XZL2200 Rotary Microfilter

　　The XZL2200 rotary microfilter is mainly used for the deep treatment of wastewater, such as the upgrading and transformation of sewage plants (the effluent SS can be ≤10mg/L), power plant and steel plant cooling circulating water treatment, and papermaking and dyeing industrial water treatment.
Features
　　Raw water can be introduced by pipe or channel gravity self-flow, and water is distributed and filtered in an inward-outward manner. No separate clear water tank is needed, resulting in a relatively small footprint and low civil engineering investment.
　　The filter cloth uses food-grade, non-toxic, non-polluting, anti-algae, and environmentally friendly 316Ti stainless steel woven fabric. The filter cloth has a precisely defined gap, a high regeneration rate, a large water filtration free area, high tensile strength, small deformation, and a service life of more than 15 years.
　　The rotation of the device is periodic. During filtration, the device is generally stationary. When the inner filtration surface of the filter disc becomes smaller and the resistance increases, a water flow pressure difference is formed. The device rotates and backwashes, the pressure difference is eliminated, the device is stationary for water filtration, and the water filtration process is not interrupted during the device rotation and backwashing.
　　Since the raw water completely enters the rotary microfiltration inner tank for filtration, the filter pool collects clean filtered liquid. The filter pool does not need periodic drainage during operation, there are no sewage control requirements during operation, and the operation management is very simple.
　　The device uses filtered liquid for periodic backwashing. The backwashing consumes less water and is highly efficient. The system has a small amount of sewage discharge, and the cleaning and discharge of pollutants do not affect the water quality and quantity of raw water and filtered water.
　　Each microfiltration machine washing water device only needs one water inlet electric gate valve.
　　The filter cloth on each disc is tensioned on the fan-shaped bracket by a tensioning clamp. Due to the high tensile strength of the stainless steel fabric and the very small expansion and contraction coefficient, the action of external washing water and changes in water temperature and atmospheric temperature will not change the defined filter cloth mesh number. The mechanical aging process of the filter cloth is very slow, and it can adapt to long-term continuous outdoor use, and the effluent water quality is stable.
　　When replacing the turntable of the device, it is not necessary to drain the clear water in the drainage pool. Only the disc to be replaced needs to be rotated to the liquid surface before replacement. The new disc can be easily interchanged with the original spray bar, making maintenance convenient and reducing the number and variety of spare parts.
　　The main drive motor and washing water pump of the device have low power consumption.
　　The device is made of all stainless steel and has undergone overall pickling and passivation treatment, with strong corrosion resistance and anti-aging performance, and a long service life.
　　Fully automatic operation, few control points, simple and safe operation management.
　　Reasonable price-performance ratio and low operating cost.
Working Principle
　　The rotary microfiltration process works based on the time-tested and highly effective rotary drum filtration method. The machine consists of a series of horizontally installed, rotatable filter discs mounted on a central shaft. The maximum water immersion volume can reach 60%. Each disc is composed of individual stainless steel filter components. Stainless steel mesh is wrapped around the components. The wastewater to be treated is filtered from the inside out, and the filtered liquid is discharged from the end of the machine. During filtration, the disc is stationary. Under the action of gravity, solid matter accumulates on the screen. As the filtration time increases, the mesh fabric will be covered by the retained solid matter. This phenomenon will cause a pressure difference to rise. After reaching the preset maximum pressure difference, the disc begins to rotate slowly, and the solid matter deposited on the screen can be cleaned by the washing bar. The pump directly delivers the filtered wastewater to the nozzle to provide washing water. The washing jet dissolves the solid matter, which is backwashed and discharged from the housing through the collection and drainage trough installed under the component. This cleaning process does not interrupt the filtration process.