Water & Wastewater Treatment Equipment Serving Fresno, CA
Precision lime feed, biosolids stabilization, drying, storage, and truck loading systems engineered by RDP Technologies for Fresno and Central Valley municipal facilities.
Request a Consultation View ResourcesTrusted Process Equipment for Fresno Water & Wastewater Plants
For more than 45 years, RDP Technologies has built process equipment that proves itself through consistent, dependable operation and a grounded engineering philosophy shaped by decades of real installations. Utilities across California's Central Valley look to RDP for accurate, resilient systems that stay easy to operate and maintain across a long service life.
Biosolids Storage & Precision Truck Loading Systems
The Fresno-Clovis Regional Wastewater Reclamation Facility ranks among the largest treatment operations in the San Joaquin Valley, handling flow from Fresno, Clovis, and surrounding service areas while feeding an extensive groundwater recharge and recycled water program. An operation on that scale turns out significant daily biosolids, and unlike the crowded metros of the coast, the Central Valley still offers nearby agricultural land for beneficial reuse. That makes dependable storage and loadout equipment central to keeping a steady stream of trucks moving to Valley farmland on schedule. RDP Technologies builds biosolids storage systems and precision truck loading systems that carry the whole sequence, from dewatering to the loaded truck pulling out, on automatic control.
Live bottom bin storage puts moving floor technology to work keeping dense sludge cake in steady motion, avoiding the bridging and rat-holing that hang up conventional steep-walled hoppers. Loadout runs automatically through the precision truck loading system, wrapping up most loads in minutes and holding to within a few hundred pounds of the weight the operator dials in.
Three decades and nearly three hundred biosolids conveying installations have honed a bay layout that keeps trucks clean, keeps departures on schedule, and asks very little of operators standing by. With loading running unattended, Fresno-area staff can put their time toward higher-value work elsewhere in the plant. For a program sending trucks out across the Valley's farm belt through triple-digit summer heat, that automation lifts throughput and holds overtime down.
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Lime Slaking & Feed Systems for Fresno Water Treatment Facilities
Fresno spent much of its history drawing drinking water almost entirely from groundwater, but sustained overdraft and the demands of the Sustainable Groundwater Management Act pushed the city to build out surface water capacity at the Northeast and Southeast Surface Water Treatment Facilities. Those plants treat Kings River and San Joaquin River supplies from the Pine Flat and Millerton reservoirs, blending surface and well water across the distribution system. Managing that blend puts real weight on pH adjustment, hardness control, and corrosion stability, particularly where hard Valley groundwater meets treated surface water. Precise lime feed sits at the heart of that chemistry, and RDP designs lime slaking and feed systems engineered to hold it steady day in and day out.
Tekkem slakers use load cell measurement to pair a weighed quantity of quicklime with a weighed quantity of water, holding the slaking reaction inside the proven 180°F to 190°F range. By controlling on weight instead of volume, the system doses with genuine accuracy and lets operators set slurry concentration from one percent up to thirty percent to suit the plant.
The identical Tekkem platform converts to a hydrated lime feed system with no physical rework, a practical advantage as lime supply and pricing shift across California. A continuous slurry loop with pinch valve and flow meter dosing puts accurate feed at every application point a facility needs, and with just one moving part inside the reaction tank, maintenance stays light and predictable on continuous duty.
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Custom Engineering & Process Equipment Support Serving Fresno
Water and wastewater infrastructure across the Fresno region is being reshaped by some of the hardest resource pressures in the state: chronic groundwater overdraft, land subsidence across the San Joaquin Valley, prolonged drought, and the recharge and recycled water push driven by SGMA compliance. Plants here also work through extreme summer heat, winter Tule fog, and Valley air quality constraints. RDP Technologies brings over 45 years of custom process equipment engineering to capital projects across Fresno, Madera, Kings, Tulare, and neighboring Central Valley counties.
Because we handle design, fabrication, and controls programming under one roof, we shape equipment around existing tankage, site limits, and established operator routines rather than forcing a stock package into an awkward fit. Our intelligent control platforms integrate cleanly with SCADA and meet the detailed reporting expected by the California State Water Resources Control Board, the Central Valley Regional Water Quality Control Board, and EPA Region 9.
Our team works alongside municipal engineers, consulting firms, and operations crews from the first scoping conversation through startup and years of ongoing support. Durable hardware, steady day-to-day performance, and straightforward technology that keeps running are the commitments behind every job we take. For Fresno-area utilities, that adds up to one accountable manufacturer designing, fabricating, and backing its equipment across the full service life.
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Biosolids Lime Stabilization & Pasteurization Solutions in Fresno, CA
California's biosolids picture is shifting as land application faces new limits, with counties such as Kern moving to restrict imports and the state weighing PFAS and emerging contaminant concerns. For Central Valley plants that have long relied on Class B application to farmland, Class A pathways offer valuable insurance and broader market access as the rules tighten. RDP Technologies has delivered EPA 503 compliant lime-based solutions since the federal rules were first set, supporting both Class A biosolids treatment and Class B biosolids stabilization at facilities across California and the West.
EnVessel Pasteurization is one of the most broadly adopted Class A methods nationwide, now running at more than 70 sites. It teams lime with a measured dose of added heat rather than piling on excess lime, which restrains chemical use while dependably clearing the time, temperature, and pH marks that complete pathogen kill calls for.
Enhanced Pasteurization takes the same work into a sealed sequencing batch reactor, using lime to drive pH beyond 12 before controlled heat closes out disinfection. Each route qualifies as proven pathogen reduction equipment, documented across published case studies and years of municipal service data. For Fresno-area plants scoping capital work under Central Valley Water Board oversight and a shifting rule set, both are regulator-recognized paths with lengthy, well-supported histories.
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Biosolids Drying Systems for Fresno Wastewater Plants
With California land application under growing restriction and trips to workable reuse sites getting longer, trimming biosolids weight is among the most effective levers a Central Valley plant holds. Drying hands Fresno-area facilities a clear way to shed tonnage and reach higher-value outlets. The RDP-Fenton sludge dryer operates on a repeating batch cycle, so drying time can track the natural swing in cake dryness leaving the dewatering equipment.
A batch dryer takes those inlet variations in stride, whereas continuous units tend to stumble when cake quality moves unexpectedly. Crews running the system routinely remark on how seldom it needs hands-on attention once a solid recipe is established.
What leaves the dryer is far lighter and much smaller in volume, which pulls down trucking spend and unlocks fertilizer, soil amendment, and energy recovery outlets across the Valley and beyond. Set next to upstream RDP lime feed or storage units, a Fresno plant ends up with a single-source biosolids line running shared controls and one support relationship. Long service life and simple operation drove the design from the outset, and the installed base backs that up with hard performance numbers.
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