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Abstract Due to the poor pretreatment effect of aquaculture sewage in the previous past, a large number of large particles remain in the sewage, thus affecting the final effect of sewage treatment. Therefore, the aquaculture sewage treatment method of carbon nanotube composite film was designed. According to the actual situation of aquaculture sewage, through the calculation of large particles in aquaculture sewage, using chemical softener to soften sewage treatment, reduce the hardness of sewage, sewage pickling, remove the bacteria in sewage, according to the characteristics of carbon nanotube composite membrane, the preparation, using the preparation of carbon nanotube composite membrane aquaculture sewage filter, and then further treatment of filtered sewage, thus design the corresponding aquaculture sewage treatment scheme. Through the above design, the design of the aquaculture sewage treatment method is completed. The experimental results show that compared with the traditional aquaculture sewage treatment method, the total cost of the designed carbon nanotube composite membrane technology in practical application is only 491,600 yuan, which is much lower than the other 1,035,400 yuan and 1,405,700 yuan of the two methods. In addition, the ammonia nitrogen content in the sewage treated by this technology is as low as 4.8 mg/L, showing a better sewage treatment effect.
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