FILTER PRESSES

FILTER PRESS;
Filter press operates based on the principle of separating solid and liquid phases, is special equipment usually used in dewatering (reducing the volume of waste, reducing the water amount in production) or filtration applications. Watery sludge that is transferred by a pump to between the sequential filter press plates, as the pressure rise sludge infiltrates through the cloth medium and leaves solid substances in the space between the plates. The outputs of filter press process are filter press cake which is in solid form and filtrate which is in liquid form. Filtration process is a batch process when the plates are filled up, the system is opened and filter press cake is cleared. Then the period is repeated.

Filter press has being used for many years and it is preferred for many applications owing to its high dewatering efficiency. More practical, more controllable and fully automatic models have been improved by technological development. Advantages of filter press compare to the other dewatering and filtration equipments are given below:

• High dewatering efficiency and low storing, transferring and disposal cost.
• Provides suspended solids removal.
• Filter quality is high so it can separate solids in high amount.
• Cake concentration is totally independent of waste concentration.
• Can be easily modified when capacity increase or decrease are needed.
• Low capital cost and operational cost.
• Has strong and enduring construction.
• Less maintenance requirement.
• Easily run.
• Compatible with automation.

SECTORS USE FILTER PRESS
Filter presses provide the highest solid ratio in mechanically dewatering equipments has a wide application field:

1. Ceramics, Porcelain and Pottery Production
2. Marble Industry
3. Glass Industry
4. Pharmaceutical and Cosmetics Industry
5. Paper Industry
6. Food Industry
a) Yeast Production
b) Sugar Production (Sugar wastes, sugar carbonation sludge)
c) Diary and diary products
d) Slaughterhouses
e) Chocolate and candy production
f) Catering factories
g) Vinegar, fermented grape juice and wine production
7. Vegetable Oil Industry
a) Biodiesel
b) Canola oil
c) Sunflower oil
d) Olive oil
e) Date oil
f) Palm oil
g) Corn oil
h) Other vegetable oil
8. Alcoholic and Soft Drinks Industry
a) Alcoholic beverage production (wine, beer etc)
b) Soft drink production
c) Fruit juice production
d) Residual Filtration
e) Malt Filtration
f) Anise Filtration
g) Liquids from aromatic vegetation
9. Chemical Industry
a) Cleaners production
b) Dye production
c) Textile chemicals production
d) Paraffin production
e) Vaseline production
f) Soap and detergent production
g) Pigments
h) Organic Polymers
i) Carbon
j) Phosphoric acid
k) Silica Gel
l) Ethanol Sludge
m) Latex
10. Agriculture Industry
a) Fertilizer production
b) Pesticides production
11. Metal Process and Surface Treatment Industry
a) Coating Bath Filtration
b) Galvanization industry
c) Electro coating industry
d) Oxide layer sludge
e) Spray dye cabinet wastes
f) Trimming water filtration
12. Mining and Refinery Industry
a) Filtration of water contains clay
b) Ore dressing (Copper, zinc, plumb, coal etc.)
c) Coal chipping
d) Mineral chipping
e) Dross water filtration
13. Oil and Petrochemical Industry
a) Filtration of waste oils and oily sludge
14. Treatment Plants
a) Sludge dewatering in biological treatment plants
b) Sludge dewatering in chemical treatment plants
c) Filtration of raw water and wastewater
d) Water discharge sludge
15. Other applications
a) Cooling tower filtration
b) Gas cleaner sludge
c) Ash filtration for chimney gas
d) Plastic recycling plants