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What are the functions and working principles of an anaerobic tower?
Release time:
2022-12-12 13:38
Anaerobic Tower The full name is the integrated circuit anaerobic reactor, which consists of a sludge reaction zone and a gas-liquid-solid three-phase separator, including a sedimentation zone and a gas chamber. A large amount of anaerobic sludge remains in the bottom reaction zone, the sludge settles well, and can form a sludge layer at the bottom with sludge having flocculation properties. The anaerobic tower body is a cylindrical tower body made of fiberglass reinforced plastic, with a stepless connection flange.
Anaerobic Tower The appearance is clean and beautiful, and the internal three-phase separator, watershed, upstream and downstream pipelines, etc., are clearly visible. The external insulation layer ensures that the system can operate automatically at an appropriate temperature. Anaerobic towers are widely used in factories, garbage stations, sewage treatment plants, and other odorous places. They are characterized by high purification efficiency, low energy consumption, and wide applicability. The functions and working principles of the anaerobic tower are introduced below:
1. Functions of the anaerobic tower:
Anaerobic biological treatment of wastewater is a key technology in environmental protection engineering and energy engineering. It is a powerful method for treating organic wastewater. In the past, it was mainly used to treat sludge, organic waste, and some high-concentration organic wastewater from urban sewage treatment plants. This is a biological method of wastewater treatment.
2. Anaerobic Tower Working principle:
(1) After the production wastewater is adjusted for pH and temperature, it enters the mixing zone at the bottom of the reaction tank and is fully mixed with the internal circulating sludge mixture in the downcomer of the tap water. Then, it goes to the granular sludge expansion bed area for COD biochemical interpretation. The COD volume load here is very high, and most of the COD in the permeate is degraded here, producing a large amount of biogas.
(2) Biogas is collected by the separator. Because the expansion work performed on the liquid during the generation of biogas bubbles has a stripping effect, the mixture of biogas, sludge, and water rises along the biogas lift pipe to the enterprise separator at the top of the reactor, where the biogas is separated from the sludge and exported to the disposal system.
(3) The sludge mixture enters the mixing zone at the bottom of the reaction tank along the sludge downcomer, and after being fully mixed with the permeate, it enters the sludge expansion bed area, forming the so-called internal circulation. Depending on the COD load of the permeate and the reactor structure, the internal circulation flow rate can reach 0.5-5 times the influent volume. In addition to the internal circulation of part of the wastewater after treatment by the expansion bed, other wastewater enters the granular sludge bed area of the fine treatment area through the three-way separator for residual COD degradation and biogas production, improving and ensuring the effluent water quality. Because most of the COD has been degraded, the COD load in the fine treatment area is low, and the output is small. The biogas produced here is collected by a two-stage three-phase separator, then enters the gas-liquid separator through the gas collector, and is output to the treatment system. After the wastewater is treated in the fine treatment area, it is treated by a secondary three-phase separator and discharged through the effluent area, and the granular sludge returns to the sludge bed in the fine treatment area.
(4) ECAR makes full use of anaerobic granular sludge technology, providing sufficient upward flow velocity for the reactor through external circulation, maintaining the expansion of the granular sludge bed and the mixing inside the reactor, and improving the treatment efficiency of the anaerobic tower.
Anaerobic tower
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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