JB/T 12579-2015 in English
VALIDMufti-function high-efficient aerator
- Issued on:2015-10-10
- Implemented on:2016-03-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$282.00
本标准规定了多功能高效曝气装置的术语和定义、命名及规格、技术要求、试验方法和检验规则、产品标识、包装、运输和贮存。本标准适用于好氧生化水处理工艺中电机减速机驱动的多功能高效曝气装置。
Introduction
Standard Overview and Technical Evolution
JB/T 12579-2015 is the first special standard for Multifunctional and High-efficiency Aeration Device issued in my country, which specifies the application requirements of motor-driven aeration equipment in aerobic biochemical sewage treatment. This standard fills the gap in the technical specifications of high-efficiency aeration equipment in the machinery industry and reflects the latest development of energy-saving technology in sewage treatment after 2010.
Comparison of core performance indicators
| Energy efficiency grade | Theoretical power efficiency (kgO₂/(kW·h)) | Energy efficiency ratio (kgO₂/(kW·h)) |
|---|---|---|
| Level 1 | >3.8 | >3.0 |
| Level 2 | 3.4-3.8 | 2.7-3.0 |
| Level 3 | 3.0-3.4 | 2.4-2.7 |
Key technical innovations
Two-phase mixed aeration technology
The standard-defined multifunctional and efficient aeration device achieves water, gas and solid three-phase mixing and two-phase aeration through a special impeller design, and its theoretical power efficiency is improved by more than 40% compared with traditional equipment. The application case of a municipal sewage treatment plant shows that the GPQ325-55-B model equipment saves 120,000 kWh of electricity per year.
Dynamic energy efficiency evaluation system
The first energy efficiency ratio indicator (oxygenation volume/total power consumption) was created, shifting from a single performance evaluation to a full life cycle cost evaluation. The test method uses the nonlinear least squares method to calculate the total oxygen transfer coefficient KLa, and the accuracy is 15% higher than the traditional linear regression method.
Implementation suggestions
- Model matching: Select the impeller diameter according to the effective water depth of 4.5-6.5m. When the pH value of the medium is greater than 8.5, a stainless steel impeller must be used.
- Energy efficiency verification: The factory inspection must include a 1-2 hour no-load running test, and the three-phase current difference must be less than 8%.
- Maintenance points: Gear lubricating oil should be selected according to GB 7631.7, and bearing grease should comply with GB/T 7324.
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