KDF Fluid Treatment - 30 Years of Water TreatmentBacteria Lab Test Results Two KDF Lab Test Results from Biological Research Solutions

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KDF process media for bacteria removal from water.

Lab Test Results Show How KDF Process Media Work in Water Treatment Processing for Bacteria Removal


KDF Lab Test Results from Biological Research Solutions

Laboratory Service Performed:

Analysis of the mode of action of KDF versus Pseudomonas fluorescens.

Table 1 - Description of? Test Procedure
  • Test Microorganism: enterobacter aero genes
  • Concentration of test Microorganism: 300cfu/ml
  • Flow Rate: 1.0 - 1.5 liters per minute
  • Water Hardness: 100ppm
Test?
Day
Backwash Purge Bacteria
Injected
Survivor
Measurements
1 None None Yes Every 10 liters for 100 liter total flow
2-6 None None Yes Every 10 liters for 20 liter total flow
7 15 min 10 min Yes After 10 liter flow
11 None None No Every 10 liters for 20 liter total flow
19 15 min 10 min No Every 10 liters for 20 liter total flow

Table 2- Results of Water Treatment Device Evaluation.

Total Water Flow (1) 10 20 30 40 50 60 70 80 90 100
Enterobacter Aerogenes Survivors (cfu/ml)
Day 1 6 4 5 5 2 3 6 5 8 8
Day 2 6 10 ? ? ? ? ? ? ? ?
Day 3 4 4 ? ? ? ? ? ? ? ?
Day 4 24 7 ? ? ? ? ? ? ? ?
Day 5 1 0 ? ? ? ? ? ? ? ?
Day 6 0 2 ? ? ? ? ? ? ? ?
Day 7 2 ? ? ? ? ? ? ? ? ?
Total Water Flow (1) 10 20 ? ? ? ? ? ? ? ?
Reduction in Endogenous Bacteria (%)
Day 11 80% 73% ? ? ? ? ? ? ? ?
Day 19 59% 30% ? ? ? ? ? ? ? ?

No Enterobacter aerogenes survivors were detectable on Day 11 or 19.

Model water test system.

Figure 1 - Model Water Test System

 


Submitted by Biological Research Solutions

John W. Wireman, PhD, Dated: February 25, 1991