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{"title":"QJB-W 1.5 Submersible Sludge Recirculation Pump 1.5 kW Energy-Efficient with DN","imgUrl":"https:\/\/img.chinax.com\/nimg\/e3\/a5\/a841c41942ea2e2b8a606de193c0-200x200-1\/qjb_w_1_5_submersible_sludge_recirculation_pump_1_5_kw_energy_efficient_with_dn_400_discharge_flange_for_small_scale_wwtps.jpg","attrs":{"Model Number":"QJB-W 1.5","Current draw":"4.1 A","Place of Origin":"China","Impeller diameter":"400 mm"}}
{"title":"1.5kW Submersible Fountain Pump Aerator with 2.2\/2.5m Spray Height and Stainless","imgUrl":"https:\/\/img.chinax.com\/nimg\/2f\/58\/a3fe5d6d28b7517cbee76548428e-200x200-1\/1_5kw_submersible_fountain_pump_aerator_with_2_2_2f2_5m_spray_height_and_stainless_steel_pump_body_for_pond_oxygenation.jpg","attrs":{"Model Number":"PQ 15","Spray height":"2.2\/2.5 m","Payment Terms":"T\/T","Oxygen production":"3.2-4.0 kgO\u2082\/h"}}
{"title":"3 kW Low-Speed Submersible Flow Mixer for Denitrification & Phosphorus Removal","imgUrl":"https:\/\/img.chinax.com\/nimg\/2d\/59\/0349768229c81959983576e8bf44-200x200-1\/3_kw_low_speed_submersible_flow_mixer_for_denitrification_26_phosphorus_removal_in_wastewater_treatment.jpg","attrs":{"Impeller diameter":"\u00d81,100 mm to \u00d81,800 mm","Model Number":"QJB Series","Motor protection":"IP68","Payment Terms":"T\/T"}}
{"title":"QJB 1.5 kW Low-Speed Propelling Submersible Flow Mixer for Denitrification &","imgUrl":"https:\/\/img.chinax.com\/nimg\/a4\/9b\/5a12568dd07736ab49750c7297ea-200x200-1\/qjb_1_5_kw_low_speed_propelling_submersible_flow_mixer_for_denitrification_26_phosphorus_removal.jpg","attrs":{"Model Number":"QJB Series","Impeller diameter":"\u00d81,100 mm, \u00d81,400 mm, \u00d81,800 mm","Delivery Time":"15","Place of Origin":"China"}}
{"title":"QJB 2.2 kW Low-Speed Submersible Flow-maker with PUR Impeller for WWTP","imgUrl":"https:\/\/img.chinax.com\/nimg\/59\/0c\/b3447c96e4da54bb51badc7fe4fb-200x200-1\/qjb_2_2_kw_low_speed_submersible_flow_maker_with_pur_impeller_for_wwtp_circulation.jpg","attrs":{"Model Number":"QJB Series","Impeller diameter":"\u00d81,100 mm, \u00d81,400 mm, \u00d81,800 mm","Place of Origin":"China","Thrust":"1,870 N"}}
IP68 Protection | Class F Insulation | Max Depth 10 m
Anti-Tangle 3-Blade Swept-Back Impeller Design
Suitable for Sludge Return, Recirculation & Denitrification in Small-Medium WWTPs
ISO9001 & CE Certified | Made in Nanjing, China
Product Overview
The Lanjiang QJB-W 2.5 is a versatile submersible sludge return pump designed for small-to-medium wastewater treatment plants that require a dependable balance of hydraulic performance and energy efficiency. Rated at 2.5 kW (6.8 A), this model provides approximately 67% more power than the 1.5 kW variant, giving operators extra headroom for slightly deeper basins, longer return lines, or higher mixed liquor suspended solids (MLSS) concentrations.
Design Features
Impeller System
400 mm diameter 3-blade swept-back impeller with excellent anti-tangling and self-cleaning characteristics
Installation
Compatible footprint with QJB-W 1.5 for direct drop-in upgrades without modifying existing guide rail systems
IP68 enclosure and Class F insulation provide full protection against continuous submersion
Maintenance Advantages
The auto-coupling guide rail system allows the pump to be raised and lowered without tank entry, vastly simplifying routine inspection and maintenance while ensuring reliable 24/7 operation.
Quality Assurance: ISO9001 & CE Certified | Manufactured in Nanjing, China
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
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...
