Combined anoxic/aerobic enhanced biological activated carbon dynamic membrane nitrogen and phosphorus removal process
A technology for biological enhancement, nitrogen and phosphorus removal, applied in aerobic and anaerobic process treatment, chemical instruments and methods, water/sewage multi-stage treatment, etc. Deal with the problems of popularization and application, difficult control of membrane fouling, etc., to achieve the effect of increasing microbial biomass and microbial activity, reducing energy consumption and operating costs, and reducing volume
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[0030] The physical and chemical properties of activated carbon powder used in the implementation process are shown in Table 1. The inoculated sludge (MLSS is 5000mg / L) and the raw sewage used in the experiment (see Table 2 for water quality) were all taken from a municipal sewage treatment plant in Shanghai.
[0031] Table 1 Physical indicators of powdered activated carbon
[0032] iodine value
>900mg / g
Adsorption value of methylene blue
≥120mg / g
specific surface area
>1000m 2 / g
≤8%
[0033] iodine value
>900mg / g
Adsorption value of methylene blue
≥120mg / g
PH value
5-7
Diameter (micron)
40-80
[0034] Table 2 Raw water quality
[0035] COD Cr (mg / L)
160-380
NH 4 -N (mg / L)
22-34
TN (mg / L)
23-40
SS(mg / L)
44-392
TP (mg / L)
1.9-3.6
pH
6.5-7.5
[0036] (1) Bioenhanced activated carbon cultivation
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