1. OxiMax Bio - F Clear using nature to amend natural disaster
Unique systems for removal of fluoride and iron from drinking water
HES Water Engineers (India) Pvt Ltd
(Group Company of Water Engineers Australia Pty Ltd, Australia)
K-27, Five Star Industrial Zone, MIDC, Butibori, Nagpur , INDIA
Phone: , , Fax:
E Mail:
Website:
OXIMAX BIO-F CLEAR - Clean Water, Healthy Life

2. Worldwide Issues: Fluoride removal Iron removal
HES WATER ENGINEERS (INDIA) PVT LTD, NAGPUR. Phone: , Fax: ,

3. High adsorption capacity Steady adsorption capacity Simple to operate
Aims:
Safety
Affordability
High adsorption capacity
Steady adsorption capacity
Simple to operate
HES WATER ENGINEERS (INDIA) PVT LTD, NAGPUR. Phone: , Fax: ,

4. Effect of co-existing anions
Technology Development
Pilot Trail
Activated and treatment
process
Bio-material
Screening
Defluoride Capacity
Effect of pH
Safety analysis
Defluoridation Efficiency
Effect of co-existing anions
HES WATER ENGINEERS (INDIA) PVT LTD, NAGPUR. Phone: , Fax: ,

5. What is Bio-F?
Bio-F is a biological adsorbent, using nature shell as raw material
Porous crystal and hexagonal structure
Insoluble in water
High temperature tolerance
Multi-purpose (Fe, Mn removal)
Image of Bio-F x 20
HES WATER ENGINEERS (INDIA) PVT LTD, NAGPUR. Phone: , Fax: ,

6. F adsorption Capacity(48h): 7.77mg/g
Bio-F can remove fluoride, iron & manganese efficiently
F adsorption Capacity(48h): 7.77mg/g
Mn adsorption Capacity(24h): 3.187mg/g
Fe adsorption Capacity(24h): 6.969mg/g
HES WATER ENGINEERS (INDIA) PVT LTD, NAGPUR. Phone: , Fax: ,

7. High fluoride removal efficiency High fluoride removal capacity
Bio-F Benefits:
Safety
High fluoride removal efficiency
High fluoride removal capacity
Suitable for various water
Stable regeneration capability
Cost effective
HES WATER ENGINEERS (INDIA) PVT LTD, NAGPUR. Phone: , Fax: ,

8. Bio-F Value Propositions: Improve Water Quality
Fluoride removal >90%
Iron removal >82%
Manganese removal >70%
HES WATER ENGINEERS (INDIA) PVT LTD, NAGPUR. Phone: , Fax: ,

9. Performance of Bio-F defluoridation equipment: 1 Contact time: 3~5min
2 Feed pressure: <0.3Mpa
3 Work temperature: 5℃~45℃
4 Waste Water : <1%
5 Defluoridation efficiency: ＞90%
6 Applicable range of raw water pH: 5～9
7 Total automation
8 Operation cost (electricity & reagent ): ≤Re.1/ m3
HES WATER ENGINEERS (INDIA) PVT LTD, NAGPUR. Phone: , Fax: ,

10. Safety Evaluation of Bio-f Plumbum
Harmful
Element
Concentration
(mg/kg)
Maximum levels of contaminants in foods
（mg/kg）
Plumbum
0.24
0.02 ( Infant Milk Powder )
hydrargyrum
0.005
0.01（Fresh Milk）－0.05 ( Meat & Egg )
arsenic
0.46
0.05 ( Fresh Milk ) －1 (Shrimp & Crab)
aluminium
< 0.5
100 ( Flour Food )
cadmium
0.004
0.05 ( Egg )
The above table clearly shows no harmful element exceeds the limits of water quality
HES WATER ENGINEERS (INDIA) PVT LTD, NAGPUR. Phone: , Fax: ,

11. Test Results by GWSSB, Gujarat
Standards for Drinking Water Quality
Raw Water
Product Water
Desirable
Permissible
458
402
Colour Hazen Units 5 25
NIL
ODOUR UO
TURBIDITY NTU 10
DISSOLVED SOLIDS mg/l
500
2000
250
380 pH
6.5 TO 8.5
No relaxation
7.3
7.58
Total hardness (as CaCo3) mg/l
300
600
120 40
Calcium (as Ca) mg/l 75
200 38 13
Magnesium (as Mg) mg/l 30
100 6 2
Chlorides (as Cl) mg/l
1000 48
184
Nitrate (as No3) mg/l 45
23.92
Sulphates ( as SO4) mg/l
400
Fluoride (as F) mg/l
1.00
1.50
4.43
0.25
Alkalinity (as CaCo3) mg/l
104
312
OPINION
UNFIT
FIT
HES WATER ENGINEERS (INDIA) PVT LTD, NAGPUR. Phone: , Fax: ,

12. Fluoride Content in PPM
Test results by State Public Health Laboratory, Government of Maharashtra, Pune
FLUORIDE
IRON
Fluoride Content in PPM
Sr. No.
Type of Sample
Raw Water before passing through Bio-F Unit
Product Water (10 minutes after passing through Bio-F unit)
Product Water (20 minutes after passing through Bio-F unit) 1
Batch No.1
1.0
0.143
0.112 2
Batch No. 2
5.0
0.177
0.139 3
Batch No. 3
7.0
0.211
0.205 4
Batch No. 4
10.0
0.271
0.220 5
Batch No. 5
Nil
Iron Content in PPM
Sr. No.
Type of Sample
Raw Water before passing through Bio-F Unit
Product Water (10 minutes after passing through Bio-F unit)
Product Water (20 minutes after passing through Bio-F unit) 1
Batch No.1
1.0
0.01
0.02 2
Batch No. 2
10.0
0.17 3
Batch No. 3
25.0
0.10
0.05 4
Batch No. 4
50.0
0.22
0.08 5
Batch No. 5
Nil
HES WATER ENGINEERS (INDIA) PVT LTD, NAGPUR. Phone: , Fax: ,

13. Test Report: Food & Drug Laboratory, Vadodara
Sl. No.
Fluoride content in Raw Water
Contact Time with Media
Fluoride content in Product Water 1
1.40 PPM
10 Minutes
0.047 PPM 2
2.48 PPM
0.042 PPM 3
3.50 PPM
0.044 PPM 4
5.37 PPM
0.041 PPM 5
7.46 PPM
0.038 PPM
HES WATER ENGINEERS (INDIA) PVT LTD, NAGPUR. Phone: , Fax: ,

14. * SOURCE: “FLUORIDE IN DRINKING WATER” BY W.H.O.
Bio-F compared to Activated Alumina
Sl. No
Activity
Activated Alumina*
OxiMax Bio-F Clear 1
Defluoridation capacity
1mg/g
4mg/g 2
Regeneration Process
Regeneration by exposing to 4 percent caustic soda (hazardous chemical) and therefore can not be carried out at local level. Must be taken to a center
Regeneration only by salt and/or alum. Can be carried out by a layman at site. 3
Wastewater
Waste water contaminated with fluoride thus going back to ground at the same location
Waste water not contaminated with fluoride. Regeneration process in Bio-F only does a fresh coating and not releasing any fluoride in waste water 4
Neutralization
Neutralization required with sulphuric acid after regeneration, again a hazardous chemical. Cumbersome and risky process
No neutralization required 5
Capacity reduction
Capacity reduced by 30-40% after regeneration
Capacity reduced marginally 2-5% 6
Number of regenerations possible
3-4, after which media needs to be replaced.
15-20 times regeneration can be carried out. 7
Presence of aluminium after regeneration
Regeneration may result in presence of aluminium at a concentration greater than 0.2 mg/l, if the pH is not readjusted to normal.
No such possibility
HES WATER ENGINEERS (INDIA) PVT LTD, NAGPUR. Phone: , Fax: ,

15. Comparison of adsorption capacity
Much higher capacity as compared to bone charcoal.
HES WATER ENGINEERS (INDIA) PVT LTD, NAGPUR. Phone: , Fax: ,

16. Contact Time
Comparison of Activated Clinopitolite with Bio-F in dynamic testing have shown that activated clinopitolite need to be regenerated after 75 liter water produced ( contact time 20 min), but 700 liter for Bio-F (contact time 3.5 min).
HES WATER ENGINEERS (INDIA) PVT LTD, NAGPUR. Phone: , Fax: ,

17. Effect of co-existing ions on removal of F, Fe(ll) and Mn(ll)
NOTE: High concentration of Ca2+, NO3, HPO4(2) could favour defluoridation with bio-f while concentration of Co3(2) and HCO3 marginally reduces the capacity of bio-F
Anions
Ion concentration /mmol.l-1
Adsorption capacity/mg.g-1
(mean n=2)
Control
5.58
HPO4(2) 1
6.698 2
6.853 3
6.971
NO3
1.5
6.421
6.34 5
6.266
HCO3-
5.391
4.992
CO3(2)
3.332
1.821
SiO3(2)
0.1
5.379
0.3
5.531
SO4(2)
5.762 Cl
5.936
6.104
Cations
Ion concentration /mmol.l-1
Adsorption capacity/mg.g-1
(mean n=2)
Control
3.47
Na+ 1
3.055 2
3.085 K+
1.5
3.850 3
3.635
Ca2+
3.765
5.250
Mg2+
HES WATER ENGINEERS (INDIA) PVT LTD, NAGPUR. Phone: , Fax: ,

18. Effect of pH on defluoridation capacity
Key Result: Bio-F has a stable adsorption
capacity under pH 4-9.
HES WATER ENGINEERS (INDIA) PVT LTD, NAGPUR. Phone: , Fax: ,

19. Effect of flow on adsorbents
Key result: Bio-F has better adsorption capability than others in same velocity of flow, and can work in a shorter contact time.
HES WATER ENGINEERS (INDIA) PVT LTD, NAGPUR. Phone: , Fax: ,

20. Regeneration Process:
Dissolve Alum (30% water and 5% alum)
Transportation to the columns
Retain for 2-3 hours
Wash redundant alum F- F- F- F- F- F- F- F- F- F-
HES WATER ENGINEERS (INDIA) PVT LTD, NAGPUR. Phone: , Fax: ,

21. Stability of capacity after regeneration:
HES WATER ENGINEERS (INDIA) PVT LTD, NAGPUR. Phone: , Fax: ,

22. Key Results: Bio-F adsorbent can remove Fe from pH 3.5-7.5, and
Effect of pH on removal of iron and manganese:
Key Results: Bio-F adsorbent can remove Fe from pH , and
the better condition for Bio-F to adsorb Mn is alkaline.
HES WATER ENGINEERS (INDIA) PVT LTD, NAGPUR. Phone: , Fax: ,

23. Treatment process： Component of waste water： Waste disposal:
Inorganic salt
Treatment process：
process produces solid inorganic salt cake
easily disposed in Non-hazardous waste landfill
HES WATER ENGINEERS (INDIA) PVT LTD, NAGPUR. Phone: , Fax: ,

24. Bio-F Benefits: International intellectual property (patent pending)
Safety;
High defluoridation capacity;
Lower cost；
Suitable for wide range of pH ；
Steady capacity under other ionic competition；
Simple regeneration process, Non-hazardous in wastewater, easy to disposal；
Steady capacity after regeneration；
Environment friendly
HES WATER ENGINEERS (INDIA) PVT LTD, NAGPUR. Phone: , Fax: ,

25. No electricity required
Caters to all needs:
Hand Pump
No electricity required
Domestic unit
Open well/ tube well
HES WATER ENGINEERS (INDIA) PVT LTD, NAGPUR. Phone: , Fax: ,

26. Thank You !
HES WATER ENGINEERS (INDIA) PVT LTD, NAGPUR. Phone: , Fax: ,