WASTEWATER FILTRATION ARTICLESMore From Wastewater Filtration Articles
WASTEWATER FILTRATION WHITE PAPERS AND CASE STUDIES
Water reuse efforts in the West Coast are a priority and have the Ground Water Replenishing System (GWRS) of the Orange County Water District (OCWD) utilizing new technologies for water conservation.
AnoxKaldnes Hybas™: Meeting New Limits
In 2008, AnoxKaldnes Hybas™ designs were completed by Veolia for the upgrade of the Field’s Point Wastewater Treatment Facility to meet new seasonal effluent limits for TN and TIN.
Pilot Studies In North Carolina With Hydrex™ Odor Solutions
Two municipalities were faced with odor issues and required corrosion prevention in their collection systems. Monitoring in the sewer lines indicated peak H2S atmospheric concentrations of 300-500 ppm. Both clients desired H2S < 20 mg/L to prevent corrosion and preferably lower to prevent H2S odor.
Two AquaDisk Cloth Media Filters Replace Six Granular Media Units, Boosting Capacity 540% And Cutting Backwash Volume By 97%
The Portland, Indiana, Wastewater Treatment Plant (WWTP) had been using six granular-media filter units for tertiary treatment since the 1980s. The plant’s treatment protocol includes fine screens for grit removal, followed by primary clarifiers, trickling filters, aeration basins, secondary clarifiers, the tertiary treatment system, and then chlorine disinfection.
Floating Cabins In B.C. Canada
British Columbia’s fly-in recreational fishing lodge industry was threatened by federal regulators to be closed or fined up to $200,000 unless the sewage wastewater was treated. NOMADIC™ kept them open and operating.
Trinity River Authority Increases Filtration Capacity And Decreases Backwash With AquaDiamond® Cloth Media Filters By Aqua-Aerobic Systems
The Trinity River Authority (TRA) of Texas established its Central Regional Wastewater System (CRWS) in 1957 and began operations in December 1959.
Paper Facility Increases Efficiency With Filter Rehabilitation
NewPage operates eight paper mills in the United States. The Biron mill located in Wisconsin Rapids, Wisconsin produces approximately 370,000 tons of paper each year.
Bubble Removal From Aqueous Streams Using SuperPhobic® Membrane Contactors
Many manufacturing processes, analytical measurements, and other industrial processes and procedures that involve aqueous based solutions, are adversely affected by bubbles in the fluid stream.
Using ‘TransMembraneChemiSorption’ (TMCS) For Ammonia Removal From Industrial Waste Waters
Dissolved gases like NH3, H2S or NOx in waste water lead to contamination in the sewage system and high treatment costs for municipal waste water treatment plants.
Using Membrane Contactor Technology To Extend Resin Bed Life
In today’s economic environment when profits are reduced due to rising costs, it is necessary to find ways to save time and money.
Clarification System Boosts Capacity, Reduces Maintenance
Spikes in peak demand at the 3.0 MGD Freedom District Water Treatment Plant in Carroll County, MD, exceeded 70 percent of the plant’s capacity, and the existing clarifier made for a lengthy sludge-removal process. After staff installed a dissolved air flotation (DAF) pretreatment system to improve the efficiency of the membrane filters, the now 4.0 MGD facility has reduced maintenance for operators. The system also safeguards against pathogens that can pass through traditional sand/diatomaceous (S/D) filters.
The NEOSEP® MBR system features Kruger’s uniquely designed K-120C and K-240C flat sheet membrane modules. The modules offer several innovative design features that enhance ease of installation, operation and maintenance. This includes an integrated central lifting eye, offering an incredibly well balanced module that makes installation and retrieval a simple and stress-free process.
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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.