Water & Waste Water

Media Filtration | Aeration | Clarification | Denitrification | Chlorination

Whether it's water intake and treatment or waste water collection and treatment, Chromalox can provide customized solutions to provide precise, rugged, reliable heat exactly where you need it. Freeze protection, temperature maintenance, even comfort heating provide challenges in the presence of potentially flammable or explosive gases, vapors, treatment chemicals, or dusts, not to mention the corrosive effects of water everywhere. We bring to your application our depth of knowledge and experience in the application and control of heat for water and waste water treatment, combined with a complete offering of hazardous- and extreme-duty heaters and controls that meet a variety of must-have approvals and certifications.

We combine innovative design and engineering expertise and best-in-class products with qualified project management, experienced commissioning, and responsive support to help you employ highly efficient water technologies to achieve the best water quality using less energy, reducing life-cycle costs, and providing environmental benefits to users and the communities they serve.

View our Waste Water Treatment Brochure

General-Purpose Blowers

Heavy-gauge steel blowers trimmed in a polyester powder coat come in horizontal or vertical configurations that can be ceiling- and wall-mounted. Adjustable louvres direct airflow. Chromalox general-purpose blowers meet UL, CSA, NEC, and OSHA requirements. LIJH series heaters include seismic qualifications. Various built-in control options are available. Click here to visit catalog


Flanged and Screw Plug Immersion Heaters

Ideal for chlorine injection systems, flanged and screw plug immersion heaters are fitted directly through tank walls to heat chlorine liquid and gas by direct contact. Flanged immersion heaters are constructed of hairpin-bent tubular elements welded or brazed into a flange and provided with electrical enclosures. A wide selection of flange sizes and electrical enclosures are available. Screw plug immersion heaters consist of tubular elements in a threaded hex plug and are provided with a thermowell for the temperature control sensor and a variety of electrical enclosures for electrical connections. Click here to visit catalog


Hazardous Duty Heaters

Hazardous-duty convection and forced air blower-type heaters are designed for rugged industrial use in the presence of potentially flammable or explosive gases, vapors, or dusts in locations such as sewage treatment plants, petroleum refineries, and chemical processing plants. Numerous control options are available. Units are UL-listed, and GSA- and MSHA certified models are available for wall or ceiling mounting. Consult the National Electric Code for classification of your hazardous area before selecting your heater. Click here to visit catalog


Portable Heaters

Clean, odor-free, forced-air portable heaters constructed for heavy-duty service. Easily moved to virtually any location where instant heat is required. Forced air designs are ideal for worker comfort, drying and curing, thawing pipes and machinery, and where temporary, localized heat is necessary. Click here to visit catalog


Custom Power Control Panels

Panels engineered with solid-state controls built to the most rigid standards and sized for virtually any application or specification. Select from many NEMA-type enclosures, single- or three-phase load requirements, voltages, transformers, fusing, contactors, firing cards, and more. We can design the power control panel best-suited for your specific application. Click here to visit catalog


Radiant Heaters

Radiant heaters provide virtually instantaneous dependable heat for tough-to-heat areas. They are designed for mixed mounting and will maintain an isolated comfort level within a larger, cooler area. Heavy-duty, metal-sheathed elements resist impact and vibration and are ideal for high-abuse applications. Click here to visit catalog


Heavy-Duty Blowers

Heavy-duty forced-air heaters feature heavy-duty construction for use in dirty, corrosive environments. Some models are available with NEMA 4X control enclosures and stainless steel construction to resist dirt contamination and chemical attack, and can be hosed down. Chromalox heavy-duty heaters are UL-listed and meet NEC and OSHA requirements. Some models are CSA-certified. Click here to visit catalog


Heat Trace and Controls

Heat tracing provides freeze protection for valves, pipes, tanks, and instrumentation lines.Click here to visit catalog


The task of freeze protection in a wastewater treatment plant is compounded by the presence of potentially flammable or explosive gases, vapors, powdered metals, or dusts. Chromalox offers a complete line of hazardous-duty heaters than are UL-listed and include GSA- and MSHA-certified models that meet a variety of National Electric Code hazardous applications classifications. Plus, Chromalox maintains an inventory of nearly one million items and operates the fastest delivery systems in the business for quick parts replacement and minimal downtime.

Specific applications include:

Flanged and screw plug immersion heaters for chlorine injection systems.

Heat tracing and controls for freeze protection of valves, pipes, tanks, and instrumentation lines.

General-purpose comfort heaters for:

  • Instrumentation and control rooms
  • Laboratory and computer rooms
  • Locker rooms and restrooms

Heavy-duty heaters for:

  • Pump and blower rooms
  • Filter rooms and dewatering areas
  • Pipe galleries and machine rooms
  • Repair shops

Hazardous-duty heaters for:

  • Grit removal and screening areas
  • Digester gas control rooms
  • Sludge gas compressor rooms
  • Chlorine and sulphur dioxide rooms
  • Enclosed primary sedimentation tanks
  • Scum concentration tanks

Portable heaters for:

  • Temporary, localized heat on shipping docks
  • Heating isolated areas
  • Isolated zones within a larger, cooler area