My fellow Engineers, please excuse my ignorance on this subject for I am a not but a lowly chemical engineer. I have several questions relating to the grounding of hoses used to transfer flammable vapors from the headspace of a product tank to a treatment unit.
Currently, we use several...
DJBess,
There is some good information on the reaction of iron and peroxide at h202.com/applications/industrialwastewater/fentonsreagent.hmtl
Also there is some good information on the relationship of Iron(II)Hydroxide and Iron(III)Hydroxide as a function of oxidation state and solubility at...
devaxrayz,
I have done some work with a company called BJ Services doing chemical cleaning on equipment similar to yours. They can provide an evaluation and offer cleaning options. If interested you can call Larry Slabodnic at 909-357-8054.
Hope this helps
Chris Derrick
Thanks for the response SharkswithLasers. To the best of my knowledge there is no other way to remove chlorides from this type of water. But... I wanted to double check just in case.
Dear Experts:
I have been asked to find a way to remove chlorides from 2.1 million gallons of petroleum contact wastewater. Chlorides must be reduced from 850 mg/l to 500 mg/l (Cl-). This project is a one time treatment and discharge. Therefore, both RO and Ion Exchange are not economically...
I tried using Kynar Pumps for 93% sulfuric acid and it was a disaster. As for piping i dont know but I would recomend you research this very carefully before installing any Kynar materials on your Acid piping/pumping system.
Veta,
I think Moltenmetal is correct with respect to the Iron II oxidizing to Iron III. I have a similar situation in which the pH of a treated wastewater decreases with time. In my case we treat wastewater high in Iron II. Bleach is added to oxidize H2S and Oil and Grease is removed with a...
There is a pretty good bit of information on arsenic removal at: 2the4.net/arsencart
Included is a discussion of ferric ion coprecipitation of arsenic. This should tie into removal of Flouride with ferric chloride.
Also included is a rather extensive list of references relating to arsenic...
With NH4 at such low concentrations "Breakpoint Chlorination" should be investigated.
Try:
"Wastewater Engineering, Treatment, Disposal, and Reuse"
Metcalf and Eddy, published by McGraw Hill
or
"Chemistry for Environmental Engineering"
Sawyer, McCarthy, Parkin...
bimr:
The waste is all from the same boiler and was stored in one tank prior to treatment. This was a newly built boiler and thus were cleand to remove "mill scale". No one is really sure how such high levels of chrome made it into the waste water in the first place.
I used a...
Bimr:
Seems we got into a tussle over semantics and not real treatment technology. I should have said most of the iron and not All. This may be fodder for an inependent letter but.... I have a boiler treatment waste chelated with acetic acid, iron at 5-10,000 mg/l. Chrome +3 at 15-20...
Bimr:
I have to take exception with your response to my suggestions. I am quite familiar with sulfide precipitation and the sulfex process. However, my experience with EDTA chelated wastes is limited to boiler treatment wastes having iron concentrations as high as 10,000 mg/l and nickle...
I have strugled with this exact problem in the past. How are you generating the waste? Are there high concentrations of other metals such as iron, zinc, chromium, etc. The sulfide method probably won't be efficient unless you remove all the iron, and any other metals first. H2S can be avoided...
