, Pengolahan air, Water Reuse, Petrochemical Wastewater, Water Treatment.
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:	Nadya Fitri Niza
Date Deposited:	03 Aug 2023 04:20
Last Modified:	03 Aug 2023 04:20
URI:	http://repository.its.ac.id/id/eprint/100343

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