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Thanks Canuck67. I will be onsite tomorrow to have a look at the equipment and will update.

Thanks. A series of tanks is essentially a septic tank. The principal is the same. A series of tanks could also be used to treat organic matter. I am thinking to use a shallow tailing pond with turfs stone bottom that an excavator could feel when removing sediment. Overflow would be discharged...

Anybody have experience treating water used for cutting granite stone. It is a small operation. I was thinking pretreatment with septic tanks and discharging to a pond. There is no municipal sanitary sewer on the site.

I am using a program called "storms" created by the manufacturers of SWMHYMO. I have made a 24 hour Type 2 distribution SCS storm file. I know need to transform this information into a 6 hour .stm file and a 12 hour .stm file so I can complete my modelling. Any input into this would be...

I have made many calls, and have seen prices ranging from 2k-5k per meter. I thought it may be possible that someone on this site has actually gone through the design, tendering and construction process for an intake. What the tunneling companies say and what it actually costs in the field...

Hello, Does anyone have some water intake plans I could have a look at? I need to core through 90m of granite bedrock in order to install the intake. The size is 300mm dia. Also, any idea on the approximate cost per meter for the intake through bedrock??? Thanks Joe

look like a h type flume will work: http://www.openchannelflow.com/products/flumes/h-type similar to v notch I suppose.

I found some information on the internet: In talking with customers about weirs, we run into two common misconceptions. The first misconception is that weirs can read down to zero – that there is no minimum head. The second is that weirs are more accurate at these flows than flumes...

Thanks Bimr. We have a private sewage system for a campground. Sewage flows via gravity to a series of septic tanks. In order to meet regulatory objectives, we are required to reduce phosphorus to to 1.5mg/L. We are proposed a intermediate clarifying tank that will be put inline after the...

I have an alum dosing pump connected to to an ultra sonic flow meter which reads the flows through a 4" flume in a manhole. My peak flows are about 3 gpm, and the a 4" palmer bowlusflume effectively operates in the flow range of 5-55 gpm. I am concerned that the flow measurements will not be...

thanks gents

Hi, I have a green roof which I would like to use flow control roof drains on to control post development flows. First off, how would you go about modelling a green roof? I know the roof is 100% impervious beneath the green roof, but I don't think I should use this since some water will be...

I also have another problem. At the shoreline, I only have about 3 feet of depth from the water surface to bedrock. Has anyone ever installed a shallow raw water intake. My fear is it getting hit by boat traffic and of course freezing. Any thoughts?

Bimr, The intake is into a lake, about 250m. We will require the first 100m or so to be dredged or directional drilled to obtain sufficient cover over the intake since it is shallow before the water drops off. If you directional drill, how can you ensure the pipe wont float in the future? I...

Bimr. Is the assumed pressure drop for a 25 micron filter the same as a 1 micron filter? Thanks for your help.

Thanks BigInch. How do I find pressure losses through a series of cartridge filters? DO you have a sample spreadsheet on hand?

I am looking for some input on how to size a water intake. It is for a smaller distribution system. Phase 1 max day is 882m3/day and ultimate is 3628.8m3/day. The intake has to be HDPE, and I think it will be in the 300mm diameter range. Also, are there manufacturers in Ontario that supply...

Hi, I am looking for a program that can model small water treatment systems for camps and resorts. Basically our set-up is always an intake from a lake source to a low lift pump station through treatment (filters, uv, chlorination) and then to a holding tank or standpipe. How can I model the...