Economical Iron Removal from Water

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We have a deep well with the following water characteristics:

Apart from the reverse osmosis (RO) system, what other methods can be used for iron removal? What is the cheapest but efficient method?

I need to find an economical way of removing iron and the rest of the unwanted matter.  

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32 Answers

Aeration or Fe & Mn filter ...

Aeration or Fe & Mn filter are two common options for you.

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Hi Thisara, SaferEx - ...

Hi Thisara,

SaferEx - Multiaction Water Purifier removes Iron, Manganese, etc and reduces turbidity, disinfects the water, coagulates the contaminants and sediments them in a single application and process unit. Read more here: https://drive.google.com/file/d/0B5vq4wO9sNRoRjJTUU9JVjRjQVU/view?usp=sharing.

Regards

Justin.

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Hydroxide precipitation ...

Hydroxide precipitation followed by coagulation and flocculation, sludge removal. google it.

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As you do not provide details ...

As you do not provide details as to the end use of the water, I'll assume that it will be potable. For a very efficient way to precipitate all the Iron in the water, use CLO2 as a pre-oxidant. You'll clean out your system after a while and only a slight final dose of Chlorine will be necessitated to comply with EPA mandated residual levels in your distribution. System costs vary from a couple thousand to hundreds of thousands.

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Another very inexpensive ...

Another very inexpensive method is by fixed bed adsorption using alternative adsorbents such as activated carbon, vermiculite and associated hydrotalcite.

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Lots of good ideas, but ...

Lots of good ideas, but seems to me that you need to define the quality required and/or the end use for the water before attempting to prescribe solutions

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your best bet is aeration. ...

your best bet is aeration. The aeration method will depend on the flow you have and how your system is configured. pumping vast amount of air into an aeration tank can be costly (power) may be using a venturi could be effective.

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your best bet is aeration. ...

your best bet is aeration. The aeration method will depend on the flow you have and how your system is configured. pumping vast amount of air into an aeration tank can be costly (power) may be using a venturi could be effective.

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I would send this water into ...

I would send this water into an aeration tank. lots of air stripping and some simple filtration will take care of most of your problems. However, the chloride will probably need r/o. The level it is at would not be too bad, but can create problems for piping and metals in your system.

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With all the ammonia you ...

With all the ammonia you won't be able to use chlorine. Aeration often works but the pH will need to be >7.0. KMn04 is your next best option for oxidation and of course it will be followed by filtration. 

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Chlorides can be ...

Chlorides can be removed/rejected only by reverse osmosis after filtration. 

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As a primary answer you can ...

As a primary answer you can easily remove Iron and Manganese using 20-50 ppm free chlorine and NaOH to achieve a pH 8-9 for oxidation following a sedimentation/oxidation tank for at least 1 hour residential time. Water should be then filtered by sand/pyrolusite media at a linear speed of 10 m/h. 

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Oxidation followed by filtration is the cheapest way. If the flow is low, aeration followed by a good settling time and then filtration may solve the problem without chlorination. Oxidizer dosage can be calculated using Plutocalc.

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