I am looking for any low cost technology for designing a water supply scheme for an elevated location, where water source is about 500m down, Stream source, discharge is sufficient but thinking we have to install pumping (many stages).
Electric cable is around 700m far from the community (Marginalized) for installation of Transformer and Cable connection cost may be high.
Source is North face , shadow zone, not sure can use solar power for pumping. There is not any alternative source for upper part for gravitational flow ( this is the top elevation) , there is 150 HH.
In addition to our suggestion and questions addressing your project "pumping water to 500 Meter" from some time ago, we would like to inform you, that we could identify these days by chance a special piston-based pump that is activated by the water from the source (creek or river e.g.) from which the water to be pumped to the user is extracted. No other kind of energy is necessary !
An very old, but interesting technology developed in Germany and realised about 300 times, some still in operation. The pump needs to be designed strictly adapted to the case, so a meticulous assessment is absolut necessary. We could support such work. Our contact: dr.peters.consulting@t-online.de
Dear Amitava, thank you for you suggestion, it is hill area of Nepal, Eastern part of Nepal , source is 250m below and water has to lifted and collection on the reservoirs and has to supply 57 household. Per person 110 l/d , Stream water so no problem on discharge
The total head required will be static 500 m plus friction head. Latter has to be calculated. You will be requiring two stage pumping. Kirloskar Pumps can do this job. You can send the details for calculation and selection of pumps.
Just have a google on "hydraulic ram" https://en.wikipedia.org/wiki/Hydraulic_ram . No need for electricity. And see if some of these suits you. Also pretty DIY. Can pump up to more than 1000m.
It is an interesting project! If the flow is 75 m3/d, I think that one of the solutions is that you use 1 to 3 inches steel pipe (depending on the daily operation time), more than 60 schedule (depending onthe calculation), and 2 to 3 pumping steps.
I am designing a similar solution for a bigger system (60 km; H
Assuming you find a way of elevating the water to the higher elevation and need a cheap low maintenance way of treating it, you may wish to consider the ClariWash filtration system which can be built in a workshop from drawings with reasonable quality control. See website www.waterreach.co.uk. Suitability will depend on local details.
Hi Kabindra WaterReach website gives the concept but I will need to send you detailed drawing depending on your exact flows and water quality. WaterReach is a not for profit co. If interested leave message on website with your email. Thank Nigel
Its quiet a problem you/they have.....you may think about using the stream to generate some power or if enough "fall" the ram pump.....however as written already...rainwater harvest at HH level is just the most economically and sustainable.....
if there is no viable alternative to lifting water 500+ m, then the objective should be to get the required energy as inexpensively as possible and to minimize the amount of water needed. the fact that the source is north facing does not eliminate the potential for using solar energy, the facilities for which can be placed elsewhere. a reservoir above the town will allow the maximization of pumping when energy is available and cheap.
Assuming each household will use about 500 liters per day, you need about 75 m3/day. It would be interesting to know what their current water source is - are they carrying water from the proposed source, or is there a closer spring that is insufficient, or are they collecting rainwater. An option is always to carry out a detailed rainwater collection programme such that each household has sufficient storage to carry them over the dry months during a 1:10 year drought. If the rainfall or roof area is insufficient, consider designing household storage to provide at least 100 liters per day for drinking and cooking. This would reduce the requirements for the high cost pumped supply. A grey water recycling system could also be considered to further reduce the need for pumped water. Ultimately though you will need to pump some of the water. Because of the very high head it is advisable to pump in stages (say 3 to 5), and power from the available electric cable may be the most economical and sustainable solution.
I have had to deal with similar situations previously.
The biggest problem is that new property developments overseas are very often totally uncontrolled! There seems to be a simple expectation that the responsible water utility has a duty to provide a water supply to any property.
This is partially true - But there are guidelines regarding 'reasonable' conditions.
To provide a potable water supply to high elevations, WILL require infrastructure reinforcement. This will generally involve pumps, new, often larger diameter mains, service reservoirs and additional water treatment. i.e. Capital Cost!
Who pays for this?
Harsh, but simple.... Build a property where a potable water supply is not currently available, then be prepared to pay for it.
In the UK this is called an Infrastructure charge, which is commonly levied against all new properties.
Water Utilities World-Wide, are cash poor. They cannot continue to supply a quality product unless properly funded.
On my opinion you can harvest rain water and keep in concrete tank of PE tank 2-5 m3. But if you want to pump the water from the reservoir which be very far and you need pump station may be 10 stations of pump and using solar power system and you can use hydroturbine when you flow the rain water in this village as well. Seem like you construct the new reservoir ehich close to your villadge us the best choice.
When you say 500 m down, I take it as a level difference between source and point of delivery. The maximum pressure on pipe will be 50 kgf/sqcm. + the head due to frictional losses. You should have given the desired discharge (liters per second or so). We have designed many water supply schemes, highest with 200 + meters total head; but your case seems to be unique. For the desired 'low cost' solution, you should break the rising main in several stages. Please give the length of the pipeline, which should be more than 500 meters. You can further interact on east5star@gmail.com
500 m is equivalent to 50 bar net operating pressure, so theoretically one well designed and manufactured pump could do this job. But you need to specify the exact volume of water to be pumped, e. g. in m³/day to cover the daily demand, or as peek value in m³/h. Is there treated wastewater available at this location ? Could allow to address a pressure exchange system. with very low electrical energy demand. But as "each case is different", what I call the "golden rule of chemical engineering", more details are necessary, including the questions "voltage at the near grid ?", "who pays ?" and "are there funds for consultancy support ?".
You still need several pumping stages and energy source for pumping. So my suggestion is look for alternative energy such as wind or solar. I assume hydroelectric energy is not feasible in your area.
Related to shadow zone, first you need to make a further feasibilty study to justify whether the area is applicable for solar power or not since nowadays there are many method for optimizing solar power.
One more thing, you also need to measure the height for elevated water tank if you want to distribute by gravity to reduce electricity usage.
Intake structure + pump through pressure filter - CWR - Single stage high lift pumping - to Service Reservoir at topmost level - Chlorination- Distribution network supply by gravity
Rain water can be harvested and stored directly in storage tanks. This water is potable after first rain and can be used for drinking purpose also. At height the sufficient velocity of air found, so you can use wind energy and also solar energy source.When perennial reliable and safe source is not available, pipeline from distant sources can be laid. This bulk water is available from river, pond, dam, bore wells or storage tank itself, where water is available. Water from source is treated at village level and even at household level, if needed. If bulk water available from the distant source is treated and potable, then further treatment may not be required at village level.