Published by Jo Oh Hyeok in Case Studies
Hello everyone, I am preparing for feasibility study report about desalination plant. Due to busy schedule, we do not sampling to design desalination plant. If has desalination plant experience near Mozambique, please share the seawater quality.
Thank you
Category: Case Studies
I support the comments below that advise sampling is essential, that is unless it is a very small plant and you are able/prepared to risk having to make modifications during commissioning.
Sample not just for salinity but for temperature, suspended solids, organic material etc'. The sampling must replicate the proposed intake design - consider if it is beach well, nearshore, offshore and near surface or at depth. Sampling should ideally be over 12 months but at least 6 months covering both warm and cool seasons. Consider also some trials to validate the proposed pre-treatment. Good pre-treatment is the key to success and to design that you need good information about about the range of raw water quality.
I would also advocate for baseline environmental monitoring at the proposed brine discharge location and brine discharge plume modelling to ensure the risk of short-circuiting is minimal.
Lots of things to consider!
Published by Harry Beyer, Principal Water Engineer
Look up the Argo project, which has many operation CTD floats operating off the coast of Mozambique, you can plot these on google earth and get many months of data in public domain , the argo probes give very accurate salinity measurement in PSU and surface temperature. This is the most important first data. if you have no data on turbidity and suspended solids, then assume its bad and use a lamella clarifier as first step for pretreatment with a bypass (if turbidity is in reality low). IF algae bloom not a likely issue (i would not expect it there) then dont use DAF . I suggest deep bed gravity DMF with 1.5m of pumice or filtralite over 0.7m sand as pretreatment, this will prevent major biofouling of the RO (pumice and filtralite are excellent biological filters). Do not cover DMF , do not chlorinate DMF filters, Do not use UF/MF (nigthmares for RO biofouling) . Use pigging (eg Pigteck) for intake lines (use 2) instead of shock chlorination (far cheaper and far more effective, and no biofouling impact from dechlorinated organics on RO ). That is fast guide .
Published by Conor Kenny
I strongly recommend to do water analysis, be very attend to have seawater or brackish seawater in tide areas.
Published by HOFMANN Dieter
Mr. Hyeok,
If you send me the longitude, I can look up archival oceanographic data.
Dr. Tony Jones
Published by Tony Jones, Chair at Waterhound Futures
The technology selection depends on the nature of usage and consumption demand such as liter per capita per day or gallon per hour or per day. Then you can get a pre designed desalination plant that can be transported easily. I would suggest you to visit website of So~Safe Water Technologies the most reliable manufacturing company in all over the world. They can guide you very well and they may provide technical solution as well as they can provide services if you required.
Being expert of water quality, I am dealing So~Safe product in Pakistan since last ten years and I am satisfied with the product efficiency.
Published by Munawar Abbas, Director at Karakorum Scientific Traders and Consultants – So~Safe Water Technologies GB
We recently undertook a Detailed Feasibility Study of two large scale desalination plants near Durban. Mail me at Kevin.Meier@umgeni.co.za and I can send you details of the process we went through.
Published by Kevin Meier, Manager: Planning Services at Umgeni Water
The suppliers that would be interested in this job should be more than happy to test some samples that you could collect according to their instructions. These are basic tests that most people could run.
Published by Waymon Hofheins
@jo Oh Hyeok unfortunately we don't have values of a plant near Mozambique but we have design experience with a plant in the US. You can find more information here: https://youtu.be/USUCtgkF4uE
If you wish more information please contact us.
Published by Karl-Uwe Schmitz, President at Aqua Equip Technologies LLC (AET LLC)
Apologies, I am working off my phone, email: more@less.co.za.
Published by Raymond Less, Mr.
You are more than welcome to email me your details. I will gladly share your information with one of my partners with a brineless desalination system. My email ismoreRaymond Less
Published by Raymond Less, Mr.
You must collect reliable data over sufficient time period.
Published by Joseph Cotruvo, President at Joseph Cotruvo & Associates, Water , Environment and Public Health