Tingkat Pencemaran Organik Berdasarkan Konsentrasi Biological Oxygen Demand (Bod), Chemical Oxygen Demand (Cod), Dan Total Organic Matter (Tom) Di Sungai Bancaran, Kabupaten Bangkalan

Abstract

ABSTRAKAktivitas warga sekitar yang memanfaatkan Sungai Bancaran dan menjadikan sungai sebagai tempat pembuangan sampah atau limbah dapat menyebabkan terjadinya akumulasi bahan organik dalam perairan. Penelitian ini bertujuan untuk mengetahui konsentrasi BOD, COD, dan TOM serta menentukan tingkat pencemaran bahan organik di Sungai Bancaran. Penelitian ini menggunakan metode STORET. Prinsip dari metode STORET yaitu membandingkan antara data kualitas air yang diperoleh dengan baku mutu air yang disesuaikan dengan peruntukannya hal ini guna menentukan status mutu air. Baku mutu yang digunakan yaitu PP No. 82 Tahun 2001 dan PerMenKes No. 416 Tahun 1990. Hasil yang diperoleh lebar sungai berkisar 12,3-17,7 m cenderung meningkat kearah muara sungai, kedalaman berkisar 0,27-1,30 m, jenis substrat yaitu lumpur, kecepatan arus berkisar 0,07- 0,35 m/detik, kecerahan berkisar 20,7-87,3 cm, dan suhu berkisar 27,3- 32,2 °C. Parameter salinitas 0-6 ppt, oksigen terlarut berkisar 5,15-7,01 mg/l, pH berkisar 7,10-7,65 cenderung netral, BOD berkisar ,35-14,42 mg/l, COD berkisar 5,72-39,87, dan TOM 8,44-13,13 mg/l. Sedangkan untuk komposisi jenis fitoplankton terdiri dari kelas Bacillariophyceae, Cyanophyceae, Chlorophyceae, Dinophyceae, dan Euglenophyceae dengan kelimpahan fitoplankton berkisar 8133-13.733 sel/L. Tingkat pencemaran organik di Sungai Bancaran menggunakan metode STORET diketahui tercemar ringan (Kelas B) hingga tercemar sedang (Kelas C).Kata kunci: BOD, COD, TOM, bahan organik, STORETABSTRACTThe activities of local residents who use the Bancaran River and turn the river into a place for garbage or waste disposal can trigger an accumulation of organic matter in the waters. This study aims to determine the concentration of BOD, COD, and TOM and to determine the level of organic matter pollution in the Bancaran River. This study uses the STORET method. The principle of the STORET method is to compare the water quality data obtained with the water quality standards adjusted for this purpose in order to determine the water quality status. The quality standard is used on PP. 82 of 2001 and PerMenKes No. 416 of 1990. The results obtained that the width of the river ranges from 12.3-17.7 m which tends to increase towards the river mouth, the depth ranges from 0.27 to 1.30 m, the type of substrate is mud, the flow velocity ranges from 0.07 to 0.35 m / sec, brightness ranges from 20.7 to 87.3 cm, and temperatures range from 27.3 to 32.2 ° C. The salinity parameters were 0-6 ppt, dissolved oxygen ranged from 5.15 to 7.01 mg / l, pH ranged from 7.10 to 7.65 tended to be neutral, BOD ranged from 35-14.42 mg / l, COD ranged from 5.72 -39.87, and TOM 8.44-13.13 mg / l. Meanwhile, the composition of phytoplankton consists of classes Bacillariophyceae, Cyanophyceae, Chlorophyceae, Dinophyceae, and Euglenophyceae with an abundance of phytoplankton ranging from 8133-13,733 cells / L. The level of organic pollution in the Bancaran River using the STORET method is known to be lightly polluted (B Class) to moderate (C Class). Keywords: BOD, COD, TOM, organic matter, STORET

PENGARUH LUASAN PENUTUPAN WADAH REMEDIASI LIMBAH CAIR BUDIDAYA UDANG VANNAME (Litopenaeus vannamei)

“…Namun menurut Peraturan Menteri Kesehatan No. 416 Tahun 1990 dalam (Putri and Triajie 2021) konsentrasi TOM sebesar 10 mg/L. Menurut Supriyantini et.,al (2017) menyatakan tingginya nilai TOM dalam perairan akan menyebabkan rendahnya nilai oksigen terlarut.…”

Water Purification Using SPZ and SPA Filter Media to Improve the Water Quality of Sekar Lepen Keprabon River

“…(2019), which found that the measurement results of COD levels obtained increased on day 3 due to the influence of biological processes and the high organic matter from banana fronds which affected the increase in COD values. High organic matter or nutrients cause dissolved oxygen in the water to decrease, resulting in an increased COD concentration value (Putri, 2021). According to Kareliasari (2021), the COD value increases due to the high oxygen demand (O2) needed to decompose organic waste material, so the amount of organic waste material both dissolved and suspended in water will increase the TSS and TDS values.…”