Jurnal Ecocentrism

Status Mutu Air Sungai Petanu Berdasarkan Perhitungan Metode Storet

I Made Sastra Wibawa, Ni Luh Putu Mahendra Dewi, Simeon Petrus Tallo — Mon, 26 Feb 2024 00:00:00 +0800

The Petanu River is one of the rivers in Gianyar Regency. The use of the Petanu river is for irrigation of rice fields, holy places, waterfall tourism, as the main function of domestic lime disposal and there is illegal sandstone mining in several Petanu river basins. The Petanu River is also used for the community's basic needs, namely bathing, washing and toilets. Based on these activities, it will certainly affect the water quality of the Petanu river. Based on storet method calculations, the Petanu river experiences moderate pollution. This was influenced by the phosphate parameter at the monitoring location in the middle of the Petanu River which exceeded the class II water quality standard with a concentration of 0.3 mL. The fecal coliform parameters were found in the middle monitoring location with a concentration of 2,400 MPN/100 mL, the downstream monitoring location was 1,500 MPN/100 mL which exceeded the threshold for class II water quality standards.

Teknologi Pengelolaan Sampah Organik Menggunakan Larva Black Soldier FLY Di TPS3R Kesiman Kertalangu Denpasar Bali

I Made Sastra Wibawa, Shinta Enggar Maharani, Hermes Henryanto Nambung — Mon, 26 Feb 2024 00:00:00 +0800

Bali is a region that produces a lot of waste, reaching 4,281 tons in one day, whereas if calculated over one year, there will be as much as 52% of waste that is not managed properly. In 2022 to 2023, the total waste generation entering TPS3R Kesiman Kertalangu Denpasar is 6,039 Kg/day, consisting of organic waste of 1,569 Kg/day, and the remainder is residual waste which is disposed of in the landfill with waste generation of 4,470 Kg/day . The percentage of residual waste disposal from TPS3R Kesiman Kertalangu to TPA is 74%. This research uses experiments, which aim to: 1) find out research instrument techniques that reduce organic waste more quickly and 2) find out the BSF waste from the type of organic waste that is most in accordance with SNI Kompos 19-7030-2004. The research used two research instrument techniques, namely the Tray Instrument Technique and the Barrel Instrument Technique. The results of the research show: 1) the waste management technique using BSF larvae that reduces waste the fastest is in Instrument Tray 3 which contains 2000 grams of organic food waste which is reduced by 100 grams of BSF larvae for 16 days so that it weighs 1597 grams, and 2) BSF Kasgot that meets SNI Compost 19-7030-2004 is a waste management technique that uses Tray 3 Instruments, which has a water content of 19.040%, C-Organic 13.910%, Ph 6.970%, and N 0.980%.

ANALISIS KARAKTERISTIK SAMPAH DALAM MENENTUKAN OPTIMALISASI KINERJA PENCACAHAN DI TPS 3R KESIMAN KERTALANGU

I Made Sastra Wibawa, Shinta Enggar Maharani, I Nyoman Waisnawa Budiswara — Mon, 26 Feb 2024 00:00:00 +0800

The increasing population causes an increase in the amount, variety and characteristics of waste. Good waste processing and management is needed to deal with waste problems. TPS 3R Kesiman Kertalangu is an independent waste processing site in Kesiman Kertalangu Village. There is mixed and residual waste entering TPS 3R Kesiman Kertalangu. In processing the waste into compost, the waste is first sorted and shredded. In this research, several experiments were carried out to determine the maximum sorting and shredding speed. The water content of the waste studied included: 25%, 50%, 75%. The research method used is the experimental method. Determining the water content of waste is done first by observing the daily weather to obtain the desired water content. Apart from that, there is a wash out of sorting personnel in sorting waste to get accurate data, so that there is no carry over effect. Measuring shredding speed uses the SNI 7580:2010 approach as a reference that is close to the basis of research. Based on research results, waste water content of 25% is the maximum waste for sorting. Apart from that, waste with a water content of 25% is also the waste that is shredded the fastest.

LIMBAH LUMPUR INDUSTRI PENGOLAHAN BAJA SEBAGAI PENGGANTI PARSIAL PASIR UNTUK BAHAN BANGUNAN

I Gede Oka Darmayasa, I Kadek Widiantara — Mon, 26 Feb 2024 00:00:00 +0800

This research involves the binding/solidification of sludge waste from the steel processing industry originating from a steel industry in West Java, namely sludge waste from the waste processing process of the iron sponge production unit (direct reduction plant) and the wire rod mill production unit using cement as the binding material in the concrete mixture. The binding of sludge waste is carried out on a laboratory scale with mixture proportions of 0, 10, 20, 30, and 40% sludge waste substitution for fine aggregate/sand. Laboratory tests on the mixture include compressive strength, elastic modulus and Poisson ratio, concrete density, permeability, environmental resistance, and leaching tests with TCLP (toxicity characteristic leaching procedure). Heavy metal leaching tests for Pb, Cd, and Zn have the highest values at a 40% mixture proportion, which are 0.065 mg/ltd, 0.234 mg/lt, values below the quality standard limits for these heavy metals, which are 5.0 mg/lt, 1.0 mg/ltd, and 50 mg/lt, respectively. Environmental resistance tests indicate that the mixture has sufficient resistance after testing through 13 cycles, with the highest weight loss in the mixture sample being 13.97%, a value below the established quality standard where the maximum weight loss is 30%.