Abstract

This study evaluates the process performance of a real-scale anaerobic baffled reactor (ABR) coupled with swim bed tank (SBT) as an aerobic post-treatment process in treating fishmeal wastewater discharged from an actual fishmeal processing factory in Bali, Indonesia. The industrial wastewater released from the aforementioned factory contains high concentrations of organic COD (more than 10 g COD·L⁻¹) and ammonia (100 to 200 mg-N·L⁻¹). During the study period, ABR demonstrated a high organic removal of 95.7 ± 2.9%, with an organic loading rate of 2.1 ± 1.3 kg COD·m⁻³·day⁻¹. Furthermore, the average total COD influent and effluent of the proposed system were 37,800 ± 15,000 mg COD·L⁻¹ and 435 ± 113 mg COD·L⁻¹, respectively, during the entire experimental period. Based on the determination of volatile fatty acids (VFAs) and microbial community analysis of the ABR-retained sludge, the first and second columns of the ABR were utilized as hydrolysis zones and the third column functioned as an acidification zone. The remaining columns were used for methane production and as final removal zones. The results concluded that this system has the potential to treat fishmeal wastewater under onsite industrial conditions.

摘要

这项研究评估了实际规模的厌氧折流板反应器（ABR）和游泳床水箱（SBT）作为好氧后处理工艺的性能，该工艺用于处理印度尼西亚巴厘岛一家实际鱼粉加工厂排放的鱼粉废水。从上述工厂排放的工业废水中含有高浓度的有机COD（超过10 g COD·L ^-1）和氨（100至200 mg-N·L ^-1）。在研究期间，ABR的有机去除率高达95.7±2.9％，有机负载率为2.1±1.3 kg COD·m ^-3 ·day ^-1。此外，拟议系统的平均总COD流入量和流出量为37,800±15,000 mg COD·L ^-1和435±113 mg COD·L在整个实验期间分别为^-1。根据挥发性脂肪酸（VFA）的测定和ABR保留污泥的微生物群落分析，将ABR的第一和第二塔用作水解区，第三塔用作酸化区。其余的塔用于甲烷生产和作为最终去除区。结果表明，该系统具有在现场工业条件下处理鱼粉废水的潜力。