Darda Ibrahim, Neni Damajanti

Penurunan Kandungan Chemical Oxigen Demand (COD) dan Total Suspended Solid (TSS) Limbah Cair Industri Soun Menggunakan Proses Koagulasi-Flokulasi

Introduction

Penurunan kandungan chemical oxigen demand (cod) dan total suspended solid (tss) limbah cair industri soun menggunakan proses koagulasi-flokulasi. Pelajari penurunan COD & TSS limbah cair industri soun menggunakan proses koagulasi-flokulasi. Temukan pengaruh dosis kitosan, kecepatan pencampuran, dan waktu pengendapan untuk optimasi pengolahan limbah yang efisien.

Abstract

Vermicelli industry is one of the food industries that produces wastewater containing high levels of organic matter and suspended solids, as indicated by elevated Chemical Oxygen Demand (COD) and Total Suspended Solids (TSS) values. These pollutants pose a risk to the environment if not properly treated. One of the methods that can be applied to reduce pollutant levels is the coagulation-flocculation process. This study aims to examine the effects of various coagulation-flocculation process variables on the reduction of COD and TSS in vermicelli industry wastewater and to determine the most influential factors affecting the removal efficiency of both parameters. The treatment process was carried out using the coagulation-flocculation method, with a full factorial design experiment involving four main independent variables at two levels (high and low): coagulant dose (100, 300 mg/L), rapid mixing speed (100, 300 rpm), flocculation speed (10, 30 rpm), and settling time (30, 50 minutes). The analysis results indicated that chitosan dose and settling time were the most influential variables in reducing COD levels, while settling time had the greatest impact on TSS reduction. These findings demonstrate that the effectiveness of the coagulation-flocculation process is highly dependent on proper adjustment of process parameters, making the selection of optimal operating conditions essential for efficient wastewater treatment in the vermicelli industry. Furthermore, this process highlights the potential of chitosan as an environmentally friendly coagulant for treating food industry wastewater.

Review

This study addresses a highly relevant environmental concern: the treatment of wastewater generated by the vermicelli industry, which is typically characterized by elevated levels of Chemical Oxygen Demand (COD) and Total Suspended Solids (TSS). The authors appropriately chose the coagulation-flocculation process, a widely recognized and effective method for removing suspended and colloidal pollutants, to tackle this challenge. The systematic investigation of various process variables through a full factorial experimental design is a robust approach to identifying critical operational parameters, making the study's objective commendable for its scientific rigor. The use of chitosan, highlighted as an environmentally friendly coagulant, also introduces a valuable dimension of sustainability to the research. The abstract effectively conveys the core findings, pinpointing chitosan dose and settling time as the most influential variables for COD reduction, and settling time as the primary factor impacting TSS removal. This differentiation provides crucial insights into the distinct mechanisms at play during the treatment process and underscores the necessity of precise parameter adjustment for optimal performance. Such findings have significant practical implications for the vermicelli industry, demonstrating that the efficiency of wastewater treatment is highly dependent on careful optimization of operating conditions. The study's confirmation of chitosan's potential further solidifies its applicability as a sustainable and effective coagulant for food industry wastewater. While the abstract provides a strong overview, a full paper would benefit from a more detailed quantification of the achieved COD and TSS reduction percentages, offering a clearer picture of the process's overall effectiveness. Additionally, future work could explore the interactive effects between the identified influential variables and delve into potential multi-objective optimization strategies to balance treatment efficiency with economic factors and sludge management considerations. Nevertheless, this research provides a valuable contribution to the field of industrial wastewater treatment, offering critical operational insights and reinforcing the promise of sustainable coagulants like chitosan in addressing significant environmental challenges.

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