Gravity flow denitrification filter
A denitrification filter, gravity flow technology, applied in filtration treatment, anaerobic digestion treatment, chemical instruments and methods, etc., can solve problems such as poor backwashing effect
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[0030] Such as Figure 1-4 As shown, the gravity flow denitrification filter provided by this application is mainly suitable for the application of sewage after secondary biochemical treatment in sewage treatment plants, specifically including:
[0031] The filter body 1, the water distribution system above the filter body 1, the filter system below the filter body 1, and the drain pipe 10 at the bottom of the filter body 1 for discharging the treated water;
[0032] The water distribution system includes: a water distribution main pipe 2 and a water distribution branch pipe 3 extending downward on the water distribution main pipe 2; The sealed operating environment can better prevent the oxygen in the air from dissolving into the sewage, thereby destroying the anaerobic environment required for denitrification and denitrification; in actual operation, in order to avoid the occurrence of siphon and air pressure fluctuations, the Several vent holes 4 of φ10mm are opened on the...
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