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What are the function and application principle of an anaerobic tower?
Release time:
2022-12-12 13:38
What are the function and application principle of an anaerobic tower?
Anaerobic towers are commonly used equipment in wastewater treatment, which can appropriately reduce Anaerobic tower the thickness of the filler layer in the biofilter, leaving a certain space between the bottom of the pool and the filler. When wastewater passes through the suspended sludge layer and the filler layer in sequence, the organic matter contacts and degrades with the particles of the sludge layer and the microorganisms on the filler membrane, forming an anaerobic tower treatment process. So, let's take a look at the function and application principle of the anaerobic tower.
1. Functions of the anaerobic tower:
Wastewater biotreatment is a key technology in environmental engineering and energy engineering, and is one of the effective means to solve organic wastewater. It has been used to treat sludge, organic waste, and some high-concentration organic wastewater in municipal wastewater treatment plants. This is a biological method to solve wastewater.
2. Anaerobic tower Application principle:
(1) Industrial wastewater with consistent PH and temperature first enters the mixing zone at the lower end of the reactor, and after being fully mixed with the circulating sludge mixture in the downcomer of the tap water, it enters the granular sludge expansion zone for ammonia nitrogen biochemical interpretation. Here, the ammonia nitrogen volume load is high, and most of it enters the anaerobic tower and dissolves here, producing a large amount of biogas liquid.
(2) The biogas liquid is collected by three separation devices. The liquid expansion during the foaming process of the digested liquid produces a stripping effect, so it is correct that the mixture of digested liquid, sludge, and water rises along the digested liquid lift pipe to the top of the reactor's enterprise separation equipment, where the digested liquid is separated from the sludge and output to the solution system.
(3) The sludge mixture enters the transition zone at the lower end of the anaerobic tower along the sludge downcomer, and after being fully mixed with the influent, it enters the sludge expansion zone, where internal circulation occurs. According to different influent ammonia nitrogen loads and different reactor structures, the total internal circulation flow rate can reach 0.5-5 times the influent flow rate. In addition to part of the expanded wastewater participating in the internal circulation, the remaining wastewater will be dissolved by the remaining ammonia nitrogen, and produced by the granular sludge bed zone digested liquid, entering the refined solution zone according to the three-stage separation equipment, to improve and ensure the effluent water quality. Because most of the ammonia nitrogen has been dissolved, the purification zone ammonia nitrogen load is low, and the output is also low. The biogas liquid produced here is collected by two-stage three-phase separators, enters the gas-liquid separator through the gas collection pipe, and is output to the solution system. After the refined wastewater is effectively treated by the secondary three-phase separator, the supernatant is discharged from the watershed, and the granular sludge returns to the refined sludge bed.
The above is the explanation of "What are the function and application principle of an anaerobic tower?" by the editor. Do you all understand? If you want to learn more, please contact our manufacturer. I hope the above explanation can help you. Thank you for watching, and see you next time.
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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.
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