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Microporous aerator
Release time:
2022-12-12 13:39
Aerators are an important process in the aerobic biological treatment system of wastewater, and the blower aeration system is widely used. There are various types of aerators, which can be divided into disc and tube aerators according to their structure. So commonly used Microporous aerator Compared with perforated aeration pipes, what are the advantages and disadvantages?
Microporous aeration systems generally use diaphragm-type microporous aerators as aeration equipment, and the pool filler generally uses elastic filler, and the design gas-water ratio is generally around 0.7. The perforated aeration system uses perforated pipes as aeration equipment, and the pool filler can use granular filler or elastic filler, and the design gas-water ratio is generally around 1.
Microporous aerator The key to the operation of aeration equipment lies in the selection of microporous aerators. The aerator support plate mostly uses ABS engineering plastics, and the rubber diaphragm tube uses ethylene propylene rubber, which has the characteristics of heat resistance, ozone resistance, acid and alkali resistance, and good chemical stability. Compared with ordinary rubber membranes, it can greatly improve its service life. The air holes on the air distribution diaphragm can be enlarged or reduced with the increase or decrease of the air volume, so that the oxygen entering the inlet aeration pipe is more uniform, and it also prevents blockage. Because the air distribution diaphragm has a certain elasticity, when the aerator is oxygenated and aerated, the air distribution diaphragm and the micropores on the diaphragm can automatically swell and open under the action of the gas to ensure that the gas can pass through the micropores, and when the aeration is stopped, the micropores on the air distribution diaphragm are in a closed state. Due to the elasticity of the air distribution diaphragm and the ability of the micropores to automatically expand and contract, the phenomenon that the micropores of the previous aerator are easily blocked is avoided.
The perforated aerator aerates directly on the air pipeline, so there is no membrane damage problem in the above-mentioned microporous aeration system. The thin-walled, straight-through design greatly reduces the aeration resistance loss; the variable holes and slits automatically open and close, completely solving the problem of aerator blockage; the soft tube is linear aeration, making the air distribution uniform, and forming a vertical circulation, making the mixing more uniform; the aerator soft tube has small bubbles, high oxygen utilization rate and power efficiency. Different design modes of the aerator aeration pipe can be used to adjust the working pressure, and different distances and densities can change the working efficiency of the aerator.
Microporous aerator
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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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