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...
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...
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
Folks,
In our plant, we need to monitor Piping components in VOC as well as HAP services. Leak levels are defined as 10000 ppm for VOC and 500 ppm for HAP. Many components are identified to be both in VOC as well as HAP service. Pls clarify whether these services to be monitored for both VOC as...
Hi folks, I have three questions needing some help.
1) We are designing a ofshore platform topsides involving no processing but manifold and pigging facilities. Since no produced water treatment is involved, can anyone suggests applicable Oil in Water (OIW) limit for the intermittent discharge...
Would appreciate your help in guiding me with standard practice in the Industry for our new petrochemical plant:
Our project has special specifications for Leak Detection and Repair (LDAR) program which basically is about field monitoring requirements for controlling fugitive emissions. I guess...
We are having an existing WWTP but with expansion, it needs to handle excess sodium suplhides. What is the threshold limit for this is bio-unit? If I can sufficiently aerate the sulhidis stream, thiosulphates can be formed which exert lesser BOD. These thiosulphates pose any problems in Biounit...
We have new plant coming up. Per new regulations, LDAR is to be based on 10000 ppm of VOC. Point source emission standard is also specified with 10000 ppm for all pumps/compressor seals, valve packing and flange gaskets which are in the fluid service containing >10% VOCs. Since the standard for...
We are going for vent scrubber for our HCl bulk storage tank. Process data sheet needs a limit to be specified for HCl limit post scrubber. Regulations do not specify any limit for this case. Only found a limit for HCl manufacturing industry, but not for storage vent limits.
Your help will be...
We are installing a Liquid Waste Incinerator and is in the stage of Bids evaluation. Environmental regulations stipulate limit on 'Visual Emissions' as "10% Opacity" for Flue Gas. In order to meet this, one leading Supplier used cooling of scrubber water for bringing down the water vapor content...
