Analisis Penurunan Parameter Pencemar Limbah Cair Laundry dengan Multi Soil Layering (MSL)

Abstract

Laundry wastewater is grey water, which is part of domestic wastewater, which is not through the toilet. Laundry wastewater contains COD, BOD, TSS, Total Phosphate, pH, MBAS which includes derivatives of organic substances so that the accumulation causes an increase in the organic content of water or groundwater. The purpose of this study was to observe the effects of the hydraulic loading rate (HLR) and permeable layer (zeolite and gravel) on the efficiency of decreasing laundry wastewater pollutants. Variations in HLR consist of 500 l / m2 day, 750 l / m2 day and 1000 l / m2 day. In this study, laundry wastewater was introduced gravitationally into the MSL reactor with dimensions of 15x50x50 cm. The MSL reactor consists of impermeable layers and permeable layers. The impermeable layer is a layer consisting of a mixture of soil and charcoal with a ratio of 2: 1, and a permeable layer consisting of layers of gravel (MSL 1) and zeolite (MSL 2) with a diameter of 0.25 - 0.5cm. Based on the results of the study, the HLR and permeable media have an effect on the decrease of laundry wastewater pollutant parameters. The highest decrease in pollutants for COD, BOD, TSS, Total Phosphate, pH, and MBAS parameters was obtained at HLR 1000 l/m2.d with the highest percentage reduction is 95% at MSL 1 and 92% at MSL 2. Decreasing pollutant concentration of laundry wastewater is higher in MSL 2 (permeable layer of zeolite) compared to MSL 1 (permeable layer of gravel).

Penggunaan Metode Multi Soil Layering (MSL) untuk Penyisihan Pencemar pada Limbah Cair Industri Pembekuan Ikan

“…Multi-soil layering (MSL), an excellent approach for treating residential wastewater, is utilized in this study. This waste treatment method uses soil as the main medium and improves the soil's performance by reducing the pollutant properties of liquid waste (Hadrah et al, 2019).…”

Reduction of COD, pH and Phosphate Levels in Laundry Wastewater Using Multi Soil Layering (MSL) Method

“…Pori-pori arang yang kecil dapat menyerap dan menghilangkan zat organik karena bidang adsorpsi semakin luas. Hal ini sejalan dengan penelitian (Hadrah et al, 2019), pada zona anaerob terjadi proses penyisihan COD yang menunjukkan keberadaan zat organik serta mereduksi senyawa fosfat dan senyawa organik lainnya (Ivontianti et al, 2022). Mikroorganisme yang ada dalam zona anaerob MSL, hidup dengan melakukan simbiosis mutualisme dan melakukan degradasi berantai oleh bakteri yang ada dalam MSL.…”

The Multi Soil layering Method for Wastewater Treatment: Review

“…The composition of the MSL reactor is palm fiber, iron, sawdust, activated charcoal that has been sifted with a size of 50 mesh, and volcanic soil with variations in HLR or flow rate of 250,500,1000 l/m2/day with anaerobic process conditions (Hadrah et al, 2019).…”

“…The BOD result was 98.8% in the Mount Nago irrigation water sample in the Pasar Baru area, Cupak Tengah Village, Pauh IX District, Padang. The composition of the MSL reactor is palm fiber, iron, sawdust, activated charcoal that has been sifted with a size of 50 mesh and volcanic soil and with variations in HLR or flow rate of 250,500,1000 l/m 2 /day with anaerobic process conditions (Hadrah et al, 2019).…”

“…Multi soil layering (MSL) is a method of treating wastewater that is effective and efficient, easy, and inexpensive without having to incur expensive costs (An et al, 2016;Latrach et al, 2014). Currently, the MSL method has been widely used as an alternative in wastewater treatment which has been proven to be effective in treating domestic wastewater and small industries (Hadrah et al, 2019;Sy et al, 2017;(Kasman et al, 2021).…”