I do believe that it could still be beneficil, especially if you are running at a lowish recovery (say 70%).....you will essentially transfer the energy from your concentrate stream into the feed flow, reducing the size of your HP pump by 30%.
Disc filters, sand filters, screen filters....as you mentioned all could have problems with clogging depending on the amount and type of algae.
Given it is a lake it might be a better idea to look at putting in systems to stop in growing in the first place as apposed to systems to remove it.
"I would recommend becoming familiar with the activated sludge process including biological nutrient removal."
I guess this is the first step. I have metcalf and eddy wastewater engineering so i am sure it is in there! Just need to find it!
I am interested in the basic design of MBR systems.
Does anyone know of any good references/ text books etc to get a basic understanding of MBR design?
There is a cheaper source of water, but when that source of water is running out, government grants are plentiful for this type of project(In this country). (hence the shallow pockets comment - the capital costs will be covered by grants....it is the running costs that the client will be worried...
Purpose of recycled water is for boilers and cooling towers. The TDS is 1400mg/L so RO is definately required. And yes we are having terrific problems with the RO ;). I agree that the phosphate could be knocked out in the activated sludge plant with alum or ferric however the client has very...
So what are our options if the calcium phosphate is already formed before the UF(given that you mentioned that the lanthanum chloride) will not react with calcium phosphate......or if it is, should it be insoluble? (or is there any ideal pH range where it would be insolube and we could filter it...
ccor,
Do you have any additional information on the rapid small-scall column tests ?
I imagine that it involves running a sample of water to be treated through a very small amount of carbon and then testing for break through of contaminants?
We are currently running a trial plant on the wastewater from a food manufacturer. The existing plant is an activated sludge plant with the decant entering into a 100,000L tank before being discharged to sewer.
From this tank we are attempting to recycle the water using a combination of...
The chemically enhanced backwash, using the HCL happens every 24hrs under normal conditions, and every 8 hours when the raw water quality starts to deteriotate.
With regular CEB's occuring there is no requirement for an extended CIP clean.
"Moltenmetal" raised an interesting point, that being...
Thanks gr2vessels.
There will never be "drying" stage. The membranes will always remain wet. Basically, after the chemically enhanced backwash is complete, the system automatically goes into a filtration cycle wereby treated water will continously flow where the HCL solution was. There is also...
The application is a chemically enhanced backwash on an ultrafiltration plant (using Norit Xiga membranes)
The flow rate during the CEB is 60m3/hr, dosing 30% HCL at 1330mg/L , this occurs for a short period before 10 minute soak. The chemicals are then rinsed out using ultrafiltered water.
How would 316SS go within a water treatment plant wereby i am periodically dosing 400mg/L of HCL (0.04%) into a stainless steel line. At ambient temperature and a pressure of 1-3 bar.
I know that HCL has a severe effect on stainless at high concentrations but i am not sure at such a low...
I was just wondering what people's thoughts/experience was in regards to the having or not having back pressure valves and pressure relief valves in small dosing systems (3.5 - 130L/hr)
The Alldos pumps i am planning on using have there own shut off system in the event of high pressure (why...
Yeah it is the disinfection byproducts that i am worried about. Even if i remove all of the colour i would imagine that there would still be some dissolved organics that could form these by products when we disinfect?
I have sent the samples off for lab testing (colour) i was going to get them...
