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What is the filtration speed and working principle of the NORGREN Nobel filter?

NORGREN filter filtration rate:
When the solid particles in the suspension are large and the particle size is uniform, the pores of the filtered filter residue layer are relatively smooth, and the filtrate passes through the filter residue layer at a relatively high speed. The use of a coagulant to aggregate fine particles into larger agglomerates helps to increase the filtration speed.
For the suspension with fast sedimentation rate of solid particles, the filter applied in the upper part of the filter medium is applied so that the filtration direction is consistent with the direction of gravity, and the coarse particles are first settled, which can reduce the clogging of the filter medium and the filter residue layer; in the difficult-to-filter suspension ( If the solid particles such as diatomaceous earth and expanded perlite are mixed into the colloid, the filter residue layer can be loosened; when the viscosity of the filtrate is large, the suspension can be heated to lower the viscosity. These measures can speed up the filtration.

How does the NORGREN filter work:
The water to be treated by the filter enters the body through the water inlet, and impurities in the water are deposited on the stainless steel filter screen, thereby generating a pressure difference. The differential pressure switch monitors the pressure difference between the inlet and outlet. When the differential pressure reaches the set value, the electric controller supplies the hydraulic control valve to drive the motor signal. After the equipment is installed, the technician will debug and set the filtration time and cleaning conversion time. The water to be treated enters the body through the water inlet, and the filter starts to work normally. When the preset cleaning time is reached, the electric controller gives the hydraulic control valve. Driving the motor signal, triggering the following actions: the motor drives the brush to rotate, and the filter element is cleaned. At the same time, the control valve is opened for sewage discharge. The entire cleaning process only lasts for several tens of seconds. When the cleaning is finished, the control valve is closed and the motor stops rotating. The system returns to its initial state and begins the next filtration process. The inside of the filter casing is mainly composed of a coarse filter mesh, a fine filter mesh, a suction pipe, a stainless steel brush or a stainless steel nozzle, a sealing ring, an anti-corrosion coating, a rotating shaft and the like.

NORGREN filter performance characteristics:
1. Efficient and precise filtration: special structure of filter disc filter technology, precise and sensitive performance, to ensure that only particles with smaller particle size than required to enter the system, is the most effective filtration system; specifications are 5, 10, 20, 55, 100, 130, 200, etc., users can choose different precision filter discs according to water requirements. System traffic can be flexibly adjusted as needed.
2. Standard modularization, saving land occupation: The system is based on standard disc filter unit. According to the modular design, the user can choose according to the needs, flexible and interchangeable. The system is compact and covers an extremely small area. It can be flexibly used for installation in corner spaces. For example, the equipment with a water volume of 300m3/h covers an area of only about 6m2 (general water quality, filtration level 100).
3. Fully automatic operation, continuous water discharge: between the units in the filter combination, the backwashing process alternates alternately, and the work and backwashing states are automatically switched to ensure continuous water discharge; the backwash consumes very little water, only It accounts for 0.5% of the water output; if it is combined with air-assisted backwashing, the self-consumption water can be reduced to less than 0.2%. High-speed and thorough backwashing in just tens of seconds
4. Long service life: The new plastic filter element is firm, wear-free, non-corrosive and rarely scaled. After years of industrial practical verification, it will not wear out after 6~10 years, it will not aging, and the filtration and backwashing effect will not be used. Time is getting worse.
5. High quality, low maintenance: The products meet the corresponding quality standards. All products are tested and commissioned by simulated working conditions before leaving the factory. No special tools are required, few parts are easy to use; only easy to use, only regular inspection, almost no Daily maintenance is required.

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