For Environmental Engineers, specially in Permitting, Pollution Prevetion, Water/Wastewater Engineering, Waste Management, may I know which professional body offers best services (including regular Magazine). I understand UK HSE, AIChE are few but want to know more options.
Regards
We have a brackish water RO plant with its reject stream having 30000 ppm of TDS. Mechanical Spray Evaporation Pond is now being proposed to concentrate the brine before it is sent to Crystallizer. The point is - till what concentration the brine needs to be concentrated without having any...
We have a De-Oiling eXtraction (DOX) unit in our cracker complex under construction. It separates oil from quench water thereby resuing the water back in quench while oil goes to wash oil network. But there is a sludge generation expected from colacser dirty backwash vessel. My first concern is...
I have some basic doubt on the Stability Class. I know my understanding of it has gone wrong but would like to get it right with your help.
Pasquill Index (A-E), a mesure of Atm. Turbulence, controls a parameter (Sigma x and y) in Gaussian dispersion equation. It is noted that 'A' is for higher...
A small query for dispersion modelling gurus.
There was a dispersion study carried out by Consultant for CO2 from Vent Gas in order to comply with occupational exposure of CO2. Wind Speed has been considered as 1 m/s as input to the model. Client asked to revise the modelling based on 'Design...
Dear members,
We are designing a offshore platform and have come across a basic question on design of hazardous open drainage. There are limitations in treating that and owner decided to collect the contents and ship to onshore. Having decided that they wanted to size the collection tank as...
Friends,
We have quite a few pumps in toxic service containing benzene from 1-10% in the fluid. Though we have no special requirements except limiting VOC emissions, Supllier is expressing concerns with their seals design with this service. Pls advise as to what should be the seal designs for...
Hi Guys,
We have Ethylene Tank in offiste whose PSV in vented`tio atm. Whole ethylene plant PSVs are routed to Flare but not this tanks PSV as itb has no enough pressure. I understand this is a standard practice. Our Client questioned this and wants the tank to have dedicated flare. Our defence...
Well, emissions are normally limited to working and breathing losses. But, after reading Barqueiroenmarte's posting (the link), learnt that flasing losses also estimated in some cases. There is a graph with pressure (psig) and production (bbl/day)to to decide whether to estimate the flash...
Hi Gare..
From what I know from refinery wastewater experience is that ammonia source is primarily stripped sour water. Ammonia levels in wastewater directly depend on the SWS efficiency for this pollutant. Normally, the wastewater is subjected to stripping by elevating stream pH. If you have...
While I am sure you would get more suitable replies from experts like Beychok, this is my small piece of it. I guess, you can apply standard guidelines avaialable such as "5 meters above the highest operator platform within 15 m radius of the stack". This is out of our current project...
We have 10 m3 of 35% HCl Holding Tank in our Utilities area. What are the vent controls required for this tank? Fume scrubers seem to be the order, but does this apply for our tank, being a small one? Seal Pot filled with Caustic solution will do? Also, some guidelines on how to estimate the...
Thanks to all you three guys. Some more observations/queries though:
1. Is it not common to have white plume? Is there any valid concerns with that? Regulations clearly exclude water vapor from the opacity measurements.
2. If it is worth suprresing the white plume, I guess excess operating...
Hi guys,
We are executing an incinerator. Flue gas has about 50% of water vapor in it and there will thus be a white plume. Client wants conservative height for the stack to avoid droplets falling around the area, as they did experience elsewhere. May I have your feedback/advice on how to...
Folks,
We need to meet mercury levels of 5 ppb (very stringent as learnt) in the produced water to be discharged from our offshore platform. Can you pls advise on how to meet this limit and if there are any good references to go by in your installations? Pls help.
Thanks in advance.
TechV
