Method for controlling nitrogen release in deep denitrification filter bed
A denitrification filter and release control technology, applied in anaerobic digestion treatment, etc., can solve the problems of increasing energy consumption, increasing backwash water consumption, shortening filtration cycle, etc., to reduce energy consumption, improve operating efficiency, and prolong filtration cycle effect
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[0021] The key control factors of the total head loss control nitrogen release process are: (a) the head loss on-line detection instrument (15) participates in the nitrogen release control; (b) the head loss on-line detection instrument 15 does not participate in the gas-water recoil control, by calculating SS and The accumulation of biological sludge is compared with the maximum accumulation load to control the air-water recoil.
[0022] Nitrogen release process:
[0023] The measured value of head loss online detection instrument 15 is greater than or equal to the set value, and the nitrogen release program is started
[0024] Close the water inlet valve 6 and the water outlet valve 12
[0025] Open the recoil water inlet valve 13 and start the recoil water pump 14
[0026] ·Water recoil for 30-90 seconds
[0027] Close the recoil water pump 14 and the recoil water inlet valve 13
[0028] Open the outlet valve 12
[0029] Open the water inlet valve 6
[0030] Air water...
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