Underground carbon steel anti-corrosion domestic sewage treatment equipment

Scope of application: Rural domestic sewage, highway service area domestic sewage, employee living area sewage, school sewage, sewage, airport station domestic sewage, factory domestic sewage and similar sewage
1、 Water quality analysis:

Domestic sewage mainly refers to the discharge water generated from various kitchen water, washing water, and bathroom water used in human life, mostly non-toxic inorganic salts. Generated in the process of human lifesewageIt is one of the main sources of water pollution. mainlyFecal and washing wastewater.Its characteristics areGood biodegradability, high N and P concentrations, containing pathogens, overall pollutant concentration is not very high, COD, BOD and other standards are easily met.

2、 Process selection:

Based on the specific characteristics of sewage quality in this project, this plan intends to adopt conventional methods“A/O biological contact oxidation+disinfection equipment+stacked screw sludge dewatering machine”The treatment process is relatively mature, easy to operate, low daily costs, stable effluent, and the main equipment is a steel structure. Considering the surrounding environment and hygiene issues, the sewage treatment project has decided to adopt a fully buried structure, with soil covering the upper part and planting flowers, grass, and lawns to further beautify the environment. This process is a third level standard and can be changed to a first level direct discharge standard by adding equipment.

3、 Process flow:

4、 Process characteristics:

(1) Mature process flow, few structures, flexible operation, and convenient management.
(2) Low infrastructure investment and low operating costs.
(3) The treatment effect is stable, the effluent quality is good, and decarbonization, denitrification, and phosphorus removal can be achieved.
(4) Low sludge volume, stable sludge properties, and low sludge treatment costs.
(5) Can withstand the impact load of water quantity and quality.
(6) The sewage treatment system has high automation and convenient management.

5、 Design Basis:

·Environmental Protection Law of the People's Republic of China

·《hospitalIntegrated Wastewater Discharge Standard GB8978-96

·Technical Conditions for Manufacturing Water Treatment Equipment JB2932-86

·Integrated Wastewater Discharge Standard (GB8978-1996).

·Design Code for Outdoor Drainage (GB50014-2006)

·Design Code for Reclaimed Water in Buildings (GB50336-2002)

·Code for Design of Building Water Supply and Drainage (GB50015-2003)

·Design Code for Pipeline Structure of Water Supply and Drainage Engineering (GB50332-2002)

·Design Code for Structures of Water Supply and Drainage Engineering (GB50069-2002)

·Code for Construction and Acceptance of Water Supply and Drainage Structures (GB50141-2008)

·Technical Conditions for Manufacturing Water Treatment Equipment (JB/T2932-1999)

·Code for Construction and Acceptance of Electrical Equipment (GB50254~50259-1996)

·Technical Specification for Construction and Acceptance of Electric Power Construction (DL5031-94)(Pipeline section)

·Environmental Quality Standards for Noise (GB3096-2008)

·Code for Construction and Acceptance of On site Equipment and Industrial Pipeline Welding Engineering (GB50683-2011)

·GB/T18920-2002 "Urban Wastewater Reuse and Urban Miscellaneous Water Quality"

·Code for Construction and Acceptance of Mechanical Equipment Installation Engineering (GB50231-2009)

·Pollutant Discharge Standards for Urban Sewage Treatment Plants (GB18918-2002);

·GBJ15-188- Code for Design of Building Water Supply and Drainage;

· Implementation Manual for Water Supply and Drainage Standards and Specifications;

·Design Specification for Outdoor Emissions（GBJ14－87）；

·Environmental Noise Standards（GB5096－93）；

·Design Code for Low Voltage Distribution GB50054-95;

· 《Urban sewage recycling and utilization Water Quality for Irrigation in Farmland(GB 20922-2007)；

·The actual experience and engineering parameters obtained from similar projects completed by our company;

·Integrated Wastewater Discharge Standard (GB8978-1996).

· Water quality standard for sewage discharged into urban sewers cj343-2010