|Dairy 1||Dairy 2||Savings|
|Waste load (lb of BOD5 per thousand lb of milk)||1||5||4|
|Daily BOD5 surcharge||$129||$645||$516|
|Cost per thousand pounds of milk processed||$0.20||$1.00||$0.80|
|Cost per thousand gallons of milk processed||$1.72||$8.60||$6.88|
Biochemical oxygen demand or BOD is the amount of dissolved oxygen required by aerobic biological organisms in water to neutralize organic material at a given temperature over a specific time. The BOD value is often used as a reliable measure of the degree of organic pollution suspended in water.
The fundamental objective is to send high load BOD waste water to a recovery tank/system and low load BOD out to the municipality or plant waste water system.
Many plants use conductivity measures to determine where to divert the waste water flow. The problem with this approach is that it often errors on the high side due to caustic chemicals presence in the waste water. This error leads to overloading the high BOD treatment system at the plant and often pushing the pH levels to unacceptable levels.
The turbidity sensor allows instant and accurate monitoring of the media and product changeovers or CIP programs.
During the phase separation of the media or during the start-up and emptying of the process, the media must be differentiated. The turbidity sensor can detect the instant a liquid media reaches a pre-defined specification, automatically switching media to its appropriate container, and thereby significantly reducing BOD costs in waste water.
The infrared light is directed to the center of the pipe. This eliminates any potential variances caused by temperature, changes in viscosity, or build-up on the pipe. The measurements are always accurate and repeatable.
|Enter current and target waste load in pounds of BOD5 per thousand pounds of milk processed|
|Enter daily production in thousands of pounds of milk|
|Multiply current and target waste loads by daily production to find daily waste load in pounds|
|Enter your BOD5 surcharge cost per pound|
|Multiply the daily waste load by the surcharge cost to find your daily surcharge cost|
|Enter the number of days your plant operates each year|
|Multiply the daily surcharge cost by the number of days your plant operates annually to find the annual surcharge cost|
|Subtract the annual surcharge cost for the target waste load from the annual cost for the current waste load to find your annual savings|