Method for wall breaking and anaerobic drying treatment of remaining active sludge
A treatment method and excess sludge technology, applied in chemical instruments and methods, dehydration/drying/thickened sludge treatment, sludge treatment, etc., to achieve the effect of improving dehydration efficiency, improving dispersibility and activity, and promoting rapid dehydration
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Embodiment 1
[0028] The specific embodiment of the present invention will be described by taking the dewatered surplus sludge of a sewage treatment plant as an example. Add 0.04% TS sludge (TS is the total solid content of sludge) triclocarban, 0.2% TS sludge nonylphenol polyoxyethylene ether and 0.1% TS sludge aluminum chloride and 0.18% TS sludge imipenem, stirred for 1 hour, added 3.5% sludge volume 20mM EDTA and 5% sludge volume 36% to the treated sludge Sucrose solution, stir for 20 minutes, quickly add ice water 4 times the volume of sludge, and equilibrate for 20 minutes. Compared with the VSS of the raw sludge with the same moisture content, the VSS of the sludge after breaking the wall was reduced by 27.11%, and the SCOD increased by 34.28 times. After the wall is broken, the sludge is passed into the anaerobic fermentation tank, and anaerobic granular sludge of 1 / 8 of the remaining sludge volume is added for anaerobic digestion, and the anaerobic digestion temperature is control...
Embodiment 2
[0030] With the surplus sludge raw material of embodiment 1, selected treatment process is the same as embodiment 1, adds the triclocarban of 0.08%TS sludge, 0.7%TS sludge to 500kg this kind of dewatered surplus sludge with moisture content of 82.30% The nonylphenol polyoxyethylene ether of the sludge, the aluminum chloride of 0.5% of the TS sludge and the meropenem of 0.6% of the TS sludge were stirred for 1 hour, and 4% of the sludge volume 20mM EDTA and 36% sucrose solution with 7% sludge volume, stir well for 20 minutes, then quickly add ice water with 3 times the sludge volume, and equilibrate for 30 minutes. Compared with the VSS of the raw sludge with the same moisture content, the VSS of the sludge after breaking the wall was reduced by 29.47%, and the SCOD increased by 35.01 times. After the wall is broken, the sludge is passed into the anaerobic fermentation tank, and anaerobic granular sludge of 1 / 7 of the remaining sludge volume is added for anaerobic digestion. Th...
Embodiment 3
[0032] With the surplus sludge raw material of embodiment 1, selected treatment process is the same as embodiment 1, adds the triclocarban of 0.16%TS sludge, the triclocarban of 1.25%TS sludge to 500kg this kind of moisture content 82.30% dewatered surplus sludge The nonylphenol polyoxyethylene ether of mud, the aluminum chloride of 1% TS sludge and the panipenem of 1.25% TS sludge were stirred for 1 hour, and 4.5% of sludge volume 20mM was added to the treated sludge. EDTA and 36% sucrose solution with 8% sludge volume were stirred evenly for 20 minutes, then ice water 4 times the sludge volume was quickly added, and the equilibrium time was 30 minutes. Compared with the VSS of the raw sludge with the same moisture content, the VSS of the sludge after breaking the wall was reduced by 32.49%, and the SCOD increased by 37.24 times. After the wall is broken, the sludge is passed into the anaerobic fermentation tank, and anaerobic granular sludge of 1 / 6 of the remaining sludge vo...
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