We are starting a 7 barrel brewery near Vancouver, Canada. Our inspectors are pretty picky about what we send down the drain. Here are the effluent parameters that the town requires:
pH - between 6 and 9.5 for a one day sample, between 5 and 11 for two hour sample, and 5.5 and 10.5 for a quick grab sample)
Suspended Solids- 600 mg/L one day sample, 1200 mg/L for two hour composite sample, and 2400 mg/L for a grab sample.
BOD- 500 mg/L one day sample, 1000 mg/L for two hr sample, 2000 mg/L grab sample
COD- 750 mg/L one day sample, 1500 mg/L two hour composite sample, and 3000 mg/L for a grab sample.
Our plan is to side stream as much of our spent grain and yeast as possible (giving it to farmers) to reduce our BOD/COD. For our cleaning chemicals our CIP water will go into a sump (downstream of the floor drains, upstream of the bathrooms) and be pumped into a plastic holding tank to manually monitor the pH and dose it with something to get it in range before sending it down the drain. I'm assuming our pH balance will be much more basic than acidic, so needing to add some sort of acid to neutralize. Has anyone done something like this?? Can anyone recommend a model of plastic tank for our CIP water?
Also, wondering about a solids interceptor. We will try and get our floor drains to have a small catcher at the end with a screen, but wondering if any one has put in a solids interceptor and the flow rate spec I will need on it for a 7 barrel brewery. Any recommendations on stainless floor drains that I can pickup locally in Vancouver? I really like the look of slotdrainsystems.com slot drains with the small catch basin at the end, but are a little pricier than I would like, especially considering shipping.
Any other recommendations for our waste water?
I've been probrewer lurker for a while, appreciate all the info you guys have provided! Thanks guys.
pH - between 6 and 9.5 for a one day sample, between 5 and 11 for two hour sample, and 5.5 and 10.5 for a quick grab sample)
Suspended Solids- 600 mg/L one day sample, 1200 mg/L for two hour composite sample, and 2400 mg/L for a grab sample.
BOD- 500 mg/L one day sample, 1000 mg/L for two hr sample, 2000 mg/L grab sample
COD- 750 mg/L one day sample, 1500 mg/L two hour composite sample, and 3000 mg/L for a grab sample.
Our plan is to side stream as much of our spent grain and yeast as possible (giving it to farmers) to reduce our BOD/COD. For our cleaning chemicals our CIP water will go into a sump (downstream of the floor drains, upstream of the bathrooms) and be pumped into a plastic holding tank to manually monitor the pH and dose it with something to get it in range before sending it down the drain. I'm assuming our pH balance will be much more basic than acidic, so needing to add some sort of acid to neutralize. Has anyone done something like this?? Can anyone recommend a model of plastic tank for our CIP water?
Also, wondering about a solids interceptor. We will try and get our floor drains to have a small catcher at the end with a screen, but wondering if any one has put in a solids interceptor and the flow rate spec I will need on it for a 7 barrel brewery. Any recommendations on stainless floor drains that I can pickup locally in Vancouver? I really like the look of slotdrainsystems.com slot drains with the small catch basin at the end, but are a little pricier than I would like, especially considering shipping.
Any other recommendations for our waste water?
I've been probrewer lurker for a while, appreciate all the info you guys have provided! Thanks guys.
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