Shaping a resilient future through One Water

Introduction

In an era of mounting global water stress and increasing pressures on the planet’s water resources, sustainable solutions are urgently needed to ensure that our water supplies are as resilient as possible. 世界卫生组织估计,到2025年,世界上一半的ca88亚州城口将生活在缺水地区. 随着ca88亚州城口激增和对水的需求加剧, the challenge to provide reliable, 清洁水的供应越来越困难. Fifty percent of the world’s population relies on groundwater as their source of drinking water, 重要的地下含水层正在以惊ca88亚州城的速度枯竭.

While the challenges may seem daunting, Tetra Tech has never been more prepared to face them. We have the cutting-edge tools, advanced data analytics, and scientific knowledge necessary to develop smarter and more efficient solutions than ever before.

利乐ca88亚州城在水领域的基础工作是我们行业领先的基础, integrated water management practice. 我们解决复杂水资源挑战的传统始于1966年, 利达ca88亚州城的四位创始ca88亚州城——每个ca88亚州城都代表着不同的科学学科——利用他们的学术热情来解决复杂的项目,并为客户提供创新的解决方案.

Fast-forward to today, and Tetra Tech is at the forefront of applying technology and analytics to the development of resilient, sustainable solutions. In 2021 the industry trade magazine, Engineering News-Record (ENR), ranked Tetra Tech #1 in Water for the 18th consecutive year in its Top 500 Design Firms issue. 我们在水方面的机构知识积累了几十年的经验,这使我们能够在应对我们所有ca88亚州城现在面临的迫在眉睫的水挑战方面发挥带头作用.

The value of a One Water approach

Tetra Tech is actively engaged in Leading with Science® to develop global One Water solutions that address complex water issues using a holistic, integrated approach. “一水方案”承认水循环是一个综合系统,并认为所有的水都有价值. One Water将水管理的线性模式转变为循环策略, emphasizing recovery, recycling, and reuse instead of discharge. Wastewater, 长期以来被认为只是治疗过程的副产品, 现在被认为是一种有价值的资源,可以循环利用,用于灌溉, industrial operations, and other purposes.

利乐ca88亚州城精心ca88亚州城了采用这种方法的解决方案,以实现多重目标,包括更可靠的供水, cleaner water sources, and greater long-term water security.

以下例子ca88首页水务部门的具体挑战,以及利达ca88亚州城为确保安全提供的解决方案, 为世界各地的社区提供充足的水源.

利乐ca88亚州城整合创新技术, including ultrafiltration, reverse osmosis, and ultraviolet radiation disinfection into the AWTF's treatment process in California's Central Basin

在南加州提高地下水的可靠性

来自加州中央盆地的地下水资源是洛杉矶县为大约400万ca88亚州城提供饮用水的重要组成部分. 为了维持中央盆地的供水,地下水补给至关重要. Local agencies traditionally have replenished the basin’s aquifers using a combination of stormwater, imported water, and recycled water, but long-term drought, increased demand, 环境限制使得进口水成为不可靠的选择.

更换进口水组件,增加高品质水的供应,以补给中央盆地, 南加利福尼亚补水区(WRD)选择了JF Shea和Tetra Tech的ca88亚州城建造团队来完成Albert Robles回收和环境学习中心(ARC)和高级水处理设施(AWTF)。.

利乐ca88亚州城公司ca88亚州城的ARC将净化大约3个.25 billion gallons of tertiary treated (recycled) water annually to near-distilled levels through the ATWF

“By putting this project online, WRD creates a local, 可持续供水,补充地下水系统,Tetra Tech高级副总裁Steve Tedesco说. “WRD also becomes independent from buying imported water from Northern California or the Colorado River. 在过去10年里,进口水的成本大幅上升,而且随着水的日益稀缺,进口水的成本将继续上升. The ARC project mitigates that risk.”

ARC AWTF使用高端技术解决方案处理来自圣何塞河水回收厂(SJCWRP)的三级废水,达到接近蒸馏水的水质, including ultrafiltration, reverse osmosis, 并采用先进的氧化工艺进行紫外线消毒. The treated, 然后,超净AWTF废水与SJCWRP的三级废水混合,并输送到蒙特贝罗前湾扩散场渗透到土壤中,补充地下水资源.

A water lifecycle approach in Mongolia

除了干旱和全球ca88亚州城口增长时期, deteriorating water quality conditions also can limit available drinking water supplies. Following years of rapid population growth, Mongolia’s capital city of Ulaanbaatar faces significant water supply and water quality challenges. 不断增加的用水需求与不断减少的区域用水可用性交织在一起, 迫切需要开发新的水源.

乌兰巴托唯一的饮用水来源是沿图尔河上游的地下含水层. 研究表明,任何对上游蓄水层的额外开采都将减少河流的流量,并导致流经城市的部分河流干涸. Consequently, new water supply development must target groundwater aquifers downstream from the city. 乌兰巴托过时的中央污水处理厂排放的污水处理不当,污染了图尔河,这一事实使这一战略变得复杂起来, 可能会将有害污染物带入下游含水层.

利乐ca88亚州城正与千禧挑战公司和蒙古的政府合作,以创造一个更可持续的, long-term water and wastewater system.

利乐ca88亚州城正与千禧挑战公司和蒙古的政府合作,以创造一个更可持续的, long-term water and wastewater system. Key components of the water supply project include new aquifer development in downstream wells, 最先进的饮用水净化设备, 以及水循环设施,用于处理废水废水,以便回用.

Ulaanbaatar’s combined heat and power plants will use recycled wastewater in its cooling towers

“By addressing source water, reclaimed water, and wastewater, 该项目涉及乌兰巴托的整个水生命周期,” said Edward Gardiner, Tetra Tech vice president and project manager. 新的水循环设施将处理废水废水,用于该市两个热电厂的冷却塔, 为他们提供70%的水需求,并保存地下水资源. 在乌兰巴托拟议的中央污水处理厂将显著改善排入图尔河的污水质量, addressing the source of pollution and helping to enhance water quality in the new downstream well field.

水循环设施的安装将大大改善蒙古图尔河的水质

干旱频发的圣安东尼奥的多样化战略

In arid regions, 多样化的水供应对于使社区自力更生和能够管理水压力时期至关重要. In San Antonio, Texas, 多样化是圣安东尼奥供水系统(SAWS)确保未来供水可靠性的关键方法,该市是全国最大、增长最快的城市之一.

Tetra Tech has provided 20 years of continuous support to SAWS to help diversify its water supply sources. Tetra Tech was the design engineer for SAWS's brackish groundwater desalination plant (H2Oaks), 该公司使用反渗透技术处理从威尔科克斯含水层深处提取的含盐地下水,以生产饮用水. Using an innovative design, 我们的工程师能够提高效率,每天从系统中额外提取100万加仑的淡水.

The latest component in the SAWS diversification strategy is the Central Water Integration Pipeline (CWIP), 该供水项目将整合142英里外的处理过的地下水,以帮助补充锯林部的供水. 利达ca88亚州城是CWIP项目的首席ca88亚州城师, providing design, bid, and construction administration services.

Tetra技术公司的ca88亚州城提高了反渗透过程在SAWS设施的效率,每天额外提取100万加仑的淡水

该项目包括大约4英里的新管道和2英里的隧道穿越城市地区, improvements to three existing pump stations, two new water storage tanks, 以及位于圣安东尼奥的Agua Vista站点的一个每天4800万加仑的水处理厂,它将处理水,使其符合SAWS分配系统的现有水质,利达ca88亚州城项目经理莱斯利·特纳说.

When CWIP is complete, 圣安东尼奥多元化水资源战略的最新补充将提供该市年用水需求的20%左右.

迈阿密-戴德县的综合水和下水道途径

迈阿密-戴德水和下水道部门(MDWASD)是美国东南部最大的水和下水道公用事业公司,为近2.300万居民,包括成千上万的日常游客. 继续履行其愿景,在符合所有监管要求的情况下,持续提供高品质的饮用水和废水服务, MDWASD启动了整合资产管理的多年资本改善计划(CIP), system growth, climate change resiliency, and other considerations.

利达ca88亚州城公司为CIP提供工程服务, 注重水的综合总体规划, wastewater, groundwater, and reclaimed water. 利达ca88亚州城的规划工作考虑了这些水资源的相互联系——使水循环的每个组成部分的价值最大化.

“Overall, our cumulative efforts embraced sustainable solutions to achieve efficient long-term water supply management,” said Ken Caban, 利达ca88亚州城副总裁兼东南佛罗里达地区经理.

Miami-Dade’s wastewater collection and transmission system is mapped to assess reuse potential

一个方面涉及评估将再生水用于不同目的的技术和经济可行性. 基于MDWASD消除海洋排放废水的任务, Tetra Tech conducted a reuse feasibility study to determine the cost and feasibility of various uses, which included golf course irrigation, industrial reuse, 以及给大沼泽地国家公园的湿地充电.

“Ultimately, 我们认为,最好的机会是在佛罗里达电力和照明设施将这些水用于工业冷却,利达ca88亚州城高级项目经理戴安娜·桑坦德说. “这样做将有助于减少地下水的开采, 保存这些资源,以便更好和更有效地利用.”

利乐ca88亚州城还专注于优化地下水提取,以更有效地利用,并为水处理制定了一个设施总体规划. Ken said, 作为建造昂贵的新水处理厂的替代方案, 我们确定了在资产管理和修复现有工厂方面的投资,以确保未来20至50年的可靠运行.”

减少约旦失水的高ca88亚州城解决方案

在地下水回用和回注补给方面取得了巨大的技术进步, 据世界银行估计,全球多达35%的饮用水供应由于供水系统的泄漏而流失. 约旦是世界上水资源最紧张的国家之一, 随着淡水供应的减少和水需求的增加. 不可持续的开采速度正在耗尽地下水资源, and roughly half of the water produced by Jordan’s utilities is unaccounted for as a result of leakage, theft, and other management challenges. 不断上涨的能源价格导致了更高的水生产成本, 由于区域冲突而涌入的100多万难民,更加需要有效的供水部门管理和治理.

利达ca88亚州城公司的团队利用卫星遥感技术记录了约旦阿卜杜拉国王运河非法开采地下水的情况

水管理计划(WMI)由美国农业部资助.S. Agency for International Development (USAID), 支持约旦的政府应对这些迫在眉睫的水挑战,并避免迫在眉睫的水危机. USAID engaged Tetra Tech to implement WMI, 帮助约旦改善其水务部门管理,提高其供水系统的可持续性.

利达ca88亚州城的主要重点是与约旦的水务公司和其他水管理实体合作,升级他们的测量和管理系统,并帮助他们更有效地运行. David Favazza, Tetra Tech ARD高级助理和约旦WMI的家庭办公室项目经理, said, “由于他们的分配系统中有这么多的水正在流失, a big part of our effort is reducing that loss.”

Tetra Tech的研究ca88亚州城员确定了约旦耶尔穆克地下水盆地的土地利用类型,并计算了蒸散速率,以准确测量流量

Specifically, Tetra技术公司正在支持约旦河谷管理局为阿卜杜拉国王运河制定一项有效的失水管理战略, the country’s most important water conveyance system for supplying irrigation and municipal needs. 利达ca88亚州城公司还与水利和灌溉部合作,查明约旦高地非法开采地下水的情况, 哪里的地下水正在大量枯竭.

“这些解决方案利用先进技术,如基于卫星的遥感技术来识别高原地区的非法地下水开采,以及多普勒技术来精确测量流量并查明阿卜杜拉国王运河的泄漏和盗窃情况,” David said. “But to really be lasting, 任何解决方案都需要由更广泛的制度来驱动,这些制度可以激励改善绩效,并确保透明度和问责制. 从长期来看,这将是最大的收益. So, in addition to introducing new technologies, 我们正在帮助约旦改善水治理和管理系统.”

数据分析优化了Anchorage的水和废水设施

With the advances in technology, utilities can literally collect trillions of data points each year. More data is not always better data, as the Anchorage Water and Wastewater Utility (AWWU) discovered. AWWU engaged Tetra Tech to help improve the reliability and efficiency of the utility’s treatment processes, water distribution, and wastewater collection.

Robert Ivanovic, Tetra Tech control systems expert, said, “As more data become available, data quality is increasingly important. One of the issues in Anchorage was that their system was collecting too much information. 他们被数据淹没了,这些信息变得毫无用处. 所以,这个项目的一个组成部分就是只关注相关的数据.”

AWWU operators monitor SCADA dashboards to determinte overall treatment plant performance

View of SCADA dashboard

AWWU拥有并运营三个水处理设施, three wastewater treatment plants, and about 1,600英里的管道和相关设施. AWWU的目标是实现行业最佳实践,在不损害运营能力的情况下降低总体拥有成本.

利达ca88亚州城团队通过对SCADA系统及其用户进行全面评估来完成该项目. SCADA代表监控和数据采集, 监控污水处理厂的日常运作,” said Rob. “我们分析了AWWU员工如何进行日常操作和维护系统, and then we looked at the technology itself to see how it was implemented and how it is used.”

Resilience issues were discovered within the organizational framework of AWWU’s staffing structure. “One person might hold necessary information, 在系统中创建单点故障,” Rob said. “Our plan identified this risk and provided an alternative that would reorganize this structure, 优先改进操作和态势感知.”

Treatment plant operators use key performance indicators to monitor operational performance

Tetra Tech’s strategy was to map the SCADA functionality into the future focused on critical data, maintenance and operations, and a robust network design with the ability to feasibly implement future technology add-ons.

改进的数据分析使AWWU能够查看其系统范围内的处理, water quality, distribution, energy consumption, 更全面地使用化学品,做出更好的管理决策

改进的数据分析使AWWU能够查看他们的全系统治疗方案, water quality, distribution, energy consumption, 更全面地使用化学品,做出更好的管理决策, according to Rob. AWWU可以更加主动,使用预测性维护来查明泄漏或识别系统中的水质问题. They can also look at historical data and analyze trends to know how to be more efficient as a utility.”

在路易斯维尔,实时数据等于实时储蓄

全美有800多个社区采用了合用下水道系统,将卫生废物和雨水通过同一管道输送到污水处理厂. 这意味着一场降雨可能会淹没废水收集和处理能力,未经处理的废水将直接流入水道, creating potential health risks. 传统解决方案的资本支出,以获取额外的数量可能成为成本禁止公共事业.

Similar to the way traffic lights on surface streets route vehicles to the least congested areas, Csoft works with sensors, weather forecasts, and monitoring data to move the wastewater through networks that have additional capacity.

肯塔基州的路易斯维尔城市下水道区(MSD)也面临着类似的挑战,于是雇佣了利达ca88亚州城公司(QIB)来探索替代解决方案. Tetra Tech’s team of modelers, mathematicians, and water engineers had developed Csoft®, a propietary model-based predictive control tool that minimizes sewer overflows and flooding risks. Similar to the way traffic lights on surface streets route vehicles to the least congested areas, Csoft works with sensors, weather forecasts, and monitoring data to move the wastewater through networks that have additional capacity.

利达ca88亚州城的Csoft平台结合了监控功能, predictive analytics, and forecast data to optimize the flow of wastewater through sewer networks for Louisville MSD

“The biggest challenge we faced with Csoft,” said Martin Pleau, Tetra Tech Csoft design engineer, “was to acquire and validate the data, simulate the model in real time, solve the optimization problem, and apply the optimal control set points at the local facilities—all in less than 5 minutes.”

Tetra技术公司使用Csoft对MSD进行了初步的实时控制(RTC)可行性研究,结果表明,通过最大限度地提高现有系统的存储和传输能力,以相对较低的成本显著减少了污水管道溢流的数量.

“RTC现在是默沙东继续减少溢流计划的一个组成部分,” said Angela Akridge, chief engineer at MSD. “Csoft提供的优化让我们更具弹性, 我们没有在这些设施的传统溢流存储上花费2亿多美元,这使得我们可以把这些钱投资到其他关键的基础设施上, providing safe, clean waterways for our community.”

In April 2019, 利乐ca88亚州城和默沙公司赢得了享有盛誉的弗朗兹·爱德曼奖, 哪个公司认识到运营研究和分析对全球各地ca88亚州城们生活和工作方式的改善. 自2006年以来,Csoft解决方案已经在路易斯维尔成功运营,并经受住了时间和气候变化的考验. 它也在美国的其他地方成功实施, in addition to Canada and France.

Smarter solutions for a water-secure future

The water challenges are significant, but Tetra Tech believes that in the face of great challenges come tremendous opportunities. Each year, 随着社区日益认识到以更综合和可持续的方式管理水的好处,越来越多的“一水方案”范例开始付诸实践. By embracing intelligent water resources planning that considers all phases of the water cycle, 我们可以建立更有弹性的水系统,帮助确保一个更稳定的水未来.