tecman
New Member
I have a well water system with H2O2 injection and a 12” KL filter with Clack WS1 valve. I believe we have some IRB because the toilet tanks got orange slime when there was no iron filter.
The current issue is that the iron after the KL is all over the place. Sometimes the water out of the KL is clear (my Hatch kit says 0.2ppm Fe), and sometimes the water is very brown (tested 2+ppm Fe). I have replaced the injection check valve and can see the flow ball moving each time the injection pump rotates, so I'm sure the injection pump is working.
Here’s an example of how the iron has been changing:
1) yesterday I got a water sample after the KL filter and it was very brown in color. Tested at 2.5ppm Fe after the KL and 2.9ppm before the KL. I have been backwashing the KL every 30min every 3 days @12.4 GPM & 5min rinse, but I initiated a manual 42min backwash to see if the water would be clear.
2) Immediately after this BW, the water out of the KL was clear in color.
3) The next morning after 2 people showered, the water after the KL was very brown.
4) I manually initiated 30min BW/5min rinse—water was now slightly brown. Thinking the KL might not be thoroughly clean, I initiated another 30min BW. The water remained the same slightly brown.
I’m baffled by these swings in Fe. It’s seems like the KL sometimes works great and then just stops working. Any advice would be greatly appreciated!
Water Report June 2021 by NTL :
Total Coliform by P/A Total Coliform and E.coli were ABSENT in this sample.
Aluminum ND mg/L 0.2 EPA Secondary 0.1
Arsenic 0.008 mg/L 0.010 EPA Primary 0.005
Barium ND mg/L 2 EPA Primary 0.30
Cadmium ND mg/L 0.005 EPA Primary 0.002
Calcium 93.5 mg/L -- 2.0
Chromium ND mg/L 0.1 EPA Primary 0.010
Copper 0.008 mg/L 1.3 EPA Action Level 0.004
Iron 5.988 mg/L 0.3 EPA Secondary 0.020
Lead ND mg/L 0.015 EPA Action Level 0.002
Lithium 0.003 mg/L -- 0.001
Magnesium 41.30 mg/L -- 0.10
Manganese 0.074 mg/L 0.05 EPA Secondary 0.004
Mercury ND mg/L 0.002 EPA Primary 0.001
Nickel ND mg/L -- 0.020
Potassium ND mg/L -- 1.0
Selenium ND mg/L 0.05 EPA Primary 0.020
Silica 15.5 mg/L -- 0.1
Silver ND mg/L 0.100 EPA Secondary 0.002
Sodium 5 mg/L -- 1
Strontium 0.098 mg/L -- 0.001
Uranium ND mg/L 0.030 EPA Primary 0.001
Zinc 0.018 mg/L 5 EPA Secondary 0.004
Physical Factors
Alkalinity (Total as CaCO3) 370 mg/L -- 20
Hardness 400 mg/L 100 NTL Internal 10
pH 7.1 pH Units 6.5 to 8.5 EPA Secondary
Total Dissolved Solids 430 mg/L 500 EPA Secondary 20
Turbidity 16.0 NTU 1.0 EPA Action Level 0.1
Inorganic Analytes - Other
Bromide ND mg/L -- 0.5
Chloride 15.0 mg/L 250 EPA Secondary 5.0
Fluoride ND mg/L 4.0 EPA Primary 0.5
Nitrate as N ND mg/L 10 EPA Primary 0.5
Nitrite as N ND mg/L 1 EPA Primary 0.5
Ortho Phosphate ND mg/L -- 2.0
Sulfate 31.0 mg/L 250 EPA Secondary 5.0
The current issue is that the iron after the KL is all over the place. Sometimes the water out of the KL is clear (my Hatch kit says 0.2ppm Fe), and sometimes the water is very brown (tested 2+ppm Fe). I have replaced the injection check valve and can see the flow ball moving each time the injection pump rotates, so I'm sure the injection pump is working.
Here’s an example of how the iron has been changing:
1) yesterday I got a water sample after the KL filter and it was very brown in color. Tested at 2.5ppm Fe after the KL and 2.9ppm before the KL. I have been backwashing the KL every 30min every 3 days @12.4 GPM & 5min rinse, but I initiated a manual 42min backwash to see if the water would be clear.
2) Immediately after this BW, the water out of the KL was clear in color.
3) The next morning after 2 people showered, the water after the KL was very brown.
4) I manually initiated 30min BW/5min rinse—water was now slightly brown. Thinking the KL might not be thoroughly clean, I initiated another 30min BW. The water remained the same slightly brown.
I’m baffled by these swings in Fe. It’s seems like the KL sometimes works great and then just stops working. Any advice would be greatly appreciated!
Water Report June 2021 by NTL :
Total Coliform by P/A Total Coliform and E.coli were ABSENT in this sample.
Aluminum ND mg/L 0.2 EPA Secondary 0.1
Arsenic 0.008 mg/L 0.010 EPA Primary 0.005
Barium ND mg/L 2 EPA Primary 0.30
Cadmium ND mg/L 0.005 EPA Primary 0.002
Calcium 93.5 mg/L -- 2.0
Chromium ND mg/L 0.1 EPA Primary 0.010
Copper 0.008 mg/L 1.3 EPA Action Level 0.004
Iron 5.988 mg/L 0.3 EPA Secondary 0.020
Lead ND mg/L 0.015 EPA Action Level 0.002
Lithium 0.003 mg/L -- 0.001
Magnesium 41.30 mg/L -- 0.10
Manganese 0.074 mg/L 0.05 EPA Secondary 0.004
Mercury ND mg/L 0.002 EPA Primary 0.001
Nickel ND mg/L -- 0.020
Potassium ND mg/L -- 1.0
Selenium ND mg/L 0.05 EPA Primary 0.020
Silica 15.5 mg/L -- 0.1
Silver ND mg/L 0.100 EPA Secondary 0.002
Sodium 5 mg/L -- 1
Strontium 0.098 mg/L -- 0.001
Uranium ND mg/L 0.030 EPA Primary 0.001
Zinc 0.018 mg/L 5 EPA Secondary 0.004
Physical Factors
Alkalinity (Total as CaCO3) 370 mg/L -- 20
Hardness 400 mg/L 100 NTL Internal 10
pH 7.1 pH Units 6.5 to 8.5 EPA Secondary
Total Dissolved Solids 430 mg/L 500 EPA Secondary 20
Turbidity 16.0 NTU 1.0 EPA Action Level 0.1
Inorganic Analytes - Other
Bromide ND mg/L -- 0.5
Chloride 15.0 mg/L 250 EPA Secondary 5.0
Fluoride ND mg/L 4.0 EPA Primary 0.5
Nitrate as N ND mg/L 10 EPA Primary 0.5
Nitrite as N ND mg/L 1 EPA Primary 0.5
Ortho Phosphate ND mg/L -- 2.0
Sulfate 31.0 mg/L 250 EPA Secondary 5.0