Physical-chemical quality analysis of Serayu River water, Banjarnegara, Indonesia in different seasons

Abstract

This article discusses the analysis of the physico-chemical parameters of water in the Serayu River, Banjarnegara, Indonesia during the dry and rainy seasons. The parameters to be measured are heavy metals, alkalinity, pH, temperature, TDS, TSS, and corrosivity. The sampling location is at the mouth of the Serayu River, where Serayu River water is one of the Mrica Reservoir water sources used for hydroelectric power plants. (PLTA). When the samples were taken in the rainy and dry season in 2018. The results showed that in the rainy season, the surface water pH of the Serayu River estuary was 6.61; the TDS was 178 mg/l; the TSS was 62 mg/l; the BOD was 6.66 mg/l; the COD was 33.31 mg/l; and the nitrate was 4.03 mg/l. Meanwhile, in the dry season, the pH was 8.15; the TDS wa 121 mg/l; the TSS was 55 mg/l; the BOD was 6.35 mg/l; the COD was 31.77 mg/l, and the nitrate was 3.08 mg/l. All physical and chemical parameters meet the quality standards required in Indonesian Government Regulation No. 82 of 2001 concerning Management of Water Quality and Class III Water Pollution Control. The surface water of the Serayu River estuary is weak corrosive which means it is safe for hydropower activities. In general, in the rainy season the chemical physics parameters of the Serayu River estuary water level are higher than the rainy season.

Groundwater Quality Analysis Based on Physical Properties of The Gunungtiga and Surrounding Areas

“…The temperature in the research area shows that 6 observation locations are above the standard quality; The temperature value is related to the depth of the groundwater level and is directly proportional; The deeper the groundwater level, the higher the temperature as presented in Figure 3. Temperature also play an important role in chemical reaction that was done in the water (Cai et al, 2018;Purwono et al, 2019). In the study area, there are several anomalous points where temperature is inversely proportional to depth (22/DP/07, 22/DP/08, 22/DP/10, and 22/DP/14); this is suspected to be caused by land cover factors, the more vegetation that covers the land, the lower the land surface temperature will be.…”

Hematological Profile of Bader Fish (Barbonymus altus) in the Brantas River, Blitar Region in Measurement of River Water Quality

“…The season affects the TDS value. The TDS value will rise during the wet season and fall during the dry season (Purwono et al, 2019). This occurs by organic and colloidal substances that enter streams during the rainy season (Effendi, 2003).…”

Determinasi Status Mutu Air Daerah Aliran Sungai (Das) Serayu Menuju Pengelolaan Das Berkelanjutan

“…Peningkatan aktivitas dan pemanfaatan aliran Sungai Serayu yang berlebihan dapat menyebabkan perubahan kualitas air (Arinda et al, 2023). Hal tersebut dapat terjadi karena pemanfaatan lahan menjadi pertanian dan pemukiman (Susanti et al, 2020) serta masuknya limbah ataupun senyawa toksik dari aktivitas antropogenik ke aliran sungai (Purwono et al, 2019;Triwuri et al, 2018). Penurunan kualitas perairan dapat menimbulkan berbagai efek negatif pada daya guna, hasil guna, produktivitas, daya dukung dan daya tampung dari sumberdaya air yang pada akhirnya akan menurunkan kekayaan sumberdaya alam (Syamiazi et al, 2015).…”