1. Wuhan University of Technology
Application of New Environmental Ceramics Filter Media in Water & Wastewater treatment
Presented By:
Dr.Meng Li
Wuhan University of Technology

2. Headlines:
The concept of Environmental Ceramics
The Current Situation and Application Perspective of Solid Wastes in China
The Application of Ceramics Filter media in the Field of Water & Wastewater Treatment

3. Basic concept & purpose of Environmental Ceramics
All (Or almost) of the raw materials come from solid wastes discharged in the Alumina plant
New ceramics materials can be widely used in Environmental and Engineering protection

4. Recycle and Reclamation
Basic Design Idea---
Recycle and Reclamation
Make use of some available
chemical components and
mineral structure
Make fully use of advanced
ceramics processing
techniques and equipment
Produce a variety of new ceramics materials to meet
the needs of environmental protection and water treatment

5. The mineral components of red grain:
Main minerals: Calcite,60-65 %
The other components: egg white stone,allophane,acerate iron mine,etc
Its mineral components are not only complex, but also not in accord with those of natural clay.

6. The current plight of red alumina grain:
The total number of red grain produced each year is 0.6 billion tons in the world as a whole.
5 million tons red grain generated each year in China
Red grain piled up to
40 million tons in China
Huge red grain wastes deposit

7. Harmful red grain pollutants
Underground water source and farmland nearby heavily polluted.
Lots of farmlands occupied.
Underground water basified permanently due to red grain infiltration.

8. Leading Quality of this sort of ceramics product in china
Latest headway-1:
Midterm test finished in Shandong Alum Corporation with research investment up to 3 million Yuan.
Leading Quality of this sort of ceramics product in china
Unique advantage in application of drinking water treatment

9. Latest headway-2:
Capacity of Product line up to 6000 t/y in Shandong Alum Corporation
Similar product be developed using solid wastes discharged in Liuzhou iron-steel Corporation

10. Main properties of our ceramics filter media:
●All of the raw materials come from red clay & coal ash & coal mine stone
●Adjustable ratio of pores 45%-70%
●Specific surface area 1×104cm2/g
● Penetrability coefficient 1.0~4.5cm/s
● Crushing strength 0.779KN
● Average density 0.8~1.8g/cm3

11. Main advantages of Shandong ceramics filter media in water treatment
high capacity for pollutants deposited in the filter media layer
highly porous inner structure
rational media size distribution
Meet the water quality sanitary standard for drinking water

12. Environmental uses of Shandong
ceramics filter media
Adsorption for garbage in-leakage
Exhaust gas in
thermoelectricity
construction
materials plant

13. National standard of filter media for drinking water treatment

14. Experimental process

16. Keep perfect pollutants removal efficiency in the 70 hr run term
Discussion-1
Pollutants deposits distribution tend to be uniform in the whole filter media
Keep perfect pollutants removal efficiency in the 70 hr run term

18. Much longer filter run when ceramics media used compared to sand
Discussion-2
Much longer filter run when ceramics media used compared to sand

20. Less water and electricity needed for backwash
Discussion-3
Less water and electricity needed for backwash

22. Discussion-4
　 Keep stable treated water quality when ceramics filter media used

23. Process of oily wastewater treatment using Shandong ceramics material
polymer
bump
Coagulation tank
Oil separation
Air diffuser
Preliminary filter
Bio-activated carbon
Fine filter
Bump
network