奥兰治县水区（OCWD）最近委托 地下水补给（GWR）系统是一种先进的污水处理系统 由微滤（MF）和反渗透组成的处理设施 高级氧化（用过氧化氢进行紫外线处理）。 GWR系统作为一种间接饮用水再利用设施开发，提供 70mgd净化废水，用于地下水补给和维护 入侵屏障，保护当地地下水盆地免受海水渗透。 GWR系统的水源由二级市政污水组成 由奥兰治县卫生区（OCSD）提供。次要的 废水由两个过程产生，即活性污泥（AS） 处理和滴滤器（TF）处理。 GWR系统设计规定了AS废水和TF废水的混合进料 来自OCSD。然而，在GWR系统MF可行性测试期间，仅当 对废水进行了评价。当时的基础设施限制 在OCWD测试设施。而AS和TF工艺产生的 二级出水，二者的水质存在差异， 可能影响MF业绩的差异。溶解气体的浓度 TF废水中的有机成分和颗粒物质通常较高， 与废水相比。滴滤器也提供了良好的过滤效果 蜗牛的生存环境，蜗牛以蜗牛身上的动物性生物粘液为食 TF媒体。蜗牛是有问题的，因为它们会增加有机物和蛋白质的含量 脱落并输送至二沉池时的悬浮固体负荷。 蜗牛（和蜗牛壳）也可能对MF膜造成物理损伤 光纤（如果输送至GWR系统）。MF膜的完整性 危害，导致大量有害影响，降低有效植物 操作。考虑到这些问题，TF废水在前8个月没有得到处理- 手术数月，直到进行进一步研究。这一决定的结果是: 因此，处理厂无法在设计容量下运行 加快及时解决这一问题的必要性。 本文记录了简化和创新的试点测试工作 旨在验证TF废水对MF处理的影响 过程（以及GWR系统的操作）。此外，还有各种各样的水 进行质量分析，以检查出水的差异 两个二级处理过程之间的质量。包括数字。

The Orange County Water District (OCWD) recently commissioned the Groundwater Replenishment (GWR) System, an advanced wastewater treatment facility consisting of microfiltration (MF), followed by reverse osmosis and advanced oxidation (ultraviolet treatment with hydrogen peroxide). Developed as an indirect potable reuse facility, the GWR system provides 70mgd of purified wastewater for groundwater recharge and maintenance of an intrusion barrier to protect the local groundwater basin from seawater infiltration. Source water to the GWR system consists of secondary municipal effluent provided by the Orange County Sanitation District (OCSD). Secondary wastewater is produced by operating two processes, activated sludge (AS) treatment and trickling filter (TF) treatment. The GWR System design specifies a blended feed of AS effluent and TF effluent from OCSD. During GWR System MF feasibility testing, however, only AS effluent was evaluated. Infrastructure limitations at the time prohibited blending at the OCWD test facility. While the AS and TF processes produce acceptable secondary effluent, there are disparities in water quality between the two, differences that could impact MF performance. The concentration of dissolved organic constituents and particulate material are generally higher in TF effluent, when compared to AS effluent. Trickling filters also provide a favorable environment for snails, which graze on the zoogenic biological slime present on the TF media. Snails are problematic since they add to the organic and suspended solid load when sloughed off and carried to the secondary clarifiers. The snails (and snail shells) could also physically damage the MF membrane fibers if conveyed to the GWR system. MF membrane integrity would be compromised, resulting in a host of deleterious affects that reduce effective plant operations. Given these concerns, TF effluent was not treated during the first 8- months of operation until further studies were performed. This decision resulted in the treatment plant being unable to operate at the design capacity, therefore expediting the need to resolve this issue in a timely manner. This paper documents the streamlined and innovative pilot testing efforts undertaken to verify the impact TF effluent would have on the MF treatment process (and operations of the GWR system). In addition, a variety of water quality analyses were performed to examine the differences in effluent water quality between the two secondary treatment processes. Includes figures.