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The function of an anaerobic tower and how it works?

Release time:

2022-12-12 13:39

Anaerobic tower Also known as an anaerobic wastewater treatment tower in the industry, it is a common environmental protection equipment. So, Anaerobic tower what is its function and how does it work? Shandong Zhiyuan shares the following with you.
Generally, a water distributor is set at the bottom of the anaerobic tower, and a three-phase separator is set at the top of the anaerobic tower. A sludge bed is set under the anaerobic tower body. Wastewater enters the anaerobic tower from the water distributor at the bottom of the anaerobic tower. There are anaerobic fermentation microorganisms in the sludge bed. After the sewage enters the sludge bed, the organic compounds in the wastewater are converted into biogas by the anaerobic fermentation microorganisms, gas, dissolved sewage, and sludge in the sludge bed. Then they enter the three-phase separator. Under the effect of the three-phase separator, the sludge in the sludge bed sinks to the anaerobic tower, the biogas is discharged from the top of the three-phase separator, and the treated water is discharged from the side of the three-phase separator.
(1) Suitable pH value: To ensure the smooth progress of anaerobic fermentation, the pH value in the tubular reactor must be between 6.5 and 8.2.
(2) Sufficient basic nutrients: The nitrogen concentration in the tubular reactor must be within the range of 40-70 mg/L to meet the requirements, while phosphorus and sulfide can meet the requirements by maintaining lower concentrations. Methanogens have specific requirements for sulfide and phosphorus, and their water content must be ensured in the tubular reactor. Sometimes, phosphorus and potassium fertilizers and sulfates need to be added to the leaking sea.
(3) Essential trace elements: Trace elements that have an activation effect on methanogens include iron, cobalt, nickel, zinc, manganese, molybdenum, copper, and even selenium and boron. The lack of any one of them will seriously affect the entire microbial treatment process.
(4) Suitable temperature: Anaerobic fermentation reactions generally operate under mesophilic conditions of 30-37℃.
(5) Tolerance to toxicity: It is necessary to carry out training on the adaptability of anaerobic fermentation microorganisms to harmful substances.
(6) Sufficient metabolic time: It is necessary to ensure the hydraulic retention time (HRT) and solid retention time (SRT) of anaerobic fermentation microorganisms.
(7) Appropriate carbon source: The organic compounds from the influent should be considered as the carbon source required for the microbial production of heterotrophic methanogens, and the dissolved CO2 in the tubular reactor should be considered as the carbon source required for autotrophic methanogens.
The above is Shandong Zhiyuan Environmental Engineering Co., Ltd. for Anaerobic tower The content sharing of the function and working principle. Our company is a comprehensive company specializing in the design, EPC (equipment integration supply and EPC), construction, commissioning, technical consultation, and托管运营 of various industrial wastewater, waste gas, and high-concentration organic wastewater treatment projects. If you have any other questions, please feel free to contact us.

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.

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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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Why are IC towers considered the "quality gatekeepers" of semiconductor packaging and testing plants?

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