Limbah Cair Industri Tahu dan Dampaknya Terhadap Kualitas Air dan Biota Perairan

Abstract

Tofu industrial liquid waste will affect water bodies if it was directly disposed of without prior management and causes water quality and aquatic life problems. This study aims to examine the impact of the tofu industrial wastewater concentration on water quality, swimming patterns, and fish behavior. The research was conducted by testing in the laboratory using an aquarium and analyzed descriptively. The treatments that were tried were liquid waste tofu with a concentration of 0%; 0.4%; 0.6%; 0.8%; 1.0% and 1.2% of the volume of 10 liters of water. Each aquarium was filled with 24 fish with a size of 4-5 cm. The observation method was carried out for 96 hours. The results of water quality measurements of pH, DO, CO2, COD, TSS, and H2S exceed the quality standard, while the temperature, BOD5, and ammonia are still below the quality standard. Fish behavior moves to avoid waste, swarming behavior while fish swimming patterns swim on the surface, swim irregularly, swimming patterns change with a standing position. The concentration of tofu wastewater was 0.4%; 0.6%; 8%; 1.0% and 1.2% affect swimming patterns and fish behavior.