Kategoriarkiv: Wastewater Treatment

The Future of Sanitation Education

At a symposium hosted by the Kretsloppsteknik group, Dr. Mariska Ronteltap of the IHE Delft Institute for Water Capacity Building presented her perspective on what the future of sanitation education could look like. Why is it important to build capacity in the WASH sector? How can we do it through innovative teaching methods? How can MOOCs, Online Learning, Professional Diploma Programs, Active Learning, etc. towards sanitation education? Learn about this and the one-year Masters Programme in Sanitation being developed by IHE in Dr. Ronteltap’s presentationPost published by Prithvi Simha

Source separation: the future for efficient resource recovery

What is ‘New Sanitation’ according to Professor Grietje Zeeman from Wageningen University in the Netherlands? How has the practical experience been so far with the upflow anaerobic sludge blanket (UASB) reactor for blackwater treatment and bio-flocculation of greywater? Can micropollutants be mitigated through composting of anaerobic sludge? Are heavy metals from wastewater really a problem in agriculture? Interested in learning more about how these technologies have been applied at full scale in Sneek, Venlo, Wageningen and The Hague? Click here to access Professor Zeeman’s presentation.Post published by Prithvi Simha

Sustainable technologies to meet the future needs for sanitation

Is it possible to reduce the water footprint of a city to 1/10th of its current value without sacrificing any comfort? What does circular economy mean for sanitation systems? How important is phosphorous for food production? How can source separation systems improve nutrient cycling in the environment? Can we produce biodiesel from algae grown in urine? Professor Petter Jenssen from the Norwegian University of Life Sciences explores these questions and many more in his presentation which can be accessed herePost published by Prithvi Simha

Emerging solutions to the water challenges of an urbanizing world

How do we tackle the unprecedented increase in nutrient emissions in the world? How much nitrogen is emitted by agriculture and wastewater treatment? In her presentation at SLU, Professor Tove Larsen from EAWAG, Switzerland analyses the current wastewater treatment situation in various regions in the world. She suggests urine source separation can be part of the solution to address global nutrient emissions. To know more about this and other aspects such as the Blue Diversion Toilet and the Eawag water hub, check out Prof. Larsen’s presentation.Post published by Prithvi Simha

Improving wastewater treatment plants for increased nutrient recovery

Dr. David Gustavsson, Research Leader at Sweden Water Research loves centralized wastewater treatment plants! He starts his presentation saying…“I really love these plants”. At a symposium filled with people discussing the possibility of taking sanitation off the grid, that’s quite a statement to make. Jokingly, he further comments, “....should I leave now?”. How good are centralized WWTPs in removing unwanted substances? In nutrient removal and recovery? Is there a case to be made for the co-existence or indeed, the integration of urine diversion with the operation of such plants? How will WWTP operations be affected with increased urine diversion at source?

Click here to access Dr. Gustavsson’s presentation to find out more and let us know what you think!Post published by Prithvi Simha

Research shows Biochar is efficient in removing pharmaceutical residues at onsite sewage facilities

In a very recent study published in Science of the Total Environment, Sahar Dalahmeh, a researcher at the Environmental Engineering Unit, and her co-workers investigated the potential of biochar filters to replace or complement sand filters for the removal of pharmaceutical residues from wastewater in onsite sewage facilities.

In particular, their study examined what effects biodegradation, adsorption and a combination of these processes have on the removal of model pharmaceutical substances from wastewater. They used biochar filters operated under hydraulic loading conditions mimicking those found in onsite sand infiltration beds. In a 22-weeks experiment, concentrations and removal carbamazepine, metoprolol, ranitidine and caffeine were investigated in four treatments: biochar with active, biochar with inactive biofilm, biochar without biofilm and sand with active biofilm. They conclude that biochar is a promising filter medium for onsite sewage facilities, especially for persistent pharmaceutical residues such as carbamazepine and metoprolol.

Interested in reading more? Follow the below link to access the full publication:

Dalahmeh, S., Ahrens, L., Gros, M., Wiberg, K., & Pell, M. (2018). Potential of biochar filters for onsite sewage treatment: Adsorption and biological degradation of pharmaceuticals in laboratory filters with active, inactive and no biofilmScience of The Total Environment612, 192-201.

You can read more of Sahar’s work on ResearchGate or get in touch with her at Sahar.Dalahmeh@slu.se

 

Potential of biochar filters for onsite sewage treatment

Posted by Prithvi Simha