This is a test that measures the Chemical Oxygen Demand (COD) in water! COD is a measure of how much oxygen needs to be consumed in order to chemically react with the organic matter in a solution. In other words, COD measures how much organic matter is in a solution by asking "how much oxidation would need to happen to eliminate all these organic compounds?".
It also happens to be a very colorful test.
Thursday, 15 March 2018
Friday, 9 March 2018
Is this what you thought a sand filter would look like? This is our new state-of-the-art sand filter device that we use to pre-treat water that goes into the AOS Prototype, ensuring the water doesn't contain excess levels of solids and other troublesome materials before it enters the AOS.
Friday, 2 March 2018
Have a peek at some pictures of BioLargo Water lab members at work!
|AOS Technician Ted is testing out a new pump prototype|
|Lab meeting time!|
|New AOS Prototype canisters constructed, ready to be assembled with interior components|
Thursday, 22 February 2018
Recently, scientists from BioLargo Water were fortunate enough to enjoy a private tour at Gold Bar, Edmonton’s largest wastewater treatment plant. Gold Bar is owned and operated by EPCOR, Canada’s oldest municipally owned utility company, and is one of Canada’s largest Class IV wastewater treatment plants. This tour was an excellent opportunity for our junior scientists to learn, in-person, about the operation and challenges of a large wastewater treatment plant.
The Gold Bar plant has a capacity of 310 million liters per day and serves a population of around 1 million people. Its treatment process consists of pre-treatment in grit tanks, sludge separation in primary clarifiers, breakdown of dissolved organics in a biological treatment process, and tertiary treatment using UV disinfection before discharge into the North Saskatchewan River. The whole process takes 18 hours!
At BioLargo, we intend to offer our Advanced Oxidation System (AOS) as a tertiary treatment for wastewater treatment plants like Gold Bar, replacing UV disinfection – with our lower energy cost per unit of treated water being the principle value proposition.
Gold Bar staff were awesome – they were friendly, helpful, and educational during our tour, and we look forward to the possibility of working with them in the future!
|Gold Bar Wastewater Treatment Plant|
Friday, 16 February 2018
Why do we treat water?
While a big part of why people invest so much in water treatment is to remove contaminants like toxic organic chemicals and inorganic contaminants like salts and metals, often the most pressing threats in untreated water are pathogenic organisms. Pathogens are microscopic organisms that include bacteria such as E. coli and Salmonella and viruses such as norovirus, but can also be parasitic protozoa such as Giardia lamblia, the organism that causes "beaver fever". These organisms are often more difficult to kill, and can cause serious illness if ingested.
Until recently, we at BioLargo Water focused much of our research on our Advanced Oxidation System's (AOS) ability to kill bacteria and viruses endemic to industrial livestock and agricultural wastewater treatment settings because of large market pull from those industries. Just recently, however, we started a research project to prove the AOS can kill protozoa like Giardia.
This project is in collaboration with Hyperion Research Ltd in Medicine Hat, AB, and is funded by an Alberta Innovates Microvoucher!
This project started early this year, and we already have results that suggest the AOS may be a powerful means to eliminate two protozoan parasites from water: Giardia lamblia and Cryptosporidium, another troublesome water pathogen. These results give promise that the AOS could provide an effective and cost-efficient treatment for water containing protozoan parasites!
All around the world, fresh water sources can be contaminated with these types of organisms – soon the AOS may provide an effective and inexpensive solution.
We would like to thank Alberta Innovates for funding this research through a Microvoucher grant, and Hyperion Research for conducting the protozoa enumeration and viability testing.