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A Method for Optimal Operation of Isothermal Layer Aerator

A technology for optimizing operation and aerators, applied in chemical instruments and methods, water aeration, sustainable biological treatment, etc., can solve the problems of poor operation effect of isothermal layer aerators and lack of optimized operation methods.

Active Publication Date: 2016-08-24
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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Problems solved by technology

[0005] The object of the present invention is to provide a method for optimizing the operation of the isothermal layer aerator to solve the problems of the poor operation effect of the above-mentioned isothermal layer aerator and the lack of optimal operation methods

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  • A Method for Optimal Operation of Isothermal Layer Aerator
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  • A Method for Optimal Operation of Isothermal Layer Aerator

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Embodiment Construction

[0097]The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0098] see figure 1 , a kind of isothermal layer aerator optimization operation method of the present invention, specifically comprises the following contents:

[0099] Establishment and Solution of Oxygenation Kinetic Model

[0100] In the aeration chamber, there are two main oxygen mass transfer processes in the water: one is the bubble-water interface oxygen mass transfer during the bubble rising process, and the other is the air-water interface oxygen mass transfer in the residual air accumulated at the top of the aeration chamber . Since the oxygen mass transfer efficiency of the air-water interface at the top of the aeration chamber is low, the present invention only considers the main oxygen mass transfer process of the air bubble-water interface, thus establishing an isothermal layer aeration and charging process based on the theory of oxygen mass tr...

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Abstract

The invention discloses an optimizing operation method for an isothermal layer aerator. The optimizing operation method comprises the following steps: firstly, according to a double-membrane oxygen mass transfer theory, establishing an aeration indoor oxygenation dynamic model and an integral solution method thereof, wherein gas volume fraction and water flow speed related in the aeration dynamic model are calculated by adopting an aeration room water dynamic model, an overall oxygen transfer rate KLa is calculated by adopting a formula associated with the gas volume fraction and gas bubble property; utilizing the aeration dynamic model to calculate vertical distribution of concentration of dissolved oxygen in the aeration door under different aeration conditions; establishing a representing method for the aeration room oxygen mass transfer rate; establishing an aeration efficiency representing method according to the oxygen mass transfer rate and the energy efficiency of the isothermal layer aerator; respectively drawing relationship curves of the oxygen mass transfer rate and the aeration efficiency under different aeration amount conditions according to the calculated dissolved oxygen concentration and represented water flow speed in an inlet and an outlet of the aeration room, wherein the aeration amount corresponding to the junction of the relationship curves is the optimal aeration amount of the isothermal layer aerator.

Description

technical field [0001] The invention belongs to the field of water quality pollution control of lakes and reservoirs, and in particular relates to an optimal operation method of an isothermal layer aerator, which is used for guiding the optimal operation of the isothermal layer aerator. Background technique [0002] Although isothermal layer aeration is an effective technology to solve the endogenous pollution of stratified lakes and reservoirs, various types of isothermal layer aeration equipment have also come out one after another; Practical applications in pollution control have not been very successful. The main reason for the disconnection between the theory and practice of isothermal layer aeration technology is that the isothermal layer aeration process is a complex gas-water two-phase flow movement and mass transfer process. In-situ lake water pollution control technology interdisciplinary with science, biology and other disciplines, while most of the early researc...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F7/00
CPCC02F7/00Y02W10/10
Inventor 孙昕朱丽鹏段飞飞刘凌伟
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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