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I need some guidelines in regards to Multimedia Filters bed dephts. Specially on the gravel support layer. I have found on my system that there´s media leaking downstream and my first guess is that the gravel layer is too short. By the way, is there any difference between layers depth when...

We are using a ballasted clarification process in which we use chlorinated surface water (using chlorine gas) so the residual chlorine just upstream the clarifier is around 3 ppm. The issue I want help on is if there's any experience that shows this "high" residual chlorine can affect the...

Hi all: I'm looking after help here. It happens that we will be manufacturing 6 PV starting next week and I'm concerned in regards to code compliance of my vendor, so we are planning to "hire" a third party audit/inspection (freelance or company)so everything can run smoothly Any help is welcome

I need some help to find references (companies) that can provide a DRA (Drag Reducing Agent) on Natural Gas Pipelines (on single phase). I have surfed through the web but the info has not been very useful. Any feedback is well received

Can anyone tell me if there's a theoretical relation of Kg Alum vs Kg P removal. Thanks

Thanks you all for your feedback, specially bimr for the valuable link. I have now my own conclusions

This is the web site of the company that approaches me http://www.ecospecsingapore.com/

Have anyone of you have heard about "Bac comber" chemical free water treatment technology? If so does anyone have any feedback on their application on large industrial systems. So far I have found they have some source of experience on the residential field. FYI, I have been approached by a...