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Do you know how to clean membrane-type microporous aerators?
Release time:
2022-12-12 13:39
1. Mechanical Cleaning. The recommended cleaning procedure for biological deposits is physical removal of the product. This can be done using a soft brush or a high-pressure water jet cleaner. The distance between the diaphragm and the nozzle should be kept at approximately 50 cm to avoid damaging the diaphragm with excessive water flow.
When carrying out phosphorus precipitation, do not chemically treat the diaphragm material with pure aluminum sulfate and pure ferric sulfate. Use a high-pressure water jet cleaner to flush away the separable high-viscosity precipitate.
2. Chemical Cleaning. A common method for chemically cleaning calcium carbonate scale is formic acid treatment. Using this process, the aeration tank may not need to be drained. Depending on the degree of deposition on the surface of the microporous aerator membrane, concentrated formic acid (85%, by volume) should be added twice a year, then a commercial-grade metering pump is placed in the airflow. Increase the air flow rate of each microporous aerator and add approximately 100cm3/3.4fl.oz. (fluid ounces) of formic acid to each microporous aerator within one hour. To subsequently remove the formic acid from the system, flush for at least 2 hours at a constant air flow rate.
The dosage ratio depends on the degree of precipitation, the composition of the wastewater, and the operating conditions, etc. The dosage needs to be determined through various appropriate methods. Pipes, valves, and fittings are acid-resistant.
The use of chemical reagents and additives is prohibited; using chemical reagents and additives will void the warranty. 1) Follow the high-pressure cleaner manufacturer's guidelines. 2) Formic acid is dangerous and can cause serious injury or death. Specialized equipment and professional personnel training are required. Follow all guidelines when using formic acid.
Microporous aerator
Practical application of IC tower in food processing wastewater treatment
Wastewater from the food processing industry contains a large amount of organic matter, suspended solids, and oils. Traditional treatment methods often face problems such as high energy consumption and long processing cycles. The IC tower (internal circulation anaerobic reactor), with its unique internal circulation structure and three-phase separation system, demonstrates technical adaptability in treating high-concentration organic wastewater. The core advantage of the IC tower lies in its internal circulation mechanism. Through the fluid movement of the internal rising and falling pipes, it achieves thorough mixing of sludge and wastewater, improving biodegradation efficiency. In food wastewater treatment, the IC tower can adapt to influent conditions with a wide range of COD concentrations, especially suitable for the dairy, meat processing, and brewing industries. Practice has shown that when treating oily wastewater, the IC tower can stably achieve a COD removal rate that meets emission standards by reasonably controlling the hydraulic retention time and organic load. In an actual engineering case, a large seasoning production enterprise used the IC tower as a pretreatment unit. The influent COD concentration ranged from 8000-12000mg/L, and after treatment by the IC tower, it was reduced to below 1500mg/L, significantly reducing the burden on the subsequent aerobic treatment unit. The operating data shows that the biogas yield of the IC tower is stable and can be used for energy recovery, further reducing treatment costs.
The effectiveness of IC tower in treating high-concentration organic wastewater
The IC tower (internal circulation anaerobic reactor) is an important piece of equipment in modern wastewater treatment, demonstrating significant technical characteristics in treating high-concentration organic wastewater. Its unique internal circulation system enhances the contact efficiency between sludge and wastewater, making the organic matter degradation process more thorough and showing clear adaptability in treating industrial wastewater with a COD concentration exceeding 3000 mg/L. The treatment effect of this technology is mainly reflected in two dimensions: organic matter removal rate and biogas production. Actual operating data shows that in wastewater treatment for industries such as brewing and food processing, the IC tower usually maintains a high COD removal rate. The granular sludge formed inside the reactor has good settling performance, ensuring the stability of system operation. When the temperature is controlled around 35℃, the microbial activity reaches an optimal state, and the treatment effect is relatively ideal. In the process of treating high-concentration organic wastewater, the volumetric loading capacity of the IC tower is a key indicator that distinguishes it from traditional anaerobic processes. Due to its multi-stage reaction zone design and internal circulation flow pattern, the equipment can withstand high organic load shocks. Pharmaceutical wastewater treatment cases show that the system can still maintain stable operation when the influent COD fluctuates between 5000-8000 mg/L.
In the back-end process of semiconductor manufacturing, the IC handler (integrated circuit testing and sorting equipment) plays a core role in verifying chip functions and screening for quality. Its working principle is to use a precision robotic arm to send wafers or packaged chips to the testing station, and use the probe card and tester to complete the electrical parameter measurement. Then, according to the test results, it automatically sorts out qualified products and defective products. This integrated "test-judgment-sorting" process makes it a decisive link in the quality control before the chip leaves the factory. From a technical perspective, the gatekeeping role of the IC handler is reflected in three dimensions: First, the contact testing scheme can simulate the actual working state of the chip and detect physical defects such as open circuits, short circuits, and leakage; second, the multi-station parallel testing architecture achieves the screening capacity of thousands of chips per unit time, matching the production capacity needs of the packaging and testing factory; more importantly, its test data is directly related to the yield statistics of the chip, providing key evidence for process improvement. Current mainstream equipment supports environmental temperature testing from -40℃ to 150℃, covering the reliability verification needs of different application scenarios such as consumer electronics and automotive electronics. In industrial practice, the testing standards of IC handlers are often more stringent than the terminal application conditions. Taking the case of a major packaging and testing factory as an example
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