PW E-Cell Treatment Report Company Pond Water


Company personnel provided NEAT with 2 – five gallon containers of Pond Water taken from the holding pond.  These samples were taken by Company personnel and shipped to NEAT.


NEAT personnel completed PW E-Cell treatments on this pond water in their shop in Kelowna, B.C.  Lab samples for ICP metals analysis was not taken, due to previous testing. There were raw water samples taken from the previous pond water, from a sample sent to NEAT to do the KB-1 bench treatment and there was no metal concentrations found in that water. 


Objective of the initial PW E-cell test was to develop a treatment procedure for treatment of the pond water and to see if the treated water from the PW E-cell treatment would be suitable for recycling.  NEAT has presented the following information to Company management for their review.  From test results, we believe it is reasonable to believe that the system will work very well. 



Figure 1.0 -  Raw Pond water 5 gallon Sample

provided by Company personnel.  At pH 6.90


As shown in the sample above there was a red colouring to the water.  There was a limited amount of sludge in the effluent when the water in the pail was stirred the pail prior to PW E-cell treatment.


At this time, the pH was taken and was @ pH 6.90 and there was no odor.  When the PW E-cell treatment was done, there was “No” pH adjustment done.  If the pond water can be ecell treated without pH adjustment, then the pH probe and metering pump for caustic addition will not be required, providing savings in the equipment set, less maintenance and much cleaner treatment process. 


Page 2.0                                                Powell Water E-cell Test Treatment Report                  N.E.A.T. Environment, Inc.



The first 5 gallons of effluent was ran through the ecell @


1 chamber @  110v. x 6 amp at about 100%  amperage power


    The treated water and floc flow over the weir provided clear water

    With dark green to black floc which precipitated very quickly.



Fig. 2.0 – PW E-cell chamber with overflow treated water.

Clear water with development of floc at top of chamber.



Figure 3.0 -  Powell Water 1.5 gpm E-Cell treating

Company pond water

Page 3.0                                                Powell Water E-cell Test Treatment Report                  N.E.A.T. Environment, Inc.



Figure 4.0 – Comparison of the raw pond water with

PW E-cell treated water.  Very heavy Floc with clear water.

E-Cell treated  pH 7.73


From the two test runs, we felt that the 1 chamber treatment handled the treatment of the pond water very well.  On the first 5 gallon treatment, the ecell was operated @ 100% amperage power.  On the second 5 gallon treatment, the chamber operated @ 50% amperage power.  Both treatments had dark green floc and clear water. 


The second 5 gallon pail of effluent was ran through the ecell @ 


1 - chamber @  110v. x 4 amp at about 50% amperage power


The treated water and floc flow over the weir provided clear water with dark green to black floc which precipitated very quickly. 



Figure 5.0 – PW E-cell treated pond water, with the first treatment column on the right.

The lower power - 2nd 5 gallon treatment on the left. 

Page 4.0                                                Powell Water E-cell Test Treatment Report                  N.E.A.T. Environment, Inc.




Figure 6.0 -  The floc precipitation is heavy and settles fairly quickly.

The column shown above on the left is about 5 mins after collection from chamber.



Figure 7 – 12 hour settlement time.   Sludge could be dewatered with a filter press

Or by dewatering drip tank, which is fairly slow.




Page 5.0                                                Powell Water E-cell Test Treatment Report                  N.E.A.T. Environment, Inc.


From a previous email from Company, the pond water flow was estimated to be @ 600 Liters per hour.  This would be approximately 160 gallons per hour and 2.6 gallons per minute.  We would suggest that the smallest Powell Water E-Cell that would be installed, would be the 3 gallons per minute.  If there is larger flows expected and limited holding capacity, the a 6 gallon per minute would be recommended.


The PW E-Cell tests were very successful and the Pond water treated easily at the effluent pH that was collected from the pond.  From the test, we would expect that the only requirement for the pond water to be recycled to the water reuse system would be the separation of the sludge from the ecell treated water by filter bag or filter press.  A polishing bag filter might be used to filter out the small pin floc.  The ecell treated water would go to a holding tank to be used as required.


NEAT can supply the air diaphragm sludge pump and filter press for the dewatering system.  Sludge should be able to be disposed to a non-haz industrial landfill.  The polishing filter for water recycle can be purchased by Company or NEAT provide it.


At this time, NEAT has not provided the cost of treatment per 1000 gallons of water.  We would require the cost of electricity that is paid at the Company shop.  Once that has been provided, we can provide an estimate.  The cost per 1000 gallons, should be very low.


We have attached a flow chart that we believe would work well for the ecell treated decant water and floc separation.  Once Company management have had a chance to review this test report and the flow chart , then I will call and we will review the material make adjustments as required and provide a final quotation for supply of the Powell Water E-cell and equipment as required.



Presented by :  Ken Gardner,


                        N.E.A.T. Environment, Inc.


                        June 03, 2005