Filter plate is a key device in the water treatment process, in the filter to play the filter layer filter and backwash water (gas) dual role. The quality of the filter plate (especially the smoothness and accuracy of the filter plate) is directly related to the water plant, sewage treatment plant water quality, water and long-term operation. The traditional filter water distribution system filter and backwash when the resistance, water distribution is not uniform, more than the dead water, the filter is easy to compaction, mud, at the same time due to local flushing strength caused by the support layer loose, leakage and other adverse consequences.
The accuracy of the horizontal installation of the filter plate is high, and its important basis is the accuracy of the positioning of the stainless steel parts used in the whole pool of the filter beam and the embedded riveting plate. Therefore, the leveling of the filter beam requires horizontal line and must be equipped with high standard Metal molds and skilled manufacturing technology, in order to ensure the smoothness of the filter beam, flat leveling, and then install the filter plate.
1, according to the requirements of the design drawings for construction, a single pool surface level error greater than ± 2mm, the grid filter height error is not greater than ± 5mm;
2, filter plate joints do not leak, do not leak, can withstand the pressure of washing;
3, before the laying of the filter plate, with the level of detection beam surface elevation value of the error is less than ± 2mm;
4, filter plate joints with 903 polymer cement mortar for embedded and filled, caulking in the wet environment for three days, seven days after put into use;
5, the construction should pay attention to the mortar can not leak into the pool or sealing the filter, after installation, to clean up the filter plate mortar.
With the level of detection level, plus plug water detection to close. The success or failure of the installation of the filter plate directly related to the success or failure of gas and water backwashing process. Because compared with the traditional single water rinse process, gas and water backwashing process by gas recoil, it requires a single pool filter plate level error is not greater than ± 2mm, the grid filter height error is not greater than ± 5mm, the only way It will not produce recoil non-uniform lead to sludge agglomeration, affecting water quality and treatment effect.
The diaphragm plate consists of two diaphragms and core plates, which are passed into the outer chamber (water or compressed air, etc.) into the chamber between the core plate and the diaphragm, so that the diaphragm is swollen to the diaphragm plate and the filter plate The composition of the filter chamber to be compressed, and thus better separation, improve the solid content. Which diaphragm as the main moving parts, repeated movement of the diaphragm easily deformed and damaged.
Diaphragm filter plate is divided into rubber diaphragm plate and polypropylene diaphragm plate. The rubber diaphragm plate is generally embedded in the groove of the core plate for easy disassembly and replacement because the rubber diaphragm has a high elasticity and is therefore less susceptible to damage. Polypropylene filter diaphragm is generally made of integral welding, the use of welding from the diaphragm can not be replaced.