Purifying Pollutant Indicators in Tofu Factory Wastewater Using a Multi Soil Layering System

Aflizar, Aflizar and Mayyuliani, Rini and Jamaluddin, Jamaluddin and Amrizal, Amrizal (2023) Purifying Pollutant Indicators in Tofu Factory Wastewater Using a Multi Soil Layering System. In: AIP Conference Proceedings. AIPPublishing.

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Abstract

.The MSL system used during this experiment was made in a field laboratory scale with dimensions (height 200 cm x width 50 cm x length 50 cm). The main component of the MSL system consists of a mixed soil layer (SML) arranged in a triangular soil horizon pattern and surrounded by a Split Rock layer as a permeable layer (SSP).SML is made from local natural resources, namely sandy clay loam, sawdust from coconut stalks (Cocos nucifera) and iron pellets from lathe waste with a dry weight ratio of 8 : 1.9 : 0.1. The Tofu factory wastewater is channeled into the MSL system with a hydraulic loading rate (HLR) of 3166 L/m2 /hour utilizing the force of gravity.Average removal efficiency of Total Suspended Solids (TSS), Biochemical Oxygen Demand (BOD5), Chemical Oxygen Demand (COD), Nitrate-Nitrogen (NO3 - -N), Phosphorus (PO4 - -P), Oils and grease , Electric Conductivity (EC), Total Dissolved Solid (TDS) and Salt (NaCl) were 67, 97, 97, 99, 77, 99, 78, 64 and 81%, respectively.The bad odor and color indicators of wastewater can also be efficiently removed with the MSL system.From this fact, the MSL system is efficient and capable of removing organic matter, phosphorus, nitrogen, oil and grease, odor and color.MSL system recommended for removing contaminants from Tofu Factory wastewater.

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