METAWATER

Water treatment solutions in water supply sector

Filter press(OH)

Outline

A Filter Press OH (Over Head) type dehydrator is used mainly for treating the sludge of supply water and industrial water. Compared to the conventional filter press, this type is lighter with an advantage of availability for long-term filtration based on its simplified structure. It is a non-dosing type of dehydrator.

Characteristics

Filter press(OH)

Operation management is easier without a side bar.

Because both sides of the filtration panel are open, inspection, filter cloth replacement and filter cloth cleaning can be performed easily.

Component weight reduction and upsizing are possible.

Because of the simple structure and use of polypropylene or stainless steel for the filter plate material, the unit is light and allows upsizing.

Can be used for non-dosing dehydration for a wide range of sludge types

Because of high filtration pressure and optional filter chamber thickness, it is possible to operate the equipment in a way that suits the slurry property.

Inexpensive running cost

Because there are fewer consumable parts and the process mainly is based on long-hour cake filtration, the service life of the filter cloth is long and the running cost is inexpensive.

Flow sheet

Flow sheet

Operation cycle

Filter plate clamp unit: Close,Forcing pump: ON,Filtrate level detector or timer,Forcing pump: OFF,Air flow,Filter plate clamp unit: Open,Plate opening unit (cake discharge)

The duration for management is as short as one hour a day from the blow process to plate closing process. Further, convenient time periods can be chosen for such management.

Operation cycle

Specifications

The figure below indicates an NR-OH type.

NR-OH type

Model Number
of chambers
(ch)
PP filter plate SUS filter plate
Filtration
area
(m2)
Filter
chamber
area
(m2)
Approximate
dimensions
Weight
(ton)
Filtration
area
(m2)
Filter
chamber
area
(m2)
Approximate
dimensions
Weight
(ton)
Width ×
Height ×
Total length
(m)
Width ×
Height ×
Total length
(m)
NR-OH
(1500
× 1500)
50 183 1.8 2.4 ×
2.7 ×
7.1
22 185 1.9 2.4 ×
2.7 ×
5.8
25
100 365 3.7 2.4 ×
2.7 ×
10.4
29 370 3.7 2.4 ×
2.7 ×
8.1
40
150 548 5.5 2.4 ×
2.8 ×
13.7
37 556 5.6 2.4 ×
2.7 ×
10.2
52
200 730 7.3 2.4 ×
3.1 ×
17.1
45 741 7.4 2.4 ×
2.7 ×
12.3
66
NR-OH
(2000
× 1500)
100 484 5.2 2.5 ×
4.0 ×
10.4
45 500 5.0 2.4 ×
4.0 ×
9.4
50
150 731 7.8 2.5 ×
4.0 ×
14.9
60 750 7.5 2.5 ×
4.1 ×
11.2
65
200 975 10.4 2.5 ×
4.0 ×
17.1
72 100 10.0 2.5 ×
4.2 ×
13.0
82
N-M-OH
(2000
× 2000)
100 646 7.0 4.0 ×
4.3 ×
12.5
73 - - - -
130 849 9.1 4.0 ×
4.3 ×
14.7
84 - - - -
155 1000 10.8 4.0 ×
4.3 ×
16.4
94 - - - -

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