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Sand Media Filter for Sewage Treatment

● Sand media filter is a common equipment in sewage treatment, through multi-layer sand media filtration to remove suspended matter and impurities, improve the quality of wastewater, is a reliable wastewater treatment solution.
● The multimedia sand filter has a unique water distributor and water collector inside, which uses different media to effectively remove particulate matter and reduce turbidity.
● It has a unique two-way automatic flushing valve, which can realize backwashing of multiple standard high-speed sand cylinders one by one during normal system operation, and fully automatic program control.
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Product Description

Product Process

Shallow sand filter is a medium filtration system which is composed of one or more standard high rate filtration units. Water flows through internal water distributor and water collector and different medium can remove particulate matter and reduce turbidity rate. If specific filter medium are used like activated carbon and anthracite, they can adsorb and remove relevant organic matter and ions.

Filtration process

When the system is in a filtering state, the pressure water flows into the water distribution system from the inlet of filtration units, arriving evenly filter material layers. After arriving, the suspended material of water is intercepted by the filter material. The bottom of the filter has a water collector with precision gaps. Filtered clean water is evenly collected, and flows out of the filter.  With the accumulation of impurities in the filter material layer, the pressure loss increases. When the differential pressure increases to a set value or stated cleaning time, the system will automatically turn into the backwash state. The pressurized water flows from the water collecting device into the filter material layer, and wash it. So the intercepted pollutants fall off and go out of the filtration system. Backwash continues about at least two minutes, and the valve automatically makes the system turn into the filtering state.

Product Parameter

Technical Parameters of  sand media filters

Model QCS-40 QCS-50 QCS-60 QCS-70 QCS-80 QCS-100 QCS-120 QCS-140 QCS-150 QCS-180 QCS-200 QCS-240
Tank diameter 1200mm 1400mm 1600mm 1800mm 2000mm 2200mm 2400mm 2500mm 2600mm 2800mm 3000mm 3200mm
Water inlet and outlet diameter DN100 DN100 DN100 DN150 DN150 DN150 DN200 DN200 DN200 DN200 DN250 DN250
Tank material Carbon steel/stainless steel
Tank anti-corrosion Paint anti-corrosion
Single filter area(m2) 1.1 1.5 2.0 2.5 3.0 3.8 4.5 5.0 5.3 6.1 7.0 8.0
Filtration speed (m/h) 20-35
Single unit processing capacity (m3/h) 40 50 60 70 80 100 120 140 150 180 200 240
Work pressure (MPa) 0.2-0.4
Backwash intensity L/(S*m2) 8—12
Single tank backwash time (s) 60 60 90 120 120 180 200 300 300 300 500 600
Backwash interval (h) 4—8
Filter media form quartz sand
Filter particle size (mm) 0.6-1.2
Filter material thickness (mm) 800 800 800 1200 1200 1200 1200 1200 1200 1200 1200 1200
Net weight of tank (t) 0.4 0.5 0.6 1.5 2.0 2.3 2.6 2.8 3.0 3.3 3.9 4.5
Tank operating weight (t) 3.5 4.5 5.0 13.5 16.8 21 25 27 30 35 40 45

Product Application

Sand media filtration are suitable for water treatment, sewage treatment, and industrial wastewater treatment, such as electronic power, petrochemical industry, metallurgy and electroplating, papermaking and textiles, pharmaceutical dialysis, food and beverages, drinking water, factory and enterprise water, swimming pools, etc. It can meet the liquid filtration needs of various industries.

electronic power industry

electronic power industry

Pharmaceutical Industry

Pharmaceutical Industry

Paper Industry

Paper Industry

1. Industrial process water filtration -- such as nozzle, heat exchange station water protection filtration.

2. Industrial circulating water filtration -- steel, metallurgy, paper, heat exchanger, power, petrochemical, food, air conditioning system, and other industries.

3. Raw water treatment and filtration -- surface water, river water, river water, lake water, sea water, etc.
4. Aquaculture industry, swimming industry, water park and other industries water filtration.
5. Irrigation filtration -- water filtration for farmland, parks, municipal and golf courses.

Product Advantages

● Compact structure, small size, easy to install and save space.

● The shallow sand filter has good anti-corrosion performance and long service life. It can be installed indoors and outdoors, and can also be installed in layers up and down. It has strong adaptability.

● Automatic backwash: The backwash of this multimedia sand filter is automatically recognized and controlled by the intelligent control system without manual intervention. Even if the suspended solids in the water fluctuate, the equipment may automatically adapt.

● The water supply is uninterrupted:when the equipment is backwashed, the filtration process is carried out at the same time, and the system supplies water as usual.

Great wealth roots in purification of sewage, which turns the Earth into a healthy planet.
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