Self Flushing Continuous Flow Sand Filter Water Filtration
|FOB Price:||US $4,800-5,000 / Piece|
|Min. Order:||1 Piece|
|Min. Order||FOB Price|
|1 Piece||US $4,800-5,000/ Piece|
|Production Capacity:||2, 000PCS/Year|
|Transport Package:||Wooden Packaging|
|Payment Terms:||L/C, T/T, D/P, Paypal, Money Gram|
- Model NO.: HSLQ-T
- Motive Force: Electric power
- Performance: Efficient Filtration
- Filtration Area: 0.3-7.0 M2
- Cod Removal: 8~1.6mg/Mgss
- Ammonia Removal: 10~20%
- Specification: ISO9001: 2008
- HS Code: 8421299090
- Usage: Environmental Protection, Chemical Industry
- Style: Vertical
- Certification: SGS, ISO
- BOD Removal: 0.3~0.6mg/Mgss
- Turbidity: <0.3ntu
- Trademark: PEIDE
- Origin: China
Self Flushing Continuous Flow Sand Filter Water Filtration
Flow sand filter Function:
industrial process water,sewage and industrial waste water purification. It is a
kind of continuous filter,combined flocculent,settling,filtering together.
For tertiary filtration of reclaimed water, the gravity sand filter offers advanced
treatment:efficiently remove suspended and colloidal solid, oil,iron and
manganese oxide,and kill the bacterial,algae,virus in water.
Route of water: Raw water enter into inlet pipe(1)feed into sand filter(2)and
water distributor(3) into sand bed(4),
Raw water will be purified when passing through the sand bed.
The filtrate flow out from(5).
Route of Sand: when the water flow upward,sand bed move downward
continuously.The dirty sand was drawn from the bottom of sand bed,
and begin to wash the dirty sand,return the clean sand back to
the top of sand bed(7)
Route of Air: Circulation of sand is based on "gas principle",compressed air
will push the mixture of sand and water into the center pipe(8),and move
upward.Suspended solid and sand separated by strong friction.Reject water
pour out (9).Sand falling down in sand washer,amount of sand in air lifting
pipe is decided by the amount of compressed air.
Sand Washer: The washer(10)with its well-designed hydraulic features is positioned around the airlift pipeline.
The sand particles fall through the washer,where they are finally washed by
a small amount of clean filtrate,flowing through the washer counter currently.
The filtrate flow is generated by a difference in discharge level between the
filtrate(11) and the wash water(9)
Automatic control manner: include electric control and Air control.
Electrical control cabinet:start up, operation,alarm and other functions.
During normal operation, the electrical
control cabinet make it continuous flushing; when running abnormal,
the warning signal will be transmitted to the control box, then the program
will be issued a directive to stop filtering.
Air control cabinet: control the compressed air passing through the solenoid
valve and feed into the air flow meter.
The pressure switch is set to detect the inlet pressure of the solenoid valve,
so that when the compressed air pressure is lower than the set value,
the pressure switch and the alarm starts, while stopping the supply of
compressed air. Further, when the pressure control valve or solenoid valve fails,
it will alarm and stop the supply of compressed air.
Characteristics of Flow sand filter
High Efficiency: Work online 24 hours,no need stop to backwash
Low operating cost:No need the high flow and high lift backwash pump,
and it can be programmed to control intermittent wash sand control mode,
greatly reducing operating costs.
Low maintenance cost: without any moving parts, low failure rate during
operation and low maintenance costs.
Low one-time investment: no coagulation tank,
clarify pool and other facilities, filters, high utilization
Lower requirements on inlet water quality: long time bear SS: 150mg / L.
Can withstand short time SS:250mg / L.
Low Head Loss: Due to the single-stage filter,we clean the sand timely,
head loss will be reduced to 0.5m Efficient Filtration,
Stable outlet water quality: Due to the timely clean filter can ensure stable
and efficient filtration, no water quality cyclical fluctuations.
Easy for expansion: Unit operating mode can be adjusted according to changes
in water quality and quantity of filters, easy to renovate and expansion of
Flow sand filter Application:
Appliedto the town water supply, water plants, municipal wastewater treatment,
industrial wastewater treatment,recycling cooling water treatment, process water treatment, seawater purification, algae laden water filtration.
Flow sand filter Parameter
Surface load in the unit time per filter surface impurities trapped,
units:mgSS / m2h.
Recommended active sand filter surface load values are as follows:
Continuous sand filter can withstand a higher load than the value of the surface
in a short time.
Filtering area can be determined by the largest surface area of the filter load
and raw water quality and quantity.
For security, the actual selection should be slightly larger than the calculated
value of the filter area.
Work flow rate can be calculated by the raw water flow and filters
the wash service area. Note that when the
flow rate rises to a certain level, the biological flocculation experience
disintegration or dissolution of the filter
or filters will produce flow phenomenon. In the modeling work should ensure
That the filter flow rates below this evel.
Temperature factors should also be considered, in the low-temperature region,the sand depth is generally
greater than 2 meters.
Under normal operating conditions, the activity of continuous sand filter
can ensures the following effects:
Color: <5 degrees
Algae removal rate close to 100%
Table of Continuous Sand Filter
|Model||Filtration area m2||Height of sand bed (m)|
How to choose the suitable model:
1.Choose the height of sand bed by inlet and outlet water quality.
2.B type is concrete structures, T type is movable active sand filters;
material can be SS304, SS316L,FRP,
high chrome alloy steel, carbon steel (corrosion-resistant) or other specified materials.
Stripping mode: you can select internal circulation or external circulation.
SS:Less than or equal to 5mg/l(dose flocculant),
SS:Less than or equal to 10mg/l(without flocculant)
Total phosphorus removal:70~95%(dose flocculant)
Total phosphorus removal:5~20%(without flocculant)
NOTE: To improve the COD and ammonia nitrogen removal, turn to the use,
of biological treatment
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