Jan 02, 2013· SuperSand™ Continuous Backwash Sand Filter – WesTech . The SuperSand™ Continuous Backwash Sand Filter is an upflow, . located at the center of the module, . A plant can be designed for a virtually unlimited . »More detailed
Backwash and flow rate statistics are given below for many of the media most commonly used in backwashing filters. This is information you should have if you're considering a backwashing filter. The difficulty in sizing backwashing filters is that most filter media require a significantly higher backwash flow than the service flow they support.
Jan 29, 2013· The SuperSand continuous backwash sand filter is an upflow moving bed filter that is constructed with various media depths for different applications and configurations. Raw water enters near the bottom of the tank by way of a stainless steel water distributor. Suspended solids are filtered out as the water flows up
Continuous (moving bed) Backwash Very forgiving to process upsets. DynaSand®Filter Upflow Design –Filtrate leaves the media from the top. Air lift pumps media to Washer at top of filter provides constant air scour. Head differential in Washer assembly provides constant backwash with filtrate.
The sand filter effluent drained into the pump vault in the center of the sand filter, which then pressure dosed two shallow soil trenches constructed with chambers. The system v/as installed in October 1995, and the performance v/as monitored for 15 months.
Backwash Cleaning. The core principle behind back washing, when automated, is that the filters are designed to initiate a backwash sequence when the differential pressure reaches its set point. The flow of liquid is reversed, dislodging the debris that has built up on the surface of the filter media.
• Continuous Backwash Sand Filters • Disc Filters • Ultra Filtration Systems • Coated Media Filters • Monolithic Floor Filter Systems, Underflow Drains, Strainers . Disinfection • UV Disinfection • Tablet Chlorination / Dechlorination . Package Plants • Conventional Water Treatment • Membrane Ultra Filtration Systems
PDF | Pilot testing of upflow continuous backwash filter (UCB) for tertiary denitrification and phosphorus removal was conducted at the Hagerstown wastewater treatment plant. The .
The SuperSand™ Continuous Backwash Sand Filter is an upflow, moving bed filter that is constructed with various media depths for different applications and configurations. Raw water enters near the bottom of the tank by means of a stainless steel .
In 2003, the plant began experiencing problems with the sand filters initiating continuous backwash mode when flows exceeded 6 million gal per day (mgd), or 3 gpm/ft?, significantly less than the rated capacity. To remedy the problem, plant operators were bypassing a portion of the flow.
OPTIMUM EXPANSION OF SAND FILTERS DURING BACKWASH. Iowa State University,, 1971 Engineering, sanitaiy and municipal University Microfilms, A XEROX Company, Ann Arbor, Michigan THIS DISSERTATION HAS BEEN MCROFILMED EXACTLY AS RECEIVED
Diatomaceous earth filters are backwashed according to the proprietary arrangement of pumps, valves and filters associated with the filtration system. Slow sand filters and selfcleaning screen filters employ mechanisms other than backwashing to remove trapped particles. To keep water treatment filters functional, they have to be cleaned ...
The Pool Filter System is designed to use special silica sand to remove dirt particles from pool water. Filter sand is loaded into the filter tank and functions as a permanent dirt and debris removing medium.
Select the desired time for backwashing each tank. Recommend 2 minutes as starting point. Manual Start Switch Press this button to initiate a backwash cycle for all tanks in a system. Upon completion, the Backwash Frequency setting will begin a new countdown to another backwash cycle .
The backwash rate should be adjustable if not variable. While it may never be used, it is good prac tice to design for a maximum of 20 gallons per minute per square foot of filter area. For rapidrate pressure filters, the backwash rate should be at least 15 gallons per minute per square foot of filter area.