1 gpm per cubic foot of resin is a better number than the RH suggestion. Our recommendation is 8 - 40 BV/h. 1 gpm/ft3.
Gary Schreiber, CWS VI
The Purolite Co.
All of those you named are viable techniques. Which one would be best for you depends upon the analysis of the water to be treated and the use for the treated water. You can post the analysis here to get other responses or I would be happy to assist you if you send me the info...
A quick test for oil in water is to flake off some flakes from a Camphor Stick (available in most Pharmacies) into a bowl of water. If the flakes spin there is no oil. If they do not spin oil is present. Not a quantitive test but one that indicates presence. Subject lab tests will give the...
Most all Architect's I have dealt with either have Mech. E's on staff or work with an outside Mech. E. companies for those design factors.
Gary Schreiber, CWS VI
The Purolite Co.
Here is a link to one installation web site:
http://www.dtic.mil/cgi-bin/GetTRDoc?Location=U2&doc=GetTRDoc.pdf&AD=ADB224310
Gary Schreiber, CWS VI
The Purolite Co.http://www.dtic.mil/cgi-bin/GetTRDoc?Location=U2&doc=GetTRDoc.pdf&AD=ADB224310
Dissolved Ferrous Iron and chlorine form Ferric Iron. Done all the time in the Water Treatment Industry. Oxidize the iron with chlorine and then filter it. I have seen many "orange" swimming pool waters. Much of that Ferric Iron ending up on the bottom of the pool.
Gary Schreiber, CWS VI
The...
Most membrane manufacturer's and supplier's that I know disclaim using membrane (RO, UF, NF, MF) for bacteria removal. Bacteria can grow thru the membranes.
I agree with the previous statement by Purewater guy:
"Also been reading Reverse Osmosis is not a good source for Gram Negative Bacteria...
You need to have whoever tested the water to identify which "Gram Negative Bacteria" is present. Just saying Gram Negative Bacteria is way too general. It encompasses a whole lot of bugs. Some good for us. Some bad for us.
Gary Schreiber, CWS VI
The Purolite Co.
I agree with bimr. Morpholine is also fed to be carried over in the steam to prevent corrosion outisde of the boiler drum.
Gary Schreiber, CWS VI
The Purolite Co.
Increased chlorides in the soft water is typically due to insufficient rinsing of the resin bed during the regeneration cycle. I suggest that you either increase the length of the slow rinse or the fast rinse time. Try increasing slow rinse time first. You can also do a Brine Elution Study to...
In addition to, and I personally believe is better, is to use tannin removing ion exchange resin for your application. Most of the ion exchange resin manufacturers make special resins for this purpose. The resins are regenerable on site using sodium or potassium chloride salt. The...
I agree with bimr. Softeners are not good at filtering particulate. Either adjust the pH or install a prefilter before the softener.
Gary Schreiber, CWS VI
The Purolite Co.
The only limit is not having enough freeboard. That rule of thumb is a good one BUT that all depends upon the make up of the solids that the resin bed may filter out or the resin fines (broken beads) that backwashing causes. I am not personally aware of having too much freeboard being a...
You can find that info on most ion exchange resin manufacturers Technical Data Bulletins. "In general" 75% freeboard based on 50% bed expansion is okay to use. However, 4 other factors come into play.
1. Is is cation resin or anion resin or mixed bed resin.
2. What is the water temperature...
