Who We Are
Mill Street Brewery is a local Toronto craft brewery committed to brewing award-winning beers while implementing environmentally sustainable practices and initiatives
What We Are Doing
As the largest producer of certified organic beer in Canada, Mill Street has switched to North American organic malt from European organic malt for our flagship Original Organic Lager in order to reduce shipping distances
Constantly exploring local and seasonal raw ingredients for use in our beer. (ongoing initiative).
Oct 2013 update: 100% of our certified organic pale barley malt is Canadian grown & processed. Barley is grown in SK & AB, and malted in Thunder Bay, Ontario.
RESOURCE / ENERGY REDUCTION
Switched from bagged organic malt to bulk organic malt to eliminate packaging material
Most of our bottles have silk-screened labels which allows us to save energy and resources when re-using and washing bottles
We strive to increase the efficiency of our production process in order to get the maximum use out of our ingredients and energy expenditure
Eliminated all phosphorus-based cleaning chemicals and replaced them with environmentally friendly cleaning chemicals.
Installed a heat recovery system on the brewhouse’s kettle stack. Recovered energy is used to heat >15,000 litres per day of water to 90°C without any additional energy input. This water will be used in the brewing process and for equipment cleaning.
New state-of-the-art Freeaire walk-in fridge reduces energy consumption significantly over conventional commercial walk-ins by using cold outside air to increase efficiency.
We shut our boilers down when not in use to reduce energy consumption.
Clean in Place (CIP) System
– Reduces water & caustic usage plant wide
– Allows for more efficient cleaning of tanks & packaging equipment
– Reduces water specifically being used for every hL of beer produced
Oct 2013 update: now online & currently in use daily, allows us to use the water & caustic for cleaning equipment & tanks more efficiently, allowing us to do more work for the same amount of water & caustic consumed…we have just started using the CIP system to clean & sterilize the beer & can fillers, this will also reduce the water going to the drain.)
– Reduces the amount of filtering powder required
– Allows for better yeast handling, reducing plant effluent & B.O.D (biological oxygen demand) in the waste water
– Going forward, will reduce the amount of beer shrinkage on the brewing side of production, increasing brewing efficiency
Oct 2013 update: now online & currently in use daily – allows us to move towards better & better liquid efficiency, better use of our available tank space, better yeast handling & disposal (we are able to put more waste yeast to the spent grain bin & way less yeast to the drain)…the goal is always to reduce the volume of water used compared to how much beer produced
– All pumps are changed over to run at 575 volts as they each come up for maintenance or need to be replaced
– Ongoing maintenance project going forward with the goal of using less electricity
– Running at the 575V mark reduces power consumption as the pumps will run more efficiently
New heat exchanger to heat up our main hot water tank – super high efficiency (will reduce the steam load on our boilers & therefore reduce energy usage by the boilers going forward)
ENERNOC program. We are currently actively working with the city of Toronto who watch our water usage & alert us to available ideas & programs to help us reduce our water/energy consumption…for instance, during high energy demand days in the summer, we are part of a program where we voluntary turn off the cooling jackets on our fermenters (that are already cooled) during peak energy demand times(4 or 8hr blocks) to save energy for the company & overall power grid.
For more info: http://www.enernoc.com/for-businesses/demandsmart/in-canada
Exploring the use of mechatronic variable-speed drive technology on our pumps for higher efficiency and reduced energy cost. The new technology is created by Toronto-based InMotive. For more info: http://www.inmotive.com/
RECYCLING / WASTE MANAGEMENT
Waste Diversion system now online: We continually improve our plastic & cardboard recycling program, as employees have taken ownership and made huge strides in trying to reduce our waste to landfill.
Returned packaging waste material is bundled and shipped off for recycling (includes cardboard and shrink wrap).
All our skid wrap is made of 100% compostable & biodegradable material
Our bottles are designed for maximum re-use. Our bottles are sorted and returned in partnership with the Beer Store.
All brewing & plant cleaning chemicals (acids, bases, detergents, etc) are now being stored on spill proof skids throughout the plant
Ensuring that our spent malt is recycled for re-use as cattle feed
– Yeast, along with our current practice of collecting our spent grain is being reprocessed into cattle feed by an outside company
– See “Centrifuge System”
Mill Street has been working with Enbridge Gas to reduce our consumption. The savings shown are based on 2013’s consumption so we will actually save more every year that we produce more. Enbridge will pay up to 50% of a project based on how much gas we save.
Here is a basic rundown of what we have done so far:
1. Purchased and Installed high efficiency Heat Exchanger for our brewing water
2. Insulated heat exchanger and hot liquor tank
3. Insulated exposed steam lines throughout plant
4. Insulated Steam main and header inside boiler room
Estimated Gas Savings: 105,917 cubic meters per year
Cost Savings (@ $0.30/m3): $31,775.15 annually
Total Project Cost: $16,605.00
Enbridge Rebate: $8,302.00
Payback Period: 0.26 years
Currently working on another project to replace our current boiler blow down tank with a unit that has heat recovery built in. The benefits are:
1. Pre-heat our boiler feed water before it enters the tank
2. Cool our blow down water before it goes to drain
3. Capture flash steam from blow down and utilize steam to further heat our boiler feed water tank
Here are my expectations coming out of this project (December 2014):
Estimated Gas Savings: 16,878 cubic meters per year
Cost Savings (@ $0.30/m3): $5,063.40 annually
Total Project Cost: $12,490
Enbridge Rebate: $6,245.00 ** (Specialty rebate based on current Enbridge campaign)
Payback Period: 1.23 years
If you group it all together as “2014 Gas Savings” it will look something like this:
Estimated Gas Savings: 122,795 cubic meters per year
Cost Savings (@ $0.30/m3): $36,838.55 annually
Total Project Cost: $29,095.00
Enbridge Rebate: $14,547
Payback Period: 0.39 years