WASTEWATER FILTRATION WHITE PAPERS AND CASE STUDIES

Removing Iron From Groundwater
Removing Iron From Groundwater

In 2008 Texas was facing an extended drought and the City of San Angelo was weighing its alternatives. The City felt the Hickory Aquifer well field was the best water option available, but this water contained significant amounts of radium and iron.

  •  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.

Treatment Plant Upgrade Eases Operations And Increases Safety
Treatment Plant Upgrade Eases Operations And Increases Safety

Now in operation for well over two years in the Malambo, Colombia, the Microclor® system has proven itself in terms of reliability and safety. According to management, the clear, vertically-oriented cells and the system’s open architecture allow for easy inspection and simplify any minor maintenance that might be required.

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WASTEWATER FILTRATION PRODUCTS

SuperSettler™ Featuring The ZICKERT Shark™ SuperSettler™ Featuring The ZICKERT Shark™
The efficient design of the SuperSettler™ Lamella Plate Clarifier utilizes lamella plates and shallow depth sedimentation to minimize the clarifier footprint.
aquasource™ Z-XS: Ultrafiltration Membrane Systems aquasource™ Z-XS: Ultrafiltration Membrane Systems

aquasource Z-XS is a highly compact ultrafiltration unit able to adapt to your raw water source with its comprehensive yet easy-to-use automation. Featuring up to 4 membrane modules ZW700B, the aquasource Z-XS is a packaged unit that can produce up to 350 m3/day of clarified and sanitized water from surface, ground, city- or seawater.

AltaPac™ AltaPac™

The AltaPac™ Ultrafiltration Package System is designed as an economical ultrafiltration membrane treatment system that is both easy to use and simple to install. This versatile system can process flows up to 100 gpm on surface waters and 180 gpm on ground waters.

Service Deionization Service Deionization

Evoqua Service Deionization (SDI) is a safe, convenient and cost-effective supply of high-purity deionized (DI) water for a wide variety of applications, including boiler feedwater, laboratory water, ingredient water for pharmaceuticals, food and beverages, industrial processes, microelectronics manufacturing and many other applications — even spot-free rinse water for car washes.

Leopold® FilterWorx® Performance Filters Leopold® FilterWorx® Performance Filters

FilterWorx performance filters from Leopold are designed to achieve filtration cycles that meet your permit requirements. They are suited for applications such as potable drinking water treatment, tertiary wastewater treatment, nutrient removal in water or wastewater, pretreatment prior to low-pressure membrane systems, and RO membrane desalination pretreatment. Download the brochure to learn how the components can help you integrate a cost-effective, energy-efficient, high-performance filtration system.

On-Site Services On-Site Services

Do you need support at your system? Our qualified service technicians come to support you on-site.

Trickling Filters Trickling Filters

At Brentwood, trickling filters are often referred to as the “biological treatment workhorse.” Although the technology is simple, it has been time-tested and continues to work hard to offer a cost-effective, energy efficient treatment solution today. By optimizing surface area in a given volume and maintaining the structural integrity required for deep towers, Brentwood media provides an ideal environment for microorganism growth.

High Speed CSO Filtration System High Speed CSO Filtration System

As measures of improving the combined sewer system, this high rate filtration system filters the rain water, which flowed directly to the river before, by using our original filter media. This new treatment system can be installed in the existed facilities and supplies stable filtrations for rainfall flow fluctuation.

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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.