Headworks and Biosolids

Headworks and Biosolids
Monafil biofiltration system from Anua

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Biofiltration system

The Monafil biofiltration system from Anua uses peat media as a capture and support medium that offers high removal efficiencies for odors, VOCs, sulfur and nitrogen-based compounds. The granular high-density media can achieve high removal via high porosity, good water retention, high cation exchange capacity and large surface area.

The system achieves greater than 99 percent removal of H2S and greater than 95 percent OU/m3 depending on the application. It resists breakdown with media life up to 10 years. The deeper media (up to 10 feet) allows for a reduced footprint. No chemical or nutrient addition necessary. The media can be graded at the time of replacement and up to 50 percent can be recycled and reused. 800/787-2356; www.anua-us.com.


Filter press technology

Klampress belt filter press technology from Ashbrook Simon-Hartley is adaptable to the full range of sludge types. The technology incorporates multi-zone dewatering, including a conditioning zone, gravity dewatering zone, adjustable wedge zone (also adjustable during operation), radial dewatering zone, and full pressure zone. Depending on sludge characteristics, the press is configured with expanded pressure zones, with an integral gravity belt thickener, as a high solids unit or with a combination of these options.

The unit can also be configured as a vertical belt press incorporating a horizontal gravity belt thickener. The presses are available in 1-, 1.5-, 2-, 2.5- and 3-meter width to support the full range of process flows. Frame components are optimized using finite element analysis to ensure rigidity and accurate, permanent alignment. Units are available in hot-dipped-galvanized carbon steel or stainless steel and as skid-mounted units when a package system is needed. 800/362-9041; www.as-h.com.


Cylindrical containers

TITANTube technology from Flint Industries is a simple and low-cost solution for dewatering biosolids and water treatment sludge. The technology works as a stand-alone treatment or in conjunction with other mechanical dewatering devices.

The units are large cylindrical containers constructed of high-performance woven fabrics. Wet waste is pumped in, trapping the solids and allowing the filtrate to pass through the porous fabric. Once consolidated, the dewatered solids can be disposed of in a landfill or used for beneficial use. When dewatering biosolids or water treatment sludge with a high percentage of fines, a polymer is often injected into the sludge prior to entering the tube. The polymer causes the sludge to flocculate, increasing the efficiency of the dewatering process. 912/685-3375;



Heavy-duty compactor

The ScrewpactorHD from Headworks Inc. is an upgraded, heavy-duty shafted spiral compactor. Features include robust spiral, high-torque and sealed double-thrust bearings. The unit compacts inorganic solids and pieces of the system itself that break down and get caught.

The low-profile conveyor/compactor is about 6 feet long and 3 feet wide, handles about 105 cubic feet per hour, and is easily retrofitted to existing systems. The unit is manufactured from grade 304 or 316 stainless steel, and the shafted spiral is made of alloy steel. Options include a screenings washing system that loosens and emulsifies organic material on the screenings and a continuous bagging module that collects screenings. 713/647-6667; www.headworksusa.com.


Channel disintegrator

The Dimminutor channel disintegrator from Franklin Miller provides effective automatic screening and grinding of wastewater solids in straight-through channels and wet wells. The unit reduces plastics, wood, rags and other solids to fine bits, enhancing plant operation and improving the reliability of pumps and other downstream equipment.

The unit employs a smooth, continuously rotating design with high torque. As its three bidirectional rotary cutters intermesh at close clearance with stationary cutters, solids are finely reduced to a size small enough to pass through a sizing screen. With no gaps or openings between the screen and cutters, output is controlled. An open design allows it to handle high flow rates with low headloss. The unit is easy to maintain and features individually replaceable cutters, oil lubrication, and a simple rotary design requiring no auxiliary diverter screens. A cantilevered design eliminates seals or bearings near the gritty channel floor. 973/535-9200; www.franklin miller.com.


Inclined screw press

The RoS3Q inclined screw press from Huber Technology offers fully automatic operation. The press uses minimal energy to dewater municipal and industrial sludge and biosolids, resulting in optimal cake solids, low polymer consumption and high capture rates. It generates minimal noise and wear due to the low speed of the compacting screw. The rotating auger and wide gap between the screw conveyor and sieve make the unit insensitive to coarse material. 704/949-1010; www.huber-technology.com.


Pressurized screening

The Hydro-Sludge screen from Hydro International is a durable pressurized screen that separates material from sludge and dewaters screened materials for landfill in one operation. The horizontal, inline coarse material separator has an inlet screening zone and a pressing (compaction) zone. The enclosed system reduces odors and has no washwater requirements. Sludge passes through the perforated stainless steel screen while material larger than 5 mm is captured and conveyed to the compaction zone.

Coarse materials are compacted in the regulating cone, and screenings are discharged for disposal. The unit can be used for pumped feed or on direct discharge from a septage truck and can be used in primary, secondary or combined sludges. It is fully automatic for continuous or intermittent screening. 503/615-8130; www.hydro-int.com.


Bacterial formulation

IPT from In-Pipe Technology is a formulation of select, facultative, symbiotic, spore-forming, naturally occurring, non-pathogenic bacteria. The formulation is regularly added in high concentrations to strategic locations through the collection system, enhancing the microbial community so that more reactions occur in the sewer biofilm. This contributes to increased metabolism of wastewater compounds within the sewer.

IPT bacteria are facultative anaerobes that grow quickly in anoxic conditions (using nitrate as a final electron acceptor), aerobically (using oxygen as the final electron acceptor), and at stages in between (using fermentation). The bacteria convert insoluble solids into a soluble format that is more bioavailable, allowing conversion of the soluble organic compounds into carbon dioxide and nitrogen gas. The processing of organic matter in the collection system reduces the biological load to the wastewater treatment plant. As the bacteria enter the plant, they continue to reduce the solids inventory. The combination of reduced influent load, lower solids inventory, and increased biological activity results in decreased sludge production. 630/871-5844; www.in-pipe.com.


Solids protection

The LEVEL LODOR from JDV Equipment is a user-friendly, low-maintenance way to protect solids from the environment while containing odors and providing even solids distribution. The system allows for easy swap out of dump containers without taking up more floor space than necessary. The unit sits on top of the container and pivots up to allow the container to be swapped out in minutes and without requiring equipment to be hauled down highways. The built-in leveling device allows even distribution without moving the container, reducing the overall footprint. The unit is fully enclosed. Different versions are available depending on material conveyed and output required. 973/366-6556; www.jdvequipment.com.


Advanced sludge dewatering

The Dehydris Twist advanced sludge dewatering process from Infilco Degremont employs the Bucher Unipektin hydraulic piston press technology. The process accepts drinking water and wastewater sludge. The automated process consists of a rotating cylinder and moving piston that continuously squeezes the sludge, allowing the water to pass through flexible drainage elements made of porous woven cloth material. After the sludge enters the cylinder, it is continuously rotated and squeezed by the piston, reaching the limit of mechanical dewatering. The sludge cake is retained inside the cylindrical shell and automatically discharged.

Digested sludge can be dewatered to autothermal conditions before incineration. Maximum dry substance content is achieved for chemically treated and denatured sludge. The high level of automation and self-optimizing controls maximize operational safety and performance, allowing for increased productivity in non-stop operation (24/7) with a minimum amount of operator input. 804/756-7696; www.degremont-technologies.com.


Silo discharger

The silo discharger from Sodimate features a vertical spindle fitted with flexible blades to ensure the mechanical discharge of dry solid materials from silos, rigid bins or hoppers. It rotates within the container bottom cone to prevent non-flowing material from jamming, bridging, compacting or rat holing. The mechanical unloader is designed for difficult dry chemicals such as lime and soda ash.

The mechanical bin activator gently and efficiently discharges dry solids and integrates one, two, three and four precise volumetric screw feeders. Each screw feeder is independent and can feed up to 15,000 pounds per hour with different lengths and throughput variations. 773/665-8800; www.sodimate-inc.com.


Deep-channel screen

The Fine Screen Type MC from Schreiber is a continuous filter belt deep-channel screen with depths up to 50 feet and widths up to 14 feet including slot spacing to 1 mm. The screen requires little maintenance and is easy to work on without dewatering due to the block design and the absence of underwater moving parts.

The block design consists of two elements, straight or hook, that are interchangeable. The individual filter elements are mounted on two stainless steel support shafts with end caps making up separate blocks. Units can be custom configured and are completely assembled then bolted into place. Each block is mounted on a heavy-duty drive chain with no interconnection to adjacent blocks, eliminating wear. Since the filter belt design is not interconnecting, the blocks can be removed in three steps for inspection and maintenance. 205/655-7466; www.schreiberwater.com.


Enclosed thickener

The GSCE Gravalbelt from Komline-Sanderson is an enclosed gravity belt thickener that meets requirements for thickening and odor control. The unit uses the company’s RotoKone high-rate drainage system. 800/225-5457; www.komline.com.


All-in-one plant

The Raptor septage acceptance plant and Raptor septage complete plant from Lakeside Equipment Corp. remove debris and inorganic solids from municipal, industrial and septic tank sludges. The heavy-duty machines incorporate the Raptor fine screen for screening, dewatering and compaction. Accessories include grit and rock removal, and security access, and automated accounting systems. With the addition of aerated grit removal, the acceptance plant is offered as a complete plant. 630/837-5640; www.lakeside-equipment.com.


Positive displacement pumps

NEMO BF/SF positive displacement pumps from NETZSCH Pumps North America are designed for conveying dewatered sludge from a filter press or centrifuge. The customizable rectangular hopper and force feed chamber provide easy entry of the product into the rotor and stator. The coupling rod incorporates a feed screw that extends over the joints and is always positioned opposite the open cavity of the stator. Sludge cake is pushed directly into the open cavity in the shortest possible route, improving chamber filling.

A friction loss reduction (FLR) system reduces pressure, lowers operating costs and extends the system life. The pumps can handle pressures over 1,000 psi. The company’s Ring Nozzle within the FLR system provides a continuous 360-degree even layer of water or polymer within the pipeline for friction loss reduction and pressure reduction. 610/363-8010; www.netzschusa.com.


Two screens in one

The Duet Screen from Ovivo combines a 3 mm fine screen with a finer mesh screen of 500 to 1,800 microns. By adding the second stage screen to a common drum with the first stage fine screen, the unit provides the benefits of two screens. The second stage can remove a substantial amount of fibrous waste, keeping the downstream processes free of as much membrane-fouling waste as possible. The unit is a flow-through screen with low headloss. It can work in a channel with gravity flow or in its own box for gravity or pumped flow applications. 801/931-3000; www.ovivowater.com.


Compact fan press

The Rotary Fan Press from Prime Solution simplifies dewatering for sludges/slurries by using continuous pressure differential technology. Features includes slow rotational speed (less than 1 rpm), semi-automated operation, self-cleaning, low maintenance, long service life, energy efficiency, portability, minimal footprint, and expandability.

Few mechanical parts combined with slow revolution reduces noise and vibration, increases functionality, minimizes maintenance and improves life-cycle costs. Several capacities are available. The simple, compact design allows for easy installation. Skid-mounted systems include a central operator control panel, feed pump, polymer system and inline mixing as standard; plant integrated controls are available. The unit can be tailored for portability and is available as a trailer-mounted mobile system. The system requires minimal supervision. 269/694-6666; www.psirotary.com.


Inline check valve

The CheckMate inline check valve from Red Valve Co./Tideflex Technologies is designed for backflow prevention and odor mitigation. In outfalls, stormwater, CSO and SSO applications, the custom-engineered, all-rubber unibody design eliminates backflow from oceans, rivers and interceptors.

The unit has a low headloss and can open to a near full pipe diameter, maximizing the flow capacity of the outfall, which is beneficial in low-lying areas where limited driving head is available. The valves are available in 4- to 72-inch sizes and are built to suit site-specific and flow needs. The elastomer fabric-reinforced construction eliminates corrosion problems. There are no mechanical components to catch debris, corrode or fail. 412/279-0044; www.tideflex.com.


Hydraulic mixing

The Rotamix system from Vaughan Company for mechanical hydraulic mixing consists of an engineered arrangement of floor-mounted nozzles fed by the company’s Chopper pump. Using custom software, the company analyzes and sizes each application to achieve the desired mixing effect. The unit can be applied in circular, rectangular and oval tanks and basins. 888/249-2467; www.chopperpumps.com.


Cake pump system

The BTH cake pump from seepex allows flow rates up to 220 gpm at pressures up to 540 psi. An auger pushes the cake into the pumping element. The pitch, diameter and speed of the auger can be adjusted to match the application. A customizable open hopper along with system controls results in a non-intrusive cake pump solution. Dry-running protection, load cell sensors, pressure gauge and boundary layer injection complete the system. 937/864-7150; www.seepex.com.


Dewatering containers

Wastequip dewatering containers reduce the cost of waste disposal by separating liquids from solids. Gasketed doors and hydro testing ensure that containers will not leak.

For easy clean up, containers come with easy-to-remove shells that feature a perforated 7-gauge floor. The shells can be removed from the container by removing a few bolts, allowing it to be used as a sludge container. Liners are available to aid in cleanup and disposal. The units can be custom configured for specific applications. For durability, the containers have 1/4-inch floors and 7-gauge sides. Additional features include an outside rail understructure and continuous welds. Lid options include side-to-side roll tarps or single piece, side-to-side plastic or aluminum lids. The units are available in round-bottom or rectangular designs in 20- or 25-cubic-yard sizes. 877/468-9278; www.wastequip.com.


Self-cleaning screen

The CleanFlo Monoscreen from WesTech Engineering is a high-efficiency, self-cleaning fine screen for a variety of wastewater and process water treatment applications. Using a blade and drive system, the screen creates a progressive step motion that allows the screenings to be evenly distributed while minimizing water level surges. The result is a screenings capture ratio of 82.5 percent. When paired with the company’s CleanWash SWP/CPS dewatering unit, the combination maximizes solids capture while minimizing the amount of solids for disposal. 801/265-1000; www.westech-inc.com.


Biochemical oxidation

BIO ENERGIZER from Probiotic Solutions is a specialized micro carbon complex that is used in municipal and industrial systems to reduce sludge, odor, BOD/COD, FOG and costs in wastewater treatment plants and lagoons. The formula biochemically oxidizes sludge in lagoons while remaining online and continuing to work, and reduces the lagoon sludge blanket without the need for draining, drying, dredging, handling or hauling.

When used in activated sludge plants, the formula increases volatile solids destruction and improves decant volume and settleability for greater digester and reactor capacity, allowing for more capacity to waste solids. This is important during winter months when land applying is not an option. The formula uses the Micro Carbon Technology as the base ingredient for maximum microbial stimulation to increase the production efficiency of treatment plants by reducing biosolids quickly, improving settleability and raising dissolved oxygen levels. 800/961-1220; www.probiotic.com.


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