Slaughterhouse Slaughtering Wastewater Treatment

DAF Dissolved Air Flotation for Slaughterhouse Slaughtering Wastewater Treatment
Slaughterhouse slaughtering wastewater mainly comes from these below sources: live animal washing wastewater before slaughtering, meat and viscera washing wastewater, washing water for pens, slaughtering equipment and working site. Main pollutants inside water are: Blood, hair, oil/grease, small size meat(chipping), viscera, undigested residue and faeces in intestines and stomach.

Features of slaughterhouse wastewater:
** Large changes in wastewater quality and wastewater quantity.
** High contents of organic pollutants, i.e. High BOD and COD.
** High contents of suspended solids, i.e. High TSS
** Red-brown color
** Bad smell

Feed slaughtering wastewater to dissolved air flotation by pump. And dose flocculant and coagulant into and thoroughly mix with wastewater for flocculation reaction to coagulate the oil & grease, colloidal particles and micro suspended solids to conglomerate the particles into bigger clusters.

Dissolved air flotation will release millions of tiny bubbles into water, these bubbles attach to, and form within, the solids or chemical flocculants entering the vessel, causing them to float to water surface where they are retained and forms scum layer, which is then subsequently removed by DAF skimmer.

Dissolved air flotation removes the most part of color and suspended solids(TSS), also will remove part of BOD and COD, greatly reduce the pollution loads for the subsequent biological treatment process.