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Ceramic membrane filter
Ceramic membrane filters generally operate with two or more units in parallel, with two units forming a group.
Dirty water enters from the filter inlet, first passing through the coarse filter screen to remove larger particles, then reaching the fine filter screen. During filtration, the fine filter screen gradually accumulates dirt and impurities from the water, forming a filter impurity layer. Because the impurity layer accumulates on the inside of the fine filter screen, a pressure difference forms on the inside and outside of the fine filter screen. When the pressure difference of the self-cleaning filter reaches the preset value, a switch signal is sent to the control box PLC system to start a cleaning cycle. Cleaning process: The cleaning mechanism of the fully automatic negative pressure suction filter is a stainless steel spiral up-and-down moving suction scanner. It is hollow in structure, with several suction nozzles vertically distributed at certain distances along its axis. The inside of the suction scanner communicates with the 3” drain valve. When the drain valve opens, the pressure difference between the internal water pressure of the filter and the external atmospheric pressure generates strong suction at each suction nozzle. At each suction nozzle, water flows rapidly from outside to inside in reverse, washing impurities attached to the inner wall of the filter screen into the suction nozzle, through the hollow shaft of the suction scanner, then discharged through the drain valve, completing the cleaning process which takes about 30-60 seconds. At this time, the pressure difference returns to normal, the cleaning process ends, and filtration resumes. During cleaning, the system continues to flow.
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Ceramic membrane filter
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Working Principle
Ceramic membrane filters generally operate with two or more units running in parallel, with two units forming a group. The effluent from one unit is used as the backwash influent for the other. This unique design not only saves the use of backwash water pumps but also conserves energy such as water and electricity, significantly reducing equipment operation and cost, enabling full automation and intelligent control. Under external pressure, wastewater permeates through the micropores of the ceramic membrane filter tubes into the filtration chamber and flows out through the outlet. Meanwhile, impurities are trapped and deposited in the sludge collection chamber and discharged through the drainage outlet when accumulated to a certain amount. After filtration by the ceramic tubes, most suspended solids and oil molecules in the water are removed. After running for a period, some mechanical impurities adhere to the surface of the ceramic membrane tubes under the water flow, reducing membrane flux and increasing the pressure difference between the inlet and outlet. At this point, backwashing should be performed to ensure filtration effectiveness. The normal operation cycle is over 48 hours, with backwashing triggered by pressure or time settings according to specific conditions. The filter elements are cleaned using water or air-water backwash. The equipment can be operated manually or controlled automatically via microcomputer interlock.
Application Fields
◆ Petrochemical systems;
◆ Steel and metallurgical circulating water systems;
◆ Industrial circulating water systems;
◆ Ammonia water treatment in the coking industry;
◆ Treatment of oily emulsion wastewater in the automotive industry.
Dirty water enters from the filter inlet, first passing through the coarse filter screen to remove larger particles, then reaching the fine filter screen. During filtration, the fine filter screen gradually accumulates dirt and impurities from the water, forming a filter impurity layer. Because the impurity layer accumulates on the inside of the fine filter screen, a pressure difference forms on the inside and outside of the fine filter screen. When the pressure difference of the self-cleaning filter reaches the preset value, a switch signal is sent to the control box PLC system to start a cleaning cycle. Cleaning process: The cleaning mechanism of the fully automatic negative pressure suction filter is a stainless steel spiral up-and-down moving suction scanner. It is hollow in structure, with several suction nozzles vertically distributed at certain distances along its axis. The inside of the suction scanner communicates with the 3” drain valve. When the drain valve opens, the pressure difference between the internal water pressure of the filter and the external atmospheric pressure generates strong suction at each suction nozzle. At each suction nozzle, water flows rapidly from outside to inside in reverse, washing impurities attached to the inner wall of the filter screen into the suction nozzle, through the hollow shaft of the suction scanner, then discharged through the drain valve, completing the cleaning process which takes about 30-60 seconds. At this time, the pressure difference returns to normal, the cleaning process ends, and filtration resumes. During cleaning, the system continues to flow.
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International Trade Department:+8613210553256
Address: Room 1512-1, Building 7, Rongsheng Times International Plaza, No. 9 Beiyuan Street, Licheng District, Jinan City, Shandong Province
