The photovoltaic wastewater mainly comes from the cutting, grinding, and slicing of silicon rods, as well as the waste additive liquid and cleaning wastewater generated during the grinding, corrosion, and polishing processes of silicon wafers. The main difficulties in its treatment include: high concentration of organic matter (mainly polyethylene glycol, etc.), suspended solids (mainly silicon powder and silicon carbide), as well as pollutants such as fluoride ions, acid bases (mainly buffer acids such as hydrofluoric acid and nitric acid).
Process flow diagram
Equipment list
Capacity 5-75m 3/h
Name
Basic system
Quantity
Senior system
Quantity
Complete system
Quantity
System description
Reaction system
Sludge pump
1 unit
Sludge pump
1 unit
Sludge pump
2 units
The reaction system mainly doses right chemicals such as coagulants and coagulants to the sludge to promote the flocculation of sludge particles and improve its dehydration performance.
Pipeline mixer
2 pieces
MR reaction tank
1 set
MR reaction tank
1 set
PAM dosing bucket
1 piece
PAM dosing bucket
2 pieces
PAM integrated dosing device
1 set
PAM dosing pump
1 unit
PAM dosing pump
1 unit
PAM dosing pump
2 units
PAC dosing bucket
1 piece
PAC dosing bucket
2 pieces
PAC dosing bucket
2 pieces
PAC dosing pump
1 unit
PAC dosing pump
1 unit
PAC dosing pump
2 units
Flowmeter
/
Flowmeter
/
Flowmeter
1 piece
Sedimentation system
VMC
1 unit
VMC
1 unit
VMC
1 unit
The sedimentation system is mainly used for concentration treatment of sewage, facilitating pressure filtration.
Pneumatic sludge discharge valve
1 piece
Pneumatic sludge discharge valve
1 piece
Pneumatic sludge discharge valve
1 piece
Sludge pump
1 unit
Sludge pump
1 unit
Sludge pump
2 units
Drainage pump
1 unit
Drainage pump
1 unit
Drainage pump
2 units
Pressure filtration system
Mixing tank
1 piece
Mixing tank
1 piece
Mixing tank
1 piece
The main function of the pressure filtration system is solid-liquid separation
Feeding pump
1 unit
Feeding pump
1 unit
Feeding pump
2 units
KMP
1 set
KMP
1 set
KMP
1 set
Control system
PLC control cabinet
1 set
PLC control cabinet
1 set
PLC control cabinet
1 set
All automation control of equipment provided by our company will be integrated into this system and run fully automatically
Accessaries
Pipelines, valves, cables, etc
1 batch
Pipelines, valves, cables, etc
1 batch
Pipelines, valves, cables, etc
1 batch
The specific quantity of cables and pipe valves required within the system depends on the customer's on-site situation.
Please request a detailed list of system from our sales consultant.
Function comparison
Function
Basic system
Senior system
Complete system
Fully automated control
√
√
√
Fault alarm
√
√
√
Automatic reaction container
-
√
√
Automatic backup switching
-
-
√
Automatic regulation of dosing
-
-
√
Frequency conversion control or not
-
-
√
Soaking interval time
4 hours
8 hours
Fully automatic
Optional features
Serial number
Name
Specifications
Function
1
Water Reuse
PE tank+pump+liquid level gauge+integrated control
Transport the supernatant to the production line for reuse using pressurized transportation method
2
Special anti-corrosion
FRP Coating for the liquid connection parts
Prevent corrosion caused by high acid, high salt, high fluoride, etc