GB/T 38220-2019 English PDF (GBT38220-2019)

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GB/T 38220-2019: Technical requirements of assessment for high efficiency water pollutants control equipment -- Rotary aerator
GB/T 38220-2019
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 13.030.40
J 88
Technical requirements of assessment for high
efficiency water pollutants control equipment - Rotary
aerator
ISSUED ON: OCTOBER 18, 2019
IMPLEMENTED ON: MAY 01, 2020
Issued by: State Administration for Market Regulation;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Normative references ... 4 
3 Terms and definitions ... 5 
4 Assessment requirements ... 5 
5 Test methods ... 6 
6 Calculation method ... 7 
7 Assessment method ... 7 
Technical requirements of assessment for high
efficiency water pollutants control equipment - Rotary
aerator
1 Scope
This Standard specifies terms and definitions, assessment requirements, test
methods, calculation methods and assessment methods for high efficiency
rotary aerator.
This Standard is applicable to rotary aerator of vertical shaft, rotary aerator of
horizontal shaft and impeller aerator of self-suction that is driven by motor and
used for various industrial wastewater, municipal wastewater treatment
processes and water reoxygenation.
2 Normative references
The following referenced documents are indispensable for the application of
this document. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any
amendments) applies.
GB/T 3768, Acoustics - Determination of sound power levels and sound
energy levels of noise sources using sound pressure - Survey method using
an enveloping measurement surface over a reflecting plane
GB 18613, Minimum allowable values of energy efficiency and energy
efficiency grades for small and medium three-phase asynchronous motors
GB/T 27872, Submersible aerator
CJ/T 294, Rotating disc aerator
JB/T 8700, Technical specifications to rotor aerator with horizontal shaft used
in oxidation ditch
JB/T 12579, Mufti-function high-efficient aerator
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1 high efficiency rotary aerator
A rotary aerator with safe and reliable operation, superior oxygenation
performance and leading energy efficiency within a comparable range with
same kind.
3.2 energy efficiency ratio for rotary aerator
Under specified testing conditions, the ratio of the amount of oxygen delivered
to the clean water of which the dissolved oxygen is zero per unit time of the
rotary aerator to the total energy consumed by the whole machine.
3.3 rotary aerator of vertical shaft
A surface aerator that the axis of rotation of the aeration impeller is
perpendicular to the horizontal plane.
3.4 rotary aerator of horizontal shaft
A surface aerator that the axis of rotation of the aeration impeller is parallel to
the horizontal plane.
3.5 impeller aerator of self-suction
An aerator that is installed at the bottom of a pool, the oxygen is filled to water
body by means of automatic inhalation.
4 Assessment requirements
4.1 Basic requirements for qualitative assessment
4.1.1 The manufacturer of high efficiency rotary aerator shall meet relevant
environmental protection laws, regulations and standards. The quality
management system, environmental management system, occupational health
and safety management system and energy management system shall be
established, implemented and maintained.
4.1.2 The design, manufacture, installation and test methods, inspection rules
of high efficiency rotary aerator shall comply with the provisions of JB/T 12579,
CJ/T 294, JB/T 8700 and GB/T 27872.
4.1.3 The motor used for high efficiency rotary aerator shall not be less than