Fe and Mn Removal

[CrazyHorse81]

Does anyone have any input for the best available technologies for iron and manganese removal? I am preparing a CIP for a community water system experiencing staining, odors, and other nuisances from these metals. Currently they are using a sequestering agent, but once it passes through a hot water heater it loses suspension and the fe and mn are back making trouble for the families etc.

Thanks in advance!

 

[RIP - VTEnviro]

I've run into this from time to time. I'm about to have lunch, then I will dig through what I've got. Its been a few years so the answer is not on the tip of my tongue.

 

[Guest]

You have a few methods available ...

1. Aeration, sedimentation, filtration

2. Aeration, contact oxidation, sedimentation, sand filtration

3. Aeration, contact filtration

4. Contact filtration

5. Catalytic action, aeration, sedimentation, filtration

6. Aeration, chlorination, sedimentation, sand filtration

7. Aeration, lime treatment, sedimentation, sand filtration

8. Aeration, coagulation and lime treatment, sedimentation, sand filtration

9. Zeolite softening

10. Lime treatment, sedimentation, sand filtration

Source: C.R. Cox, Operation and Control of Water Treatment Processes, WHO Monograph Series, No. 49, World Health Organization, Geneva, 1964.

I have seen the same list reproduced in the AWWA water/wastewater treatment handbooks.

JR

 

[CrazyHorse81]

I've run into this from time to time. I'm about to have lunch, then I will dig through what I've got. Its been a few years so the answer is not on the tip of my tongue.

Done eatin' yet?

 

[CrazyHorse81]

You have a few methods available ...
1. Aeration, sedimentation, filtration

2. Aeration, contact oxidation, sedimentation, sand filtration

3. Aeration, contact filtration

4. Contact filtration

5. Catalytic action, aeration, sedimentation, filtration

6. Aeration, chlorination, sedimentation, sand filtration

7. Aeration, lime treatment, sedimentation, sand filtration

8. Aeration, coagulation and lime treatment, sedimentation, sand filtration

9. Zeolite softening

10. Lime treatment, sedimentation, sand filtration

Source: C.R. Cox, Operation and Control of Water Treatment Processes, WHO Monograph Series, No. 49, World Health Organization, Geneva, 1964.

I have seen the same list reproduced in the AWWA water/wastewater treatment handbooks.

JR

Thanks for the list and reference - I managed to get ahold of the AWWA handbook from a water operator