A process water treatment and recycling system clarifies and purifies the
process water in a food processing or similar system wherein the treated
water may used in the fresh water stream of the system. Removal of useful
byproducts in the process water stream is also facilitated. The system is
a mechanical filter system and does not use any chemicals. The system is
a multiple step filter process. Additional steps may added where further
clarification is required and fewer steps are contemplated in certain
applications. The system incorporates multiple mechanical screening to
remove the solid waste from the water stream. Experimental results have
established that up to 100% of TSS, 79% of BOD and 86% of COD are
removed. This brings the water to acceptable recycling purity ranges and
reduces the amount of fresh water required to be added to the system by
as much as 75%. It also increases the recovery level of useful byproducts
such as starch. The mechanical filtration system of the subject invention
eliminates the need for various chemicals, defoamers and process water
treatment chemicals. No additional process water treatment is required
for water released into the public waste water system.
