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Operating Instructions for Anaerobic Towers
Release time:
2022-12-12 13:39
Anaerobic tower Wastewater, after pH and temperature adjustment, first enters the mixing zone at the bottom of the reactor. After thorough mixing with the sludge and water mixture from the external circulation, it enters the granular sludge expansion bed zone for COD biodegradation. The load is high, and most of the influent COD is degraded here, producing a large amount of biogas. Due to the gas lift effect produced by the expansion of the liquid during biogas bubble formation, a mixture of biogas, sludge, and water rises. After degradation in the packing zone, the mixture reaches the three-phase separator at the top of the reactor. After being separated from the turbid water here, it is then output to the treatment system. The sludge and water mixture descends along the baffle to the mixing zone at the bottom of the reactor, mixes thoroughly with the water, and re-enters the sludge expansion bed zone, forming the so-called internal circulation. So when using Anaerobic tower what should you pay attention to?
1. Do not feed while discharging sludge. Maintain a relatively stable digestion temperature. Feed according to a relatively stable feeding amount and cycle, and continuously summarize to determine the optimal feeding amount and cycle. During startup or normal operation, ensure that the pH of the anaerobic pond influent is maintained between 6.8-7.8. Master the sludge discharge cycle and amount to prevent excessive sludge discharge from causing negative pressure. The sludge discharge amount is controlled by the sludge layer sampling port. 6. It must be kept unobstructed, maintaining the water seal level of the overflow pipe and the safe water seal of air and biogas. Especially in winter, it is best to check daily.
During the normal operation of the anaerobic reactor, a small amount of dead and metabolic anaerobic sludge will also be lost with the water. If the loss is significantly greater than the amount of sludge produced, it is called "sludge loss", which is often mentioned. Pay attention to this.
There are many reasons for sludge loss. Common factors include: sludge hollowness, poor settling, excessive rising speed, biogas pipe blockage, unreasonable design of the bottom water distributor, unreasonable design of the three-phase separator, insufficient sludge bed stirring, sludge poisoning and death, etc. When solving the problem of sludge loss, the cause of the problem must be analyzed first, and then corresponding measures should be taken.
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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