Hi all,
I am just trying to understand the mechanism and chemistry behind the situation happening in our application.
Wastewater comes in a pipeline, and low DO in water, bacteria, organics, H2S occurs. Does it occur in gas form or dissolved in water? If both, which would be dominant? My...
Hi all again,
I am here to get help from those lucky engineers who solved all their problems with watercad and can use it whatever way they want.
Here is my deal...
I built the system, reservoirs, pumps, junctions, hydrants, gpvs, entered all elevation information for them, pump curves, gpv...
Hi all,
I am a newbie at WaterCAD, kinda know what I am doing but I need some help from advanced friends.
If there is a way to change the default pipe size while you are modeling a system, it would be really helpful. Right now When I put the junctions, it is always 6" ductile iron pipe, can I...
Hello,
We are designing a chemical phosphorus removal system for a WWTP. We will use ferric chloride as our coagulant. But I am trying to decide what kind of polymer we should use as coagulant aid? And which polymer feeding equipment? This system will be a backup for biological system but we...
Hi,
We are designing a phosphorus removal system for a wwtp. and we r gonna use feeric chloride as a chemical, we are gonna buy it at 35% concentration and dilute it down to 1-5% adn pump about 50-250 ft before primary clarifiers after them and stuff, but in a book it says this is unnecessary...
Hi All,
With new regulations, we have to decrease the floride concentration in the wastewater before giving recieving stream. We will use ferric chloride to react with floride and we will have 2 solid products. We think to feed ferric chloride after aeration tank going to detention tank to...
Hi,
we are designing some piping and tubing for WWTP. We will use ferric chloride at 5% and 35%. We will normally use PVC piping but at 5% it may contact some metals.what kind of metal should we use? I kinda researched it and only titanium looks corrosive resistant to ferric chloride but we...
Hi All,
With new regulations, we have to decrease the floride concentration in the wastewater before giving recieving river. We will use ferric chloride to react with floride and we will have 2 solid products. We think to feed ferric chloride after aeration tank going to detention tank to...
I have a question about a water treatment plant. We will replace an existing iron remover filter with a new one but the new one we r buying has same influent elevation but after water enters the filter it enters the system at different elevations, I mean the new filter is taller than the...
Hi all,
I am new at this job and it is more mechanical but I am a chemical engineer anyway...I have an airline and I wanna regulate this to some specimens about 10-20 psi but in the future I may need bigger load and higher presuures about 100 psi so do u know any regulator which gives an option...
hi,
I am new to forum and USA and I really need help. It is one month now still looking for chemical engineering job in chicago area and couldnt find anything...Can anybody advice me where to go whatto do?I am using these internet agents but they r discouraging me but nothing...I joined one of...
