Integrated treatment equipment for rural aquaculture sewage with high-concentration COD (Chemical Oxygen Demand) and ammonia nitrogen
A technology for aquaculture sewage and treatment equipment, which is applied in water/sewage treatment, biological water/sewage treatment, oxidized water/sewage treatment, etc. Low cost and improved efficiency
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[0025] Example 1
[0026] like figure 1 , figure 2 As shown in the figure, an integrated treatment equipment for rural high-concentration COD and ammonia nitrogen aquaculture sewage of the present invention includes a UASB reactor 1, an anoxic tank 2, an aerobic tank 3, an activated carbon filler tank 4, an MBR reaction tank 5 and a disinfection tank connected in sequence. Pool 6, a reaction zone 7 is provided inside the UASB reactor 1, a water storage zone 8 is provided outside the reaction zone 7, a sludge settling zone 71 is provided at the lower part of the reaction zone 7, and suspended sludge is provided above the sludge settling zone 71 Zone 72, a separation zone 73 is provided above the suspended sludge zone 72, a three-phase separator 731 is provided on the upper part of the separation zone 73, and overflow weirs 732 communicated with the water storage zone 8 are provided on both sides of the separation zone 73. The UASB reactor The lower part of 1 is provided with...
Example Embodiment
[0034] Example 2
[0035] The technological process of embodiment 1 is as follows:
[0036] According to the embodiment of Example 1, the specific implementation process of the present invention: the sewage first enters the UASB reactor 1. In the UASB reactor 1, about 60% of the COD is removed, and the macromolecular organic matter that is difficult to degrade is decomposed into simple molecular structures. , molecular structure with better biochemical properties, in UASB reactor 1, the residence time of sewage is about 16 hours, the generated methane (CH4) gas overflows through the three-phase separator 731, the generated sludge sinks, and the initial treatment The last sewage is discharged through the overflow weir 732 and enters the anoxic tank 2; the anoxic tank 2 is equipped with a first filler 12, and the first filler 12 provides a place for the growth of microorganisms. Biomass and sewage undergo partial COD removal and denitrification and denitrification in anoxic tan...
Example Embodiment
[0037] Example 3
[0038] In embodiment 2, the effect of aquaculture sewage treatment is as follows:
[0039] Sewage treatment plan:
[0040] The treated water volume is 20 tons / day, the influent water quality is shown in Table 1, and the effluent quality is shown in Table 2.
[0041] Table 1 Influent water quality indicators
[0042] Monitoring items
[0043] Table 2 Effluent water quality indicators
[0044] Test items
[0045] It can be seen from the data in Table 1 and Table 2 that the water quality of the treated water after treatment by the integrated treatment equipment for high-concentration COD and ammonia-nitrogen aquaculture sewage in the present invention conforms to one of GB18918-2002 "Pollutant Discharge Standards for Urban Sewage Treatment Plants". Grade A standard.
[0046] The invention is an integrated treatment equipment for rural high-concentration COD and ammonia nitrogen aquaculture sewage, which is designed for the water quality ...
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