Year1
- 型号：
- SF1000
- 滤水量：
- 30m3/h
- 纳污量：
- 15-35kg/m3
It is a series of special filters with comet fiber filter material as the core technology. During filtration, the comet nuclei with larger specific gravity compact the fiber bundles. At the same time, due to the small size of the comet nuclei, they have little effect on the uniformity of the gap distribution in the filter section, thereby improving the filter bed's ability to intercept dirt. During backwashing, due to the difference in specific gravity between the comet nucleus and the comet tail fiber bundles, the comet tail fibers spread out and swing with the backwash water flow, resulting in a strong drag force. The mutual collision between the filter materials also intensifies the flow of the fibers. The mechanical force in the water and the irregular shape of the filter material cause the filter material to rotate under the action of the backwash flow, which strengthens the force on the filter material during backwash. The combined effect of the above forces makes the filter material adhere to the surface of the fiber. The solid particles fall off easily, thereby improving the cleanliness of the filter material.
Characteristics of comet fiber filter
High filtration precision: the removal rate of suspended solids in water (with flocculant added) can reach
or above, and it can effectively remove macromolecular organic matter, viruses, bacteria, colloids, Iron and other impurities have a certain removal effect
Fast filtration speed: generally
r/
, up to
r/
, which is faster than ordinary sand filters
More than times
Large dirt holding capacity: generally
r/
, which is more than
times that of ordinary sand filters
Less dosage, low operating costs: Due to the characteristics of the filter bed structure and the filter material itself, the dosage of flocculant is conventional technology
r//,
The operating costs are also reduced
Small floor space: the same preparation The water volume and the area occupied are less than that of ordinary sand filters
r/
Strong load impact resistance: it can withstand the impact of high turbidity water in a short period of time while still ensuring the quality of the effluent.
Comet type fiber filter process flow description
Add flocculant to the water inlet pipe section, and the flocculant and raw water are quickly and evenly mixed through the stirring and mixing action of the water pump impeller (static mixer mixing), and mixed with The fine suspended substances and colloidal substances in the raw water undergo micro-flocculation reaction. The raw water enters the internal water distribution structure of the high-efficiency fiber filter for uniform water distribution. The raw water after the flocculation reaction passes through the filter bed, forming micro-flocculation filtration and contact flocculation filtration in the filter bed. Finally, small suspended matter, colloids, bacteria, viruses, and organic matter in the water are eliminated. , iron and other impurities are removed.
The turbidity of the effluent at the beginning of filtration generally does not meet the requirements. The effluent at this time is called positive washing drainage (or primary filtered water). Positive washing drainage should be inspected in time. After the effluent turbidity reaches the standard, switch the valve and send qualified water to the clean water tank or other pipelines until the filtration head loss reaches the set value or the set filtration time or effluent turbidity is reached. It is a filtration cycle until it is unqualified, and backwashing must be performed at this time.
During backwashing, clean water passes through the bottom of the filter, loosening the filter bed from bottom to top
, then stops water washing and changes to air washing
, and then backwashes with air and water at the same time
Finally, water washing
The whole backwashing process is about
.
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