Biochemical Oxygen Demand Level Modeling in Surabaya River using Approach of Cokriging Method

Suliyanto

2018

Abstract

National Coordinator of Indowater Community of Practice said that the Surabaya River contains high pollutants that cause pollution. One of the parameters for estimating pollution of Surabaya River is Biochemical Oxygen Demand (BOD). In addition to BOD there are other parameters that have a correlation with BOD, namely Chemical Oxygen Demand (COD). The kriging method is used to estimate the level of water pollution in a new location based on observational data around it using both parameters. The purpose of this research is to estimate BOD levels in three locations around the industry using the method of cokriging. Observation of 10 samples of BOD and COD showed significant correlation for α = 5% with a correlation value of 99.5% and P-value of 0.000. The result of cross-validation estimation of BOD level sampled using Gaussian model obtained high R2 value equal to 91.6% and Root Sum Squared (RSS) value is small, that is 0.7057 so it can be said that interpolation result accurate. The results showed that BOD levels leading downstream were lower. This is because the source of pollutants from the upstream of the river that leads to downstream of the river is less affected.

Paper Citation

in Harvard Style

Suliyanto. (2018). Biochemical Oxygen Demand Level Modeling in Surabaya River using Approach of Cokriging Method.In Proceedings of the International Conference on Mathematics and Islam - Volume 1: ICMIs, ISBN 978-989-758-407-7, pages 52-59. DOI: 10.5220/0008517100520059

in Bibtex Style

@conference{icmis18,
author={Suliyanto},
title={Biochemical Oxygen Demand Level Modeling in Surabaya River using Approach of Cokriging Method},
booktitle={Proceedings of the International Conference on Mathematics and Islam - Volume 1: ICMIs,},
year={2018},
pages={52-59},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0008517100520059},
isbn={978-989-758-407-7},
}

in EndNote Style

TY - CONF

JO - Proceedings of the International Conference on Mathematics and Islam - Volume 1: ICMIs,
TI - Biochemical Oxygen Demand Level Modeling in Surabaya River using Approach of Cokriging Method
SN - 978-989-758-407-7
AU - Suliyanto.
PY - 2018
SP - 52
EP - 59
DO - 10.5220/0008517100520059