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American Cotton Growers Study



Study indicates significant benefits from ACF-32 treatments; reducing CODs and Suspended Solids, as well as Hydrogen Sulfide for odor control in cotton processing plant.



T.P. ASSOCIATES INTERNATIONAL, INC.
17875 Cherokee P.O. Box 96
Harpster, Ohio 43323
FAX # 614-496-4121
614-496-4571

Mr. Emerson Tucker
American Cotton Growers
P.0. Box 2827
Lubbock, Texas 79408
August 1, 1985

Dear Mr. Tucker:

Below are the results of analyses we performed on the waste samples received on July 10, 1985. These samples of wastewater were labeled Lagoon No. 1, No. 2 and No. 3. The samples were analyzed in order to assure ourselves that appropriate concentrations of nutrients were present for the growth of large numbers of micro-organisms and to be certain that inhibitory quantities of toxic materials were not present.



Laboratory No. 071085-1 071085-2 071085-3
pH 8.56 S.U. 8.98 S.U 8.78 S.U.
Phosphorus as P. 11.94 mg/ll 18.81 mg/l 4.85 mg/l
Total Suspended Solids 6.34 mg/l 40.00 mg/l 4.21 mg/l
Ammonia as N. 3112.00 mg/l 4711.00 mg/l 5139.00 mg/l
COD 080.00 mg/l 2067.00 mg/l 868.00 mg/l
Suspended Solids 64.80 mg/l 93.60 mg/l 1692.10 mg/l
Hydrogen sulfide 677.00 mg/l 508.00 mg/l 1692.00 mg/l
Chlorides <1 ug/l <1 ug/l <3 ug/l
Cadmium <3 ug/l <3 ug/l <3 ug/l
T. Chromium <2 ug/l <2 ug/l <2 ug/l
Copper <3 ug/l <3 ug/l <3 ug/l
Lead 9 ug/l <9 ug/l <9 ug/l
Nickel 104 ug/l 42 ug/1 21 ug/1

Following this initial analysis, an aliquot of the sample was inoculated with AquaClean at concentrations of 5 parts per million and 10 PPM. These samples were then monitored over a fifteen-day period through July 26th. The following is a summary of the results. (All data are in mg/l).


LAGOON NO. 1
Sample treated with 5 mg/l Sample treated with 10 mg/l Sample control untreated
COD SS H2S COD SS H2S COD SS H2S
7-10-85 3112 980 64.80 3112 980 64.80 3112 980 64.80
7-15-85 2563 640 40.68 3410 463 17.46 2964 914 59.11
7-20-85 2178 460 29.68 2662 224 6.82 1868 668 59.11
7-26-85 1142 319 11.18 1054 120 0.00 1754 530 42.11
% Red. 63.3% 67.4% 82.7% 66.1% 87.8% 100% 43.6% 45.9% 35.0%

LAGOON NO. 2
Sample treated with 5 mg/l Sample treated with 10 mg/l Sample control untreated
COD SS H2S COD SS H2S COD SS H2S
7-10-85 4711 2067 93.60 4711 2067 93.60 4711 2067 93.60
7-15-85 3550 1286 39.76 3975 824 12.66 4380 1542 88.72
7-20-85 2662 926 26.84 2662 926 4.96 3970 1286 84.00
7-26-85 1412 478 21.16 1578 120 1.84 2380 1048 80.60
% Red. 70.0% 76.9% 77.4% 66.5% 94.2% 98.0% 49.4% 49.3% 13.9%

LAGOON NO. 3
Sample treated with 5 mg/l Sample treated with 10 mg/l Sample control untreated
COD SS H2S COD SS H2S COD SS H2S
7-10-85 5139 868 86.40 5139 868 86.40 5139 868 86.40
7-15-85 4560 611 ----- 5062 396 ----- 4982 1021 -----
7-20-85 2178 314 28.21 2662 216 2.00 4221 1004 68.86
7-26-85 1660 292 14.81 1772 109 0.00 2582 546 41.62
% Red 67.7% 66.3% 82.9% 65.5% 87.4% 100% 49.8% 37.1% 51.8%

As you can see, good reduction of COD, SS and hydrogen sulfide concentration has been demonstrated over the test period for all of the inoculation levels. By observing the increased reductions between the untreated and the treated samples you see clearly the benefits possible by using this material. The oxidation of Hydrogen sulfide is greatly accelerated in the treated samples when compared to the untreated sample. In the No. 1 lagoon the 5 ppm showed 47.7% greater removal of H2S and 65.0% at the 10 ppm seed rate. Likewise the No. 2 lagoon demonstrated 63.5% and 84.1% greater removal at the respective doses, and the No. 3 lagoon was 31.1% at 5 ppm and 35.6% better. We feel quite confident that the addition of AquaClean to your wastewater treatment system will affect similar removal rates of these parameters.

The application rate we suggest is approximately 10 ppm applied to each of the lagoons as an initial seed rate and one quart every other week into the lagoon influents. If at any time the system gets out of balance due to some unusual influent or such, the addition of one gallon of AquaClean per lagoon would bring the system back on line.

We thank you for the opportunity to investigate the use of AquaClean in your system and we feel that its use could benefit your operation.

If we can further assist you or answer any questions please call at any time.

Sincerely,

William F. Pfeiffer, Ch.D
Director of Operations

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