HJ 577-2010 English PDF

HJ 577-2010: Technical specifications for sequencing batch reactor activated sludge process
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HJ 577-2010
ENVIRONMENTAL PROTECTION STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
Technical specifications for sequencing
batch reactor activated sludge process
ISSUED ON: OCTOBER 12, 2010
IMPLEMENTED ON: JANUARY 01, 2011
Issued by: Ministry of Environmental Protection
Table of Contents
Foreword ... 4 
1 Scope ... 5 
2 Normative references ... 5 
3 Terms and definitions ... 7 
4 General requirements ... 10 
5 Design flowrate and design water quality ... 11 
6 Process design ... 14 
7 Main process equipment ... 27 
8 Testing and control ... 29 
9 Electrical ... 31 
10 Construction and acceptance ... 31 
11 Operation and maintenance ... 38 
Appendix A (Informative) Other deformation processes of the sequencing
batch reactor activated sludge process ... 42 
Technical specifications for sequencing
batch reactor activated sludge process
1 Scope
This standard specifies the technical requirements for the process design, main
process equipment, testing and control, construction and acceptance, operation
and maintenance of the sewage treatment projects which use the sequencing
batch reactor activated sludge method.
This standard is applicable to urban sewage and industrial wastewater
treatment projects which use the sequencing batch reactor activated sludge
process. It can be used as technical basis for environmental impact assessment,
design, construction, environmental protection acceptance, facility operation
management.
2 Normative references
The contents of this standard refer to the terms in the following documents. For
undated references, the valid version applies to this standard.
GB 3096 Environmental quality standard for noise
GB 12348 Emission standard for industrial enterprises noise at boundary
GB 12801 General principles for the requirements of safety and health in
production process
GB 18599 Standard for pollution control on the storage and disposal site for
general industrial solid wastes
GB 18918 Discharge standard of pollutants for municipal wastewater
treatment plant
GB 50014 Code for design of outdoor waste-water engineering
GB 50015 Code for design of building water supply and drainage
GB 50040 Code for design of dynamic machine foundation
GB 50053 Code for design of 10kV and under electric substation
GB 50187 Code for design of general plan of industrial enterprises
GB 50204 Code for acceptance of constructional quality of concrete
structures
GB 50222 Code for fire prevention in design of interior decoration of
buildings
GB 50231 General code for construction and acceptance of mechanical
equipment installation engineering
GB 50254 Code for construction and acceptance of cow-voltage apparatus
electric equipment installation engineering
GB 50268 Code for construction and acceptance of water and sewerage
pipeline works
GB 50334 Quality acceptance code for municipal sewage treatment plant
engineering
GB 50352 Code for design of civil buildings
GBJ 16 Code for fire protection of building design
GBJ 87 Specifications for the design of noise control system in industrial
enterprises
GB 50141 Code for construction and acceptance of water and sewerage
structures
GBZ 1 Hygienic standards for the design of industrial enterprises
GBZ 2 Occupational exposure limit for hazardous agents in the workplace
CJJ 60 Technical specification for operation, maintenance and safety of
municipal wastewater treatment plants
HJ/T 91 Technical specifications requirements for monitoring of surface
water and waste water
HJ/T 247 Specifications for environmental protection product. Vertical shaft
mechanical surface aerator
HJ/T 251 Specifications for environmental protection product. Roots blower
HJ/T 252 Specifications for environmental protection product. Middle and
fine bubble diffusers
HJ/T 260 Specifications for environmental protection product. Blast
submerged aerator
HJ/T 277 Specifications for environmental protection product - Rotary
decanter
HJ/T 278 Specifications for environmental protection product - Single stage
and high speed aeration centrifugal blower
HJ/T 279 Specifications for environmental protection product - Pusher
submersible agitator
HJ/T 353 Technical guidelines of wastewater on-line monitoring equipment
and installation (on trial)
HJ/T 354 Technical specifications for check and acceptance of wastewater
on-line monitoring system (on trial)
HJ/T 355 Technical specifications for the operation and assessment of
Wastewater on-line monitoring system (on trial)
Administrative measures for environmental protection acceptance of
completion of construction projects (State Environmental Protection
Administration, 2001)
3 Terms and definitions
The following terms and definitions apply to this standard.
3.1
Sequencing batch reactor activated sludge process
Refers to the activated sludge wastewater treatment method consisting of
five basic processes of fill, aeration, settle, drawn, idle in the same reaction
tank (reactor), abbreviated as SBR method. The main deformation
processes include a cyclic activated sludge system/technology (CASS or
CAST process), a demand aeration tank-intermittent aeration tank (DAT-IAT
process), an alternating internal circulation activated sludge process (AICS
process), etc.
3.2
Operating cycle
Refers to a cycle in which a reaction tank completes the fill, aeration, settle,
drawn, idle work procedures in sequence. The time elapsed during an
operating cycle is called the cycle time.
3.9
Reaction time
Refers to the time it takes for the aeration to stop during the fill and aeration
processes in one operating cycle.
3.10
Biological selector
Refers to the pre-reaction zone that is provided at the front end of the
reaction tank, to bring the return sludge into contact with and mix the
undiluted sewage. The types of biological selectors are aerobic, anoxic and
anaerobic.
3.11
Main reaction zone
Refers to the aerobic reaction zone downstream of the biological selector in
the CASS or CAST reaction tank.
3.12
Pretreatment
Refers to the treatment measures set in front of the SBR reaction tank when
the influent water’s quality can meet the biochemical requirements of the
SBR process, such as grilles, grit chambers, primary sinks, air floatation
tanks, grease traps, fiber and hair traps, etc.
3.13
Preprocessing
Refers to the treatment process set in front of the SBR reaction tank
according to the need to adjust the water quality when the influent water’s
quality cannot meet the biochemical requirements of the SBR process, such
as hydrolysis acidification tank, coagulation sedimentation tank,
neutralization tank, etc.
3.14
Standard state
It refers to a state where the atmospheric pressure is 101325 Pa and the
temperature is 293.15 K.
Qs - Design flowrate of rainwater, L/s.
5.1.1.3 The design flowrate of integrated domestic sewage is the product of the
served population and the corresponding quota of integrated domestic sewage
quota. The quota of integrated domestic sewage shall be determined according
to the local water quota, combined with the level of the water supply and drainage
facilities inside building and the popularity of the drainage system; it can be
designed according to 80% ~ 90% of the local relevant water quota.
5.1.1.4 The total coefficient of change of integrated domestic sewage volume
shall be determined according to the actual data of change of integrated
domestic sewage volume. If there is no measurement data, it may be valued
according to the relevant provisions of GB 50014, as shown in Table 1.
Table 1 -- Total coefficient of change of integrated domestic sewage
5.1.1.5 The design flowrate of industrial wastewater as discharged into the
municipal pipeline network shall be determined according to the statistical
survey data of wastewater discharge from industrial pollution source within the
coverage of urban municipal drainage system.
5.1.1.6 The design flowrate of rainwater refers to the relevant provisions of GB
50014.
5.1.1.7 In areas with high groundwater level, it shall consider the amount of
infiltration groundwater. The amount of infiltration groundwater should be
determined based on actual measurement data.
5.1.2 Design flowrate of industrial wastewater
5.1.2.1 The design flowrate of industrial wastewater shall be designed
according to the actual wastewater flowrate as measured by the total discharge
port of the plant or industrial park. The test method shall comply with the
provisions of HJ/T 91.
5.1.2.2 The change of flowrate of industrial wastewater shall be measured
according to the characteristics of the process.
5.1.2.3 When it cannot obtain the actual measurement data, it may be
determined by referring to the relevant provisions of the current national
industrial water consumption, or otherwise determined according to the
comparison of the current drainage data of the factory of same industry, the
same scale, the same process.
5.1.2.4 When industrial wastewater and domestic sewage are combined for
Average daily flowrate / (L/s)
Total coefficient of change
requirements of the next-stage treatment unit.
6.1.2 It shall be ensured that the SBR reaction tank combines the
characteristics of ideal impulsive flow in time and complete mixing in space.
6.1.3 It shall be ensured that the SBR reaction tank has a static sedimentation
function and a good sludge-water separation effect.
6.1.4 It shall, according to the operating requirements of the SBR process, set
the testing and control system, to realize the automation of operation
management.
6.1.5 The SBR reaction tank shall be provided with a fixed accident drainage
device, which may be located at the water level at the end of the decanting.
6.1.6 The drainage of SBR reaction tank shall be equipped with a decanter that
prevents scum from flowing out of the facility.
6.1.7 For the reaction tank that restricts the aeration and fill, the fill method
should use the submerged inflow.
6.1.8 For sewage treatment plants which have large changes in water quality
and/or water volume, it should set the facilities for regulating water quality
and/or water volume.
6.1.9 The sewage treatment plant shall be provided with facilities for disinfecting
the treated effluent.
6.1.10 The design of the influent pump room, grille, grit chamber, primary
settlement tank, secondary settlement tank shall comply with the relevant
provisions of GB 50014.
6.2 Pretreatment and preprocessing
6.2.1 The SBR sewage treatment project shall be provided with a grille for the
influent. The pretreatment of the urban sewage shall also be provided with a
grit chamber.
6.2.2 According to the requirements of water quality and SBR process type,
determine whether the initial settlement tank is set in the SBR sewage treatment
project. When setting the initial settlement tank, it may not provide ultra-fine
grille.
6.2.3 When the influent water quality does not meet the conditions as specified
in 5.2.3 or when it contains substances that affect biochemical treatment, it shall,
according to the influent water quality, take appropriate pre-processing method.
6.3 Design of SBR process
6.3.5.1 When biological phosphorus removal of sewage cannot meet the
requirements, it may use chemical phosphorus removal. The type of agent,
dosage, dosing point shall be determined by testing or by reference to similar
projects.
6.3.5.2 In case of chemical phosphorus removal, for the equipment and
pipelines exposed to corrosive substances, it shall take anti-corrosion
measures.
6.3.5.3 When the alkalinity for nitrification is insufficient, it shall provide the alkali
addition system. The pH value at the nitrification stage shall be controlled at 8.0
~ 8.4.
6.3.6 Sludge system
6.3.6.1 The design of sludge volume shall consider residual sludge and
chemical dephosphorization sludge.
6.3.6.2 Calculation of residual sludge volume
Make calculation according to sludge yield coefficient, attenuation coefficient,
non-biodegradable and inert suspended solid.
Where:
ΔX - The residual sludge amount, kg/d;
Y - The sludge yield coefficient, which is selected according to Table 3, Table
4, Table 5, Table 6, Table 7;
Q - Designed average daily sewage volume, m3/d;
S0 - 5-day biochemical oxygen demand of influent in the reaction tank, kg/m3;
Se - 5-day biochemical oxygen demand of effluent in the reaction tank, kg/m3;
Kd - Attenuation coefficient, d-1;
V - The total volume of reaction tank, m3;
XV - The average mass concentration of mixed liquid volatile suspended
solids (MLVSS) in the reaction tank, kg/m3;
f - Sludge conversion rate of influent suspended solids (MLSS/SS), kg/kg,
which should be determined according to the test data; or otherwise it may
be taken as 0.5 ~ 0.7 in absence of test data;
d) The mixed liquid in the aerobic zone of the reaction tank returns back to
the anoxic zone; the reflux ratio shall be determined according to the test,
which shall not be less than 20%.
6.4.3 When CASS or CAST requires phosphorus removal and denitrification,
the design of the reaction tank shall meet the following requirements:
a) The reaction tank is generally divided into three reaction zones, one is the
anaerobic biological selector, the second zone is the anoxic zone, the third
zone is the aerobic zone (as shown in Figure 4). The reaction tank may
also be divided into two reaction zones. The zone 1 is anoxic (or anaerobic)
biological selector; the zone 2 is an aerobic zone;
b) When the dissolved oxygen in the anoxic zone of the reaction tank is less
than 0.5 mg/L, carry out the denitrification reaction is carried out, where
the effective volume should account for 20% of the total effective volume
of the reaction tank;
c) The dissolved oxygen in the anaerobic biological selector of the reaction
tank is 0, the phosphorus-producing bacteria releases ...