The energy from the high velocity stream is utilized to mix and distribute the

oxygenated water throughout the river. The side-stream can also be delivered by

a variety of injection options including plume, flash mixing, and directed injection

for site specific needs to either minimize or maximize mixing. The side-stream

delivery technique also allows for efficient oxygenation of river water containing

solids of any size. The side stream of water passing through the SDOX can be

screened prior to passing through the SDOX and solids up to 1/4 inch can be

tolerated. All internal components are non-fouling and stainless steel to prevent

corrosion.

Because the SDOX adds oxygen to water at the molecular level, microbes are

rapidly able to utilize the oxygen for metabolism, reducing organic contamination

of streams. The oxygen stays in solution and is transported downstream with

high conservation, resulting in efficient remediation of contamination events and

protection of sensitive species. The SDOX system can be applied in a wide range

of remediation processes to:

•

Enhance in-river processes to reduce the impact from episodic releases of

stormwater or wastewater contaminated with organic carbon and excess

nutrients;

•

Enhance microbial metabolism of organic contaminants in spills from

industrial facilities;

•

Supplement DO to reduce seasonal stresses on endemic or critical aquatic

species due to high temperatures or high organic loads;

•

Provide an oxygen refuge for critical aquatic species during stress periods;

•

Enhance sediment oxygen availability, thereby reducing sediment oxygen

demand;

•

Reduce the impact of eutrophic oxygen demand by supplementing oxygen

during critical dark-respiration periods;

•

Provide a rapid redox shift for precipitation of metals.

The source of oxygen for the SDOX can be liquid oxygen, oxygen generators, or

gas cylinder. The SDOX is available in several sizes, providing delivery rates up

to 3000 lbs of DO per day.  SDOX units can be manually or automatically

operated, depending on user requirements. Portable SDOX units are available

that can be operated in response to intermittent, site-specific needs. Variable

speed pump drives with high efficiency motors are used so delivery rates can be

easily varied from 40% to 100% full capacity without compromising efficiency.