Thanks for the insight I think this is exactly what I need. We will have to take a step back, take a look at the existing process and see about making some modifications. I appreciate the resources and discussion.
Just wanted to link this study done in Texas which has some additional insights. Their conclusion is as follows:
"In any calcite dissolution reaction, though it is possible to achieve finished water calcium hardness and alkalinity goals, final polishing by caustic soda dosing is required to...
Thanks for the responses. Below is a table indicating raw and post-RO parameters (from RO vendor's modeling). The final RO pH says 7.22, operators have noted permeate pH of between 6.8 and 7.4 from the existing RO they have. There is no CO2, and there is very little alkalinity. This is indeed a...
Sounds like the filter is too small for our flowrates. I had concerns about that but I wasn't sure if there were more resources on dissolution rates. As it is, the plant doesn't have much else to work with. The problem is they bought this system on the advice of their original engineer, who then...
Hello,
Background:
I am working on a potable project for some folks who are looking to add an RO unit to their potable plant. The plant has an existing RO that was built and permitted some time ago for Arsenic removal. They are adding a new unit to increase throughput as demands are increasing...
While this application isn't potable, but a bulk of the work we do is potable. In those cases 1503-44 seems spot on, especially with the "low" pressure point. My states regulation says no point in the distribution system can ever be below 20psi or above 100psi. In most municipalities here the...
Thanks folks this has really been an incredibly informative post for how to approach these issues. I can see the arguments both for and against adding air valves, and also ways to evaluate the hydraulics in before scenarios. I feel more comfortable approaching this now.
@LittleInch Thanks for...
The answers here have been extremely helpful. I just have a few clarifying questions, working backwards in responses.
@LittleInch "SDR11 is good for full vacuum, but it won't stand that if you implose higher loadings by putting it under water."
How do I know whether a pipe is good for full...
Hello,
I have come across a problem that has me running in circles. I have looked through previous posts discussing slack flow and siphon effects in various piping systems but I am struggling to apply it to evaluate my problem.
We are trying to determine a duty point to provide to vendor for a...
I do appreciate the perspectives.
I completely understand companies tracking on an annual basis, as that is the way my company does it. My end of year review is essentially a review of my utilization suite, and if I beat my targets that makes me eligible for a higher bonus which is determined...
Thanks all for the genuine responses. A few folks have suggested site visits so I have reached out to my team lead to try and visit some active construction which seems like a great idea.
@fel3
Thanks for the story that is a really helpful story and I appreciate you sharing that. For...
@TigerGuy
Do you have any anecdotes for making use of professional societies? I thought about joining a few but they each have membership fees so I wanted to make sure I take advantage of the membership properly, but I like the idea I will look into it further, thank you.
I do learn quite a...
Howdy,
I am an EIT at a civil consulting firm, just over a year of experience now. Sometimes things slow down a lot and the EITs don't have much work to do. Everyone always told me going into consulting meant I would be busy as hell at all times, but unfortunately it has not worked out like...
Hello,
I graduated with a degree in Environmental Engineering and have always wanted to work in the environmental field, primarily in treatment/remediation. Unfortunately this is not exactly a massive job field, so I currently work as an EIT at a civil consulting firm that does projects for...
