Farizoğlu Burhanettin, Uzuner Süleyman
Environmental Engineering Department, Engineering Faculty, Balıkesir University, 10145 Balikesir, Turkey.
Membranes (Basel). 2019 Nov 19;9(11):155. doi: 10.3390/membranes9110155.
The most important obstacle to the widespread use of membrane bioreactors (MBRs) is membrane fouling. In this study, a high-efficiency compact MBR was developed. Therefore, the draft tube of the jet loop reactor (JLB) was planned for use as a membrane module. The high-velocity jet streams, which are present according to the nature of the JLBs, provide high crossflow (cut-off force) on the membrane surface. Thus, the produced membrane module is operated in submerged membrane mode. This enhanced JLB modification is named the membrane draft tube jet loop reactor (MDJLR). This new system has a Ka value of 139 h (at E/V of 2.24 kW m). In the next stage, treatment of slaughterhouse wastewater with the MDJLR was carried out. Under the 5.5 kg COD m d loading rate, efficiencies over 97% were achieved. The system operated continuously for 50 days without membrane backwashing or cleaning. During this period, fluxes of 3 L m·h were approximately obtained at operating conditions of 850 mg L MLSS (mixed liquor suspended solids) concentration, 1 bar suction pressure (∆P), and 3000 L h circulation rate. This developed MDJLR will make jet loop membrane bioreactors (JLMBRs) and MBRs more compact and improve their performance.
膜生物反应器（MBR）广泛应用的最重要障碍是膜污染。在本研究中，开发了一种高效紧凑型MBR。因此，计划将喷射环流反应器（JLB）的导流筒用作膜组件。根据JLB的特性产生的高速射流在膜表面提供了高错流（截留力）。因此，所生产的膜组件以浸没式膜模式运行。这种改进的JLB被命名为膜导流筒喷射环流反应器（MDJLR）。这个新系统的Ka值为139 h（在E/V为2.24 kW/m时）。在下一阶段，使用MDJLR对屠宰场废水进行了处理。在5.5 kg COD/m·d的负荷率下，实现了超过97%的效率。该系统连续运行50天，无需进行膜反冲洗或清洗。在此期间，在850 mg/L混合液悬浮固体（MLSS）浓度、1 bar抽吸压力（∆P）和3000 L/h循环速率的运行条件下，大约获得了3 L/m²·h的通量。这种开发的MDJLR将使喷射环流膜生物反应器（JLMBR）和MBR更加紧凑，并提高其性能。
