Traditional municipal wastewater treatment plants typically rely on conventional tests such as Total Suspended Solids (TSS) and possibly Volatile Suspended Solids (VSS) to attempt to quantify biomass.
Built in the 1980s, Little Blue Valley Sewer District operates Atherton, which was designed to reduce the primary process chain to preliminary bar screening and aerated grit removal, while relying solely on secondary treatment performed in four, standalone 42-ft by 400-ft aeration/clarification basins. Read the full case study to learn how upgrading the activated sludge process with a combination of Xylem’s Flygt pumps and mixers created a solution for the city’s sewer district.
For years, the wastewater treatment plant in Villa Mercedes, David City, Panama emitted harsh odors and created a rampant mosquito population, a situation the neighboring residents found impossible to deal with. Treatment at the plant needed improvement to successfully treat up to 4.6 million gallons of wastewater per day, eliminate harsh odors and reduce the mosquito population.
A WWTP chooses a new screw press that takes up less than half the space that the old belt press had occupied. This was striking for the operations team but not as striking as the fraction of time they needed to spend managing the screw press.
As interest in biogas grows, more attention is being paid to measuring biogas flow, which has long been a problem area in process measuring technology.
Greer Commission of Public Works (CPW) has been providing water, wastewater and electric services to the City since 1914 with natural gas service added in 1957.
The City of Dixon, Illinois, located 100 miles west of Chicago, went on-line with an upgraded 4.5 MGD wastewater treatment plant in February 2002.
Located between San Francisco and Sacramento in Solano County, California, the Fairfield-Suisun Sewer District (FSSD) services more than 135,000 residential, commercial and industrial customers over 41 square miles.
The 1.5 MGD West Carrollton Wastewater Treatment Plant in West Carrollton, OH came on-line in 1989 and today serves 12,000 area residents. The activated sludge facility produces an average of 200 wet tons/month of sludge that, following belt filter press dewatering, is spread on area farmland by a biosolids management company.
Serving over 200,000 ratepayers, the City of Tacoma operates two award-winning wastewater treatment plants.
The City of Dartmouth, MA, Water Pollution Control Division is responsible for operating the town’s 3 million gallon per day wastewater treatment facility, a testing laboratory, a composting site, a sludge.
City of Tooele needed to reduce sludge volume that would produce reusable material, be simple to maintain, and provide cost effective operation. The Huber Technology SRT Solar Dryer was determined to be a technology fit to achieve Tooele’s goals. The linear feed design of the SRT Solar Dryer provided the ability to feed dewatered sludge to the dryer as it was produced. Read the full case study to learn more about their installation.
This revolutionary aerobic wastewater treatment solution is modular and reduces energy usage by up to 90% compared to conventional treatment.
The Reliant Water Technologies SCOUT Hydro Profiling System is the answer to obtaining clear and concise shallow water survey data quickly and inexpensively. By not only providing a visual hydrographic ‘picture’ of everything underwater, in any shallow body of water, the SCOUT also provides the volume of sludge in the water body (as well as the volume of free water). The ‘picture’ provided is color enhanced in order to provide clear, definitive delineation of variable depths of sludge, or debris, and includes multi-point water depth over-lays.
The AquaPrime system utilizes a disk configuration and the exclusive OptiFiber® cloth filtration media to effectively filter screened, de-gritted, raw municipal sewage. This proven technology easily handles significantly higher solids loading rates compared to secondary clarified effluent (by a factor of 3 to 5 times) with the added ability to sustain a low TSS concentration, making it an ideal solution for both wet weather treatment and primary treatment in lieu of conventional sedimentation systems.
The IFT Rotary Drum Sludge Thickener offers best in class performance for achieving 5-15% solids for municipal wastewater sludge. JWC’s Rotary Drum Thickener almost exclusively utilizes woven wire mesh screening panels for the construction of the drum. This allows for capture rates in excess of 98% and a much lower polymer use compared to systems using perforated plates or wedgewire drums. The wire mesh screening media is built into removable panels that are installed on a drum frame. This allows for a simple exchange of screening panels if they are damaged or conditions change without having to acquire a full drum.
From waste to wealth
More and more wastewater treatment plants are trying to find ways to reuse their valuable sludge through anaerobic digestion as well as lower their overall carbon footprint. With our recent acquisition of IPEC we now have world class solutions to meet your sludge thickening needs.
BioCon is a dual-belt dryer designed to be one of the safest dryers on the market while maintaining easy and efficient operations. In much the same way a convection oven speeds up the baking process in the kitchen, BioCon uses hot air circulation to evaporate the water from the biosolids.
Veolia developed Bio Thelys™ and EXELYS™, two innovative solutions that combine thermal hydrolysis with anaerobic digestion. With multiple configurations, Veolia provides a customized thermal hydrolysis process meeting each plant's needs.
Evoqua Water Technologies is the leader in Upgrade and Retrofit Solutions for refurbishing wastewater plant equipment and improving operating performance. Experienced technical experts can provide thorough evaluations to determine the most cost-effective options, and draw upon a library of original equipment drawings to speed project execution and lower costs. Evoqua’s installation base dates back more than 100 years.
Dennis Kaeser, Technical Sales Manager Chain and Scraper for Evoqua, provides an overview of some of the replacement chain and scraper products the Company offers with a particular focus on ease-of-replacement and operator safety.
Kevin Westerling interviews Mark Pamperin, a biological processes product manager with Evoqua, about retrofitting and rehab systems for wastewater treatment plants. Their discussion touches on circular clarifiers, anaerobic digestion, brush aerators, chain and scrapers, RBC systems and diffused aeration.
Peter Bugg, Director of Innovation for Ovivo discusses some of the Company’s latest solutions for biosolids including the BioAlganyx and BioLenz products with Bill King at WEFTEC 2016.
Heliantis™ transforms any type of dewatered sludge (15% minimum dry content) into a dry, granulated product with a dry-solids content that can be adjusted within a range of 35% to 85%. Using the sun as the main energy source, the sludge is dried in a greenhouse and a scarifying machine turns over and breaks up the sludge into carbon-neutral and odorless granules, for eventual agricultural reuse or thermal energy production using co-incineration.
Ovivo, a worldwide leader in providing advanced water and wastewater treatment solutions, in partnership with the University of Akron, has developed BioAlgaNyx™, a bioengineered algae based technology for wastewater and sludge management.
