The industrial wastewater rotary lobe pump is a positive displacement pump specially developed for complex working conditions such as industrial sewage, sludge, solid-laden wastewater and chemical wastewater. Adopting a dual-rotor counter-rotating structure, it features low shear, low pulsation, strong self-priming capacity, abrasion resistance and anti-clogging performance. It can stably convey various industrial wastewater media including particulate, high-viscosity, corrosive and gas-liquid mixed fluids. Widely applied in wastewater treatment scenarios of petrochemical, chemical, electroplating, papermaking and municipal sewage industries, it serves as core fluid equipment for sludge transportation, wastewater lifting, scum suction and chemical dosing in industrial water treatment systems.
Rotary lobe pump for industrial wastewater
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Flow(m³/h)
1 ~ 1200
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Pressure range (MPa)
0 ~ 1.6
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Viscosity range(cp)
≤100000
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Self-priming height(m)
7.5
- Description
- Technical Specification
This series of industrial wastewater rotary lobe pumps are designed and manufactured in strict accordance with API676 industry standards with a modular structure, adapting to various complex wastewater working conditions. The pump body is available in 304/316L stainless steel and cast iron, matched with a customized sealing system, which effectively resists acid-base corrosion and sediment abrasion, meeting the transportation requirements of high-temperature, high-pressure and high-solid-content industrial wastewater. The pump operates at low speed with minimal shear force on the medium, without damaging the structure of sewage and sludge, featuring pulse-free operation, low vibration and low noise. It has excellent dry-run tolerance to protect the equipment, avoiding jamming, damage and water leakage common in traditional water pumps. With a compact structure, small footprint and flexible horizontal/vertical installation, it is easy to disassemble and maintain without professional tools, greatly reducing operation and maintenance costs. It is the preferred conveying equipment for industrial wastewater treatment, sludge disposal and sewage reuse projects.
Product Features:
1. Anti-clogging & Strong Throughput
Designed with a large flow channel, it can smoothly convey industrial wastewater, sludge and scum containing sediment, fibers and solid particles, completely avoiding clogging and jamming faults, suitable for harsh working conditions with high impurities.
2. Low Shear & Pulsation-free Delivery
The low-speed rotor structure provides extremely low medium shear force, does not damage the sludge floc structure, and delivers stable flow without pulsation, ensuring stable operation of water treatment processes.
3. Strong Self-priming & Dry-run Capability
It realizes self-priming water diversion without pre-filling water, with excellent dry-run protection performance. Short-time dry operation will not damage the equipment, adapting to working conditions such as sump emptying and large liquid level fluctuation.
4. Corrosion & Abrasion Resistance & Wide Adaptability
Customizable multi-material options (stainless steel/cast iron) combined with mechanical seal combinations resist acid-base wastewater, oily wastewater and corrosive chemical media, featuring wear resistance, aging resistance and long service life.
5. Simple Maintenance & Low Operating Cost
The modular split structure is easy to disassemble and assemble. Accessories can be inspected and replaced without disassembling pipelines, with short maintenance time and low cost. The whole machine has low energy consumption and excellent comprehensive use cost.
6. Stable Operation & Low Noise & Vibration
It runs stably with low vibration and noise, supporting 24-hour continuous operation in the factory without frequent shutdowns, ensuring production continuity.
Applications:
1. Industrial Wastewater Treatment: Transportation and lifting of production wastewater, sewage and sludge in chemical, petrochemical, electroplating, papermaking, printing and dyeing, food, pharmaceutical and leather industries;
2. Municipal Water Engineering: Sludge feeding, filter press feeding, sedimentation tank scum suction, rainwater and sewage lifting in urban sewage treatment plants;
3. Solid-liquid Separation Working Conditions: Sludge dewatering, mud transportation, solid-laden wastewater transfer, flotation tank residue-liquid transportation;
4. Special Wastewater Scenarios: Transportation of oily wastewater, acid-base corrosive wastewater, high-viscosity wastewater and gas-liquid mixed wastewater;
5. Other Working Conditions: Factory sump dredging, circulating water transportation, quantitative dosing of water treatment chemicals, ship bilge water treatment.
Performance Parameters:
| Performance | Parameter Range |
| Flow range |
1 ~ 1200 m³/h |
| Pressure range |
0 ~ 1.6 MPa |
| Viscosity range |
≤100000 cp |
| Self-priming height | up to 7.5m |
| Medium temperature |
-10℃ ~ 180℃ (with jacket) |
| Rotor material |
Rubber Lobe:NBR/FKM/EPDM Metal Lobe:CS/SS304/SS316L/2205 |
| Pump casing material |
Cast iron / SS304 / SS316L / Duplex Steel |
| Seal type |
Industrial wastewater special mechanical seal (wear-resistant, anti-corrosion, self-cooling) |
| Drive mode |
Motor + Reducer / Frequency conversion motor + Reducer |



