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Do you understand the principle of an anaerobic tower?
Release time:
2022-12-12 13:39
In today's sales market, anaerobic tower There are many types. If you want to reasonably improve water problems or high-concentration wastewater, you still have to use anaerobic towers to solve these problems. Before choosing an anaerobic tower, everyone knows anaerobic tower the basic principles of how it works, and then consider whether to choose this product!
anaerobic tower Principle: Anaerobic towers are actually composed of anaerobic biofilters (AF) and upflow anaerobic sludge blanket reactors (UASB), so they are also called UBF reactors. The bottom of the anaerobic composite bed reactor is a sludge blanket, while the upper end is filled with filler. It can be seen as a moderate reduction in the thickness of the upflow anaerobic biofilter filling layer. Necessary space is created between the pool water distribution system software and the filling layer to promote the growth and accumulation of particulate sludge in a suspended state, thus forming the UASB process. When wastewater floats on the sludge layer and filling layer, organic compounds will come into contact with and decompose with microorganisms on the particulate sludge and filling biofilm in the sludge layer.
After adjusting the pH and temperature, the wastewater enters the mixing zone at the bottom of the reactor and is fully mixed with the sludge solution of the external circulation system, and then enters the granular sludge expansion bed area for COD biochemical dissolution. The COD capacity load here is very high, and most of the leaked COD is dissolved here, resulting in the production of a large amount of biogas. Because the surging work performed on the liquid during the entire process of biogas slurry producing bubbles has caused a gas-lifting effect, this has led to the rise of the biogas slurry, sludge, and water compounds. After dissolution in the filler area, the solution reaches the three phases at the top of the reactor separator, where the biogas slurry is separated from the mud and water and output to solve system software problems.
The mud and water compounds descend along the baffle to the mixing zone at the bottom of the reactor. After sufficient mixing of the permeate, it enters the sludge expansion bed area again, resulting in smooth internal circulation. Depending on the different leaked COD load and the structure of the reactor, the total reflux flow rate of the external circulation system reaches 0.5-10 times the inflow and outflow. In addition to the wastewater partially treated by the Pengzhuang bed, in addition to the wastewater partially participating in the circulation system, other wastewater is also recollected. anaerobic tower and wastewater enters the filling area to perform the entire process of COD dissolution and biogas production, thereby improving and ensuring the water volume. Since most of the COD has been dissolved, the COD load in the filling area is lower, and the generation and supply of gas are also smaller. The biogas slurry produced here is collected by the three-phase separator and the system software is solved according to the outlet of the manifold. After the wastewater dissolved in the filling area passes through the three-phase separator, the supernatant is discharged through the outlet area, and the particulate sludge returns to the sludge bed.
Anaerobic tower
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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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