MODEL PENYEBARAN SENYAWA NITROGEN AKIBAT LIMBAH DOMESTIK DI PERAIRAN PANTAI BANJIR KANAL TIMUR SEMARANG

Sugianto, Denny Nugroho (2003) MODEL PENYEBARAN SENYAWA NITROGEN AKIBAT LIMBAH DOMESTIK DI PERAIRAN PANTAI BANJIR KANAL TIMUR SEMARANG. Documentation. UNIVERSITAS DIPONEGORO.

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Abstract

Diantara beberapa zat yang dapat membahayakan apabila terkandung dalam konsentrasi yang berlebih adalah senyawa nitrogen. Siklus alami nitrogen tersebut dapat terganggu akibat aktivitas manusia yang menghasilkan senyawa tersebut dalam jumlah besar, seperti akibat limbah domestik. Oleh karena itu dibutuhkan suatu pendekatan yang dapat membantu memberikan informasi pola penyebaran senyawa-senyawa nitrogen tersebut melalui pendekatan model. Model ini dibangun dad persamaan transpor 2 dimensi horisontal dengan metode Quickest yang penerapannya digabungkan dengan model hidrodinamika dengan metode semi-implicit 2 langkah yang telah dikembangkan oleh Laboratorium Oseanografi Departemen Geofisika dan Meteorologi ITB. Rata-rata kesalahan relatif untuk seluruh parameter yang dikaji sebesar 34,71 %, sedangkan untuk masing-masing konsentrasi yaitu Nitrogen Organik 59,35 - 60,89 %, Ammonium (NH4) 49,15 - 50,52 %, Nitrit (NO2) 29,08 - 29,70 %, dan Nitrat (NO3) 23,97 - 24,44 %. Konsentrasi maksimum berada di sekitar sumber muara sungai dan konsentrasi minimum di !spas pantai. Keseluruhan konsentrasi tersebut masih di bawah baku mutu dan tidak menimbulkan masalah lingkungan seperti eutrofikasi. Kate Kunci : model, nitrogen, pantai, semarang Abstract Between these constituents which might dangerous if exist in excessive concentration is nitrogen compound. The nitrogen natural cycle can be disturbed as a result of human activities which produce large amount of this compound, like domestic wastes. Because of that, it is needed an approach that able to the information of the pattern dispersion of these compounds in coastal waters by using Model. The model was built from horizontal 2-dimension transport equation using Quickest method in which its application was combined with 2 step semi implicit method for hydrodynamic model, which had already been developed by Oceanography Laboratory Dept. of Geophysics and Meteorology ITB. The value of mean relative errors for all the observed nutrient parameters from several scenarios are 34.71%, while fcir each of the concentrations resulted in 59.35 - 60.89 % for organic nitrogen. Ammonium (NH4) 49.15— 50.52 %, Nitrite (NO2) 29.08 — 29.70 %, and Nitrate (NO3) 23.97 — 24.44. The maximum concentration existed around the source of the end of the river, and the minimum concentration existed away from the coastal area. Generally, those concentrations are still below the limit value and do not cause the environmental problem such as eutrofication.

Item Type:Monograph (Documentation)
Subjects:G Geography. Anthropology. Recreation > GE Environmental Sciences
Divisions:Faculty of Fisheries and Marine Sciences > Department of Marine Science
ID Code:23036
Deposited By:Mr UPT Perpus 2
Deposited On:13 Oct 2010 11:49
Last Modified:13 Oct 2010 11:49

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