Evaluation Of Water Quality At River Bian In Merauke Papua

Irba Djaja,H R Sunoko,P Purwanto,Hadiyanto Hadiyanto,Maryono Maryono,Sudarno Sudarno

doi:10.1051/e3sconf/20183108006

Abstract

River Bian in Merauke Regency has been utilized by local people in Papua (the Marind) who live along the river for fulfilling their daily needs, such as shower, cloth and dish washing, and even defecation, waste disposal, including domestic waste, as well as for ceremonial activities related to the locally traditional culture. Change in land use for other necessities and domestic activities of the local people have mounted pressures on the status of the River Bian, thus decreasing the quality of the river. This study had objectives to find out and to analyze river water quality and water quality status of the River Bian, and its compliance with water quality standards for ideal use. The study determined sample point by a purposive sampling method, taking the water samples with a grab method. The analysis of the water quality was performed by standard and pollution index methods. The study revealed that the water quality of River Bian, concerning BOD, at the station 3 had exceeded quality threshold. COD parameter for all stations had exceeded the quality threshold for class III. At three stations, there was a decreasing value due to increasing PI, as found at the stations 1, 2, and 3. In other words, River Bian had been lightly contaminated.

Highlights

Use River Bian is one of the rivers situated in Merauke Regency, Papua Province, which has been included within the Bikuma River Stream (DAS Bikuma)
Results of the Pollution Index informed the degree of the pollution suffered by River Bian by comparing it to the quality threshold by the water class as required by the Government Act 82/2001
The observation results of the physical parameters and the chemical parameters at each station were compared to the class III water quality threshold [5]

Summary

Introduction

Use River Bian is one of the rivers situated in Merauke Regency, Papua Province, which has been included within the Bikuma River Stream (DAS Bikuma). The change in land use by a deforestation nearby DAS Bian for investment activities, such as plantation and industrial forest, has mounted a pressure on the River Bian. This change in land use has led to the decrease of the river water quality. River is a very important ecosystem for human It provides water for many activities such as agriculture, industry, and domestic needs. This study had purposes to analyze the river water quality and to find out water quality status of the River Bian before the change in land use from forestry to industrial (HTI) and its compliance with the water quality threshold as required

Research method

Results and discussion

Phosphate

Nitrate

Analysis of water quality status of River Bian