When Tiny Creatures Solve Big Problems: Wastewater Treatment With Microalgae
ฝัง
- เผยแพร่เมื่อ 1 มิ.ย. 2024
- Can we grow #microalgae in the #wastewater of greenhouses and why should we do it?
The wastewater of #greenhouses is not waste. This irrigation water, which is not used by plants, contains residual nutrients from fertilisers, such as nitrate and phosphate. Microalgae need these nutrients to grow, and when we cultivate them in the wastewater from soilless greenhouses, they extract these nutrients from the water as they grow.
It is important to treat agricultural effluents before they are released to prevent nitrates from accumulating in the environment. And with the circular concept of REALM, this treatment can be cheaper and more sustainable than conventional wastewater treatment systems.
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Funded by the European Union. Views and opinions expressed are however those of the authors only and do not necessarily reflect those of the European Union or the European Research Executive Agency (REA). Neither the European Union nor the granting authority can be held responsible for them. - วิทยาศาสตร์และเทคโนโลยี
Love to see these short videos succinctly explaining how a problem is being worked on. Gives hope for the future!
Happy to see that you are interested. Once more research has been conducted more videos are going to follow. So, stay tuned :)
02:35 if the water is rich in nutrients why do the algae need to filter it out for cleaning? What's stopping this water being irrigated again on the greenhouse plants? The nutrients were added as food for these plants, no?
Economics 🤷🏻♂️ it is cheaper to bring new water and add the nutrients recite, than to clean it and rebuild the original nutrients mix.
What @joaonavalho1201 says is correct. Cleaning the water is a cost factor. But purifying it through disinfection for instance is necessary to avoid the spread of plant diseases and crop losses. That's why irrigation water is not directly reused.
this is an interesting point from the CBA perspective, yet surely you would expect the technologies and processes involved in recycling agricultural wastewater today to be more streamlined and cost-effective and to allow for re-use? I don't understand much about water and re-mineralisation, etc... I am just now starting to work on an MSc environmental biotech research project involving MicroAlgae bioremediation of wastewater, and the topic is absolutely fascinating and complex, to say the least... but im yet to ascertain what are all the Carbon Emissions and Energy resources associated with the totality of the processes involved within this system. So it's interesting to look at all aspects of viability and sustainability. The biomass use part of it was not very well explained, and so far i feel that business owners are looking at this bi-product aspect as lucrative part of the process and perhaps disengaging themselves from the sustainability objective in first place. Something to critically review/discuss. many thanks @@esci