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What are the operation and maintenance precautions for anaerobic towers and equipment?
Release time:
2022-12-12 13:38
The essence of anaerobic tower treatment is a technical measure that uses electricity consumption to improve wastewater quality. Therefore, low energy consumption Anaerobic tower It has been widely used in wastewater treatment and has been well developed. Anaerobic fluidized beds, composite anaerobic processes, etc., among which conventional digestion pool methods, anaerobic contact methods, etc. are anaerobic reactors, and biological anaerobic fluidized beds, etc. are second-generation anaerobic reactors.
With the development of anaerobic towers, EGSB is equivalent to UASB reactor anaerobic granular sludge in a flowing state. The IC reactor overlaps two UASB reactors up and down, using the methane produced by the sludge bed as power to achieve the circulation of the mixed liquid in the reactor. Let's learn about the operation and equipment maintenance precautions for anaerobic towers below:
I. Anaerobic Tower Operation Methods
1. After the pre-treated wastewater meets the influent conditions required for anaerobic tower treatment, start Anaerobic tower Pump into the UASB reactor. Before starting the anaerobic tower pump, check if the pump is normal. After starting the pump, check the flow meter display to determine if the wastewater discharge is normal. Adjust the pump outlet valve to adjust the flow rate of each anaerobic reactor within the specified range; before using the pump, carefully check the pump's operating record and confirm that it is normal before using the pump.
2. Pay attention to the sludge splashing phenomenon in the upper part of the anaerobic tower reactor. Do not carry too much sludge with the wastewater, usually less than 20%. The overflow weir should be cleaned regularly, but care should be taken to prevent falls and drowning.
3. COD, PH, VFA, temperature and other indicators of the effluent from the anaerobic tower reactor should be monitored to avoid excessive changes in the reactor process indicators.
4. Frequently patrol the water surface at the top of the reactor to prevent a large amount of gas from overflowing.
5. Regularly observe the water level in the water seal and control the water level in the water seal at a certain height.
6. If necessary, check once per shift and judge the reactor operation based on the test results.
II. Equipment Use and Maintenance Precautions
1. Regularly clean and paint the blocks, platforms, water seals, pumps and other equipment of the UASB reactor; please note that the inside of the running equipment cannot be cleaned.
2. Frequently clean the UASB outlet weir to prevent weir blockage; when cleaning the overflow weir, an overflow weir should be laid and a platform should be set up to prevent drowning.
3. During operation, the anaerobic water pump should be checked frequently, paying attention to changes in pump pressure and outlet flow to prevent pump burnout and idling.
4. Regularly check the changes in the flow meter count to prevent fluctuations in the inflow.
5. Always drain a small amount of water from the bottom of the water seal and add water according to the water seal requirements to prevent excessive water accumulation at the bottom of the water seal.
6. Frequently change the operation of the anaerobic pump, and promptly repair faulty equipment to ensure the normal operation of backup equipment.
7. Regularly lubricate and maintain valves and other equipment.
8. Frequently check instruments such as flow meters, PH meters, and thermometers to confirm the accuracy of the data.
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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