Applications
- Removal of SS, color, BOD and COD in organic wastewater
- Removal of heavy metals, cyanides in inorganic wastewater
- Thickening of wastewater
Facilities
- Simple system and compact space
- As the satellite component is minimum, maintenance work is easy and required space for installation is very compact.
- Wide application
- Combining MF membrane with coagulant process, the unique system removes not only SS, infectious microorganisms, COD, BOD, color, but also heavy metals like chromium, zinc and harmful substances like cyanide from designated water while latter items are not captured usually by MF membrane.
- Durable ceramic membrane
- This system adopts ceramic membrane, which is durable and chemical resistant. Therefore, the lifetime is longer than organic membranes and replacement cost can be saved drastically.
- Multifunctional system
- [See below example for treated water]
- Turbidity
- Since the minimal pore size of the membrane is 0.1 繝ｻ雜｣・ｽ・ｼm, coli-form bacteria or cryptosporidium can be removed certainly. Turbidity of treated water is under detection limit.
- Fe
- Fe is removed efficiently by oxidation and coagulation in the membrane tank.
- Mn
- Mn is absorbed to turbidity matters and removed efficiently after oxidation by diffusing, bacteria or pre-chlorination.
- NH4-N
- NH4-N is removed by biological actions in the membrane tank.
- KmnO4 comsumption
- Color, odor, agricultural chemicals and other organic matters can be removed by adding powdered activated carbon in the membrane tank.
Operating principle of ceramic membrane filtration
Membrane modules
Overview of the system
- Tank-Submerged Type Ceramic Membrane Filtration System is to product treated water by combining Micro-Filtration membrane with coagulant process. The unique MF membrane is made of ceramic whose minimal pore size is 0.1 繝ｻ雜｣・ｽ・ｼm.
- Raw water flows into the membrane tank after coagulation by coagulants and pH control chemicals.
- Membrane modules are stacked in the membrane tank. Raw water is filtrated by hydraulic pressure by gravity and suction pumps.
- Membrane fouling is reduced by continuous diffusing from the bottom and periodical back washing.
- Concentrated water in the membrane tank is drained regularly, on the other hand, raw water is poured into the tank. Therefore, the concentration of the water is kept constant.
- Chemical cleaning is conducted once or twice a year to restore the membrane performance which degrade gradually.
