CJ/T 263-2018 in English
VALIDCorundum fine bubble diffuser for water and wastewater treatment
- Issued on:2018-04-03
- Implemented on:2018-11-01
- File Format:PDF
- Delivery:Via email within 5 business days
$301.00
本标准规定了圆板形、钟罩形、管形、球冠形和球形刚玉微孔曝气器的术语和定义、分类和型号、工作条件、要求、试验方法、检验规则、标志、包装、运输和贮存。
本标准适用于水处理用刚玉微孔曝气器的制造和检验。
Introduction
Standard Evolution and Technology Upgrade
| Comparison Dimensions | 2007 Edition | 2018 Edition | Upgrade Highlights |
|---|---|---|---|
| Product Type | 3 Basic Types | 5 Structural Types | Added Spherical Crown and Spherical Aerators |
| Performance Indicators | 8 Core Parameters | 12 Extended Parameters | Added Check Valve Performance Requirements |
| Test Methods | 6 national standards cited | 18 national standards cited | New material corrosion resistance test |
Analysis of key technical requirements
1. Corundum material properties
Corundum microporous body must meet the following requirements: Al₂O₃ content ≥75%, porosity ≥40%, compressive strength ≥40MPa. Acid corrosion weight loss rate is controlled at 1-2%, and alkali corrosion ≤5%.
2. Oxygenation performance classification
| Type | Standard ventilation volume (m³/h) | SOTE(%) | Resistance loss (Pa) |
|---|---|---|---|
| Disc type (Φ178-240mm) | 2-5 | 30-35 | ≤4000 |
| Tubular type (Φ60-70mm) | 2-10 | 26-37 | ≤4500 |
Key points of engineering application
Installation specifications
- Horizontal error of air distribution branch pipe ≤10mm
- Flatness deviation of aerator chassis＜1mm
- Pipeline emptying device must be installed
Maintenance suggestions
It is recommended to use formic acid flushing or intermittent large volume flushing every quarter to keep the pores unobstructed. Chemical cleaning should be carried out when the resistance loss exceeds 150% of the standard value.
Impact of standard implementation
After the implementation of the new standard, the energy consumption of the aeration system can be reduced by 15-20%. Taking a 100,000 tons/day treatment plant as an example, the annual electricity saving can reach 450,000 kWh, corresponding to a CO₂ emission reduction of about 400 tons.
Loading PDF document...
Error loading PDF. Please make sure the file is valid and try again.
We also recommend
-
CJ/T 508-2016 in English
Belt-filter press for sludge dewatering
2016-12-15 -
CJ/T 294-2018 in English
Rotating disc aerator
2018-03-20 -
CJ/T 522-2018 in English
Traveling—bridge suction degritter for grit chamber in sewage treatment plant
2018-03-20 -
CJ/T 509-2016 in English
Trash interception bar screen
2016-12-06 -
CJ/T 511-2017 in English
Cast iron manhole cover
2017-03-20
