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Introduction to Anaerobic Tower Operation and Management
Release time:
2022-12-12 13:38
Anaerobic tower Operational management introduction: When the concentration of treated wastewater is high (CODCr value greater than 5000mg/L), a reflux operation method must be adopted. The reflux ratio is determined according to the specific situation. Effective reflux can not only reduce the influent concentration, but also increase the influent volume, ensuring uniform water flow distribution in the treatment facility and avoiding short water flow.
The temperature of general industrial wastewater is difficult to reach 35℃, and heating is required (especially in winter). Therefore, in order to save energy required for heating, on the one hand, attention should be paid to heat preservation (including increasing the reflux flow rate, etc.), and on the other hand, heat loss of the reactor should be prevented as much as possible. The characteristics of sludge concentration in the reactor must be fully utilized to increase the sludge concentration in the reactor as much as possible and reduce the impact of temperature on the anaerobic reaction.
Biogas should be discharged promptly and effectively. The anaerobic digestion process must be accompanied by the production of biogas, which can stir the sludge and promote the mixing and contact of wastewater and sludge, which is its advantage.
Sludge load should be appropriate. In order to maintain the balance of the three stages of anaerobic digestion, balance the production and consumption of volatile fatty acids and other intermediate products, and prevent the pH value from decreasing due to acid accumulation.
When the concentration of suspended solids in the treated wastewater is high (generally more than 1000mg/L), the wastewater should be subjected to appropriate pretreatment such as sedimentation, filtration or flotation to reduce the influent suspended solids content and prevent clogging of the packing layer.
Fully create an anaerobic environment. Anaerobic bacteria are a prerequisite for the normal activity of anaerobic microorganisms, and methanogens can only operate efficiently in an absolutely anaerobic environment. When wastewater is lifted into the anaerobic digestion device, the effluent reflux and other links should avoid contact with air as much as possible, and minimize the chance of contact with air. For example, in the water flow process, falling water or stirring should be avoided as much as possible. The regulating tank and reflux tank should be covered and closed. Do not use airlift pumps to lift wastewater. The anaerobic reaction structure should pass the airtightness test to ensure airtightness and no leakage.
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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