Drinking Water Treatment Processes

Surface Water In-Lake Treatment

Nutrients, Algae, Fe &Mn, Taste & Odor

ECO2 System at the Marston Reservoir
Denver Water installed a 6ft ECO2 System at the Marston Reservoir to increase the water quality of their drinking water.

Iron & Manganese

Maintaining aerobic conditions above the sediment will suppress the release of iron and manganese, having a direct effect on drinking water quality. Aerobic conditions also prevent the formation of H2S and the release of phosphorous back into the water column, reducing the internal nutrient load and its fertilizing effect on algae growth. Experience from a 20 year long operation of a Speece Cone in a reservoir has shown the reversal from a eutrophic lake to an almost oligotrophic state. Reducing algae blooms also reduce the total organic carbon (TOC) load, a pre-cursor to disinfection byproducts (DBPs).

Fully Dissolved Oxygen

ECO2‘s Speece Cone is the most efficient technology for Hypolimnetic Oxygenation. The ECO2 System does not add bubbles with an upward motion to the lake, but instead fully dissolved oxygen in a liquid stream which can be delivered horizontally across the sediment.

Hypolimnetic Oxygenation maintains the natural stratification and cold water fish habitat. Only the bottom layer (hypolimnion) of the lake, where oxygen is needed most, is treated, making it a very efficient approach to solving many water quality problems at once.

TECH LIBRARY: MARSTON RESERVOIR, CO CASE STUDY >

Marston Reservoir Bottom Dissolved Oxygen

The ECO2 SuperOxygenation System is sized for a maximum oxygen feed rate of 2,000 lb/day and is designed to run from May, prior to the first turnover, through fall. The System is attached to a concrete pad set on a base of rock and gravel at the reservoir bottom. The project was installed over a five month period and began operation in May 2009.

Iron and Manganese, and Disifection Byproducts (Dbps)

Water treatment costs can be lowered significantly by using cleaner source water. Oxygenating a lake or reservoir can have many positive effects on water quality, that will ultimately save money on water treatment.

Proven Results

Maintaining aerobic conditions above the sediment will suppress the release of iron and manganese, having a direct effect on drinking water quality. Aerobic conditions also prevent the formation of H2S and the release of phosphorous back into the water column, reducing the internal nutrient load and its fertilizing effect on algae growth. Experience from a 20 year long operation of a Speece Cone in a reservoir has shown the reversal from a eutrophic lake to an almost oligotrophic state. Reducing algae blooms also reduce the total organic carbon (TOC) load, a pre-cursor to disinfection byproducts (DBPs).

Fully Dissolved Oxygen

ECO2‘s Speece Cone is the most efficient technology for Hypolimnetic Oxygenation. The ECO2 System does not add bubbles with an upward motion to the lake, but instead fully dissolved oxygen in a liquid stream which can be delivered horizontally across the sediment.

Hypolimnetic Oxygenation maintains the natural stratification and cold water fish habitat. Only the bottom layer (hypolimnion) of the lake, where oxygen is needed most, is treated, making it a very efficient approach to solving many water quality problems at once.

ECO2‘s TECHNOLOGY ADVANTAGES >
Speece Cone - Camanche Reservoir
East Bay MUD’s Camanche Reservoir has been oxygenated by a Speece Cone since 1994. This system is still operational, adding close to 8 tons of oxygen per day to the water to improve water quality.
Oxygen dissolved every year by ECO2 Systems
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Oxygen dissolved every year by ECO2 Systems.

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