Filters                                                    

Filtration is a unit process widely used in water and wastewater treatment for the removal of particulate materials commonly found in water in this process water passes through a filter medium, and particulate materials either accumulate on the surface of the medium or are collected through its depth. Filters have been found effective for removing particulate of all size ranges including algae, colloidal compounds, viruses, asbestos fiber, and colloidal clay particulates, provided that proper design parameters are used.
A wide range of media is utilized in filtration system . Typical examples include screens with openings of 1-100 ?m and granular materials, usually sand , with sizes ranging from 0.1 to 10 mm and activated carbon.

Tank- type Pressure Filter
There are several types of so-called pressure filters available, each performing specialized task. A single description of the equipment mechanics is sufficient to understand the principal.
A typical filter consists of a tank, the filter media, and valves or a controller to direct the filter through its various cycles – typically service, backwash and rinse.

Filtration can be achieved by using the following:

 

• Function
• Type
• Applications

 

• Function
• Type 
• Applications

 

• Function
• Filter Parts
• Application
 

a

• Function

Sand is a filtration Media used to remove turbidity , mud & suspended solids.           
Sand filter consists of  :                      

1- Control valve:

It is an automatic operation. The control valve controls the backwash process
through the filter:

Water enters the unit of the inlet , flows through the tube then out the distributor
up through the media and out the drain line.

Service position :
Raw water inters through the inlet to the media then out the tube to get the required
water through the outlet.

2- Pressure vessel   : which contain the media
Vessel material is fiberglass.

3- Media  : Sand

    1-Automatic Valves                                                              2-Manual Valves

it can be used as a filter control                                                          it can be used as a filter control
to control the service, backwash                                                        to control the service, backwash 
& rinse cycles automatically.                                                             & rinse cycles manually for a wide                          
 for a range of flowrates1-50m3/hr for                                              range flow rates 20-200 m3/hr.
Fleck Controls, and1-200 m3/hr                                                                                                                               
for electrical diaphragm valves.

1.1 Top mounted automatic sand filter
1.2 Side mounted auto. Sand filter
1.3 Diaphragm automatic valves
1.4 Electrical valves

1.1 Top mounted automatic sand filter

2-Manual Valves


For larger capacities ,another type of filters are used which can be manufactured

locally with different sizes.
                                                                                             

-Capacity : wide range 20-200 m3/hr

-Material: Steel epoxy coated from inside.                                       
-Valves: automatic or manual
-Distribution sys.

(Details upon request)
 

• Application

1- Industrial uses

2- Medical applications

3- Hotels / Restaurants.

4- Water Treatment Systems

5- Waste water treatment.

• Function

The activated carbon adsorbs traces of chlorine or other oxidants which can damage the
R.O membranes ,cation resin, and organics which foul strongly basic anion resins.

Carbon can also be used to remove taste, odors and other impurities.

When granular carbon beds are used for dechlorination service, the carbon’s capacity is essentially infinite and no regenerative process is employed. Regular backwashing is usually adequate to
remove suspended matter filtered from the water, bacterial slimes that have formed , and to expose
fresh surfaces for contact with the chlorine.
Carbon used to remove dissolved organic matter, however, has a finite capacity that is determined
by its properties and the nature of the organic matter.
 

• Carbon Filters Types

1-Automatic Valves                                                   2-Manual Valves

it can be used as a filter control                                    it can be used as a filter control
to control the service, backwash                                  to control the service, backwash
& rinse cycles automatically.                                       & rinse cycles manually for a wide
for a range of flowrates1-50m3/hr for                          range flow rates 20-200 m3/hr.
Fleck Controls, and1-200 m3/hr
for electrical diaphragm valves.

2.1 Top mounted automatic Carbon filter
2.2 Side mounted auto. Carbon filter
2.3 Diaphragm automatic valves
2.4 Electrical valves

2.1 Top mounted automatic carbon  filter

2-Manual Valves

For larger capacities ,another type of filters are used which can be manufactured

locally with different sizes.
                                                                                         
-Capacity : wide range 20-200 m3/hr

-Material: Steel epoxy coated from inside.                                       
-Valves: automatic or manual
-Distribution sys.

(Details upon request)

• Application

1. Industrial uses
2. Medical applications
3. Hotels / Restaurants.
4. Water Treatment Systems.

 

• Function

In cartridge filter the water flows through the thick wall of the filter where the
particles are trapped throughout the complex openings in the medium. The filter
may be constructed of cotton, cellulose or polypropylene.

Cartridges are usually disposable .

• Filter Parts

The filters consist of the following:


1- Housing
2- Cartridge

Housing

1-Slim line Filter  

- Type : Slim 10” - Length : 10” - In/Out :¾”,1/4”,1/2” - Color :Transparent, white &blue

    

- Type : Slim 20” - Length : 20” - In/Out :¾” - Color :White &blue

2-Big Blue  Filter 

         

	- Type : BB 20” - Length : 20” - Diameter :4” - In/Out : 1” - Color : Blue

 2-S.Steel  Filter 

	Item no.	Description	Flow rate	No. of elements	In/Out
	1	S.S 3*20"	7.2 m3/hr	3 of 20"	2"
	2	S.S 3*40"	14.4 m3/hr	3 of 40"	2"
	3	S.S 7*20"	16.8 m3/hr	7 of 20"	2"
	4	S.S 7*4"	33.6 m3/hr	7 of 40"	2 1/2"
	5	S.S 15*4"	72 m3/hr	15 of 40"	4"
	6	S.S 22*40"	105.6 m3/hr	22 of 40"	6"

Cartridges

• Application