B.O.D C.O.D. T.D.S. T.S.S. Removal Teflon

Teflon (PTFE) Coating Operation

A manufacturer of Teflon coated products contacted Integrated Engineers seeking a solution to their wastewater problems. They were generating 3,500 gallons of wastewater each week that had to be hauled off site. They were looking for a method to treat this water and reuse the treated water within their facility. Integrated Engineers performed treat ability studies of the wastewater and identified the FloccinAgentTM that would meet their goal.

Watsewater System

Watsewater System

Integrated Engineers designed, built, and installed a system to treat their wastewater. The system integrated existing holding tanks with a new equalizing tank where the water is mixed and aerated prior to treatment. The water from the equalizing tank is treated in a Continuous Flow Unit (CFU), where it is mixed with the FloccinAgentTM and then separated from the resulting sludge. The sludge is collected in a sludge cart for disposal, while the clean water from the CFU is directed to an ozone contact tank.  In this tank the water is treated with ozone, generated by the ozone skid, to remove any remaining organics. The clean, treated water is then ready to enter the water reuse system.

CFU in Action

CFU in Action

The analytical results presented on the next page come from samples collected approximately one month after startup

Ozone Skid

Ozone Skid

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Chicken Processor

This chicken slaughter and processing facility has a wastewater system that treats 1.2 MGD.  Their process uses ferric chloride as the coagulant, caustic to stabilize the pH and an anionic polymer prior to separation in the DAF units.  The facility also does some further processing with addition of seasoning and brines which add TDS/EC to the water.  The ferric/anionic polymer combination is hindered in its ability to handle the brine water causing spikes in effluent BOD/TSS and increased surcharges.  Their treatment costs are at $2.50/1,000 gallons.

Befor and After Floccin

Before and After Floccin

Integrated Engineers, Inc. was asked to evaluate the Floccin 1105 with their wastewater.  The performance of the Floccin 1105 is not effected by the brine water.  Jar tests indicate an improvement in effluent water quality, larger floc size and an improvement in the DAF performances at the same cost of $2.50/1,000 gallons.

Constituent

Untreated

Ferric/anionic

Floccin 1105

BOD

1,100

230

190

COD

2,000

290

270

TSS

2,600

38

31

TDS

960

1190

970

The Ferric/anionic water has a higher level of TDS.  The local POTW is going to start surcharging for levels of TDS for industries in excess of 500 ppm over the potable water going to the facility.  The simplification of using 1 chemical, it’s wider operating pH range and performance over the ferric makes a savings in reduced surcharges, labor, and consistent treatment.

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