Sterilization of lagoon water for reuse
Sterilization of lagoon water for reuse
(OP)
Hello,
Onsite we have a lagoon and we are trying to find a way of recycling it back into the plant. Basically we have decided that it would be best to recycle back to our tote cleaning area. Due to operating requirements we have to provide hot water that can be used as a wash and a rinse. The 'bugs' that would be in this water would affect some of our products. If the water is kept at 85C for at least 10 mins the 'bugs' would not survive. Does anyone have any suggestions of a hot water tank design that could assure this residence time?....I am thinking a baffled design
CHE51
Onsite we have a lagoon and we are trying to find a way of recycling it back into the plant. Basically we have decided that it would be best to recycle back to our tote cleaning area. Due to operating requirements we have to provide hot water that can be used as a wash and a rinse. The 'bugs' that would be in this water would affect some of our products. If the water is kept at 85C for at least 10 mins the 'bugs' would not survive. Does anyone have any suggestions of a hot water tank design that could assure this residence time?....I am thinking a baffled design
CHE51





RE: Sterilization of lagoon water for reuse
RE: Sterilization of lagoon water for reuse
RE: Sterilization of lagoon water for reuse
in what way do the bugs effect your process. Is the problem the bugs itself or the biofouling caused by the bugs. If the latter is the case you could do with discontinuous biocide dosage.
We had some nice experience with a bioprobe, the so-called biogeorge. It's a probe which measueres on line currents caused by microbiological activity. The moment one gets in the "danger-zone" the signal increases. I have maybe some info about it as a pdf, somewhere on my pc. If you're interested I'll see if I can find it.
Edwin Muller
KEMA Power Generation & Sustainables
Arnhem, The Netherlands
E-mail e.f.muller@kema.nl
Internet: http://www.kema-water.nl
RE: Sterilization of lagoon water for reuse
RE: Sterilization of lagoon water for reuse
We use 50 ppm addition rate in the summer, and drop down to about 15 ppm in the winter. We buy the hypochlorate for about $0.18/lb, so we spend about $500 a month in the summer to treat about 130 gpm. That $ number is for a bulk rate, and we keep refilling a 300 gallon tote. To inject the chemical we have a little LMI diaphragm pump that goes for about $800. So capex is about $1500 to get rolling; operating cost is based on your gpm. Hope this helps.
RE: Sterilization of lagoon water for reuse
CHE51
RE: Sterilization of lagoon water for reuse
Are your $ figures US or Canadian?
RE: Sterilization of lagoon water for reuse