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首页> 外文会议>Membrane technology 2008 >HYBRID MBR-BASED DESIGN: COST EFFECTIVE PERFORMANCEOPTIMIZATION FOR PEAK FLOWS AND LOADS
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HYBRID MBR-BASED DESIGN: COST EFFECTIVE PERFORMANCEOPTIMIZATION FOR PEAK FLOWS AND LOADS

机译：基于混合MBR的设计：峰值流量和负载的成本有效性能优化

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The Brightwater Treatment Plant (Brightwater) is a new wastewater treatment and reclamationrnfacility owned and operated by the King County Wastewater Treatment Division. The project isrnunder construction and is scheduled to begin service in late 2010. The plant is configured withrnan innovative, hybrid, split-flow treatment process, incorporating conventional and chemicallyenhancedrnprimary clarification (CEPC) processes ahead of a membrane bioreactor (MBR). Thisrndesign uses the CEPC process to reduce peak flow to the MBR by treating portions of extremernwet weather flows, expected to occur on less than 10 percent of the days in any year. CEPCrneffluent will flow either to the MBR or blend with MBR effluent prior to disinfection andrndischarge as dictated by available MBR capacity.rnThe hybrid MBR design was originally conceived to allow MBR technology to be applied to arntreatment plant that receives high peak flows during wet weather events. Sizing the liquid streamrnprocess for highly efficient treatment of non-peak flows and providing another means ofrntreatment for storm-influenced flows offers opportunities to reduce pollutant loads, capital costs,rnand operating and maintenance costs. In addition to reducing peak flows to the MBR, the CEPCrnprocess is available as a tool to reduce peak biochemical oxygen demand (BOD) loads to thernMBR process. For example, if aeration capacity or process volumes prove inadequate for peakrnBOD loadings, CEPC could be used to reduce the BOD load to the MBR.rnWith the hybrid MBR split-flow design, the total BOD and total suspended solids (TSS) percentrnremovals will be greater than 88% and 92% respectively for the projected peak month flow andrnload. Additionally, effluent from the hybrid MBR process provides a significant netrnenvironmental benefit when compared to conventional activated sludge (CAS), reducing therndischarge of BOD and TSS by 73% and 79% respectively on an average annual basis. This paperrndiscusses configuration and development of the hybrid MBR process, system optimizationrnthrough a separate membrane system procurement, the value of the process in facility phasing,rnand regulatory approval of the project.
机译：Brightwater处理厂（Brightwater）是由King County废水处理部门拥有和运营的新型废水处理和再生设施。该项目正在建设中，计划于2010年下半年投入服务。该工厂配置了创新，混合，分流处理工艺，在膜生物反应器（MBR）之前结合了常规和化学增强的一级澄清（CEPC）工艺。该设计使用CEPC工艺，通过处理部分极端潮湿的天气流量来减少流向MBR的峰值流量，预计该极端潮湿的天气流量每年发生的时间少于10％。根据可用MBR的容量，CEPC废水将流进MBR或与MBR废水混合，然后再进行消毒和排放。混合MBR设计最初被设计为允许MBR技术应用于在雨天天气期间接收高峰值流量的精炼厂。调整液流工艺的尺寸以高效处理非高峰流量，并提供另一种方法来处理受暴风雨影响的流量，这为减少污染物负荷，资本成本，运营和维护成本提供了机会。除减少流向MBR的峰值流量外，CEPCrn过程还可以作为减少MBR过程的生化需氧量（BOD）峰值的工具。例如，如果曝气能力或处理量证明不足以达到BOD峰值负荷，则可以使用CEPC减少MBR的BOD负荷。rn通过混合MBR分流设计，总BOD和总悬浮固体（TSS）百分比去除将达到预计的高峰月份流量和空载分别大于88％和92％。此外，与传统的活性污泥（CAS）相比，混合MBR工艺产生的废水可提供显着的净环境效益，每年平均将BOD和TSS的排放量减少73％和79％。本文讨论了混合式MBR工艺的配置和开发，通过单独的膜系统采购进行系统优化，该工艺在设施分阶段中的价值以及项目的监管批准。

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