Efficient fiber ball filter, fiber bundle

Efficient Fiber Ball Filter

The fiber ball filter material used inside the high-efficiency fiber ball filter is made of polyester fiber threads tied together to form a spherical (or flat elliptical) shape. Compared with traditional steel particle filter material, it has the advantages of good elasticity, no floating surface, large gaps, long working cycle, and low head loss. During the filtration process, the gaps in the filter layer gradually decrease along the direction of water flow, which is more in line with the ideal distribution gradient of large gaps on the top and small gaps on the bottom of the filter material. It has high efficiency, fast filtration rate (20-50 m/h), large interception capacity, and the filtration cycle of fiber balls is about three times longer than that of sand filter material. The filtration effect is good and can be regenerated. It can be backwashed with soda water, and the flushing water volume is 1-2% of the filtered water volume.
A high-efficiency fiber ball filter with a diameter of over 800 is equipped with a cycloidal pinwheel reducer stirring device. During backwashing, the cylinder is filled with water, and the reducer stirring device is activated to roll the fiber ball filter material up and down and loosen it for easy cleaning. The high-efficiency fiber ball filter is suitable for filtering various water qualities.
Efficient Fiber Bundle Filter
The high-efficiency fiber bundle filter uses specially processed fibers with high porosity and strong adsorption force as the filter material. The interior of the high-efficiency fiber bundle filter consists of several vertical fiber bundles, with the upper end fixed on a porous plate and the lower end fixed on a floating porous plate. Improved the efficiency and effectiveness of the filter without increasing its resistance. When filtering, the floating orifice plate moves along the direction of water flow under the action of inlet water pressure, fully utilizing the principle of fluid movement. The distance between the two orifice plates decreases from large to small, so that the fiber bundles are in a compacted state. Using the principle of fluid mechanics, the density of the fiber filter material is automatically adjusted, fully exerting the interception effect of the entire filter layer. When the inlet turbidity is ≤ 20mg/L, the outlet turbidity is less than 1mg/L.
When cleaning the high-efficiency fiber bundle filter, due to the lack of inlet water pressure, the floating orifice plate returns to its original position, causing the fibers to be in a loose state. Then, water and compressed air are introduced to clean the intercepted and adsorbed impurities thoroughly.

The high-efficiency fiber ball filter is a pressure type fiber filter with excellent structure and performance, which successfully solves various problems of granular filter materials. It is an updated product of granular filter materials such as quartz sand. The high-efficiency fiber ball filter adopts a new type of soft packing - fiber ball/fiber bundle filter element. The filter element is made of specially made fiber filament polypropylene fiber (polypropylene), which belongs to micron level environmentally friendly packing (sand filter material belongs to millimeter level). Its filter diameter can reach tens or even several microns, and it has the advantages of large specific surface area and low filtration resistance, solving the problem that the filtration accuracy of granular filter material is limited by the particle size of the filter material. The small diameter of the filter material greatly increases the specific surface area and surface free energy of the filter material, increases the contact opportunities between impurity particles in water and the filter material, and enhances the adsorption capacity of the filter material, thereby improving the filtration efficiency and pollutant interception capacity.
In order to fully utilize the advantages of the bundle fiber filter material, a pressure chamber and a movable orifice plate adjustment device that can change the fiber density are installed at the lower end of the filter layer of the high-efficiency fiber ball filter. When the fiber ball filter is in operation, water passes through the filter layer from bottom to top, and the adjustable orifice plate device moves upward. Through the compression of the fibers by the pressure chamber, the cross-section of the filter layer along the direction of water flow gradually decreases, and the corresponding pore diameter and pore size of the filter layer gradually decrease, achieving ideal deep filtration. When the filter layer is contaminated and needs to be cleaned and regenerated, the cleaning water passes through the filter layer from top to bottom. At this point, the adjustable device of the movable orifice plate automatically descends, causing the fibers to be pulled apart and in a relaxed state, making it easy to clean.
Efficient fiber bundle filters can effectively remove suspended solids in water and have a significant removal effect on organic matter, colloids, iron, manganese, and other substances in water. Compared with granular filter media such as quartz sand, fiber ball filters have the advantages of fast filtration speed, high accuracy, large interception capacity, easy operation, reliable operation, no need for special maintenance, low cost per ton of water, low self consumption of water, and small footprint. Our company's high-efficiency fiber bundle filters are widely used in industrial wastewater treatment and domestic water treatment in power plants, petroleum, chemical, metallurgical, papermaking, textile, food, beverage, pharmaceutical, tap water, swimming pools and other industries.
Characteristics of Fiber Bundle Filter Media
1. The diameter of a single filament can reach tens or even several micrometers, with enormous surface free energy and specific surface area (specific surface area of a sand filter layer with a diameter of 1 millimeter: 6000m2/m3); The fiber filter layer with a diameter of 50 microns per filament has a specific surface area of 80000 square meters per cubic meter, which greatly increases the contact opportunities between impurity particles in water and the filter material, as well as the adsorption capacity of the filter material. This can significantly improve the filtration efficiency and pollutant interception capacity;
2. Fiber bundle filter material is non entangled, easy to clean, does not shed hair, does not entangle, and does not lose, so the fiber bundle filter element has a long service life of more than 10 years. During this period, there is no need to supplement, which reduces costs, reduces downtime for maintenance, avoids the trouble of frequent filling and replacement of filter material, and reduces labor intensity;
3. Good chemical stability, no chemical reactions occur during the filtration process;
4. No matter how strong the backwash is, there will be no loss of material or damage.
【 Main Features 】
1. High filtration accuracy: The removal rate of suspended solids in water can approach 99%. When the turbidity of natural water treated with good coagulation is 20FTU, the turbidity of filtered water can be less than two degrees;
2. Fast filtration speed: The design flow rate of fiber bundle filters is generally 30m/h, which is 3-5 times that of traditional filters;
3. Large interception capacity: The interception capacity of fiber bundle filters is generally 5-10kg/m3, which is 2-4 times that of traditional filters;
4. Small footprint: To produce the same amount of water, the fiber bundle filter occupies only 1/3 to 1/2 of the traditional filter;
5. Low self consumption rate of water: 1% of the periodic water production, usually treated water can be used for backwashing, and traditional filters have a periodic water production rate of over 3%;
6. Low equipment cost: The ton water cost of fiber ball filters is lower than that of traditional filters;
7. Strong adjustability: parameters such as filtration accuracy, interception capacity, and filtration resistance can be adjusted as needed;
8. No need to replace the filter element: The filter element of the fiber bundle filter can be easily cleaned after being contaminated to restore its filtering performance. The filter element can be regenerated and reused, with a continuous service life of about 10 years.

Specification and Performance	100	120	150	200	220	250	300
Material layer thickness(mm)	1600(Free state)
Filtering speed(m/h)	20～30
Equipment output(m3/h)	24	34	53	94	114	147	210
Net weight of equipment（kg）	1422	1613	2680	3992	4598	6902	8268
Maximum operating pressure	0.60 MPa
filtration capability	5～10 kg/m3(filter material)
Filter head loss	When the filtration fails, the pressure difference between the inlet and outlet is generally low0.10 ～0.25MPa
Suspended solids in pre filtered water(turbidity)	≤20 mg/L (≤20 FTU)			≤50 mg/L (≤50 FTU)
Suspended solids in filtered water(turbidity)	≤1.0 mg/L (≤1.0 FTU)			≤5.0 mg/L (≤5.0 FTU)
Cleaning operation pressure	0.05～0.10 Mpa
Backwash intensity	8～10 L/m2·s
Clean air pressure	0.05 MPaThe maximum limit shall not exceed0.10MPa
Cleaning air intensity	make an appointment60 ～80L/m2·s
clean time	20～30 min

Specification and Performance Table of High Efficiency Fiber Filter Cleaning Air Source with Roots Fan

Product Marking		200	220	250	300
gas source	Pressure（MPa）	0.05
	Import flow（m3/min）	15.9	15.9	19.8	29.6
Roots blower model		L42LD	L42LD	L42LD	L52LD
electricity machine	model	Y180L-4	Y180L-4	Y200L-4	Y225S-4
	Power（kw）	22	22	30	37
	Unit weight（kg）	850	850	1000	1600

【 Installation 】
The fiber bundle filter is placed on a horizontal foundation and fixed with anchor bolts or welded to an anchor plate embedded in the foundation. After the installation of the fiber ball filter, its horizontal deviation shall not exceed 5mm.
After the installation and adjustment of the fiber ball filter, the various pipe valves and external connecting pipelines can be installed. Before installing valves and pipelines, the inner surface of the pipeline and the flange connection surface should be cleaned to prevent rust and oil stains from contaminating the filter layer.
An open channel sewage ditch can be arranged in the equipment workshop, and the upper opening of the ditch should be covered with a cover plate.
The intake manifold must be higher than the highest point of the fiber ball filter to prevent water from flowing back into the Roots blower in case of cleaning errors. If this requirement cannot be met, a check valve should be installed on the air pipeline.
Equipment maintenance and precautions
(1) Fiber filter performance and replacement cycle
The filter material selected for the high-efficiency fiber bundle filter is a polymer chemical fiber material, which mainly filters and adsorbs suspended solids in water through surface physical adsorption. After adsorbing sludge, it can be regenerated by physical methods such as water and air scrubbing. This material has a heat resistance temperature of 106-127 ℃ and strong corrosion resistance to various alkalis and non oxidizing acids, with a continuous service life of not less than 10 years.
(2) Precautions
a. Possible reasons for poor effluent quality:
(1) Filter bed failure
(2) Incomplete cleaning
(3) Inlet water with air
(4) Improper dosage of coagulant
(5) The fluctuation of filtration flow rate is too large
(6) The inlet valve of the cleaning water is not tightly closed
(7) Inaccurate sampling and testing
b. Situations requiring special cleaning:
During the use of fiber ball filters, if a large number of microorganisms multiply or adsorb a large amount of oil stains on the fibers, special cleaning is required. The filter material can be soaked in 2% NaOH solution for 24 hours before cleaning.
Inlet and outlet water quality】
Inlet water quality: suspended solids ≤ 20mg/L, turbidity ≤ 20 F.T.U
Effluent quality: suspended solids ≤ 1.0mg/L turbidity ≤ 1.0 F.T.U
Note: The water before filtration is clean water that has been clarified and filtered through coagulation.