Blue PRO® Advanced Phosphorous Removal

Evergreen Engineering and Blue Water Technology Inc., provides a comprehensive technical solution for advanced phosphorus removal for Municipal WWTP. Blue Waters Technology Inc. "Blue Pro" is the market leader in wastewater solutions for phosphorus and nitrates.

Blue PRO® uses reactive filtration to lower phosphorus to extremely low levels.

The unique concept of the filter is the reactive filter media and the continuous regeneration of the media. One of the keys to this technology is the reactive filter media that maximizes the efficiency of the filter by promoting adsorption in combination with co-precipitation. Continuously regenerating the reactive filter media is accomplished by using a moving bed filter to constantly grind the surface of the media, creating fresh sites for adsorption. For this reason no backwashing or exchange of media is necessary, which reduces operations and maintenance hassle and cost.

HFO allows adsorption of phosphorus to extremely low levels. This removal mechanism is more efficient than coagulation-filtration for removing contaminants to extremely low levels. Through adsorption Blue PRO® is able to achieve total phosphorus levels <0.010 mg/L.

Blue PRO® systems are available in a number of configurations to accommodate any system size or phosphorus regulation. The filters are available as free-standing fiberglass units or as concrete installations. Smaller units may be mounted on skid systems for mobility. The modular nature of the filters allows easy system expansion.

Single-pass systems may meet total phosphorus regulations as low as 0.1 mg/L, depending on the influent concentration. Lower limits are achieved with two-pass systems, and reject recycle. With these alternative configurations, full-scale installations have reached <0.010 mg/L. Blue Water maintains an active research program to continually improve performance for limit-of-technology phosphorus removal results.

Reject recycle refers to the return of process residuals to an earlier point in a wastewater plant. Blue PRO® reject particulates contain significant adsorptive capacity.

Recycling this material can achieve significant additional phosphorus reduction through the plant's secondary system, further reducing the final effluent phosphorus
concentration. Phosphorus is not released in the secondary system or through digestion. No change is required in the plant's sludge handling system, plus the
iron helps control odor and may produce a drier biosolid. The Blue PRO® filters may also be used for denitrification, and this application may be combined with phosphorus removal. Nutrient removal projects are currently installed around the country. In addition, pilot projects are currently operating in several different
locations.

Advantages of Blue PRO® over other technologies:

Contact Evergreen Engineering for information about piloting Blue Pro at your location.