Services and Consulting from Ecosystem Consulting Service, ...

Water Supply Limnology

Water Supply Reservoirs provide an opportunity to improve the quality of water that enters a water treatment plant. Management of the reservoir by Layer Aeration, Hypolimnetic Aeration, Oxygenation, Depth-Selective Flow Routing, Focused Treatments, and other approaches can control raw water quality, improve potable water treatment efficiency, and avoid treatment problems such as: Avoid Taste and Odor Episodes (Geosmin and MIB from benthic and...

Watershed Management Services

Eutrophication, driven by increased nutrient loading, results in the degradation of a lake resource for a variety of important uses. There are two approaches that can improve lake resource quality: Reduce the amount of external loading from the watershed (nutrients, sediments, oxygen demand, organics), and Increase the assimilative capacity of the lake (ability to accept external loads while expressing good resource quality). Our lake restoration work...

Watershed Management Services

In some cases little is known about the physical, chemical, and biological nature of a water resource because available field data is limited. A problem, such as taste and odor, shortened filter runs, algae blooms, weed infestation, or fish kills is recognized, but data is not available to identify potential or likely causes. A focused baseline study can be very useful in such cases, to define the nature of the system, potential causes of problems,...

Cooperative Work Services

We welcome the opportunity to participate on Project Teams to diagnose water resource problems and prescribe effective treatments. We have participated on AWWA Expert Panels and as Subcontractor to Environmental Engineering Companies to provide limnological expertise. We have served on a variety of research teams with Universities and Government Environmental Agencies.

Artificial Circulation Services

Artificial circulation was the first aeration method developed. When successful, it mixes the entire water body, expanding the warm surface epilimnion all the way to the bottom. The most common equipment used for the technique is diffused air 'bubblers' which circulate the water from the bottom to the surface. However, there are also Solar-Driven Mechanical Mixers, Propeller/Impeller Mixers, and other devices. All perform the same basic technique:...

Hypolimnetic Aeration Services

Hypolimnetic Aeration is most applicable in deep lakes where oxygen loss ascendsto the top of the hypolimnion but does not ascend above the thermocline. Hypolimnetic Aeration is especially useful in lakes and reservoirs in which the iron cycle dominates anaerobic respiration and controls internal phosphorus cycling. It is applicable for coldwater fishery habitat restoration in lakes which stillexhibit a highly aerobic metalimnion. When oxygen loss...

Layer Aeration Services

Layer Aeration: (Innovative Technology Award presented by USEPA-NE) Layer Aeration circulates and aerates specific depth layers in a reservoir or lake. The method takes advantage of oxygen produced by plants in upper waters to offset the demand for oxygen in deeper water. Hence, power requirements and costs are substantially lower than other aeration approaches. (US Pat 4,724,086) The method is especially beneficial for: High Quality Withdrawal Layers...

Pneumatic Down Flow Aeration / Oxygenation

In some cases, subsidizing dissolved oxygen availability is most reliable using either pure oxygen or compressed air containing a greater fraction of oxygen than atmospheric air (21% oxygen). Pure oxygen has been used in some parts of the US to maintain dissolved oxygen downstream of a reservoir dam release (to maintain fishery habitat) and where oxygen demand is extreme. Early systems used mechanical/electrical pumps underwater, which required...

Flow Routing

How water enters, flows through, and exits a lake or reservoir can have a substantial influence over water quality and habitat suitability. What if watershed inputs high in plant nutrients were to plunge to the bottom, below where the nutrients are available to algae? What if water were to flow over the spillway as it naturally does, but to reach the spillway it must be drawn from a deep layer; and the induced flushing rate overcame the...

Ecosystem Consulting Service, Inc Services

Consulting

Water Supply Limnology

Watershed Management Services

Watershed Management Services

Cooperative Work Services

Aeration and Circulation

Artificial Circulation Services

Hypolimnetic Aeration Services

Layer Aeration Services

Pneumatic Down Flow Aeration / Oxygenation

Flow Routing