An equipment manufacturer's account of the effectiveness of using its automatic self cleaning screen filter to remove suspended solids prior to membrane treatment....

This presentation presenst the problems associated with placing on line different water supplies, particularly with emphasis on blending existing groundwater supplies with surface water and desalinated brackish water and/or seawater supplies and the impacts on chemistry and existing infrastructure that will results. Mitigation concepts are presente...

This paper provides an overview of utilizing nanofiltration membrane technology to remove more than 98% of sulfate from the brine and increase the salt removal efficiency of the Paradox Valley Salinity Control Injection Facility...

This presentation discusses a pilot-study evaluation at the Marden Water Treatment Plant in Boise, ID of an ion exchange resin dosed in line with a pressure driven ultrafiltration membrane in the context of NOM removal, membrane flux and fouling....

This manuscript presents the results of two pilot studies used to evaluate the minimum monitoring proposed under the 2003 draft version of LT2ESWTR. It also describes the role of alternate indirect methods in maintaining system performance and protection of public health....

This paper presents an economic comparison of stand-alone RO and conjunctive RO/ASR facilities proposed for the North Padre Island project, as well as an analysis of the ability of each system to meet current and projected maximum day and average day demands....

The paper decribes the economic evaluations that were developed for the City of Corpus Christi Texas for a baseline 5.0 mgd desalination project capacity, and recommendations for phased project implementation were developed. Based on the results of the study, the City of Corpus Christi is considering the role brackish water desalination may play i...

This paper will describe this delivery approach for a membrane bioreactor system and tools for managing associated risks. In addition, construction activities and lessons learned (to date) will so be provided. Clackamas County Water Environment Services (WES) initiated design for Phase I of the Tri-City Water Pollution Control Plant (WPCP) Expan...

This paper describes concerns for the implementation of microfiltration (MF) and ultrafiltration (UF) technology at an older conventional water treatment plant located in Barberton, Ohio. Actual specifications language and evaluation forms are used to illustrate potential solutions to obtaining full implementation costs and providing detailed econ...

The paper describes the evaluation of nanofiltration, reverse osmosis and ion exchange to meet the consumptive use constraints and finished water quality goals for Broward County Florida...

This paper describes the work realted to the design, pilot teting and startup of the City of Deerfield Beach nanofiltraton membrane plant using low fouling membrane technology....

This paper describes the design of a membrane treatment facility for Miami Dade Water and Sewer District for the dual treatment objectives of membrane softening and nitrate reduction for the South Miami Heights WTP. In addition, this facility will use an integrated membrane approach using parallel treatment trains of ultralowpressure (ULP) reverse...

This paper also discusses how an innovative evaluated bid process was used for selection and procurement of the membrane treatment system. Implementation of a 50 MGD Low-Pressure Membrane Filtration System for the Existing Racine Water Treatment Facility...

This paper presents a summary of analyses conducted for the City of Highland Park, IL evaluating the implementation of membrane filtration for increased capacity and/or advanced disinfection and comparing the economics to various alternative treatment strategies....

The paper descibes a worldwide inventory and a survey done in 2003 of full-scale municipal wastewater treatment facilities using membrane technologies The purpose of the inventory was to evaluate the types of membranes in use, geographical distribution, and chronological trends....

This paper describes the feasibility of: Reuse of wastewater treatment plant effluent for industrial supply, municipal supply and irrigation ;Reclamation of previously unsuitable (diverted) water for raw water supply and Treating poor quality groundwater to potable supply quality...

This paper describes the membrane concentrate Pilot Wetland Project conducted by the City of Oxnard Water Division to assist with the City's water resources master planning process and implementation of the Groundwater Recovery Enhancement And Treatment (GREAT) Program....

This paper will present the design issues considered throughout the feasibility study and pilot plant design process and identify critical issues associated with siting a desalination facility in land-limited areas. It will also describe the pilot test protocol, specific test objectives, and the design of pretreatment and SWRO systems expected to b...

Report of the effectiveness of membrane treatment over conventional coagulation/media filtration for pretreating feedwater for reverse osmosis desalination. Test parameters were elinimation of particulates and microbes in order to improve reverse osmosis performance, lower operating cost and increase mebrane life. Membrane treatment found to be l...

The paper described the evaluations done prior to the decision to integratae a membrane process into the exisiting potable water infratructure at WCID 18 in Austin TX...

This paper is to presents an overview of the mechanism of fouling of surface seawater reverse osmosis (RO) membrane units. It alsocprovides insights on potential limitations of conventional pretreatment of seawater reverse osmosis units....

An international look of seawater reverse osmois pretreatment applications. The issues of membrane scaling and fouling are addressed as well as insight on the need for further research on the efficacy of microfiltration and ultrafiltration for pretreatment....

This paper will document the complimentary use of three techniques (permeate throttling, inter-stage boost, hybrid array) in a single system to treat a brackish ground water with a Total Dissolved Solids (TDS) >12,000 mg/l at 70% recovery....

The purpose of this paper is to establish a database in 2004 of operational conditions for various membrane facilities based on raw water qualities, membrane type, and geographic location. This paper will include survey results from membrane facilities throughout the country regarding operation and maintenance practices....

A report on the pilot study to utilize low pressure reverse osmosis to remove water high in hardness and nitrates....

This paper presents the field and laboratory analytical data from the pilot testing of the UF and RO membrane technologies conducted at the Lee/Hendry County Landfill. The paper will also address the design considerations in implementing both systems effectively...

This paper will present the results of the reverse osmosis membrane plant pilot studies conducted from March through November 2003 at the Irvine Desalter project in California....

This paper compares membrane treatment to conventional treatment in municipal and industrial applications....

The presentation will address the results of pilot and bench scale tests and the application of a Nanofiltration retention model for trace organic compounds. ....

In this paper a new dimension is given to the concept of membrane fouling. In the already known fouling mechanisms for dead-end operated capillary ultra-filtration membranes fouling is considered a radial phenomenon (pore blocking, cake filtration). However, fouling also appears to have longitudinal effects....

This paper will review several commercial operations and recent pilot plant test results and economics for the use of hollow-fiber ultrafiltration membranes for pretreatment to spiral RO brackish water and seawater desalination systems...

This paper describes how nanostructures can be designed for the separation and extraction of specific molecules such as nitrates and water-borne pathogens such as viruses for wastewater reclamation....

A case study on the preliminary investigations into the replacing an regulatory obsolete 20 million gallons per day treatment plant with reverse osmosis....

This paper will outline initial public outreach efforts in Corpus Christi Texas, lessons learned, public concerns associated with locating desalination facilities on North Padre Island, a barrier island, and a proactive public involvement plan for carrying out project implementation...

Overview of desalination water treatment plant residuals and their alternatives for disposal. Environmental and regulatory issues are offered as well as insight on the environmental impact study process needed to permit many facilities....

The purpose of this paper is to provide description of the Carlsbad pilot desalination plant and to discuss pretreatment system and RO facility performance under various testing conditions....

This paper discusses this newly developed energy recovery device as it is applied at the Southmost facility. Further, the use of this device in water treatment applications other that reverse osmosis such as nanofiltration and pressure MF/UF systems is presented....

This paper presents the results of the analysis of alternative membrane plant design approaches to meeting three water quality specifications. This document provides meaningful guidance regarding the differences in design alternatives and costs to meet differing water quality goals. It also provides updated feasibility level cost estimates for two ...

Presentation of the use of surface water discharges as a means of disposing of membrane water treatment concentrate in Florida. Data is presented that verifies that surface water discharges are a leading alternative in Florida. The economic benefits are noted as well as current permitting procedures to establish regulatory acceptance....

An account is provided of performance testing conducted to evaluate media filtration and ultrafiltration pretreatment for seawater systems with mixed source waters. Media filtration was found to be effective in limited applications and source water dependent. Ultrafiltration determined to present various operational issues but did provide added p...

Feasibility study results on various methods of reverse osmosis concentrate disposal for a water treatment facility to be located on North Padre Island, Texas. Alternative disposal options investigated included surface water disposal, evaporation ponds, disposal to the wastewater treatment plant and deep well injection....

This paper explains how membrane systems, such as ultrafiltration, can be used to develop water resources. It is especially applicable to border communities, small communities in Texas and the southwest, and communities with surface water sources that have wide fluctuations in turbidity....

Roundtable discussion on the research conducted by the Texas Water Development Board relating to permitting of desalination facilities, desalination of produced water and concentrate disposal....

Update on the actions taken by the Texas Water Development Board into the feasibility of desalination facilities....

Report on testing performed on various enhanced evaporation systems to minimize environmental impacts to the Salton Sea from increased salinity....

An briefing on the purpose, function and imprtance of well designed and operated membrane process pretreatment systems if offered. The potential consequences of membrane failures, scaling and fouling are reviewed....

Briefing on the use of deep well injection to a confined geological formation to dispose of membrane water treatment concentrate. Current regulations are reviewed as well as related engineering issues and costs associated....

This PowerPoint presentation discusses why Stainless steel is needed for Sea Water Desalination facilities and the properties that are desirebale to minimize corrosion...