Atana Limited

Sustainable wastewater treatment chemicals in a chicken processing plant

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Courtesy of Atana Limited

Atana Ltd was invited to evaluate the potential for introducing an organic, sustainable wastewater treatment regime into a chicken processing plant. The flow was approximately 120m³ (over 18 hours per day).

The plant killed around 126000 birds per day and the sludge volume produced from their effluent treatment plant (which encompassed dissolved air flotation) per annum was around 13000 tonnes.

The existing wastewater treatment regime used the inorganic coagulant ferric sulphate used in conjunction with a flocculant at a cost of around 13.1 pence/m³. The generation of sludge with this treatment system resulted in a sludge disposal cost of 28.9 pence/m³.

For the equivalent effluent discharge values for COD and suspended solids and using the existing effluent treatment plant, Atana Ltd were able to propose an organic, sustainable wastewater treatment regime using a coagulant from their Cofloc range used in conjunction with a flocculant cost of 15.71 pence/m³. However, the sludge disposal cost would be reduced to 13.6 pence/m³ and this could mean an annualised saving over £68000.

The organic, sustainable wastewater treatment regime would reduce the annual generation of sludge by over 50% and as the new treatment would not add non-biodegradable metals, alternative disposal routes for the sludge could be explored.

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