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Optimizing and designing method of AAO process aeration amount

A technology for optimizing design and aeration rate, applied in chemical instruments and methods, aerobic and anaerobic process treatment, calculation, etc., which can solve problems such as lack of engineering data verification, failure to meet engineering specifications, and results that are prone to theoreticalization. , to achieve the effect of reducing operating costs

Active Publication Date: 2010-06-23
中建中环新能源有限公司
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Problems solved by technology

However, the disadvantage of using the ASM2d model to directly design the aeration rate of the AAO process is that there is a lack of a large amount of engineering data for verification, and the results tend to be theoretical and cannot meet the requirements of engineering specifications
At present, there is no relevant report on the direct application of the ASM2d model to the design of the aeration rate of the AAO process

Method used

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  • Optimizing and designing method of AAO process aeration amount
  • Optimizing and designing method of AAO process aeration amount
  • Optimizing and designing method of AAO process aeration amount

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Embodiment 1

[0034] To treat water Q = 30000m 3 / d's urban sewage treatment AAO process design as an example, using GPS-X simulation software to design the aeration rate of its aerobic tank. The design requirements meet the first-class B standard in GB18918-2002 for COD Cr , NH 3 - The control requirements of three main parameters such as N and TP (design water temperature 20°C), namely: COD Cr 3 - N<8 mg / L, TP<1.5 mg / L.

[0035] 1. Determination of 13 water quality parameters of AAO process influent.

[0036] The 13 water quality parameters measured according to the national standard method are: COD Cr 440mg / L, soluble COD Cr 154mg / L, BOD 5 208mg / L, soluble BOD 5 66mg / L, TSS 217mg / L, VSS 130mg / L, TKN 40mg / L, soluble TKN 32mg / L, TN 40mg / L, NH 3 -N is 28.8mg / L, TP is 12mg / L, PO 4 -P is 10.5mg / L, ALK is 380mg / L (as CaCO 3 count).

[0037]2. Design the main parameters of the AAO process (except the aeration rate) according to the methods and formulas stipulated in the "Code for Des...

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Abstract

The invention belongs to the technical field of environmental protection, in particular to an optimizing and designing method of the AAO process aeration amount, which comprises the following steps of: firstly, analyzing components of water quality of sewage; secondly, designing other process parameters except for the aeration amount in the AAO process by adopting an empirical method; thirdly, establishing an AAO process model by using simulation software; fourthly, setting main parameters of the AAO process model according to the results of the first step and the second step; fifthly, adjusting the distribution of the aeration amount along the length direction of an aeration pool; and sixthly, calculating the aeration amount in the stable state so as to meet designing conditions. The method can be used for designing the AAO process aeration amount, can effectively save the energy consumption for aeration by over 12 percent and reduce the operation cost of the system.

Description

technical field [0001] The invention relates to a method for designing the aeration rate of a sewage treatment process, in particular to an optimal design method for the aeration rate of an AAO process. Background technique [0002] The reaction tank of AAO process and its improved process has anaerobic, anoxic and aerobic environments, which can realize simultaneous biological denitrification and phosphorus removal. One of the key technologies. In the AAO process, the energy consumption of the aeration system is one of the key design parameters that affect the sewage treatment effect and operating cost. If the design aeration rate is too low, the treatment efficiency will be reduced, and if the design aeration rate is too high, the operating cost will be increased. In the 07th issue of the scientific and technological journal "Chinese and Foreign Architecture" in 2007 entitled "Discussion on the Calculation Method of Aeration Volume of Activated Sludge Process" and "China ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14G06F17/50C02F3/30
CPCY02A20/152
Inventor 孙石磊沈良富范玺陈飞
Owner 中建中环新能源有限公司
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