Our powder activated carbon treatment (PACT®) process leverages a combination of biological treatment and carbon absorption into one step. The PACT process can treat wastewater to a higher degree than conventional processes, aiding in applications where discharge requirements are very low or water reuse is desired at the facility. In addition, combining the PACT process with the Zimpro® Wet Air Regeneration (WAR) process allows for onsite regeneration of the powdered carbon greatly improving the economics of carbon absorption.
No two water treatment projects are alike, which is why we designed PACT systems with flexibility in mind. From retrofits to new construction, prefabricated units to large-scale, custom-designed systems, PACT systems provide versatile, cost-efficient solutions for the most difficult wastewater treatment challenges. This ensures operational stability, and wastewater recovery and beneficial reuse.
As the perception of water shifts from being an abundant resource to being a valuable and often scarce commodity, your water treatment needs may also change. Backed by our wastewater treatment experience, Lummus Technology is ready to support your teams with exceptional value and expertise. And whether your main concern is cost or regulatory compliance, we can work with you from the onset to design the right long-term solution.
Applications
- Conventional activated sludge processing
- High strength or toxic wastewaters that are not compatible with conventional activated sludge
- Salty wastewaters such as oxidized spent caustic streams in a dedicated manner so that the remainder of the facility wastewater can be beneficially reused
- Wastewaters containing heavy metals such as landfill leachate
- Difficult wastewaters to water reuse quality with multiple references achieving discharge COD less than 30 mg/L
- Offers onsite carbon regeneration using the WAR technology to re-active the carbon and destroy biological solids
Benefits
- Achieves desired effluent quality through an optimized carbon dose
- Doses carbon directly into the aeration basin
- Minimizes footprint
- Buffers upsets and shock loading
- Controls odor and color
- Provides continuous or batch flow; factory-built or field erected
Zimpro Wet Air Regeneration
Lummus understands the importance of operational costs when it comes to treating wastewater with our PACT process. The Zimpro® Wet Air Regeneration (WAR) process was developed for two specific purposes.
- To regenerate carbon onsite and allowing more than 90% of the activated carbon to be recycled in the process with the same or better activity as virgin carbon
- To eliminate sludge that previously would require disposal offsite; now more than 90% of sludge solids are destroyed in the WAR process