How to minimize rainywater to the wastewater treatment system
How to minimize rainywater to the wastewater treatment system
(OP)
Recent frequent heavy rain makes us very difficult to treat "rainywater and oil" passing thru the oily sewer system into wastewater treatment system because of big flow quantity when it rains. Outside of the process area has clean sewers, so it's not a big concern. But, the problem is the oily sewer inside process area which can not separate rainywater from oil. This means that mixture of rainywater and oil is going to the wastewater treatment system when it rains with big quantity and it's big burden to our refinery's pollution prevention effort. So, in order to minimize rainywater into the oily sewer system inside process area when it rains, we cover oily sewer with round rubber. But this seems not good enough to contorl inlet flowrate of wastewater treatment system below design flowrate. So, ANYBODY WHO KNOWS THE SLOUTION OF THIS PROBLEM, PLEASE COMMENT. And,If there are good experienced companys out there, please let me know.





RE: How to minimize rainywater to the wastewater treatment system
RE: How to minimize rainywater to the wastewater treatment system
Solution might be to separate the combined sewer so that wastewater and storm runoff are collected in separate sewers. A retention basin / tank could be used to collect the storm runoff and hold it until it can either soak into the ground, or be treated by an oil/water seperator. Other best management practices could also be used such as sandbags around your inlets to keep the storm water out, more frequent cleaning to remove the oil from the ground etc.
As mentioned by sam74, to control infiltration you may need to repair your underground piping by replacing broken pipes and sealing the joints to keep storm water out and keep the wastewater in the pipes.
RE: How to minimize rainywater to the wastewater treatment system
RE: How to minimize rainywater to the wastewater treatment system
Based on above position we have right now and jmrosell's comment, could you(=jmrosell) tell me detail shape and basic concept of "stormwater inflow protector used" in your area. Your prompt answer would be very helpful.
RE: How to minimize rainywater to the wastewater treatment system
The stormwater inflow protector we use is basically a plastic dish that catches the water as it comes in and holds the majority of it until it can evaporate away. here is the link to the company we use website.
http://www.frwindustries.com/if/if.html