Biological Filtration

Reliable Contaminant Removal Through Engineered Biological Processes

Biological treatment of potable water, defined by the use of specialized bacteria to remove contaminants, has emerged as an increasingly popular alternative to the traditional use of chemicals in a oxidation/coagulation process. The biological process is an attractive solution when the levels of raw water contaminates are abnormally elevated. Given this scenario, backwash intervals can be greatly reduced when compared to backwash intervals of traditional coagulation filtration in the same application.

Features & Benefits

Uses natural biological processes to remove of contaminants
No chemical regeneration required
Reduced chemical consumption compared to conventional oxidation systems
Low backwash frequency with efficient cycles to minimize water use
Stainless steel wedge‑wire underdrain laterals for uniform flow distribution
PLC / HMI‑based control panel for automated system operation
Electrically actuated valves for reliable automated operation
Designed for low operator attention and simplified maintenance

Ozone–Biologically Activated Carbon | O₃-BAC

Pureflow O₃-BAC systems combine ozone oxidation with biologically activated carbon filtration to deliver a robust, multi-barrier treatment solution. Ozone breaks down complex organics, micropollutants, and pathogens into biodegradable compounds, enhancing downstream biologically activated carbon performance.

Features & Benefits

Fully integrated O3-BAC system delivers complete treatment in one engineered package
Containerized option minimizes site work and accelerates installation
High-efficiency ozone mass transfer and contactor maximizes oxidation & contaminant removal
Integrated backwash and air scour maintain consistent filer efficiency
Automated controls ensure reliable performance with minimal operator input
Energy efficient
Safe, quiet, and reliable ozone generator
Compact footprint
High operating gas pressure (up to 43.5 psig) for efficient dissolution