Water Treatment Cost

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SHANIKHANRA Participant Join Date: Jan 2013 Posts: 4	Water Treatment Cost 10/07/2020 3:58 AM
	Dear all, I was working on a water treatment plant (RO system) and the initial level of solids (TDS) was 1600 mg/liter. Now during execution client has changed the TDS in raw water and it is increased to 5000 mg/liter. Does it have a cost impact (equipment size or pump size etc) on the Package? and what will be the reject water quantity? How much percent of reject water can be increased?
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PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on. Posts: 32175 Good Answers: 839	#1 Re: Water Treatment Cost 10/07/2020 5:46 AM
	The people to speak to on the topic to help quantify the answer operate within the firm that is/has supplying/supplied the equipment, and not on CR4. The forum, for instance, does not even know the country in which the equipment is to operate, nor the logistics of assembling it and operating it, nor even what currency is involved in the costings. Further, cost information is deemed commercially-sensitive and ought not as a matter of principle to be shared on an anonymous international Engineering forum. Make the calls. Talk to the right people. Please advise the forum of the response in qualitative terms only, as it will prove valuable guidance for other readers. __________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
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SHANIKHANRA Participant Join Date: Jan 2013 Posts: 4	#2 In reply to #1 Re: Water Treatment Cost 10/07/2020 6:22 AM
	you are right but I just wanted "yes or no" here. Definitely, there will be an operational cost increment but will there be any change in pump capacity or will it be processed in 2 stages. The other thing is reject water which is also a non-commercial matter.
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PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on. Posts: 32175 Good Answers: 839	#3 In reply to #2 Re: Water Treatment Cost 10/07/2020 7:07 AM
	Please advise the forum on the membrane supplier's observations and recommendations, as these may be of value to other readers in the future. __________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
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PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on. Posts: 32175 Good Answers: 839	#4 Re: Water Treatment Cost 10/07/2020 7:20 AM
	With a change in feed from "slightly salty taste" to "fairly salty taste" there will be a change in the osmotic pressure that needs to be exceeded for the process, assuming the abbreviation <...RO...> means Reverse Osmosis, to run as required. Further, the membrane type, quantity and plant configuration need to be re-assessed with that change in mind. Each manufacturer's membranes behave differently. It is therefore necessary for these sorts of questions to be presented to those organisations to be answered. It's a fair bet that no forum reader has catalogues of membrane performance data in order to answer them, particularly as no data has been presented in the original post with which any form of quantitative reply might be marshalled. Make the calls. Please advise the forum of the outcome of that quest in non-money terms. __________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
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rashavarek Guru Join Date: Jul 2012 Location: Madison, WI. Posts: 2074 Good Answers: 77	#5 Re: Water Treatment Cost 10/07/2020 12:13 PM
	YES __________________ Knowing is the end result of learning, not believing.
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SolarEagle Guru Join Date: Mar 2007 Location: by the beach in Florida Posts: 33392 Good Answers: 1817	#6 Re: Water Treatment Cost 10/07/2020 1:53 PM
	You will probably want to go with a multi tiered approach depending on water quality desired, GPD requirement.... the particular types of particulates in the water should be addressed individually at times resulting in several types of pretreatment before entering the RO unit, so the solids(tds) feeding in should be much lower....and the system and membrane would then be designed to fit that need... https://www.samcotech.com/how-much-does-an-industrial-water-treatment-system-cost/ https://appliedmembranes.com/hl-series-high-tds-ro-systems-300-to-9000-gpd.html https://www.usbr.gov/lc/phoenix/programs/cass/pdf/Phase1/ATechapdxTDS.pdf https://core.ac.uk/download/pdf/194010483.pdf https://www.dimewaterinc.com/reducing-tds-water-reverse-osmosis-systems/ __________________ All living things seek to control their own destiny....this is the purpose of life
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