Heat transfer

The Hydroheater from Hydro-Thermal Corp. is a direct steam injection heat transfer device for pre-heating or recirculation of biosolids. It optimizes digester efficiency by maintaining a tight temperature band, thus increasing biological activity and solids reduction. It is designed for liquid heating processes in which fouling is a concern.

With a self-cleaning design, the unit prevents plugging, fouling and scale buildup. Other benefits include: instantaneous transfer of heat from steam to liquid, precise temperature control to within 0.5 degrees F, reduced bacteria and energy usage, reduced maintenance, and no ancillary discharge. 262/548-8900; www.hydro-thermal.com.

Drain outlet

Assmann Corporation of America offers the Full Drain Outlet (FDO) assembly for tanks 2,500 gallons and larger. The outlet lets users drain the tank without mechanically installed nozzles and can be used where heavy solids or salts may accumulate in the bottom of the tank.

The device can help eliminate difficult maintenance, stands up to virtually any service condition and is available with multiple expansion joint options. The outlet is available in 3- and 4-inch sizes and in 316 stainless steel, titanium and hastelloy construction. A replaceable polyethylene flange allows the adapter to be removed for tank installation. 888/357-3181; www.assmann-usa.com.

Blower package

The 50-100 hp IQ blower package from Gardner Denver delivers pressure to 15 psig, vacuum to 16 inches Hg, and airflow from 200 to 1,400 cfm. The design reduces sound levels by as much as 20 dBA. Intelligent digital monitoring is standard with the AirSmart controller. The product has an integrated, full-voltage starter or optional variable-frequency drive for efficiency. A removable discharge silencer provides package integrity and end-user flexibility. 800/682-9868; www.iqblower.com.

Field-erected tankage

Smith & Loveless offers the pre-engineered TITAN MBR System of field-erected tankage for large-volume MBR treatment, delivering up to 3 mgd per tank. Submerged in the aeration section of the unit’s rounded tank, the S&L Flat-Plate Membrane maintains high permeability and flux rates even at peak day rates. Because the system uses air scouring to prevent fouling, it does not require back-pulsing. It comes in standard and custom designs and in flow capacities from 5,000 gpd to 3 mgd and larger. The system meets effluent requirements of less than 3 mg/l BOD, 1 mg/l TSS, 2 mg/l TKN, and 1 mg/l NH3. 913/888-5201; www.smithandloveless.com.

Air stripper

The BREEZE VOC removal system from Aeromix Systems is a compact, low-maintenance air stripper that can remove nearly 100 percent of volatile organic compounds (VOCs) and other gases dissolved in water. The unit works as a stand-alone system or with other treatment technologies. Single units handle flow rates up to 200 gpm. 800/879-3677; www.aeromix.com.

Steel tanks

Aquastore offers glass-fused-to-steel wastewater tanks in which each steel panel is permanently fused with silica glass coating at 1,500 degrees F in a factory-controlled furnace to create an inert bond that contains corrosive liquids and gases with minimal maintenance. Tanks require no repainting over their life cycle. They are available in capacities up to more than 6 million gallons. 503/678-2533; www.aquastore.com.

Membrane diffusers

Stamford Scientific International offers PTFE (polytetrafluoro ethylene) layered EPDM disc and tube diffuser membranes. PTFE membranes have shown high resilience in aggressive applications. 845/454-8171; www.stamfordscientific.com.

Mixing system

The PPC-3101 mixing system from Pulsair includes 104 stainless steel accumulator plates attached to the floor of each basin, plus 26 injection valves in five pre-plumbed cabinets located around the outside of the basin perimeter.

A PLC-based controller and custom software operate each mixing system. The Pulsair process sequentially introduces compressed air under the accumulator plates, creating large single bubbles. The bubbles keep the solids in suspension and evenly distributed throughout the liquid. Maintenance is reduced because there are no pumps, rotating seals or other moving parts in the tank. 800/582-7797; www.pulsair.com.

Bolted steel tanks

Bolted stainless steel tanks from American Structures offer a long-lasting waste storage solution. Stainless steel helps ensure long life with minimal maintenance. Specially designed parts ensure durability. 715/235-4225; www.ameristruc.com.

Coating system

The RTP (rolled, tapered panel) storage containment system from Tank Connection has an LIQ Fusion 7000 FBE coating system that is NSF 61 approved. The system is field installed from grade level using a special synchronized jacking system. RTP construction is available in bolted tank sizes up to 10 million gallons. 620/423-3010; www.tankconnection.com.


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