Gravity Sand Filter Manufactures for Seawater
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|Min. Order:||1 Piece|
|Production Capacity:||2, 000PCS/Year|
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- Model NO.: HSLQ-T
- Motive Force: Electric power
- Performance: Efficient Filtration
- Water Flow: Customized
- Pressure of Compressed Air: More Than 0.4MPa
- Application: Water Treatment
- Trademark: PEIDE
- Specification: ISO9001: 2008
- Usage: Environmental Protection
- Style: Vertical
- Certification: SGS, ISO
- Flow of Compressed Air: 125L/Min
- Height of Sand Bed: 2.3m
- Brand Name: Peide
- Transport Package: Wooden Cases
- Origin: China
Trap organics,suspended solid,colloidal solid,microorganisms in water.
Remove nitrogen and phosphorus
Reduce COD(Chemical Oxygen Demand) in water
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
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
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 existing facilities.
Applied to 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.
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 level.
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%
|Filtration area m2||Height of sand bed (m)|
6.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.
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
1.Continuous sand filter with aeration device
1.HSLQ type continuous sand filter is a kind of bio-filter,which designed to remove BOD, NH3-N etc., Unlike
ordinary type filter,it added aeration device.
In addition to the advantages of ordinary filter, DA type continuous sand filter also has a high oxygen
utilization, while achieving the removal of BOD, NH3-N.
The internal structure of HSLQ type continuous sand filter is divided into two parts: filter area and
biochemical area. Independent functionfor each other,without mutual interference.
HSLQ series denitrification active sand filters
2.HSLQ type denitrification continuous sand filter
Denitrification continuous sand filter is designed specifically for denitrification filter, combine the filter and
denitrification device together.It is widely used in renovation and expansion project.
Filtering media is quartz sand, which ensure the filtering effect, and biological treatment effect.
Cover will prevent interference of oxygen in the air during denitrification process,the cover is on the top
1. If the downtime is less than 3 days, don't drain away the residual water
2. If the downtime is during 3-15 days, drain away the residual water on the day of closing filter, in avoid
Of sea sand hardening, algae growing
3. If the downtime is more than 15 days, drain away the residual water, and inject the clean water from the
Top of filter to wash the sand inside the tank. Don't stop until you get the clean water from the bottom of
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