Headworks and Biosolids

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Removes small inorganics

The JDV Grit Classifier from JDV Equipment is a low-maintenance system with high-efficiency features to handle flows up to 800 gpm. It removes small inorganic items to avoid downtime and maintenance/repairs from premature failure of pumps and other equipment. The unit traps the materials and delivers them dewatered for proper disposal. An optional hydrocyclone increases capacity. 937/366-6556; www.jdvequipment.com.

 

Improved belt press

The Sentry three-belt press from Charter Machine Co. is engineered to handle high flows with thin feed concentrations while providing maximum cake dryness. The center pivot design improves belt alignment by adjusting both sides of the belt simultaneously, promoting even stretching over the entire belt length and providing consistent performance. The design also allows independent speed control. The low-gravity zone, high discharge, tubular steel frame, open design, and pneumatic operation all allow easy viewing, operation and maintenance. 732/494-5350; www.chartermachinecompany.com.

 

Converts FOG into biodiesel

The FOG-to-Fuel system from BlackGold Biofuels converts fats, oils and greases into biodiesel, transforming a liability into a renewable asset. The automated system is a compact, skid-mounted unit that integrates into a wastewater treatment plant footprint and can be operated by plant personnel. Incoming FOG-laden wastewater from grease traps, clarifiers, DAF tanks or vacuum trucks is separated into solids, water and dry FOG. The dry FOG is chemically converted into biofuel and purified, producing biodiesel, glycerin (a carbon source for denitrification) and biobunker fuel (a residual fuel oil). 215/253-5844; www.blackgoldbiofuels.com.

 

Variety of filters

Forsta Filters has released 13 new 90 Series filters, increasing capacity to include pipe sizes up to 10 inches and flow rates up to 2,400 gpm. The compact design offers an easy-to-install configuration and an automatic backwash cycle with minimal waste. Stainless steel construction provides durability for long life. 888/936-7782; www.forstafilters.com.

 

High-voltage disintegration system

The BioCrack high-voltage disintegration system from Vogelsang has a two-part sludge conditioning process. The solids are mechanically reduced by a Vogelsang RotaCut inline macerator. A Vogelsang rotary lobe pump moves the macerated sludge into a piping array that contains a series of high-voltage, low-wattage electrodes.

 

The electric field created by the electrodes bursts the cells that compose the sludge. Bacteria then are better exposed to the nutrients and liquid within the cell structure. The results are more gas is created and more liquid is released, reducing the solids content at the end of the process. 800/984-9400; www.vogelsangusa.com.

 

Packaged headworks plants

Hi-Tech Environmental offers a complete line of packaged headworks plants. All major components are made of 304 stainless steel for long life. Each system is fully shop-assembled and test-run, then shipped partially assembled for quick and easy installation. Standard features include screening, grit collection, screenings washing, shaftless flighting, segmented replaceable screen brushes, and weather protection. Units are provided in a self-contained stainless steel tank with flanged inlet and outlet. 800/264-7005; www.hi-techenv.com.

 

Containing mist and spray

The EcoMask from Aerator Solutions is a fiberglass cover used to control and contain mist and spray from the pumping action of aerators. The hooded dome controls water discharge and directs the water back into the bulk liquid, minimizing mist and retaining heat.

 

The device is used for applications that require continuous aeration during cold weather but may be limited by an inadequate heat sink due to process selection or environmental conditions. It also controls odors where the wind may carry the mist and smell to surrounding areas. The dome is mounted to the diffusion head of EcoJet aerators and can be purchased with the original order or as a retrofit. 815/623-5111; www.aeratorsolutions.com.

 

Grit slurry treatment

The Grit Classifier from Schreiber washes and dewaters grit slurry from grit removal systems, enabling easy handling and transferring of grit for disposal. It is effective over a wide range of grit particle sizes. The slurry is transferred to the grit classifier, where the inlet flow is directed downward. The grit settles into the bottom of the hopper. A shaftless screw rotates, lifting the grit from the bottom of the hopper up the trough, further washing and dewatering the grit.

 

The decanted water flows over a weir and returns to the waste stream, and the dewatered grit is discharged into a container. The system is fully enclosed and is made of 304 stainless steel for long life and corrosion protection. A hardened steel shaftless screw provides durability and requires no submerged bearing. The device is available in 12-inch diameter for flows up to 150 gpm, and 20-inch diameter for flows up to 300 gpm. 205/655-7466; www.schreiberwater.com.

 

Thorough screening

The Pre-Membrane Rotomesh Screen from Parkson Corp. does not allow stringy material or other types of solids to line up with screen openings and pass through. The system is available with 1-mm and 2-mm perforated plates and up to 6,500 gpm flow capacity. 888/727-5766; www.parkson.com.

 

Filter press enhancement

The Performance Optimization Rebuild Program from Ashbrook Simon-Hartley is designed to enhance filter press capabilities, increasing the dry solids content or to reduce operation and maintenance costs. The company provides the program for any make or model of belt filter press. The program uses only Ashbrook-certified parts, and a new equipment warranty is offered on complete rebuilds. 800/362-9041; www.as-h.com.

 

Septage plant

The Raptor Septage Acceptance Plant and Raptor Septage Complete Plant from Lakeside Equipment Corp. remove debris and inorganic solids from sludges. The heavy-duty machines incorporate the Raptor fine screen for screening, dewatering and compaction. Accessories include grit and rock removal, security access, and automated accounting systems. With the addition of aerated grit removal, the Septage Acceptance Plant is offered as the Raptor Septage Complete Plant (a slight variation of the Raptor Complete Plant). 630/837-5640; www.lakeside-equipment.com.

 

Self-cleaning fine screen

Using a reliable blade and drive system, the CleanFlo Monoscreen from WesTech Engineering is a self-cleaning fine screen that creates a progressive step motion, allowing screenings to be evenly distributed while minimizing water level surges. The result is a screening capture ratio of 82.5 percent. When matched with the company’s CleanWash SWP/CPS dewatering unit, the system maximizes the solids capture rate for almost any headworks operation while minimizing the amount of solids for disposal. 801/265-1000; www.westech-inc.com.

 

Mobile packaged plant

Mobile packaged plant containers from WSI International can be made stationary, as well. Sizes range from 5,000 to 50,000 gpd. The product includes an EQ tank, anoxic and aerobic bio-chip reactors, DAF unit, control unit, aerobic digester, WSI’s fiber ball filter or ultrafiltration membranes, and chemical station. Secondary treatment effluent meets discharge limits of 10/10/10 mg/L (BOD5/TSS/TN). As an option, an onsite sludge dewatering box can be provided to dewater onsite to meet U.S. EPA Class B sludge guidelines. 303/985-0885; www.wsi-llc.com.

 

Real-time odor monitoring

The OdoWatch 3.0 system from Kruger is an enhancement to the OdoWatch real-time odor monitoring system that helps wastewater treatment plants prevent odors before they become a problem. Benefits include AERMOD modeling that follows the odor plume over terrain, allowing plants to track odors more efficiently.

 

The odor plume shows the separate odor contribution from each monitored source, enabling diagnosis and quick action on odor problems. The system saves time and money on odor management and capital planning. It also allows for addition of the OdoSulf monitoring, which enables separate monitoring of hydrogen sulfide emissions. 919/677-8310; www.krugerusa.com.

 

Used in dewatering of biosolids

The Rotary Press from Fournier Industries dewaters biosolids using filtering elements that can run constantly in the absence of wash water, with a feed system that automatically compensates for changes in influent feed solids. Little or no operator supervision is needed. The machines are expandable from one to six modular dewatering units (channels) driven by a single, robust gear unit. They can be sized for today’s flows and expanded as the need increases. 418/423-4241; www.rotary-press.com.



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