Optimized design method of membrane bioreactor system

A membrane bioreactor, a technology of optimized design, applied in chemical instruments and methods, sustainable biological treatment, biological water/sewage treatment, etc., can solve the problem that the results are easy to be theoretical, lack engineering data verification, and fail to meet engineering specifications and other problems, to achieve good economic benefits, save investment, and reduce operating costs.

Active Publication Date: 2011-06-22
中建中环新能源有限公司
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AI Technical Summary

Problems solved by technology

However, there is no effective way to directly apply the ASM1 model to the MBR process design stage, and the disadvantage of applying the ASM1 model to the MBR process design directly is the lack of a large amount of engineering data for verification, and the results tend to be theoretical and cannot meet engineering specifications. requirements

Method used

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  • Optimized design method of membrane bioreactor system
  • Optimized design method of membrane bioreactor system
  • Optimized design method of membrane bioreactor system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] To treat water Q = 2000m 3 / d MBR reactor optimization design process as an example.

[0030] Step 1, measuring the water quality parameters of the influent, and calculating the volume of the membrane bioreactor and the gas supply of the aeration tank according to the empirical formula and empirical parameters;

[0031] See Table 1 for influent water quality and effluent standards (GB18918-2002 Class A standard);

[0032] Table 1 Influent water quality and effluent standard of MBR reactor

[0033] project

Influent water quality (mg / L)

Effluent standard (mg / L)

BOD 5

200

10

COD Cr

400

50

SS

250

10

NH 3 -N

35

5

TN

45

15

[0034] Compared with the effluent standard value, the smaller the effluent water quality parameter is, the better the effluent water quality is, but it is not conducive to the optimization of the membrane bioreactor system. Therefore, the e...

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Abstract

The invention provides an optimized design method of a membrane bioreactor system. The method is characterized by comprising the following steps: measuring the water quality parameter of the inlet water, and calculating the volume of a membrane bioreactor and the air supply quantity of an aeration tank according to the experience formula and the experience parameter; utilizing a simulation software containing an ASM1 model to establish a membrane bioreactor technological model in a computer for dynamic analogue, and judging whether the water quality of the outlet water conforms to the design requirement; if the water quality condition of the outlet water is over good or does not reach standard, adjusting the volume of the membrane bioreactor and the aeration quality, and then obtaining the smallest volume of the membrane bioreactor and the air supply quantity of the aeration tank. The invention integrates the traditional experience design method and the mathematic analogue simulation technique, overcomes the defect of apt preservation of the pure experience design method, and also avoids the defect that the result is apt to theory by directly applying the ASM1 model for sewage treatment technology design so as not to conform to the engineering specification requirement.

Description

technical field [0001] The invention relates to an optimal design method of a sewage treatment system, in particular to an optimal design method of a membrane bioreactor system. Background technique [0002] Membrane Bioreactor (MBR for short) is a biochemical reaction system that integrates high-efficiency membrane separation technology and biodegradation of bioreactors. It uses membrane modules to replace the sedimentation tank in the traditional activated sludge process to separate mud and water, thereby treating wastewater. It has the characteristics of high solid-liquid separation rate, good effluent quality, high treatment efficiency, small footprint, and simple operation and management. With the development of membrane technology and the improvement of people's awareness of water conservation, MBR has been applied in the treatment and reuse of wastewater in various industries due to its unique advantages. [0003] In the process of sewage treatment, the effective vol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/12C02F3/10G06F17/50
CPCY02A20/152Y02W10/10
Inventor 陈飞沈良富孙石磊
Owner 中建中环新能源有限公司
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