zeeDENSE膜曝气生物膜反应器

概览
工作原理
案例研究
资源

概览

ZeeLung MABR是新一代生物膜工艺，利用透气介质将氧传递到附着在介质表面的生物膜上。

ZeeLung MABR maximizes treatment capacity in existing tank volumes while also reducing energy consumption.

During secondary treatment, bacteria metabolize nutrients and organics - and need a flow of oxygen to get it done. Oxygen is typically pumped through diffusers to create bubbles. But most of the oxygen rises to the surface without being used and valuable energy is wasted. At Veolia, we saw a new approach. While conventional solutions require the construction of new tanks, ZeeLung MABR increases treatment capacity in existing assets and reduces energy use. ZeeLung enables process intensification and process resilience.

ZeeLung MABR solves the following treatment challenges:

提高处理能力
增加氨的去除率
进行脱氮
Enable biological phosphorus removal

ZeeLung MABR Benefits

工艺强化：将现有储罐容量的处理能力和/或性能提高多达50%
工艺弹性：附着生长的生物膜能够适应负载变化和不稳定的条件
便捷解决方案：ZeeLung膜盒安装在现有生物反应槽中，无需建造新的储罐，并且能够快速实施

节能和温室气体减排：将曝气能量与N2O排放量降低4倍的潜力

工作原理

How ZeeLung Membrane Aerated Biofilm Reactor Works

氧通过扩散而非气泡传递至生物膜，氧传递的能耗比微孔曝气低4倍。氨和有机物等污染物从本体溶液扩散到生物膜中，而生物膜中的细菌具有将其去除的最佳条件。

大型ZeeLung生物膜

大型ZeeLung施工

该产品是一种增强介质，其纱线芯支撑多根透气细丝。这种结构被称为“芯”，既柔韧又不会断裂。多个芯被封装在顶部和底部集管中构成模块，模块则安装在钢架中形成膜盒。膜盒被部署在生物反应器的混合液中。低压空气被输送到膜盒以传递氧并混合系统。

Installing ZeeLung MABR cassettes into an activated sludge reactor increases the inventory of biomass in the system without increasing the mixed liquor concentration. As a result, the same reactor volume has more treatment capability.

大型ZeeLung反应器

大型ZeeLung解决扩散问题

The process interaction of oxygen and pollutants is different in a ZeeLung MABR system compared to conventional active sludge and biofilm processes. With ZeeLung MABR, oxygen and substrates – such as ammonia and organics – enter the biofilm from opposite sides in a counter-diffusion configuration. This creates conditions that favor the growth of nitrifiers in the biofilm.This can be explained by the high diffusivity of ammonia into a biofilm, as compared to organic substrates, and the availability of dissolved oxygen which is highest at the media surface. Preferential growth of nitrifiers versus heterotrophs means that the ZeeLung biofilm “supercharges” nitrification in an activated sludge system. Simultaneous nitrification and denitrification can be achieved by installing ZeeLung cassettes in an anoxic zone.

ZeeLung MABR cassettes are simply deployed into existing tanks with minimal impact on the existing equipment and operations. This makes ZeeLung MABR a cost-effective and versatile solution for augmenting plant performance.

ZeeLung Severn Trent

案例研究

ZeeLung MABR demonstrates low energy, small footprint treatment at the North Toronto Treatment Plant: 下载完整案例分析

北多伦多污水处理厂是多伦多市管理和运营的四家废水处理厂之一，最初于1929年投入使用，至今已运行了近一个世纪。与加拿大的许多废水处理厂现状相同，该厂需要实现比原始设计值更高的废水处理水平。当地政府决定将此次升级项目作为评估创新技术的机会，以尝试在紧凑的占地面积内实现节能和强化处理。该市选择在现有二级处理厂四分之一的占地面积上实施MABR升级改造计划。处理厂配备了在线仪器，用于监测和优化MABR系统的性能，并与传统的活性污泥道进行对比。
ZeeLung MABR和zeeDENSE MABR提高了约克维尔-布里斯托尔卫生区的废水处理能力: 下载完整案例分析

Yorkville-Bristol卫生区面临着多重挑战，包括人口增长和工业负荷带来的产能限制、空间限制和磷排放合规要求。2017年，他们实施了ZeeLung MABR技术作为解决方案。当流量增加给澄清池处理能力带来新的挑战时，该设施在2023年实施了zeeDENSE MABR技术完成进一步升级，以应对持续增长的处理需求。
ZeeLung MABR delivers a future-proof nutrient removal upgrade for Hespeler Wastewater Treatment Plant: 下载完整案例分析

位于安大略省剑桥市的Hespeler废水处理厂 (WWTP) 是为滑铁卢地区600,000多名居民提供服务的13家工厂之一。为了满足预期的增长需求，该地区需要对Hespeler废水处理厂进行升级。该废水处理厂由一个活性污泥系统组成，用于去除TSS和BOD。该系统需要提高处理能力，并且未来可能还需要去除水中的氨。滑铁卢地区没有建造更多的活性污泥池，而是采用ZeeLung MABR解决方案对废水处理厂进行了升级，与传统升级方案相比，资金成本节约了50%。ZeeLung MABR系统既能节省场地空间，又能节约曝气能量。自2022年底以来，ZeeLung系统一直保持运行。
ZeeLung MABR demonstrates low-energy ammonia removal for Severn Trent Spernal Sewage Treatment Works: 下载完整案例分析

位于英国伯明翰附近的Spernal-Redditch污水处理厂是Severn Trent Water资源回收与创新中心的所在地。该处理厂可评估与低能耗和循环经济方法兼容的技术。2020年，Severn Trent委托对现有活性污泥道进行ZeeLung MABR升级，以证实该技术处理与人口增长和现有基础设施中废水成分变化相关的氨负荷增加的潜力。该项目还侧重于考察ZeeLung MABR在降低能耗和减少N2O排放方面的表现，以支持英国水务行业对碳中和目标的承诺。
ZeeLung MABR process intensification demonstration at the Chicago O’Brien Water Reclamation Plant: 下载完整案例分析

The Metropolitan Water Reclamation District of Greater Chicago (MWRD) has over 100 years of history in innovative wastewater treatment. The O’Brien Water Reclamation Plant (OWRP) treats municipal sewage with some industrial contribution at an average daily flow of 230 mgd and wet weather peaks of 500 mgd, facing ammonia challenges during spring. MWRD partnered with Veolia to evaluate ZeeLung MABR for its potential to intensify the biological treatment process by providing nitrification in a much smaller tank volume than conventional activated sludge requirements, thereby expanding the capacity of existing aeration tanks to institute an anaerobic zone for enhanced biological phosphorus removal (EPBR), without the need to construct additional infrastructure
ZeeLung MABR technology delivers a compact, low-energy, high efficiency decentralized wastewater treatment: 下载完整案例分析

位于澳大利亚维多利亚州的Burwood Brickworks旨在成为世界上最可持续的零售中心。该目标的两个重要方面是水的再利用和能源效率。因此，该商业地产的开发商想要寻求一种低能耗的水回用解决方案，用于处理零售场所收集的黑水和雨水。设计和建造商业回收解决方案的全球领先企业Aquacell选择了Veolia的ZeeLung MABR技术作为其设计的一部分，为Burwood Brickworks项目提供高效、节能的回收和再利用解决方案。处理后的水将在Burwood Brickworks工厂内重新使用，用于冲洗、冷却、灌溉和其他用途。该解决方案于2019年9月安装，并于2020年投入使用。该使用案例展示了ZeeLung MABR技术如何与其他处理解决方案相结合，为分散式水回用提供卓越且可持续的废水处理解决方案。
ZeeLung MABR compact, low-energy nutrient upgrade demonstration in the United Kingdom: 下载完整案例分析

Population growth in the UK has driven the need for expanded treatment capacity where land is limited, along with stricter nutrient removal requirements. Veolia partnered with a UK water company to evaluate ZeeLung MABR for upgrading activated sludge plants, demonstrating its ability to meet BOD5 (10 mg/L) and ammonia (2 mg/L) requirements. The project proved ZeeLung MABR could enhance nutrient removal while reducing energy consumption.