WASTEWATER FILTRATION WHITE PAPERS AND CASE STUDIES

TITAN MBR™ Ultrafiltration Provides Private Development Site With Water Reuse Capabilities
TITAN MBR™ Ultrafiltration Provides Private Development Site With Water Reuse Capabilities

When developers of a condominium complex sourced wastewater treatment systems, it did so with two primary requirements: efficient land utilization and high effluent quality to meet stringent guidelines. State regulators advised the developers to discuss combining its wastewater system with the owner’s association of an adjacent housing development, whose existing wastewater treatment system was aging and required augmentation.

  • City Saves Big Money By Using Cloth Media Filters To Treat CSO Discharge
    City Saves Big Money By Using Cloth Media Filters To Treat CSO Discharge

    The City of Rushville, Indiana had to remedy a consent order filed in 2007 for its untreated combined sewer overflow (CSO) discharges that were polluting the Flatrock River, a violation of the Clean Water Act. The city originally planned to install a 1 MGD stormwater storage tank, but was approached by Aqua-Aerobic representatives with a pilot test proposal utilizing a new technology.

  •  Filter Installations Remove Solids From FGD Scrubber Effluent
    Filter Installations Remove Solids From FGD Scrubber Effluent

    Power plants and refineries around the world must manage and treat complex effluent waste streams from the Flue Gas Desulfurization (FGD) process. Flue gas is generated by the combustion process of fossil and fossil-derived fuels, such as coal, oils, and natural gas in power plants. Petrochemical refineries may generate flue gas from a number of different processes, including Catalytic Cracking, Steam Methane Reforming, and Heaters or Furnaces.

  • The Role Of IoT And Control Technologies In Water Filtration Systems
    The Role Of IoT And Control Technologies In Water Filtration Systems

    Filtration and separation technologies are the core of water treatment processes, and in many cases, they can be critical process bottlenecks. 

  • Dual Parallel Lateral Filter Underdrains Selected To Replace Underperforming Nozzle Design At Mexico's Largest Drinking Water Treatment Plant
    Dual Parallel Lateral Filter Underdrains Selected To Replace Underperforming Nozzle Design At Mexico's Largest Drinking Water Treatment Plant

    Located about 78 miles (125 kilometers) west of Mexico City lies the municipality of Villa de Allende, home of Mexico’s largest potable water treatment plant. The Los Berros water treatment plant was constructed in 1980 by the National Water Commission (Conagua), an agency of the Mexican government that manages the nation’s drinking water and wastewater treatment. The plant provides 396.3 million gal/day (1.5 billion L/day) of water to the country’s capital city, equivalent to approximately 25 percent of the total water supply of the western hemisphere’s most populace metropolitan area.

  • World’s Largest Denitrification Plant Helps Tampa Bay Reduce Nutrient Pollution
    World’s Largest Denitrification Plant Helps Tampa Bay Reduce Nutrient Pollution

    Nutrient pollution is getting worse in many estuaries throughout the United States, especially those on the heavily populated East Coast.

  • On-Site Sodium Hypochlorite Generation Replaces Hazardous Cyanide In Precious Metal Extraction
    On-Site Sodium Hypochlorite Generation Replaces Hazardous Cyanide In Precious Metal Extraction

    The Baia Mare Aurul gold mine in North Western Romania suffered a historic catastrophe in January 2000, when its dam burst, streaming out 100,000 cubic meters of waste water, largely contaminated with cyanide, commonly used in the process of mining gold, into tributaries of the Tisza River, a major waterway in Hungary.

  • Denitrification Filters Meet Strict, Varying Nitrogen Limits
    Denitrification Filters Meet Strict, Varying Nitrogen Limits

    The cities of Littleton and Englewood, CO, just south of Denver, share a wastewater plant — the Littleton/Englewood advanced wastewater treatment (AWT) plant located in Englewood. The 7886 m3/hr (50-mgd) Littleton/Englewood AWT plant serves more than 300,000 residents in the Denver metropolitan area. The facility also receives sewage from 21 districts within a 75 square mile service area. Plant effluent is discharged to the Denver metro area’s major watershed, the South Platte River.

  • Award-Winning Design Helps WWTP Protect Chesapeake Bay Watershed
    Award-Winning Design Helps WWTP Protect Chesapeake Bay Watershed

    Arlington County’s Water Pollution Control Plant (WPCP) in South Arlington, VA, is located on 35 acres of land squeezed into a commercial/residential neighborhood less than a mile west of Ronald Reagan Washington National Airport. The facility treats flows from nearly all of Arlington. In addition, nearly 20 percent of the plant’s flow comes from neighboring localities such as Alexandria, Fairfax County, and Falls Church. Effluent from the plant is discharged into Four Mile Run to the south, which feeds into the Potomac River and, ultimately, the Chesapeake Bay.

  • Methanol Dosing Technology Helps Denitrification System Pass Rigorous Performance Test
    Methanol Dosing Technology Helps Denitrification System Pass Rigorous Performance Test

    In 2007, Greenville, SC-based Western Carolina Regional Sewer Authority (WCRSA) conducted a rigorous performance test on a new tertiary treatment technology to assess its ability to effectively remove nitrate-nitrogen (NO3-N) without using excess amounts of methanol at its Lower Reedy Wastewater Treatment Plant (WWTP).

  • Denitrification/Filtration Technology Helps Wastewater Treatment Plant Meet China’s Stringent Class 1A Standards
    Denitrification/Filtration Technology Helps Wastewater Treatment Plant Meet China’s Stringent Class 1A Standards

    As a result of China’s rapid economic development in recent years, the country has implemented more stringent environmental standards. Local environmental protection departments now require most urban wastewater treatment plants (WWTP) to apply strict enforcement measures to meet Class IA effluent discharge standards according to the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB18918-2002).

Improving The Quality Of Secondary Wastewater For Indirect Potable Reuse—From Pilot To Full Scale Plant
Improving The Quality Of Secondary Wastewater For Indirect Potable Reuse—From Pilot To Full Scale Plant

In spite of the recent abundance of water, many of California’s aquifers continue to balance on the edge of water scarcity. Decades of overpumping have reduced the amount of ground water available to supplement surface water resources diminished by drought. The Pure Water Monterey Ground Water Replenishment Project (Monterey Pure), addressed the need to replenish a local aquifer, by piloting Advanced Water Treatment (AWT) processes, to determine the best method to convert secondary wastewater into a pure water resource.

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WASTEWATER FILTRATION PRODUCTS

FiltraFast™ Extreme-Rate Compressible Media Filter FiltraFast™ Extreme-Rate Compressible Media Filter

FiltraFast™ is a high-rate downflow gravity or pressure filter that uses a unique compressible media. The filter only uses hydraulic loading to create the required media porosity without any mechanical compressing devices. A proprietary backwash sequence enables maximum recovery, extends media life, and limits energy consumption. This process 1) significantly reduces the footprint compared to sand filters, and 2) reduces maintenance and replacement costs required by disc filters, and other compressible media filters.

Modular HIT System™ Modular HIT System™

The MBBR/IFAS technology experts at Headworks have developed a smarter way to treat wastewater for reuse. The result is the Headworks Integrated Treatment (HIT™) System: a modular, compact wastewater treatment plant that uses proven moving bed biofilm technology to generate reuse quality water.   

Type 360 Underdrain Type 360 Underdrain

The Leopold brand has been delivering the most efficient and reliable filtration systems since 1922. With the new Leopold Type 360 Underdrain, we are adding a bolt down model to our underdrain family providing:

Vortisand® Filtration Systems for Membrane Pretreatment: Not Just Protection! Vortisand® Filtration Systems for Membrane Pretreatment: Not Just Protection!

The Vortisand filtration system is a high capacity media filter that combines cross-flow dynamics with microsand media to achieve submicron filtration performance; 10 to 50 times finer than other traditional media filters. Such high efficiency filtration systems provide various benefits in both pre and post membrane applications.

CeraQ™ Ceramic Filters For Water And Wastewater Treatment CeraQ™ Ceramic Filters For Water And Wastewater Treatment

QUA’s CeraQ™ ceramic membrane modules are designed for challenging water and wastewater applications. These filters are ideal for wastewater recycle or reuse applications in a wide range of industries such as upstream oil and gas, petrochemicals, refinery, food beverage, and textiles. A variety of different pore sizes provides great flexibility to users in designing treatment system for applications covering the filtration spectrum of micro- to ultrafiltration.

SureSafe™ Filter Cartridges SureSafe™ Filter Cartridges

SureSafe™ Filter Cartridges will inhibit the growth of Legionella on your filter cartridges. Silver has been used to help sanitize liquids for more than 4,000 years. Permanent Silver Zeolite fibers are used to manufacture HARMSCO® SureSafe™ Filtration Media which inhibits the growth of biofilms on and in the filtration media.

Increase Filtration Capacity and Performance with the Forty-X™ Disc Filter Increase Filtration Capacity and Performance with the Forty-X™ Disc Filter

Increase filtration capacity and performance in existing footprint.

MRI Inclined Plate Settlers MRI Inclined Plate Settlers

MRI Inclined Plate Settlers have proven to provide unsurpassed clarifier function. The unique, patented hydraulic Flow Control Deck distributes flow evenly across the entire system. This enables a consistent flow rate and low turbidity throughout the sedimentation process and produces high quality effluent with less than 1 NTU to meet/exceed regulations.

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WASTEWATER FILTRATION PODCASTS

Filtration For A New Era Filtration For A New Era

Filtration has been around for a long, long time, so it may be that most treatment plant operators feel pretty informed about its capabilities. But hearing from Brian Frewerd, Director of Application Engineering with Parkson Corporation and Water Talk guest, will likely prove enlightening. Frewerd provides background on sand filtration for tertiary treatment applications, followed by insight on notable technology improvements and performance milestones

A Fresh Look At Membrane Bioreactors A Fresh Look At Membrane Bioreactors

Membrane bioreactors (MBRs) are not new, but they are the subject of renewed interest among utilities, and for Carollo Engineers Vice President Andrew Gilmore. He sat down with Water Talk's Todd Schnick and Kevin Westerling to discuss the MBR renaissance and the reason for their rise in popularity.

From Australia To California, Log Reduction Credits For MBR Systems From Australia To California, Log Reduction Credits For MBR Systems

Jon Loveland, Global Practice Leader - Alternative Water Supply at Black & Veatch, shares insight on a major development for membrane bioreactor (MBR) systems and potable reuse.

Ozonia M and FiltraFast Provide New Options For Treatment Facilities Ozonia M and FiltraFast Provide New Options For Treatment Facilities

If you don’t need the performance of an ultrafiltration membrane but also want to avoid the large footprint of a conventional media filter, you might want to consider FiltraFast extreme rate compressible media filters. As Ryan Hess, Director of Advanced Separation with SUEZ Water Technologies suggests in this Water Talk interview, “They provide roughly ten times the hydraulic loading rate of conventional media filters.”

New Tools For Improving Membrane Bioreactors New Tools For Improving Membrane Bioreactors

Toray Membrane USA introduced an aptly-named product at WEFTEC 2017, the NHP (New High Performance) module for membrane bioreactors (MBRs). Toray's Peter Waldron sat down with Water Online to discuss how the NHP, which features thin membrane flat sheets densely packed into easily interchangeable cassettes, differs from current industry offerings and how these features benefit MBR operation.

De Nora Doubles Down On Innovation De Nora Doubles Down On Innovation

With 29 locations, 1,600 employees and research facilities in Japan, Italy and the United States, DeNora is one of the largest disinfection and filtration companies in the world. As Gary Lohse, Regional Sales Manager for De Nora, explains in this Water Online Radio interview, the acquisition of the former Severn Trent manufacturing division coupled with De Nora’s product innovation strength is driving enhancements to some of the most respected brands in the water industry.

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WASTEWATER FILTRATION VIDEO

TITAN MBR™: The Most Operator-Friendly Way to Achieve Water Reuse TITAN MBR™: The Most Operator-Friendly Way to Achieve Water Reuse

Delivering the best MBR experience, Smith & Loveless announces the new TITAN MBR™.

An Underdrain Like No Other An Underdrain Like No Other

Matt Shoemaker, North American Sales Manager for Leopold -- A Xylem Brand, talks through the features of the Type 360 Underdrain, a bolt-down system with a design that allows for longer filter runs, higher efficiency, less backwash water, and extended media life. With a flow concept that avoids dead zones and patented self-cleaning capabilities, the Type 360 is easy to own and operate. Get a close look and hear more about its unique properties in this video.

Leopold Type 360 Underdrain: Video Leopold Type 360 Underdrain: Video

The Leopold brand of Xylem has been providing the most efficient water and wastewater treatment filtration systems available since 1922. The Leopold difference – effectively backwashing 100 percent of the media.

Stokes' Law and How Inclined Plate Settlers (Lamellas) Work Stokes' Law and How Inclined Plate Settlers (Lamellas) Work

In this video, we discuss the curious science that is the inclined plate settler (also known as a Lamella). The process is a bit counter-intuitive, but through an interesting experiment, this video shows how they work. Inclined plate settlers can reduce required footprint by 80% compared to traditional gravity settling.

DE NORA TETRA: Trusted Filtration Technologies DE NORA TETRA: Trusted Filtration Technologies

De Nora brings a long history of innovation to familiar water treatment technologies like DE NORA TETRA filtration products. For more than 55 years, De Nora has been providing filtration process expertise and global innovation with DE NORA TETRATM Denite® denitrification systems, DeepBed™ tertiary AWT filters, underdrains for water and wastewater treatment, and submerged aerated biological filters.

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WASTEWATER FILTRATION NEWS

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ABOUT WASTEWATER FILTRATION

Wastewater filtration is often part of the tertiary treatment process that involves the final removal of suspended particles from water that has passed through both the primary and secondary treatment phases and immediately precedes disinfection. As the water passes through the filter, residual suspended material and bacteria is trapped in the filter and are removed from the filtered water. Passage can be blocked by physical obstruction, biological action, adsorption, absorption or a combination of ways. Wastewater filtration is usually the final step in the solids removal process.

With regulations increasing around wastewater effluent, the use of ultrafiltration and microfiltration systems in further polishing effluent has grown. Sand or activated carbon filters can provide a media for bacterial decomposition of nutrients, converting nitrates into nitrogen gas. The rise of water reuse applications is also fueling the increasing use of filters during the final polishing stages of the wastewater treatment process.