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A comparison of the use of swirl aerators and microporous aerators in industrial parks
Release time:
2022-12-12 13:39
In Vortex aerator During the operation of the vortex aerator, gas enters from the bottom flange port and is ejected from two nozzles near the bell-shaped surface, creating a vortex effect that accelerates the vortex upwards along the bell-shaped wall. The very high speed gradually narrows towards the upper side of the bell, causing the air to gain greater acceleration and impact force. Due to the action of the gas, the mixed liquid circulates inside and outside the cylinder. During the gas-liquid ascent, it is repeatedly cut by the internal structure of the cylinder, forming a large number of ultrafine bubbles and fully mixing with the surrounding muddy mixture, increasing the mass transfer rate and oxygen utilization rate of oxygen; the fully mixed air and water rush upwards violently, and the strong circulating water flow causes some small bubbles and water flow to return to the bottom of the tank, while also allowing the bottom sludge to participate in the circulation, thus eliminating any dead zones in the oxygenation of the entire aeration tank. Maximum utilization of aeration tank volume.
Microporous aerators are commonly used microbubble aerators on the market and can be divided into disc aerators and tube aerators. Working principle: The micropores on the diaphragm are uniformly opened by laser. When air is supplied, air enters between the diaphragm and the support tube or support base, causing the diaphragm to bulge slightly, opening the pores, and the air escapes from the pores and reaches the air. Diffusion purpose. Air supply stops, pressure disappears. Under the elastic action of the diaphragm, the pores will automatically close, and under the action of water pressure, the diaphragm will be pressed tightly against the base, the mixture in the aeration tank will not backflow, and the pores will not be blocked.
Due to the different working principles and manufacturing materials of the two aerators, there are many differences in the performance of the two aerators.
Compared with microporous aerators, vortex aerators can complete the renovation project with water, the installation is very simple, and the maintenance and replacement are convenient;
In terms of dissolved oxygen, in the initial stage of the renovation project, the dissolved oxygen of the microporous aerator is higher, and the dissolved oxygen of the vortex aerator will gradually stabilize over time.
Swirling aerator
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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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