Water & Wastewater Treatment Equipment Serving Little Rock, AR
Precision lime feed, biosolids stabilization, drying, storage, and truck loading systems engineered by RDP Technologies for Little Rock and Central Arkansas municipal facilities.
Request a Consultation View ResourcesTrusted Process Equipment for Little Rock Water & Wastewater Plants
For over 45 years, RDP Technologies has built process equipment that performs dependably in the field, grounded in a practical engineering approach proven across hundreds of municipal installations. Utilities across Central Arkansas rely on RDP for accurate, durable systems that stay easy to operate and simple to maintain over a long service life.
Biosolids Lime Stabilization & Pasteurization Solutions in Little Rock, AR
Arkansas manages biosolids through its Department of Energy and Environment, and while Central Arkansas farmland has long supported Class B land application, growing attention to PFAS and emerging contaminants is drawing more utilities toward Class A material and the flexibility it brings. RDP Technologies has delivered EPA 503 compliant lime-based solutions since those federal rules were first established, supporting both Class A biosolids treatment and Class B biosolids stabilization at facilities across Arkansas and the surrounding states.
EnVessel Pasteurization is one of the most widely deployed Class A processes in the country, with more than 70 installations in operation. It pairs lime addition with controlled supplemental heat rather than relying on heavy lime overdosing, keeping chemical demand reasonable while reliably meeting the time, temperature, and pH thresholds required for full pathogen kill.
Enhanced Pasteurization moves the cycle into a sealed sequencing batch reactor, where lime drives pH above 12 and controlled heating completes disinfection. Both pathways serve as proven pathogen reduction equipment, supported by published case studies and decades of municipal operating data. For Little Rock-area facilities planning capital upgrades against Arkansas DEQ requirements and evolving reuse expectations, these are regulator-recognized options with strong long-term track records.
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Lime Slaking & Feed Systems for Little Rock Water Treatment Facilities
Central Arkansas Water supplies Little Rock's drinking water primarily from Lake Maumelle and Lake Winona, protected upland reservoirs in the Ouachita foothills known for exceptionally clean, soft source water, treated at the Jack H. Wilson and Ozark Point water treatment plants. Because that water is naturally soft and low in alkalinity, pH adjustment and corrosion control carry much of the treatment load, including the demands of the Lead and Copper Rule across the distribution system. Dependable lime feed underpins that stabilization chemistry, and Central Arkansas Water's nationally recognized watershed protection keeps source quality high. RDP designs lime slaking and feed systems engineered to deliver the precision and reliability high-volume Central Arkansas operations require.
Tekkem slakers rely on load cell technology to combine a measured weight of quicklime with a measured weight of water, holding the slaking reaction within the proven 180°F to 190°F window. That weight-based control enables precision dosing with slurry concentration adjustable from one percent up to thirty percent based on plant requirements.
The same Tekkem platform converts to a hydrated lime feed system without any physical modifications, providing flexibility as lime market conditions shift across Arkansas and the surrounding region. A continuous slurry loop combined with pinch valve and flow meter dosing supports accurate feed at multiple application points within a facility. With only one moving part inside the reaction tank, maintenance demands stay infrequent and predictable for plants running around the clock.
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Biosolids Storage & Precision Truck Loading Systems
The Little Rock Water Reclamation Authority operates a network of treatment plants led by the Adams Field Water Reclamation Facility near the Arkansas River, along with the Fourche Creek and Little Maumelle facilities serving other parts of the system. Treatment across those plants produces steady daily biosolids, and the surrounding Central Arkansas farmland offers practical land application outlets. Reliable storage and loadout equipment keeps trucks moving to those fields on schedule through the region's hot, humid summers and occasional winter weather. RDP Technologies engineers biosolids storage systems and precision truck loading systems that automate the full run, from the dewatering line to the fully loaded truck pulling out.
Moving floor technology inside live bottom bin storage keeps heavy sludge cake advancing steadily, heading off the bridging and rat-holing that stall conventional steep-walled hoppers. Loadout runs automatically through the precision truck loading system, closing most loads within minutes and holding within a couple hundred pounds of the operator's target weight.
Three decades and roughly three hundred biosolids conveying installations have refined a bay layout that keeps trucks clean, departures on schedule, and operator attention at the bay minimal. With loading running on its own, Little Rock-area staff can redirect their hours to higher-value work across the plant. For a program hauling to Central Arkansas land application sites through the full range of seasons, that automation lifts throughput and holds overtime down.
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Custom Engineering & Process Equipment Support Serving Little Rock
Water and wastewater infrastructure across the Little Rock region works within a Central Arkansas setting shaped by the Arkansas River and its navigation and flooding dynamics, the Ouachita foothills to the west, and a climate of hot, humid summers and periodic severe weather. Protecting the Lake Maumelle source watershed adds another layer to regional planning. RDP Technologies brings over 45 years of custom process equipment engineering to capital projects across Pulaski, Saline, Faulkner, and neighboring Central Arkansas counties.
Because design, fabrication, and controls programming stay under one roof, we tailor equipment to existing tankage, site constraints, and the workflows operators already rely on, rather than forcing a stock package into a poor fit. Our control platforms integrate cleanly with SCADA and meet the detailed reporting the Arkansas Department of Energy and Environment and EPA Region 6 require.
We work directly with municipal engineers, consulting firms, and plant operations staff from the earliest scoping through commissioning and long-term technical support. Durable equipment, dependable process performance, and practical technology that keeps performing are the principles behind every project we deliver. Little Rock-area facilities gain a single accountable manufacturer that designs, builds, and stands behind its equipment for the long haul.
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Biosolids Drying Systems for Little Rock Wastewater Plants
With reuse and disposal expectations evolving across Arkansas and hauling costs always a factor, reducing biosolids weight is one of the most effective steps a Little Rock-area plant can take. Drying offers a direct path to lower tonnage and higher-value end products. The RDP-Fenton sludge dryer runs on a repeating batch cycle, letting drying time follow the natural variation in cake dryness coming off dewatering rather than a fixed rate.
Batch sludge drying equipment absorbs those upstream shifts cleanly, where continuous-flow dryers often struggle when feed quality changes without warning. Operators in the field regularly note how little daily attention the system needs once a stable recipe is dialed in.
The dried product emerges markedly reduced in volume and weight, cutting trucking costs and opening pathways into fertilizer, soil amendment, and energy recovery markets across Arkansas and the surrounding region. Paired with upstream RDP lime feed or storage equipment, a Little Rock plant gains a fully integrated biosolids line backed by one manufacturer with consistent controls and ongoing support. Long service life and simple operation guided the design from the start, and installed sites bear that out in real performance data.
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