Perencanaan District Meter Area (DMA) Kartasura Perumda Air Minum Tirta Makmur Kabupaten Sukoharjo

Witanti, Ike (2023) Perencanaan District Meter Area (DMA) Kartasura Perumda Air Minum Tirta Makmur Kabupaten Sukoharjo. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Tingkat kehilangan air Perumda Air Minum Tirta Makmur Kabupaten Sukoharjo tahun 2020 mencapai 35,1% mengakibatkan potensi kehilangan pendapatan sebesar Rp 19 milyar/tahun. Neraca air 2021 menunjukkan penyebab NRW tertinggi adalah kehilangan air fisik 28,3%, disusul komponen lain yaitu ketidakakuratan meter dan penanganan data 5,4%, konsumsi tak resmi 0,35%, serta konsumsi resmi tak bermeter tak berekening 0,68%. Wilayah pelayanan Kartasura berkontribusi 27% terhadap kehilangan air Perumda atau 50% terhadap wilayah pelayanan tersebut. Nilai tersebut melebihi standar nasional NRW 25%. Strategi pengendalian yang telah diterapkan masih bersifat pasif. Tahun 2022 terdapat program penyekatan antar wilayah pelayanan yang mengubah jumlah pelayanan dari 7 menjadi 14 wilayah pelayanan. Wilayah pelayanan Kartasura yang terisolasi sempurna dapat dilakukan perencanaan DMA untuk pengendalian kehilangan air fisik. Kajian dilakukan dengan menganalisis pengembangan subzona wilayah pelayanan eksisting yang dibagi berdasar jalur distribusi pembagi (JDP) dan jumlah SR. Pengembangan wilayah pelayanan dilakukan dengan analisa hidrolis terhadap skema pelayanan eksisting yaitu menggunakan dua SPAM untuk 1 wilayah pelayanan serta skema alternatif dua SPAM untuk dua wilayah pelayanan. Skema pelayanan yang optimal memenuhi kriteria sistem distribusi menjadi dasar perencanaan DMA. Perencanaan DMA dilakukan dengan meninjau subzona yang dapat dijadikan DMA sesuai krteria jumlah SR, jumlah katup, jumlah inlet, variasi elevasi. DMA prioritas ditentukan berdasar kemudahan awal pembentukan serta riwayat pengaduan kebocoran tertinggi. Hasil perencanaan teknis kemudian dianalisis secara finansial dan sosial terkait pelayanan guna mendapatkan kesimpulan kelayakan rekomendasi strategi. Zona Kartasura menjadi zona prioritas yang direncanakan pengendalian kehilangan air melalui perencanaan DMA. Analisis hidrolis kesiapan zona menunjukkan bahwa skema pelayanan eksisting yaitu 2 reservoir melayani 1 zona lebih mampu melayani seluruh wilayah dilihat dari tekanan tidak terlalu besar mendekati batas maksimal, jumlah node yang memenuhi standar tekanan lebih banyak, ruas pipa yang memenuhi standar unit headloss lebih banyak, serta masih dapat menggunakan setting pompa eksisting. Tujuh DMA yang direncanakan memiliki urutan prioritas pembentukan DMA dari DMA 9, DMA 6 & 7, DMA 3, DMA 8, DMA 1, DMA 2, dan DMA 10 & 5. Perencanaan pengendalian kehilangan air fisik melalui perencanaan DMA memerlukan biaya sebesar Rp 1.986.603.233. Biaya manfaat yang diperoleh adalah tambahan pendapatan sebesar Rp 1.571.230.005,12/tahun, tambahan profit sebesar Rp 175.210.184,37/tahun, potensi penambahan SR sebesar 1.462 SR, dan tambahan pendapatan non air dari pemasangan SR sebesar Rp 1.462.000.000. Pendanaan mandiri pada tahun ke 15 menunjukkan NPV sebesar Rp 9.697.197.777, BCR sebesar 5,88, PP 6 tahun 4 bulan, dan IRR 10,90%. Sementara pendanaan melalui pinjaman Bank menunjukkan NPV sebesar Rp 10.288.059.111, BCR sebesar 6,18, PP 6 tahun 3,96 bulan, dan IRR 12,35%. Potensi insentif dana hibah program HAMBK sebesar Rp 2.343.273.765,12 per tahun. Potensi peningkatan SPM wilayah pelayanan Kartasura naik sebesar 3,8% menjadi 16,5%, sementara SPM Kab. Sukoharjo naik sebesar 0,5% menjadi 12,5%. Potensi penurunan aduan sebesar 46% menjadi 196 aduan.
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The water losses level of Perumda Air Minum Tirta Makmur Kabupaten Sukoharjo in 2020 is 35.1% It has caused potential income losses of around 19 billion rupiahs/year. The 2021 water balance shows that the cause of the highest NRW is 28.3% physical water loss, followed by other components, namely meter inaccuracy and 5.4% data handling, 0.35% illegal consumption, and 0.68% unbilled consumption. The Kartasura service area contributes 27% to Perumda's water loss or 50% of the service area. This value exceeds the national standard of NRW 25%. The control strategy that has been implemented is still passive. In 2022, there will be a program of partitioning between service areas that changes the number of services from 7 to 14 service areas. The Kartasura service area which is perfectly isolated can be planned for DMA to control physical water loss Research was carried out by analyzing the development of the existing service area and the condition of the subzone. The development of service areas is carried out by hydraulic analysis of the existing service scheme, namely using two SPAM for one service area and an alternative scheme of two SPAM for two service areas. The optimal service scheme meets the distribution system criteria as the basis for DMA planning. DMA designed by dividing the service area into several subzones based on the distribution line of the divider (JDP) and the number of SRs. The sub-zone with the ease of initial formation and the highest leakage complaint history (in addition to the criteria for establishing other DMAs) was developed as a priority DMA establishment. The results of the technical planning are then analyzed financially and socially related to services in order to conclude the feasibility of strategic recommendations. The Kartasura zone is a priority zone that we want to control air loss through DMA planning. The hydraulic analysis of zone readiness shows that the existing service scheme, namely 2 reservoirs serving 1 zone, is more capable of serving the entire area, seen from the not too large pressure approaching the maximum limit, the number of nodes that meet more pressure standards, pipe sections that meet more headloss standards, and still can use the existing pump settings. The seven planned DMAs have a priority order of DMA formation from DMA 9, DMA 6 & 7, DMA 3, DMA 8, DMA 1, DMA 2, dan DMA 10 & 5. Planning to control physical water loss through DMA planning costs Rp 1,986,603,233. The benefit costs obtained are additional income of IDR 1,571,230,005.12/year, additional profit of IDR 175,210,184.37/year, potential additional SR of 1,462 SR, and additional non-water income from installing SR of IDR 1,462,000,000. Independent funding in the 15th year shows an NPV of IDR 9,697,197,777, a BCR of 5,88, a PP of 6 years and 4 months, and an IRR of 10.90%. While funding through bank loans shows an NPV of IDR 10,288,059,111, a BCR of 6.18, a PP of 6 years and 3,96 months, and an IRR of 12.35%. The potential incentive for grants for the HAMBK program is IDR 2,343,273,765.12 per year. The potential for an increase in SPM for the Kartasura service area increased by 3.8% to 16.5%, while the SPM for Kab. Sukoharjo rose by 0.5% to 12.5%. The potential for a decrease in complaints is 46% to 196 complaints

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	Kata kunci : DMA, jaringan distribusi, kehilangan air, Kartasura, Perumda Air Minum Keywords: DMA, distribution system, water losses, design, Perumda Air Minum
Subjects:	T Technology > TD Environmental technology. Sanitary engineering > TD481 Water distribution systems
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Environmental Engineering > 25101-(S2) Master Thesis
Depositing User:	Witanti Ike
Date Deposited:	19 Jan 2023 06:33
Last Modified:	19 Jan 2023 06:33
URI:	http://repository.its.ac.id/id/eprint/95487

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