Wastewater treating apparatus
A sewage treatment device and water treatment technology, applied in the direction of biological water/sewage treatment, water/sludge/sewage treatment, aerobic process treatment, etc., can solve the problems of increasing treatment costs, large-scale treatment equipment, etc., and achieve low cost Effect
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[0070] As described in specific examples, in figure 1 and figure 2 In the device, the anaerobic tank 4 is used to perform treatment, and the organic compound with a high volume load can be converted into an organic acid. For example, for starch manufacturing process series wastewater, the volume load at BOD is 7.8kg / m 3 · At time d, when the anaerobic tank 4 was used for 5.3 hours, the BOD value decreased to 1340 mg / L. At this point, volatile fatty acids (VFA) reached a level of 857 mg / L, with 46.4% acetic acid, 27.7% propionic acid, 16.0% butyric acid, and 9.9% valerenic acid. Therefore, the aerobic treatment in the post-stage aeration tank 5 is performed very easily and stably.
[0071] so, in figure 1 and figure 2 In the device, it is possible to process organic compounds with high volume load. As a volume load, for example, the anaerobic tank 4 can reach 5-20kg / m 3 d. The aeration tank 5 is 2~8kg / m 3 d. The filter tank 7 is 0.5~1.5kg / m 3 d, and in the previous st...
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