Sagung Anggun Istri Wulantari, I Kadek Widiantara, I Made Wahyu Wijaya

ANALISIS EFEKTIVITAS UNIT KOLAM AERASI BERDASARKAN ASPEK TEKNIS PADA INSTALASI PENGOLAHAN AIR LIMBAH SUWUNG DENPASAR

Introduction

Analisis efektivitas unit kolam aerasi berdasarkan aspek teknis pada instalasi pengolahan air limbah suwung denpasar. Analisis efektivitas teknis unit kolam aerasi di IPAL Suwung Denpasar. Studi ini mengkaji desain dan kinerja unit pengolahan air limbah, memenuhi standar kualitas dan regulasi.

Abstract

The government has built a Wastewater Treatment Plant (WWTP) to reduce environmental pollution. Suwung WWTP is a liquid waste treatment unit constructed using an aerated lagoon and sedimentation pond system to treat household wastewater in the areas around Denpasar, Sanur, and Kuta. The purpose of this study is to understand the technical design of the aerated lagoon unit at Suwung WWTP in Denpasar. This study uses a comparison of aerated lagoon design criteria with existing data from the aerated lagoon at Suwung WWTP. The study results on the quality of influent and effluent from the aeration ponds at Suwung WWTP have met quality standards according to the Bali Governor Regulation Number 16 of 2016 regarding BOD, TSS, pH, and DO parameters. The effectiveness of BOD removal in aerated lagoon I was 34.04% and in aerated lagoon II was 24.68%, while the TSS removal in aerated lagoon I was 23.72% and in aerated lagoon II was 11.68%. The existing aerated lagoon design complies with the design criteria indicators for aerobic flow through as per Annex II of PUPR Regulation No. 04 of 2017.

Review

This paper presents a valuable analysis of the technical effectiveness of the aerated lagoon units at the Suwung Wastewater Treatment Plant (WWTP) in Denpasar, a crucial facility addressing environmental pollution from household wastewater. The study's objective to understand the technical design of these units is directly relevant to environmental engineering and public health. By comparing existing operational data with established design criteria and local quality standards, the authors provide a practical assessment of a real-world wastewater treatment infrastructure. The initial finding that the effluent quality met parameters set by Bali Governor Regulation No. 16 of 2016 for BOD, TSS, pH, and DO is a significant positive outcome. A key strength of this research lies in its direct application to an existing WWTP, offering concrete data and a technical evaluation for local stakeholders. The study meticulously reports that the existing aerated lagoon design complies with the technical criteria for aerobic flow through as per PUPR Regulation No. 04 of 2017, providing a crucial validation of its structural and conceptual integrity. Furthermore, the explicit presentation of BOD and TSS removal efficiencies for both aerated lagoons (e.g., 34.04% and 24.68% for BOD) offers specific performance indicators that are vital for operational monitoring and future planning. This level of detail makes the findings highly pertinent for WWTP operators and environmental regulatory bodies. While the study concludes that the effluent meets quality standards and the design complies with regulations, the reported removal efficiencies for BOD and TSS appear notably modest for an aerated lagoon system. For instance, BOD removal percentages of 34% and 24% suggest that despite meeting the final discharge limits, there might be significant room for improvement in the actual treatment performance or that the influent characteristics are already quite favorable. An expert review would typically inquire into the reasons behind these lower removal rates compared to conventional expectations for aerated lagoons, which often achieve higher efficiencies. Future work could benefit from exploring optimization strategies, investigating potential operational challenges, or benchmarking these efficiencies against similar facilities, to enhance the overall effectiveness and sustainability of the Suwung WWTP.

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