Storage and Transportation Technology: [Weekly Topic] How to treat hydrocarbon-containing wastewater after secondary water removal from liquefied hydrocarbon spheres?
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The project has encountered a problem: what should be done with the water discharged after the propylene spherical tank undergoes secondary water removal? Could the accumulation of liquefied hydrocarbons create safety hazards? Participate more – prizes available. Of course, if there are in-depth discussions and reasonable suggestions, there will be generous rewards.
We discharge it directly into the oily wastewater system; once the water is purified, the valve is closed immediately. The small amount of liquid hydrocarbons that are released evaporate almost completely, so it should be relatively safe!
The wastewater generated is discharged directly into the oily wastewater system; during dehydration, steam is used to blow away the resulting wastewater in order to prevent the accumulation of propylene, liquid hydrocarbons, etc
Reply to 2# lhyln: The concern now is that when waste is discharged in a sealed manner, the volatile liquefied hydrocarbons may accumulate. What kind of follow-up actions are required before considering discharging the wastewater to a treatment plant?
Steam blowing? How should the operations be designed? Please advise
Reply to 1# MintLife: Our seniors used to discharge everything directly into the sewage system; I am currently working on a liquid hydrocarbon project. In my opinion, it is advisable to use automatic water cutting; a vapor port should be installed on the top of the secondary water cutting tank to connect to the low-pressure gas line, with the wastewater being discharged directly into the sewage system. Since the secondary dehydration tank is at atmospheric pressure and the liquid hydrocarbons vaporize, there is generally not much liquid hydrocarbon in the wastewater, so discharging it into the wastewater system is safe.
Before entering the oily wastewater system, the drain outlet is located above the sewage well; if the drainage pipeline is completely sealed for waste discharge, how can one determine whether the water has been completely removed?
Our oily (hydrocarbon) wastewater goes directly into the tank; at the bottom, it is heated by LS and then sent to the flare, while the wastewater at the bottom is sent to the sewage treatment system
Reply to 7# lhyln: Install a level gauge in the water cut tank, and then it can be seen
Reply to 9# MintLife: The drain outlet of the water cutting tank is located above the sewage well, right above the outlet for oily wastewater