Fast culture process in anaerobic grain sludge
An anaerobic granular sludge and culture method technology, applied in the field of rapid cultivation of anaerobic granular sludge, can solve the problems of fast substrate degradation, low reaction rate, slow cell proliferation, etc., achieve shortened start-up time, increase production Effect of methane activity and accelerated accumulation
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Embodiment approach 1
[0027] Inoculation sludge Use urban sewage treatment plant to digest sludge.
[0028] Dosing of polyquaternium salts Polyquaternium salts are used as sludge granulation accelerators, and polyquaternium salts are added to the reactor once every two days after the anaerobic reactor is started. The dosage of polyquaternium is estimated by the amount of sludge inoculum, and the mass ratio of the two is: polyquaternium / sludge amount=1.6mg / g.
[0029] The medium uses carbohydrate waste water as the medium.
[0030] Control the organic loading rate. The initial OLR adopts 0.5gCOD / (L·d), and the time interval for increasing the OLR is determined on the premise that the COD removal rate is 85%, so that the OLR can be increased rapidly.
[0031] Stirring method and intensity Pneumatic intermittent stirring is adopted, the stirring frequency is 5min / interval 1h, and the stirring intensity is the square root of the velocity gradient, and the G value is 85s -1 .
[0032] Reactor configu...
Embodiment approach 2
[0035] Inoculation sludge Use urban sewage treatment plant to digest sludge.
[0036] Dosing of polyquaternium salts Polyquaternium salts are used as sludge granulation accelerators, and polyquaternium salts are added to the reactor once every two days after the anaerobic reactor is started. The dosage of polyquaternium salt is estimated by the amount of sludge inoculum, and the mass ratio of the two is: polyquaternium salt / sludge amount=3.2mg / g.
[0037] Medium: Carbohydrate wastewater is used as the medium.
[0038] Control the organic loading rate. The initial OLR adopts 0.5gCOD / (L·d), and the time interval for increasing the OLR is determined on the premise that the COD removal rate is 85%, so that the OLR can be increased rapidly.
[0039] Stirring method and intensity The mechanical stirring method is adopted, and the stirring intensity is the square root of the velocity gradient, and the G value is 85s -1 .
[0040] Reactor Configuration The reactor height and diamet...
Embodiment approach 3
[0043] Inoculation sludge Use urban sewage treatment plant to digest sludge.
[0044] Dosing of polyquaternium salts Polyquaternium salts are used as sludge granulation accelerators, and polyquaternium salts are added to the reactor once every two days after the anaerobic reactor is started. The dosage of polyquaternium salt is estimated by the amount of sludge inoculum, and the mass ratio of the two is: polyquaternium salt / sludge amount=2mg / g.
[0045] Medium Carbohydrate wastewater was used as the medium.
[0046] Control the organic loading rate. The initial OLR adopts 0.5gCOD / (L·d), and the time interval for increasing the OLR is determined on the premise that the COD removal rate is 85%, so that the OLR can be increased rapidly.
[0047] Stirring method and intensity The hydraulic stirring method is adopted, and the stirring intensity is the square root of the velocity gradient, and the G value is 85s. -1 .
[0048] Reactor configuration Reactor height and diameter rat...
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