Feasibility Assessment

For New Applications and Existing Process Optimization

The Flotation Feasibility Assessment is a thorough, on-site, evaluation that determines the treatability of a wastewater or process stream.  Although this study uses the Dissolved Air Flotation (DAF) process for separating product or contaminants from a wastewater stream, the information generated is useful for evaluating other processes as well.  An on-site study assures that tests are conducted on representative and fresh samples collected when required to take into account waste stream variations due to product or process changes, sanitation operations, etc.

The tests are conducted in accordance with established procedures coupling jar testing techniques with a separation step performed in a Bench Scale Flotation Apparatus.  The results from this work provide a valid prediction of full scale flotation system performance.  The information applies to the design of high performance flotation systems and can also be used for Upgrading and Optimizing the performance of existing clarification systems.

FAQs addressed by the Feasibility Assessment include:

  1. Is flotation the most appropriate and cost-effective treatment process for this waste stream?
  2. To what extent will contaminants of concern be removed?
  3. Will physical/chemical (flotation or other) treatment provide sufficient contaminant removal to achieve consistent compliance with discharge limits?
  4. What chemical treatment program is most appropriate for achieving the treatment goals?
  5. How much sludge will be generated and what is the most practical and cost-effective disposal or recovery option?
  6. How much physical space will be required for treatment equipment?
  7. What auxiliary equipment will be required – equalization facilities, solids handling equipment, process controls, etc.?
  8. What will the equipment cost and what will it cost to operate?
  9. Can anything be done in the plant to help achieve compliance goals?
  10. Can existing equipment be upgraded to achieve waste treatment or product recovery requirements?

In most cases, the Feasibility Assessment results in recommendations that can be applied directly to treatment system design.

All of the equipment and chemicals required for the test work will be provided.  The customer's responsibility is limited to the following:

  1. Locate representative sampling points, make any arrangements needed for obtaining samples (example – install sample valves, remove manhole covers, provide sampling devices, if required) and collect a 24-hour composite sample prior to the visit – when applicable.
  2. Provide a 10 ft2 lab bench area or similar space with sink and running water.
  3. Provide laboratory analysis of control (raw) and treated test samples.  Specific sample containers for contaminants of concern should be obtained from the facility's certified environmental analytical laboratory along with Chain of Custody documents.
  4. Provide a tour of the facility and any existing waste treatment facilities.  Discuss the plant operation in general and the waste conditions in detail.
  5. Participate in a meeting following the test program to discuss results and findings and what action is to be taken.
  6. Witness the testing.  A client is encouraged to take part in the testing program, thereby gaining a good understanding of the process.
  7. Provide copies of any available waste treatment data, and drawings of existing treatment facilities.

Fee, Reporting, and Schedule:

Typically a minimum of two (2) days on-site are required to complete the work.

Consulting Labor for site work is provided on an application specific daily rate basis.  The client also pays all travel and living expenses incurred to complete the work.  Labor and expenses usually run about $2,500 - $5,500 which covers travel time and report preparation in most cases.  Report preparation and follow-up work is prorated at $100.00/Hr.

The client also arranges and pays directly for analytical services.

A concise Report of Findings will be issued which will include conclusions and recommendations for meeting the client's objective.  The report is usually issued within two weeks of receiving analytical results.

Service can usually be scheduled with two weeks notice upon receipt of a Purchase Order or letter of intent.

The Scope of Work offered in a Feasibility Assessment is tailored to meet specific facility objectives.  Additional time may be required.

To inquire about an application, please call:


Ecosa 30 Pinewood Place Asheville, NC 28806 USA 828.505.0241