Muhamad Ng Sabrina Ng, Idrus Syazwani, Ahsan Amimul, Tuan Mohd Marzuki Tuan Nurfarhana, Mahat Siti Baizura
Department of Civil Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang 43400, Malaysia.
Cheme Advance Services Sdn. Bhd., Wisma Albe Advance, No 2, Jalan BS7/16, Kawasan Perindustrian Bukit Serdang, Seri Kembangan 43300, Malaysia.
Membranes (Basel). 2021 Jun 21;11(6):456. doi: 10.3390/membranes11060456.
This study compares the performance of the Hollow Fiber (HF) and Flat Sheet (FS) types of membrane bioreactors (MBRs) for the treatment of food and beverage (F&B) industry wastewater in a pilot-scale study of a wastewater treatment plant (WWTP). HF and FS membrane configurations were evaluated at two different Mixed Liquor Suspended Solid (MLSS) levels: 6000 mg/L and 12,000 mg/L. The performance of each configuration was evaluated in terms of Chemical Oxygen Demand (COD) and Total Suspended Solid (TSS) removals for effluent quality measurement. The transmembrane pressure (TMP), flux rate, and silt density index (SDI) were monitored and calculated for membrane fouling assessment. The results show that the rejection rates of COD and TSS for HF and FS membrane types were more than 84% for the two different MLSS levels. During the study, the HF membrane recorded 0.3 bar transmembrane pressure, which complies with the recommended range (i.e., two to three times of chemical cleaning). On the other hand, the FS membrane operates without chemical cleaning, and the TMP value was below the recommended range at 0.2 bar. It was found that the flux values recorded for both the HF and FS systems were within the recommended range of 40 L/m/h. Analysis of SDI revealed that the calculated index ranged between 1 and 2.38 and was within the allowable limit of 3. Both types of MBR consistently achieved an 80% to 95% rejection rate of COD and TSS. Effluent quality measurement of treated F&B wastewater in this pilot-scale study using a WWTP integrated with an MBR indicated a good achievement with compliance with the Malaysia industrial effluent discharge standards.
本研究在一家污水处理厂（WWTP）的中试规模研究中，比较了中空纤维（HF）和平板（FS）两种类型的膜生物反应器（MBR）处理食品和饮料（F&B）行业废水的性能。在两种不同的混合液悬浮固体（MLSS）水平下评估了HF和FS膜配置：6000 mg/L和12000 mg/L。根据化学需氧量（COD）和总悬浮固体（TSS）去除率评估每种配置的性能，以测量出水水质。监测并计算跨膜压力（TMP）、通量率和淤泥密度指数（SDI），以评估膜污染情况。结果表明，对于两种不同的MLSS水平，HF和FS膜类型对COD和TSS的截留率均超过84%。在研究过程中，HF膜的跨膜压力记录为0.3 bar，符合推荐范围（即化学清洗的两到三倍）。另一方面，FS膜无需化学清洗即可运行，TMP值低于推荐范围，为0.2 bar。发现HF和FS系统记录的通量值均在推荐范围40 L/m/h之内。SDI分析表明，计算得出的指数在1至2.38之间，且在允许极限3之内。两种类型的MBR始终实现了80%至95%的COD和TSS截留率。在这项中试规模研究中，使用集成了MBR的WWTP对处理后的F&B废水进行出水水质测量，结果表明取得了良好的成果，符合马来西亚工业废水排放标准。
