Nieke Karnaningroem
Departement of Environmental Engineering, Sepuluh Nopember Institute of Tecnology, Jl. Raya ITS Keputih Sukolilo, Surabaya 60111

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Studi Efisiensi Sistem Prasedimentasi dan Subsurface Flow Wetland dalam Menurunkan Kadar Kekeruhan, Zat Organik, Nitrat, Fosfat, dan Total Coli

Jurnal Teknik ITS Vol 2, No 3 (2013)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat (LPPM), ITS

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Abstract

Terdapat beberapa kandungan dalam air seperti kekeruhan, zat organik, nitrat, fosfat, dan total coli. Kandungan-kandungan tersebut dijadikan parameter dalam menentukan kualitas air. Tujuan penelitian ini adalah mengkaji efektifitas penurunan kadar kekeruhan, nitrat, fosfat, zat organik, dan total coli pada Sungai Jagir di sekitar Taman Boezem Wonorejo. Penelitian ini dilakukan dengan menggunakan sistem Prasedimentasi dan Subsurface Flow Wetland dengan variasi umur tanaman mangrove dan ukuran media pada wetland. Umur mangrove yang digunakan adalah 3 bulan dan 6 bulan. Sedangkan ukuran media yang digunakan adalah 16-32 mesh dan 32-50 mesh. Penilitian ini dilaksanakan selama dua minggu. Dari hasil penelitian didapatkan penurunan paling optimum sebagai berikut, kekeruhan sebesar 99,6%, sebesar 46,07% pada zat organik, sebesar 69,8% pada Nitrat, sebesar 76,19% pada Fosfat, dan pada Total coli sebesar 99,2%. Penurunan kadar tersebut disebabkan adanya proses filtrasi yang terjadi pada media pasir, dan juga adanya proses penyerapan nutrien yang dilakukan oleh tanaman mangrove itu sendiri.

Studi Efisiensi Sistem Prasedimentasi dan Free Water Surface Wetland dalam Menurunkan Kadar Nitrat, Fosfat, Kekeruhan, Zat Organik dan Total Coli

Jurnal Teknik ITS Vol 2, No 3 (2013)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat (LPPM), ITS

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Abstract

Boezem Wonorejo saat ini telah dikembangkan menjadi tempat wisata yaitu Ekowisata Mangrove. Sampai saat ini pihak pengelola boezem masih kesulitan dalam penyediaan air bersihnya Sungai Jagir yang mengalir di sekitar wilayah Ekowisata tersebut merupakan sumber air permukaan yang berpotensi sebagai pemenuhan kebutuhan tersebut secara kuantitatif. Agar dapat terpenuhi secara kualitatif, maka Perlu dilakukan penelitian awal untuk mengetahui efisiensi penurunan kadar Nitrat, Fosfat, Zat Organik, Kekeruhan maupun Total Coli. Dalam penelitian ini akan digunakan rangkaian suatu sistem pengolahan Prasedimentasi dan Free Water Surface wetland skala laboratoium, Dengan variabel ukuran media pasir (16-32 mesh dan lolos 32 mesh) dan umur mangrove (3 bulan dan 6 bulan) yang akan di analisis di laboratorium Teknik Lingkungan ITS.  Dari hasil analisis didapat removal maksimum  untuk kekeruhan pada prasedimentasi 46,5%, sedangkan pada wetland yaitu pada media pasir mesh 16-32 dan mangrove 6 bulan yaitu 94,8%. Presentase maksimum removal nitrat pada prasedimentasi yaitu 17,8%, removal maksimum pada wetland dengan mangrove 6 bulan dan media pasir lolos 32 mesh yaitu 53,6%. Pada mangrove sendiri removal makismum terdapat pada umur 6 bulan dengan besar removal 36,5%. Removal maksimum fosfat terbesar pada prasedimentasi yaitu 64,3%, untuk Reaktor Wetland yaitu pada wetland dengan mangrove 6 bulan dan media pasir lolos mesh 32 sebesar 90,5%. Untuk . Mangrovenya sendiri mampu meremoval maksimum pada umur 6 bulan dengan besar 53,8%. Presentase removal maksimum zat organik pada prasedimentasi sebesar 35,7%, pada reaktor wetland sebesar 21,8% dengan ukuran media pasir mesh 16-32 dan umur mangrove 3 bulan.

A Comparative Study of Water Quality Characteristics at East Java River

IPTEK The Journal for Technology and Science Vol 21, No 4 (2010)
Publisher : Institut Teknologi Sepuluh Nopember

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Abstract

Water is the natural resources have the function of very importance for human life and also as authorized capital in development. Water will influence by the other component. Exploiting of water to support all human life must done with wise action to management so that not result damage at water resource. As place relocation of water hence river have the selected capacities that able to change because natural activity and antropogenik. This research was conducted in nine major rivers in East Java. The objectives of this study were: 1) Identifying the characteristics and concestration range of water quality parameter, 2) Comparison the level of pollution in rivers in East Java. The results of this study indicated that the characteristic of water quality parameter of rivers in East Java were generally physical, chemical and biological. The comparison result of water quality parameter basically showed that in general the pH was still under threshold that had been determined, that was pH from 6 to 9. In general, DO concentration ranged from 0.5 mg/l to 7 mg/l, BOD concentration ranged from 3 mg/l to 11 mg/l and the COD concentration ranged between 0.5 mg/liter to 35 mg/l.

Analisis Daya Tampung Beban Pencemaran Kali PelayaranKabupaten Sidoarjo Dengan Metode Qual2kw

Jurnal Teknik ITS Vol 3, No 1 (2014)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat (LPPM), ITS

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Abstract

Pencemaran Kali Pelayaran berasal dari limbah domestik, limbah industri dan persawahan di sekitar bantaran sungai. Penelitian ini adalah untuk mengaplikasikan dan mengevaluasi dengan metode Qual2kw dengan menggunakan 4 simulasi skenario kualitas air, serta menghitung daya tampung beban pencemaran Kali Pelayaran. Sedangkan parameter yang di uji meliputi DO, BOD, COD, TSS, Fosfat (PO4 3-), Nitrat (NO3) dan Amonium (NH4). Wilayah studi dimulai dari hulu hingga depan IPA Taman Tirta sepanjang 21 km.Berdasarkan perhitungan daya tampung beban pencemaran maka didapatkan daya tampung maksimumdan daya tampung minimumpada tiap segmen.Hasil dari aplikasi dan evaluasi dengan Qual2kw pada Kali Pelayaran dalam kondisi telah tercemar.

Evaluation Of Communal Wastewater Treatment Plant Operating Anaerobic Baffled Reactor And Biofilter

Waste Technology Vol 4, No 1 (2016)
Publisher : Diponegoro University

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Abstract

Construction of communal Waste Water Treatment Plant, WWTP in city of Malang since 1998 but until recently had never done an evaluation the performance. Communal WWTP performance evaluation is needed to see how far the efficiency of processing result. Until now, Environmental Agency Malang City only measure effluent from WWTP Communal  to know the suitability  with domestic wastewater quality standards. Effluent quality data in 2014 showed value above the quality standard of domestic wastewater from East Java Governor Regulation No. 72 in 2013 for parameters BOD and COD. WWTP Communal USRI research objects are on a six (6) locations by involving the user community during the planning, construction, operation and maintenance. Technology choice of ABR followed by a biofilter reactor with the stone media proved capable of processing organic matter of BOD and COD with the removal levels respectively by 78% -99% and 71% -99%. As for the parameters of TSS, NO3 and PO4 have the ranges of removal respectively by 56% -100%, (43%) - 72%, (2%) - 13%. Ratio BOD and COD in influent are low and ranged from 0.22 to 0.41. From the evaluation shows that high organic matter concentrations in influent along with the HRT and operation time high will result in a higher removal level

Evaluasi IPAL Komunal Pada Kelurahan Tlogomas, Kecamatan Lowokwaru Kota Malang

Purifikasi Vol 17 No 1 (2017): Jurnal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Environmental and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

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Abstract

Perda Kota Malang nomor 17 tahun 2001 tentang Konservasi Air, bahwa segala jenis kegiatan yang menimbulkan limbah harus memiliki instalasi pengolahan air limbah. Kebijakan tersebut sedang diterapkan oleh pemerintah Kota Malang dengan melakukan pembangunan IPAL Komunal. Pada penelitian ini dilakukan evaluasi pembangunan terhadap IPAL Komunal yang berlokasi di Kelurahan Tlogomas, Kecamatan Lowokwaru, Kota Malang. Berdasarkan review IPAL Komunal yang dilakukan oleh DEWATS, ternyata mayoritas IPAL Komunal yang dibangun tidak dimonitoring, sehingga perlu dilakukan evaluasi terhadap aspek teknis untuk mendapatkan kesesuaian perencanaan dengan kriteria desain serta tingkat efektivitas dari IPAL Komunal dengan menggunakan Metoda Comprehensive Performance Evaluation. Evaluasi terhadap aspek lingkungan dari dampak operasional IPAL Komunal juga dilakukan dengan metoda  perbandingan baku mutu. Berdasarkan hasil evaluasi aspek teknis didapatkan penyisihan efisiensi, rasio BOD/COD, OLR dan HRT sudah memenuhi kriteria desain tetapi tidak sesuai dengan hasil perhitungan rasio BOD/COD, OLR, dan HRT, Pada perhitungan perencanaan dengan realisasi pembangunan dan pengoperasian, sedangkan aspek lingkungan, hasil efluen BOD, COD, dan TSS masih belum memenuhi baku mutu yang dipersyaratkan oleh Kota Malang.

MODELING MATEMATIK ALIRAN DI SUNGAI DENGAN METODE BEDA HINGGA

Purifikasi Vol 6 No 1 (2005): Jurnal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Environmental and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

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Abstract

One way to identify the direction of dispersion pollutant in river and obtains result of research coming near in fact is by using mathematic model. Study from the model was finished by applying finite difference method, what in this case using the Leap frog finite difference method explicit. This is because the method is relatively easy to handle. To make the mathematic model structure besides applying finite difference method, basics law of stream hydrodynamics in river is also required which are equation of continuity and equation of motion or momentum. Without those two equations, scheme of Leap frog cannot be made. As numeric solution, to reach the success of mathematic modeling of flow in river by using the Leap frog finite difference method explicit, it also depends on ratio from scheme of time and space. In this case means the study of numeric stability from model have to be fulfilled by its conditions.

Study of Remu River Water Quality Using Dynamic Program

IPTEK The Journal for Technology and Science Vol 30, No 1 (2019)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

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Abstract

Remu River has been being a water resource for residents in Sorong City. Development in this city lead to water quality degradation of Remu River. Existing (2016) and prediction condition of Remu River in the next 2 years were defined by the behavior of BOD, COD, Fe, and DO that proceed using a dynamic program, STELLA 9.1.3. Study area involved 6 sampling points. Simulation results showed that BOD, COD, and Fe concentrations tend to increase in the next 2 years, even BOD and COD concentrations at several sampling points was higher than water quality standard, according to Government Regulation No. 82/2001. Meanwhile, DO concentration was below the limit in 4th to 6th sampling points. Pollution control strategy was conducted by setting up three scenarios: (1) procurement of Waste Water Treatment Plant (WWTP), (2) river sediment dredging, and (3) combination of both scenario. Combination of sediment dredging and procurement of WWTP scenario estimated to reduce BOD concentration to 89.82%, COD concentration to 87.02%, and increase DO concentration to 19.07%. So that, the 3rd scenario was determined as the best strategy to improve Remu River water quality, although Fe concentration cannot be controlled as it comes from nature.