Underground aquaculture wastewater treatment equipment

1、 Water quality analysis:

Aquaculture wastewater has typical "three highs" characteristics, namely high organic matter concentration, COD up to 3000-12000mg/l, ammonia nitrogen up to 800-2200mg/l, and suspended solids SS exceeding the standard by tens of times; The biodegradability is average; Strong odor; The flushing discharge time is concentrated and the impact load is high. Based on the characteristics of this sewage, a combination of biochemical and physicochemical treatment methods can achieve good treatment results.

2、 Process selection:

Based on the specific characteristics of sewage quality in this project, this plan intends to adopt conventional methodsAnaerobic+Air flotation machine (dosing)+A/O/O Biological contact oxidation+disinfection equipment”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.

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

·Emission Standards for Pollutants from Livestock and Poultry Farming IndustryGB18596-2001

·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

More detailed scheme information is welcome. Equipment can be customized according to on-site conditions