disposal of high content CaCl waters
disposal of high content CaCl waters
(OP)
I have to dispose of 20.000 bbls of 40.000 ppm CaCl water. I dont have an injection well and would like to see if anybody has a better option than evaporation
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS Come Join Us!Are you an
Engineering professional? Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting GuidelinesJobs |
disposal of high content CaCl waters
|
disposal of high content CaCl watersdisposal of high content CaCl waters(OP)
I have to dispose of 20.000 bbls of 40.000 ppm CaCl water. I dont have an injection well and would like to see if anybody has a better option than evaporation
Red Flag SubmittedThank you for helping keep Eng-Tips Forums free from inappropriate posts. Reply To This ThreadPosting in the Eng-Tips forums is a member-only feature.Click Here to join Eng-Tips and talk with other members! |
ResourcesWhat is rapid injection molding? For engineers working with tight product design timelines, rapid injection molding can be a critical tool for prototyping and testing functional models. Download Now
The world has changed considerably since the 1980s, when CAD first started displacing drafting tables. Download Now
Prototyping has always been a critical part of product development. Download Now
As the cloud is increasingly adopted for product development, questions remain as to just how cloud software tools compare to on-premise solutions. Download Now
|
RE: disposal of high content CaCl waters
As simplistic as this may sound, I would think that addition of sulfuric acid, precipitating calcium sulfate, removal of that by sedimentation/filtration, and discharge of the effluent with any pH control or removal of other contaminants (which you did not indicate as being present) to either land or waterways, might be the easiest answer for you.
Dick Kersey
Orenda Technologies, Inc.
RE: disposal of high content CaCl waters
It's rather dilute, but CaCl2 solution can help clarify wastewater solutions. E.g., metal finishers who precipitate out heavy metals as hydroxides.
If you could concentrate the solution, it might be worth transporting. Do a search for dealers of wastewater treatment equipment; see if you can rent an 'atmospheric evaporator.'
RE: disposal of high content CaCl waters
Kenvlach is on the right track. If you are nearby, I wouldn't mind taking it off your hands if you can conentrate it a bit more and ship it here cheaply. There are several roads here in need of some quick dust suppression next spring!
Our environmental agencies are a little more forgiving for it's use as a dust palliative for rural roads.
KRS Services
www.krs-services.com
RE: disposal of high content CaCl waters
RE: disposal of high content CaCl waters
If you want to treat this waste onsite, the only thing that you can do is to evaporate it. Same treatment for potassium chloride.
You may consider offsite disposal. If all that you have in this wastewater is calcium chloride, then it can be blended into sanitary wastewater and discharged. Most sanitary treatment plants do not have limits on TDS and as long as the mixture is diluted into the wastewater, there should be no problem.
I don't think that you want to dump this material on roads since the stormwater runoff will kill vegetation.
RE: disposal of high content CaCl waters
I don t understand that. I´m going to test it. Hopefully the byproduct is not water soluble.
Over here you cannot dump chlorides in the waste treatment plants.
RE: disposal of high content CaCl waters
I don't think that you will be allowed to discharge an acidic solution. On the contrary, it would be less hazardous to just discharge the calcium chloride.
You can not precipitate calcium sulfate unless you have a basic solution. A basic solution is when the pH is above 10 units. To get a basic solution, you will have to add an alkali. Commonly used alkalis that are selected for this purpose are sodium hydroxide or lime (calcium hydroxide).
In summary, what the fellow recommended is to precipitate the calcium sulfate out of a sodium chloride solution. You would be left with the sodium chloride solution and some solid wastes.
Also, I did not say to dump the chlorides. What I said was that most sanitary WWTP would not be affected by calcium chlorides as long as the calcium chloride mixture is diluted into the wastewater. It is rare when discharges have wastewater dicharge limitations on TDS.
If you contract with a waste hauler who treats the wastewater before he discharges into the sanitary system, he is going to blend this into his other wastewater discharges and end up with a lower TDS.
Seawater has 19,000 mg/l of chlorides so if you have an ocean discharge, it should be no problem to discharge to the ocean. Ocean disposal would be preferable to dumping the calcium chlorides on the ground, wouldn't it?
Calcium chloride is commonly used in the northern climates as road salt, so it commonly enters the storm water systems in the cities and enters the wastewater treatment plants where there are combined sewer systems.
By the way, you haven't said if is there anything else in the calcium chloride soluton?
RE: disposal of high content CaCl waters
RE: disposal of high content CaCl waters
As for the comment about using it as a road salt, yes that happens, but only as a "pickling" mix in a sand pile to prevent it from freezing.
If you would like any more information, just ask. I can provide some information from a roads maintenance and operations perspective.
KRS Services
www.krs-services.com
RE: disposal of high content CaCl waters
RE: disposal of high content CaCl waters
http://personalweb.smcvt.edu/vermontlocalroads/FactShee...