Professional Large-scale Sewage Treatment Equipment Meeting International Discharge Standards
Product Description
This domestic sewage treatment system adopts the A²O (anaerobic - anoxic - aerobic) biological treatment process as the core, supplemented by physical pre-treatment, deep disinfection and sludge disposal units, forming a complete treatment process of "pre-treatment → biochemical treatment → sedimentation and separation → disinfection → sludge treatment". The system design can achieve efficient removal of pollutants such as COD, BOD5, NH3-N, TP and SS in domestic sewage, and the effluent quality can meet the "Pollutant Discharge Standard for Urban Sewage Treatment Plants" (GB 18918-2002) level B and above. The sludge can be disposed of in compliance after treatment.
Pre-unit
1. Coarse rack
As the first physical barrier for the sewage to enter the system, it intercepts floating objects with a diameter of ≥ 5 cm (such as plastic bags, branches, fabrics, etc.) in the sewage, preventing subsequent pump blockages and pipeline entanglements, and reducing the risk of equipment failure.
- Gap size: 50mm (ensuring complete retention of large-sized impurities)
- Specifications: 0.3m (width) × 0.4m (height)
- Quantity: 1 unit
- Material: 304 stainless steel
2. Fine rack
The core of the fine mechanical screen is to precisely intercept suspended solids ranging from 1 to 10 millimeters, protecting subsequent equipment, reducing processing load, and ensuring process stability. The operation should adhere to start-up and shutdown procedures, parameter monitoring, slag cleaning maintenance, and emergency handling to ensure continuous and efficient operation.
- Gap: 5mm (ensuring complete retention of large-sized impurities)
- Specifications: Channel width 600mm, channel depth 2000mm, channel length 1500mm
- Quantity: 1 unit
- Material: 304 stainless steel + stainless steel tooth rake
3. Pump well + Booster pump
Function: The pump well is used to temporarily store the sewage that has passed through the coarse screen filter, to balance the fluctuation of incoming water volume; the booster pump lifts the sewage to the subsequent screen sedimentation tank, overcoming the elevation limitation of the gravity flow process, and ensuring the continuous operation of the system.
- Pump well: Specifications: Ø1.8m (diameter) × 2m (depth), effective volume approximately 5.09m³, capable of meeting the demand for short-term water volume adjustment.
- Booster Pump (WQ80-10-4):
▪ Model: WQ80-10-4 (Submersible Sewage Pump, suitable for sewage containing a small amount of impurities)
▪ Key Parameters: Flow Rate 80m³/h, Head 10m, Power 4KW
▪ Supplementary Equipment: Coupling device (facilitates installation, disassembly and maintenance of the pump body), Guide Rod (guides the up and down movement of the pump body to ensure precise coupling)
Quantity: 2 units (1 in use, 1 as backup. In case of pump failure during operation, the backup pump will automatically switch over to ensure the continuous operation of the lifting function)
4. Grate sedimentation tank
Process Function: Further remove the smaller-sized suspended solids (SS) and sand particles in the wastewater. The fine screen is used to intercept impurities with a particle size of ≤ 1mm. The sand separation function is employed to separate the denser sand particles (such as quartz sand, crushed stones, etc.) to prevent the sand particles from entering the biochemical reactor, which could cause equipment wear and a decrease in the concentration of activated sludge.
- Tank dimensions: 4m (length) × 1.5m (width) × 2m (effective water depth), total height 4m (including overhang and equipment installation height)
Material: 304 stainless steel (resistant to corrosion, high strength, suitable for long-term use in sewage environment)
- Companion equipment:
▪ Fine screen: Power 1.1KW, mesh size ≤ 1mm, automatically intercept fine suspended solids
▪ Sand feeder: Power 1.1KW, transports the sand particles from the bottom of the sedimentation tank to the sand elevator
▪ Sand elevator: Power 1.1KW, lifts the sand particles to the outside sand bin for convenient collection and disposal
5. Receiving tank + Booster pump
Process Function: Collect the wastewater that has been treated by the grille sedimentation tank, balance the water volume again and stabilize the water quality, providing uniform inlet conditions for the subsequent biochemical reactors; The booster pump precisely transports the wastewater to the biochemical reactor, controlling the inlet flow rate to match the processing capacity of the biochemical system.
- Sedimentation tank:
Specifications: 11.5m (length) × 2.2m (width) × 2.5m (total height), effective water depth 2.4m (including 0.1m for inspection opening, which is used for equipment maintenance), single tank volume approximately 62.04m³, 4 units (total effective volume approximately 248.16m³, capable of meeting large water volume regulation requirements).
- Booster Pump (WQ40-10-2.2):
▪ Model: WQ40-10-2.2 (Submersible Sewage Pump, suitable for low-concentration suspended solids wastewater)
▪ Key Parameters: Flow rate 40 m³/h, Head 10 m, Power 2.2 KW
▪ Quantity: 4 units (2 in use, 2 as backups, the number of operating units is automatically adjusted according to the liquid level of the collection tank to ensure stable water intake)
Biochemical Treatment Unit
1. Biochemical reactor
- Process Function: The core treatment unit adopts the A²O process to achieve integrated treatment of "organic matter degradation + nitrogen removal + phosphorus removal":
▪ Anaerobic section: The polyphosphate bacteria release phosphorus to prepare for phosphorus uptake by the subsequent aerobic section;
▪ Anoxic section: The denitrifying bacteria convert the nitrate nitrogen produced in the aerobic section into nitrogen gas, achieving nitrogen removal;
▪ Aerobic section: The aerobic microorganisms degrade COD and BOD5, and the nitrifying bacteria convert ammonia nitrogen into nitrate nitrogen, while the polyphosphate bacteria take up excessive phosphorus;
▪ Secondary sedimentation tank (conical bottom + inclined tube): Achieve solid-liquid separation of activated sludge and treated water, some of the sludge is refluxed to the anaerobic section, some is discharged as residual sludge, and the supernatant enters the disinfection unit.
- Reactor specifications: 11.5m (length) × 2.2m (width) × 2.5m (total height), effective water depth 2.4m (including inspection opening 0.1m), single pool effective volume approximately 62.04m³.
- Quantity: 10 units (5 units + 5 units operating in parallel, total effective volume approximately 620.4m³, meeting the processing capacity requirements; parallel design allows for flexible adjustment of the number of operating pools to adapt to water volume fluctuations).
2. Nitration liquid return pump
Process function: The nitrate-rich liquid produced by the aerobic section of the biochemical reactor is recycled back to the anoxic section, providing electron acceptors for the denitrifying bacteria, enabling the conversion of nitrate nitrogen to nitrogen gas, thereby reducing the NH3-N concentration in the effluent and ensuring the denitrification effect.
▪ Model: WQ60-9-3 (Submersible Sewage Pump, suitable for nitrification liquid containing activated sludge)
▪ Key parameters: Flow rate 60m³/h, Head 9m, Power 3KW
▪ Quantity: 4 units (The number of operating units can be adjusted according to the return flow rate of the nitrification liquid. It is recommended that the return flow ratio be 200%-300%, meaning the return flow is 2-3 times the inlet flow.)
Deep Processing Unit
Dosing plant
- Process Function: Add auxiliary chemicals (such as disinfectants, coagulants) according to the treatment requirements to further reduce the TP concentration or SS residue in the effluent:
▪ Disinfectant (sodium hypochlorite): Disinfect harmful bacteria such as Escherichia coli in the wastewater;
▪ Coagulant (such as polyacrylamide PAM): Promote the aggregation of tiny suspended solids into large flocs, improving the sedimentation efficiency.
- Device specifications: PE1000L (PE storage tank, for storing chemical solutions).
- Supporting equipment:
▪ Mixer: Power 0.75KW, for mixing the chemical solutions to ensure uniform concentration.
▪ Metering pump: 20L × 2 units (for precisely controlling the dosage of the chemicals to avoid waste or secondary pollution).
- Quantity: 1 set (adjustable dosage according to the TP and SS indicators of the effluent).
Sludge Treatment Unit
1. Air compressor + Pneumatic diaphragm pump
- Process function: The air compressor provides compressed air for the pneumatic diaphragm pump as the power source; the pneumatic diaphragm pump conveys the concentrated sludge (with a moisture content of 97%-98%) to the plate and frame filter press to achieve continuous sludge feeding.
- Parameter requirements:
▪ Air compressor: Power 5.5KW, exhaust pressure 0.6-0.8MPa, exhaust volume suitable for the diaphragm pump's requirements (to ensure stable inlet pressure of the diaphragm pump).
▪ Pneumatic diaphragm pump: Specification DN50 (suitable for conveying concentrated sludge, avoiding blockage), quantity 1 unit.
2. Plate-and-frame filter press
- Process Function: Conduct deep dehydration treatment on the concentrated sludge. Through plate and frame compression, the moisture content of the sludge is reduced from 97%-98% to 60%-70%, forming a sludge cake with low moisture content and small volume, which is convenient for subsequent transportation and disposal (such as sanitary landfilling, incineration or resource utilization).
▪ Parameter Requirements:
▪ Model: 630 type, filtration area 30 square meters, specifications 4.2m (length) × 1.04m (width) × 1.2m (height).
▪ Core Function: Includes an automatic plate pulling and sludge discharge device (reduces manual operation and improves dehydration efficiency).
▪ Quantity: 1 unit (can handle approximately 10-15m³ of concentrated sludge per day, meeting the system's sludge production requirements).
Product Parameters
| Serial number |
Model |
HRXS-IW78T |
| 1 |
Capacity |
102m³ /D |
| 2 |
Meterial |
Carbon Steel anticorrosion |
| 3 |
Treatment |
Wastewater,Sewage,Effluent Purification Recycle |
| 4 |
Use for |
Hospital,Slaughterhouse,Textile Dyeing,Printing |
| 5 |
Installation Type |
Underground / Onground |
| 6 |
Colour |
Grey/Silver/Blue/Balck/ Customerized |
| 7 |
Process |
AO / A2O /A30 /AO+MBR |
| 8 |
Weight(T) |
5.6T |
| 9 |
Wall Thickness(mm) |
6 |
10 |
Electricity
|
220V, 380V |
Other Product
FAQ
Q:How to pay?
A:TT and L/C are acceptable and TT will be more appreciated. 30% deposit before producing, 70% balance before loading by TT.
Q:What is the delivery time?
A:It depends on order quantities. Generally speaking, the delivery time will be within 3-4 weeks.
Q:How to package the sewage treatment plant?
A:We use standard seaworthy package.
Q:How to keep your equipments from corrosion?
A:We use the world-famous paint, like epoxy-coal tar pitch etc. What's more, we paint strictly according to the standard process.
Q:How to install after the equipments arriving destination?
A:We will provide detailed illustrations to you. And we will send a technicians to guide for installation and debugging. after debugging equipment, he will teach your workers how to use it and how to maintain it.
Q:How about the warranty?
A: If there is any malfunction of the equipment during the warranty period, our company promises to propose a solution within 24 hours. If it is caused by non-human causes, our company provides repairs free of charge and guarantees that the equipment is running well again.
Q:What's the certification do you have?
A: We have CE, ISO9001, OHSAS18001, ISO14001 Certifications.
Welcome to visit and conduct business cooperation!
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