Pilot and bench-scale studies are usually, but not always, conducted in the field. Sometimes they are performed at one of our facilities where operating conditions are duplicated using real raw water samples from the customer's site.
We offer pilot and bench-scale studies for almost all of our technologies, including:
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activated sludge
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adsorption clarifiers
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belt filter presses
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carbon adsorption
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centrifuges
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clarifiers
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continuous deionization
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CPI separators
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dissolved air/gas flotation separation/thickening
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filter presses
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GAC fluid bed biological system
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gravity belt thickeners
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induced air/gas flotation
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ion exchange
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media filtration
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metals precipitation/chelate breaking
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microfiltration
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microstrainers
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oxidation (ozone/UV/peroxide, etc.)
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powdered activated carbon treatment systems
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precipitation, flocculation, settling
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reactor clarifiers
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reactors
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reverse osmosis
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rotating biological contactors (RBCs)
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scrubbers
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sequencing batch reactors (SBRs)
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sludge blanket clarifiers
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sludge dryers
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submerged biological contactors (SBCs)
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walnut shell filtration
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wet air oxidation
Following are some examples of how these studies are helping customers choose the right system.
Case Study - Microfiltration
In 1992, the Orange County, California, Water District began testing the benefits of continuous microfiltration (CMF) as pretreatment to reverse osmosis with a CMF pilot system from our Memcor Products team. In 1997, the District commissioned a submerged continuous microfiltration (CMF-S) pilot unit from Memcor Products.
Cumulative data showed that both the CMF and CMF-S systems produced disinfected, microfiltered wastewater that reliably satisfied all requirements for nonpotable reuse. The data also showed that microfiltration provided exceptional pretreatment for RO for indirect potable reuse.
Case Study - Membrane Bioreactor
In King County, Washington, water reuse is necessary to protect fresh water supplies. Reclaimed water from a trailer-mounted MemJet™ immersed MBR pilot system from our Memcor Products team was used to irrigate demonstration gardens planted with vegetation by a local nursery. The MemJet system significantly reduced influent BOD, COD, TSS, ammonia and turbidity, and showed that the MemJet system can reliably and successfully treat wastewater for this application.
The concept of using satellite MBRs, which can tap into existing sewers to provide high-quality water for irrigation, was also successfully demonstrated.
Case Study - Wet Air Oxidation
A pilot study for a leading manufacturer of elemental phosphorus demonstrated the effectiveness of our hydrothermal processes including the Zimpro® wet air oxidation (WAO) process. Although elemental phosphorus is non-hazardous in final products, the production process creates byproducts that must be treated before disposal. WAO removes residual contaminants from the waste stream. The treated slurry is then dewatered with filter presses from our dewatering team. Dewatered solids are chemically stabilized to fix heavy metal contaminants prior to landfill.
“This pilot study was the largest we’ve ever done in terms of total project scope and the number of conditions examined,” says Rob Lawson, industrial sales manager for Siemens Water Technologies, Rothschild, WI. “The client’s managers visited our facilities during the study,” adds Lawson. “They were very pleased with our professionalism, the management of pilot operations, and the overall safety of the program.”
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