Before the recession, Metro Atlanta and its surrounding counties were one of the fastest growing
regions in the United States. In order to reduce the impact of treatment plant discharges on its
limited water supply and to offset water demands on potable water systems, they were
increasingly looking at water conservation and water reuse. Paulding County was one of those
fast-growing counties, consistently ranked between the 12th and 15th fastest growing counties in
the United States. Wastewater treatment facilities are among the most critical to support the
County’s rapid population increase. With tighter effluent limits on the way and a halt on surface
water discharge permits, the County had to look at alternative uses for the treated wastewater.
Several technologies were evaluated, and based on this evaluation, MBR technology became the
apparent leader. This paper provides an overview of the selection process, the procurement
process, and the performance of four MBR systems currently operating in Paulding County.
Posted: May 20th, 2011 | Filed under: 100K-500K, Waste Water Treatment | Tags: Improved Plant Efficiency, Plant Sustainability, Reduced Carbon Footprint, Water Reuse | No Comments »
Town of Davie System II Wastewater Treatment Plant
The Town of Davie, FL, is evaluating the feasibility of an upgrade its System II Wastewater
Treatment Plant (WWTP) with tertiary treatment to promote indirect potable reuse and obtain
aquifer recharge credit in Broward County. Florida Department of Environmental Protection
(FDEP) requires the evaluation and piloting of any advanced treatment technologies that plan to
engage direct recharge to the Biscayne Aquifer. Chapter 62-610, Part V, F.A.C mandates the
evaluation of such technologies via a pilot study to show the compliance of the reclaimed water
with groundwater recharge standards.
AECOM is currently conducting an advanced treatment pilot study for the Town consisting of
Ultrafiltration (UF), Reverse Osmosis (RO) and Ultraviolet Light/Hydrogen Peroxide (UV/H2O2)
processes. This study is intended to evaluate the feasibility of this process for compliance with
the FDEP and Broward County Environmental Protection Department (BCEPD) regulations for
direct recharge to the Biscayne Aquifer.
Posted: May 20th, 2011 | Filed under: <50K, Waste Water Treatment | Tags: Advanced Wastewater Treatment, Aquifer Recharge, Contaminants of Emerging Concern (CEC) Removal, Improved Public Health, Regulatory Compliance, Water Reuse | No Comments »
Faced with economic instability unlike any seen for decades and awakening to a level of awareness that no longer permits a careless attitude towards environmental matters, the world appears perched to begin a new era which embraces the overall concept of “sustainability”, a catch‐all phrase which establishes a higher level of accountability for our present day decisions and actions. Being sustainable means that we must make careful decisions today and establish means of assessing performance and impact so that we can be certain we don’t compromise things for future generations. Focusing strictly on the vital services which we require in support of our present quality of life, and forgetting for the moment about the luxuries and niceties that are associated with the various products which have become a routine part of our existence, there is now emerging a new perspective on infrastructure services that is captured in the title to this article: Efficient, Effective, Integrated, and Distributed. If we can fully appreciate the value of efficient, effective, integrated, distributed systems and make such changes, the green infrastructure market will rise with great velocity. If we do not make such changes, sustainable infrastructure programs will see a slow and cumbersome evolution mired by large scale capital investment programs and general lack of integration. Source: WEFTEC 2009 Proceedings
Posted: August 27th, 2010 | Filed under: Waste Water Treatment, Water Treatment | Tags: Environmental Impact, Plant Sustainability, Water Reuse | No Comments »
Valued qualities such as portability, small footprint, fast start up, and high effluent quality have made package membrane bioreactor (MBR) systems a preferred technology for decentralized wastewater treatment applications. Package MBR systems have many advantages which make them ideal for decentralized wastewater treatment applications, particularly those looking for high effluent quality including total nitrogen removal. However, the selection of a package MBR system can be overwhelming for decision makers given the wide variety in available package MBR systems today and if not evaluated properly can lead to selection of a system that cannot meet the low flow challenges often encountered by decentralized wastewater treatment applications. Therefore it becomes important for decision makers to recognize whether the package MBR system is designed with features that allow it to maintain treatment conditions during low flows. This includes a properly designed flow equalization system capable of handling low influent flows which can be done using multiple pumps with VFDs or an influent flow splitter configuration. The package MBR system should also be designed with system turndown through the use of multiple treatment trains and/or use of multiple pumps and blowers. Lastly the package MBR system must be able to maintain control of oxygen delivery during low flows. Selecting a system which incorporates these low flow design methods into the design of the package MBR system will lead to selection of a system that will reliable meet total nitrogen limits at low flow conditions. Source: WEFTEC 2009 Proceedings
Posted: July 6th, 2010 | Filed under: Waste Water Treatment | Tags: Nitrogen Removal, Reduced Carbon Footprint, Sustainable Technologies, Water Reuse | No Comments »