Candle filter is a kind of efficient filter equipment, its working principle and application in the field of environmental protection are of great significance.
First, the working principle of the candle filter
The candle-type filter mainly uses the filtration effect of the filter membrane to retain suspended matter, particulate matter and harmful substances in the liquid to achieve the purpose of purifying the water quality. Its working principle can be divided into the following steps:
Filtration process: After the filtered liquid enters the filter cartridge, under the action of pressure, the suspended matter, particulate matter and harmful substances in the liquid are intercepted by the filter membrane, and the clean liquid flows out from the top of the filter membrane.
Rotating cleaning process: Under the action of the driving device, the filter cartridge continuously rotates, so that the impurities on the surface of the filter membrane are continuously washed. At the same time, the cleaning liquid is cleaned by high pressure on the filter membrane surface through the nozzle to remove surface impurities.
Liquid recovery process: The cleaned liquid re-enters the filtration system through the recovery device to continue filtering.
Second,candle filter in the field of environmental protection application
Candle filter has a wide range of applications in the field of environmental protection, mainly in the following aspects:
Water treatment: In the field of water treatment, candle filters are widely used to purify water quality. Improve water quality by filtering suspended solids, particulate matter and harmful substances to meet domestic and industrial water needs.
Sewage treatment: In sewage treatment, the candle filter can be combined with other sewage treatment processes to carry out in-depth treatment of sewage. For example, in the activated sludge method, the candle filter can effectively remove suspended matter and solid matter in the sludge, improving the efficiency of sewage treatment.
Industrial wastewater treatment: In terms of industrial wastewater treatment, candle filters can trap harmful substances and heavy metal ions in wastewater to prevent pollution to the environment. At the same time, the waste water treated by the candle filter can be recycled to achieve waste water reduction, resource recovery and harmless treatment.
Radioactive wastewater treatment: In terms of radioactive wastewater treatment, candle filters can remove radioactive substances in wastewater, reduce the level of radioactivity in wastewater, and meet national emission standards.
Solid waste treatment: In terms of solid waste treatment, candle filters can trap harmful substances in solid waste and reduce pollution to the environment. At the same time, the solid waste treated by the candle filter can be utilized as resources to achieve waste reduction, resource utilization and harmless treatment.