FRP/Carbon Steel Sand Media Filter Tank for Drinking Water
Features of the water filter
Simple sand filter device structure, operation, backwash more
convenient, its operations mainly through regulating four valves,
change the water direction changes.
Quartz sand filling should be noted: quartz sand interception layer
specification 0.5-1.0mm, a height of 700mm or more, the support
layerhas two layers, namely, 1-2mm in height packed 150-200mm
,2-3mm in height packed 150 -200mm. Untreated water, its
interceptioncapabilities 0.5-1.0Kg/m3, after water lime treatment,
the interception capacity of 1.5-2.0 Kg/m3, coagulation treatment
for the treated water, the interception capacity of 2.5-3.0 Kg/m3.
Raw water requirement:
- Iron content: ≤20mg/L;
- Manganese content: ≤3mg/L;
- Raw water turbidity: <20FTU;
- Alkalinity: ≤2mg/L;
Working Environment Parameters
- Working Temperature:5-60℃
- Working pressure: ≤0.6MPa
- Working style: pressure style
- Operating style: Current top-down
- Filter speed: 6-10m/h(remove iron),5-8m/h(remove manganese)
- Operation period: it depends on raw water condition, not less than
Filter technology parameters:
Filter filtration rate: 8 ~ 300m3 / h
Flow Velocity: 8-15m/h
Backwash time: 10 to 15 minutes
Working pressure: ≤ 0.6Mpa
Water outlet: 2-5mg/L
Water inlet: <10mg/L
Water outlet: <2mg/L
Design temperature: 5 ~ 50C
Single sand filter straight Height: 1500mm
Activated carbon / cationic resin filter Height: 1000mm
Key Specifications / Features
Name: Sand Filter.
Material: Carbon Steel SA516M Gr.485.
Manufacture Code: Passport.
Specification: ID 2600mm x 2200mm/102 Inch x 86 Inch.
Design Pressure: 0.6 MPa/6 Bar/87 PSI.
Design Temperature: 40℃/104℉.
How Sand Filter works?
Sand filter is a great water purification equipment which use sand
as filter media to remove suspended solids for
irrigation water, cooling water, swimming pool water etc.
sand filters use this simple but very effective method to give you
the filtration you need to clean your water. Water
enters sand filter and is channeled to the top of the filter and
falls on a bed of sand. Filtered water then exits through
laterals at the bottom of the filter and the trapped dirt in the
sand is removed via periodic backwashing and infrequent
sand replacement. This sand filter is easy to install and very
simple to maintain.
Using scope for Sand Filter Machine
1. Chemical: Resin powder, palette, washing powder, paint, soda and
citric acid, etc.
2. Abrasive material and ceramic industry: alumina, arnaceous
quartz, slurry, and spray soil grain etc.
3. Food industry: Sugar, salt, Alkali, monosodium glutamate, milk
powder, soybean milk, yeast, juice, soy sauce, vinegar etc.
4. Paper Making Industries: Coated slurry, exhaust liquid, paper
making liquid and waste water reclamation, etc.
5. Metallurgy and mining: Titanium oxide, zinc oxide,
electromagnetism materials, metal materials, welding rod materials,
Carbon Steel Sand Filter/Multimedia Filter/Pressure Filter Tank
Activated carbon filter is mainly using granular activated carbon
adsorption mechanism to adsorb organic matter and residual chlorine
in water , to remove the colloid, iron compound, suspended solids,
reduce the chromaticity and turbidity, and ensure the follow-up of
water treatment in good operation, the device has good filtering
efficiency, low operating cost, easy operation, etc.
In the field of water treatment, activated carbon filter is
primarily used for removing the tiny pollutants in the water, the
range of application include decoloring, in addition to smell,
remove all kinds of soluble organic matters.In the water purifying
process,which can be used as an ion exchange and electroosmosis
analysis, the reverse osmosis pretreatment, removal of organic
matter, colloid and residual chlorine, etc.The activated carbon
filter in our company, according to the type of control can be
divided into manual type and automatic type , according to the tank
material can be divided into FRP tank, carbon steel, stainless
steel pot, pot wall can do polyurea corrosion or according to user
requirements rubber lining anticorrosion.
The multi-media filtration water Water treatment equipment mainly takes the quartz sand,blind coal and so on as the filtration
medium to remove the suspended solids,mechanical
impurities,organics and to lower the turbidity of the water.
The active carbon filtration water treatment equipment mainly takes the active carbon as the filtration medium to absorb
& remove the pigment,organics,residual clorine and colloid etc
in the water.
The manganese sand filter mainly takes the natural or synthetic manganese sand as the
filtration medium to remove the divalent iron ions,manganese ions
in the water and to lower the turbidity of the raw water
The multi-media filter
It is able to remove the big suspended solids, lower the water
SDI,meet the requirement for the deep purification water;
advantages:cost saving;lower operating expense;easy to operate;the
filtering media can be used repeatedly after backwashing;long
The active carbon filter
High efficiency;lower operating expense;lower maintaining
charges;lower one-time investment;lower head loss;lower requirement
for inflow water quality;stable effluent quality;brilliant
filtration,easy to reorganize & expand,smaller land
The residual clorine in the water after being filtered by active
carbon filter is no more than 0.1PPM
The performance to remove the odar,organics,colloid,iron and
residual clorine is outstanding;
It's conductive to lower the turbidity,chroma,water quality
purification and to reduce the pollution to follow-up systems
The manganese sand filter
Smaller filtration resistance,the specific surface area is
bigger,higher deironing efficiency
Diversified running modes,both manual operation and PLC full
automatic running is acceptable;in automatic mode,it can be
controlled by plane multitanderm valve or several automatic valves
The Filtering Process
Filtering with media filters, also known as depth filtration, is
done by filtering water through a thick layer of graded particles,
called the filter bed. These particles can be sand, gravel or other
granular materials. The filtration degree depends on the effective
size of the bedding and the water velocity through the filter.
Raw water enters from the filter inlet (1) and percolates through
the filter bed (2). Suspended materials come into contact and
attach to the media particles. Clean water flows through the
filtration nozzles (3) and out of the filter via the outlet valve
The gradual dirt buildup in the filter bed causes an increase in
the pressure differential across the filter and when it reaches its
maximum design value, a cleaning process should be performed. In
automatic media filter installations a pressure differential switch
senses the pressure differential and when it reaches a preset
value, the self cleaning process begins
The Cleaning Process
Cleaning is done by backwashing; pressurized water flows in reverse
direction – from the nozzles upwards, causing suspension of the
filter bed, thus releasing the suspended matter from the bedding.
The dirt particles are then washed out of the filter through the
back-flush valve. In automatic media filters installations the
cleaning process is done by the system's controller. When the
pressure differential switch senses that the differential pressure
across the system reached a pre-set value, a signal is sent to the
flushing controller and the self cleaning process begins.