Integrated sewage treatment and anaerobic ammonia oxidation strain retention system and method
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A technology for anaerobic ammonium oxidation and sewage treatment, applied in the field of integrated sewage treatment and anammox bacteria retention system, can solve the problems of low growth rate, simplify the process flow, maintain the abundance of bacteria, save Effect of anaerobic stirring time
Pending Publication Date: 2021-01-12
BEIJING DRAINAGE GRP CO LTD
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However, the growth time of anammox bacteria is as long as 11 days, and the growth rate is low
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Embodiment 1
[0058] This embodiment provides an integrated sewage treatment and anammox strain retention system, such as figure 1 , 2 As shown, the system includes a reactor tank body 1, water inlet subsystem 2, water outlet subsystem 3, aeration subsystem 4, biological filler area 5, short-range nitrification sludge 6 and online monitoring subsystem 7;
[0059] The water inlet subsystem 2 is arranged on the upper part of the reactor pool body 1, and the water inlet subsystem 2 includes the water inlet inner channel 2-1, the first water inlet weir 2-2, the water inlet outer channel 2- 3. The second water inlet weir 2-6, a plurality of water inlet vertical pipes 2-4 and a plurality of water distribution horns 2-5; In the middle of the outer canal 2-3;
[0060] The water outlet subsystem 3 includes an outlet weir 3-1 and an outlet channel 3-2; the outlet channel 3-2 is arranged between the outlet weir 3-1 and the second inlet weir 2-6, the A plurality of water inlet vertical pipes 2-4 are...
Embodiment 2
[0066] This example provides a method for integrated treatment of sewage and retention of anammox strains. The sewage to be treated in this example is the effluent from the primary sedimentation tank of Beijing Gaobeidian Recycled Water Plant. The water quality of the effluent from the primary sedimentation tank: COD 106.1-182.4mg / L, NH 4 + -N is 40.24-64.97mg / L, NO 2 - -N is 0.00-1.12mg / L, NO 3 - -N is 0.11-1.19mg / L; SS is 60-138mg / L; TP is 3.13-8.31mg / L; alkalinity is 247-405mg / L; pH is 7.02-7.58.
[0067] The method adopts the integrated sewage treatment and anammox strain retention system described in embodiment 1, comprising the steps of:
[0068] S1: Let the sewage flow into the water inlet channel 2-1, and flow to the bottom of the reactor pool body 1 through the multiple water distribution horns 2-5; control the rising flow rate to 1.0m / h.
[0069] S2: After the water inflow in step S1 is completed, use the aeration subsystem 4 to aerate the sewage, and use the o...
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Abstract
The invention belongs to the technical field of biological sewage treatment, and discloses an integrated sewage treatment and anaerobic ammonia oxidation strain retention system and method. The systemcomprises a reactor pool body, a water inlet subsystem, a water outlet subsystem, an aeration subsystem, a biological filler area, short-cut nitrification sludge and an online monitoring subsystem. The method comprises the following steps: S1, enabling sewage to flow into the bottom of a reactor pool body; S2, carrying out aeration treatment on the sewage by utilizing an aeration subsystem, and stopping aeration when the ammonia nitrogen concentration of the sewage in the reactor pool body is smaller than a threshold value; S3, performing gravity settling on the short-cut nitrification sludge, and when the sedimentation sludge level of the short-cut nitrification sludge is not changed, repeating the water inlet process in the step S1, and meanwhile, discharging water at the upper part ofthe reactor pool body out of the system through a water outlet subsystem; and S4, repeating the steps S1-S3 until the sewage reaches the discharge standard. According to the invention, anaerobic ammonium oxidation bacteria are intercepted in the system by using a water inlet mode of synchronous water inlet and outlet, so that the problem of strain loss is solved.
Description
technical field [0001] The invention belongs to the technical field of sewage biological treatment, and more specifically relates to an integrated sewage treatment and anammox strain retention system and method. Background technique [0002] Traditional sewage treatment plants have complex treatment processes and need to add a large amount of chemical reagents for chemical phosphorus removal and denitrification denitrification. Not only does it occupy a large area, but it also consumes a lot of chemicals and electricity, which does not meet the requirements of "green, low-carbon, recycling, sustainable Sustainable production and lifestyle” is the requirement for the development of ecological civilization. [0003] As a new type of autotrophic denitrification process, the anaerobic ammonium oxidation process can perform autotrophic denitrification without additional carbon source. However, the growth time of anammox bacteria was as long as 11 days, and the growth rate was lo...
Claims
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