Nanjing Lanjiang Water Treatment Equipment Co., Ltd
| Coagulation tank retention | 2-5 minutes |
| Delivery Time | 30 |
| Sludge concentration | 120 -180 mg/L |
| Surface loading rate | 20 m³/(m²*h) |
| Payment Terms | T/T |
| Sludge recirculation ratio | 3% -15% |
| Flocculation tank retention | 5-10 minutes |
| Inclined tube angle | 60° |
| Model Number | CDC Series |
| Brand Name | Lanjiang |
| Place of Origin | China |
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Product Specification
| Coagulation tank retention | 2-5 minutes | Delivery Time | 30 |
| Sludge concentration | 120 -180 mg/L | Surface loading rate | 20 m³/(m²*h) |
| Payment Terms | T/T | Sludge recirculation ratio | 3% -15% |
| Flocculation tank retention | 5-10 minutes | Inclined tube angle | 60° |
| Model Number | CDC Series | Brand Name | Lanjiang |
| Place of Origin | China | ||
| High Light | Surface Water Pre-Filtration High-Density Clarifier System ，Sludge Recirculation High-Rate Clarifier ，Inclined-Tube Clarification Clarification System | ||
The high-rate clarification process represents advanced sedimentation technology built upon principles of sludge coagulation, sludge recirculation, inclined-tube separation, and sludge thickening. Through optimized hydraulic and structural design, this system integrates solid-liquid separation and sludge thickening within a single treatment unit. Its specially engineered reaction and clarification zones make it particularly effective for reclaimed-water reuse applications and advanced wastewater treatment requiring stringent discharge standards.
The high-rate clarifier operates through four distinct sections:
Treatment begins with coagulant addition to raw water, where controlled mixing ensures rapid and uniform dispersion. The water then progresses to the flocculation zone, where flocculant addition promotes particle collision and formation of larger, denser flocs for enhanced settling. The sedimentation section combines pre-settling for rapid removal of large flocs with inclined-tube clarification for capturing smaller particles. Finally, clarified effluent is collected via overflow troughs and discharged from the system.
Equipped with a high-speed mixer for rapid coagulant dispersion and uniform mixing with raw water, promoting microfloc formation. Optimal coagulant dosage should be determined through jar testing based on influent water characteristics.
Features two sequential sections: a slow-speed mechanically mixed reaction zone and a plug-flow reaction zone. The system ensures thorough mixing of raw water, recirculated sludge, and coagulant aid while promoting floc growth under low-energy conditions. Critical transfer velocity must be maintained below 0.056 m/s to prevent floc damage.
Utilizes inclined-plate or inclined-tube clarifiers based on shallow-tank sedimentation theory, providing large effective settling area within compact volume. Regular cleaning or backwashing through installed flushing systems maintains long-term performance and prevents sludge accumulation.
| Parameter | Specification |
|---|---|
| Maximum Surface Loading Rate | 20 m³/(m²*h) at peak flow |
| Hydraulic Retention Time | Coagulation: 2-5 minutes Flocculation: 5-10 minutes |
| Chemical Concentrations | PAC: 10%-20% PAM: 0.15%-0.30% |
| Chemical Dosage | PAC: 1-3 kg/m³ PAM: 0.01-0.03 kg/m³ |
| Inclined-Tube Design | Diameter: 25-35 mm Length: 1.0 m Angle: 60° |
| Sludge Recirculation Ratio | 3% - 15% |
| Flocculation Zone Sludge Concentration | 120 - 180 mg/L |
| Mixer Speed Ranges | Coagulation: 80-120 r/min Flocculation: 15-20 r/min |
| Sludge Level Control | 1.0 - 1.8 m |
Company Details
Business Type:
Manufacturer
Year Established:
2001
Total Annual:
40000000-70000000
Employee Number:
80~100
Ecer Certification：
Verified Supplier
Nanjing Lanjiang is a professional manufacturer integrating the design, research and development, production, and sales of wastewater treatment equipment. The company is located at No.18 Xinyu Road, Hengliang Street, Liuhe District, in the northern suburbs of Nanjing (adjacent to the Ningtong Expres... Nanjing Lanjiang is a professional manufacturer integrating the design, research and development, production, and sales of wastewater treatment equipment. The company is located at No.18 Xinyu Road, Hengliang Street, Liuhe District, in the northern suburbs of Nanjing (adjacent to the Ningtong Expres...
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