Mini Three-Lobe Roots Vacuum Blower for Wastewater Aeration 1

Mini Three-Lobe Roots Vacuum Blower for Wastewater Aeration 2

Mini Three-Lobe Roots Vacuum Blower for Wastewater Aeration 3

Mini Three-Lobe Roots Vacuum Blower for Wastewater Aeration 4

Mini Three-Lobe Roots Vacuum Blower for Wastewater Aeration 5

Mini Three-Lobe Roots Vacuum Blower for Wastewater Aeration 6

Mini Three-Lobe Roots Vacuum Blower for Wastewater Aeration

Picture a compact powerhouse — the Mini Three-Lobe Roots Vacuum Blower — that gives wastewater a steady, life-giving breath with quiet, confident pulses. At the break of day in the plant it hums like a calm engine, sending fine bubbles that lift and clear water with smooth, steady force. Tough, low-noise, and easy to fit, it saves energy and wins peace of mind while turning hard work into bright, clean results.

brand name:

QILEE

model number:

PRB-40

Shipping:

Support Sea freight

Payments:

L/C,D/A,D/P,T/T,Western Union,MoneyGram,OA

Place of Origin:

China

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External Dimensions(mm)

473*741

Caliber(mm)

Rotary Speed(RPM)

850

La(KW)

0.42

Pressure(mmAq)

1000

QS(m3/min)

1.02

rated power

1.1~1.3

rated voltage

220V/380V

type

Roots Blower

pressure

Medium Pressure

power source

Pneumatic

application

Industrial Blower

Product name

roots blower

place of origin

Shanghai, China

Compact Rugged Precision Aeration

The Mini Three-Lobe Roots Blower delivers efficient, oil-free aeration for wastewater treatment with precision-balanced rotors and low-noise operation, ensuring reliable oxygen transfer and long service life. Its compact three-lobe shape and robust, standardized construction provide stable capacity across varying pressures, high efficiency from specialized rotor profiling, and simplified maintenance for continuous plant operation. Supplied in standard export cartons with 3–20 day delivery and backed by strict quality control, this Roots Blower offers easy installation, consistent performance, and dependable after-sales support.

Here are six 4-word subtitle options:

The Mini Three-Lobe Roots Blower is a compact displacement blower for wastewater aeration that delivers oil-free air with adjustable pressure and capacity (outlet sizes 40–300 mm, flow roughly 0.6–160 m3/min and single-stage pressure up to ~0.8 kgf/cm2), ensuring steady delivery across operating ranges. It creates value through high efficiency, low vibration and noise, low maintenance and long service life, offering reliable, standardized aeration performance for municipal and industrial sewage treatment. The three-lobe counter-rotating impellers, tight clearances and precision four-shaft rotor machining give a simple, balanced structure that produces stable compression, minimal pulsation and trouble-free operation.

Mini Roots Aeration Blower

The Mini Three-Lobe Vacuum Blower is a compact Roots Blower engineered for wastewater aeration, delivering oil-free air with capacities from 0.6 to 160 m3/min and outlet sizes of 40–300 mm. Its two counter-rotating impellers provide positive displacement and adjustable pressure up to 0.8 kgf/cm2 (8000 mmAq) while maintaining low noise and vibration through precision balancing and advanced rotor machining. With a simple, standardized design for long service life and fast delivery from Shanghai QILEE, it is ideal for municipal and industrial sewage treatment applications.

◎ Reliable Oil-Free Air

◎ Low Oscillation Noise

◎ Durable Robust Design

Compact Efficient Quiet Reliable

From a heritage engineering brand, this mini three-lobe Roots Blower for wastewater aeration is crafted with precision-machined rotors and optimized profiles to deliver stable, continuous airflow in a compact footprint. It performs efficient aeration and vacuuming with low pulsation, high volumetric efficiency, low noise, and corrosion-resistant construction for reliable operation in harsh wastewater environments. Key features include balanced three-lobe rotors, oil-free operation, simple modular maintenance, and variable-speed compatibility, providing energy savings, reduced downtime, and long-term performance.

Material introduction

This Roots Blower features a robust cast-iron housing and precision-machined three-lobe rotors made from alloy steel using advanced four-shaft processing to ensure tight tolerances and long service life. The design delivers oil-free air via accurate clearances and high-quality bearings and seals, with surface treatments that reduce wear, vibration, and noise. Corrosion-resistant coatings and optional stainless-steel wetted components make the mini blower well suited for wastewater aeration and harsh municipal environments.

◎ material introduction 1

◎ material introduction 2

◎ material introduction 3

FAQ

What is the Mini Three-Lobe Roots Vacuum Blower used for in wastewater aeration?

It is a compact positive-displacement blower commonly used to supply air to aeration systems in wastewater treatment — for activated sludge tanks, SBRs, MBBR units, aerated lagoons, and fine-bubble diffuser networks. Its steady volumetric flow at set speed makes it suitable for maintaining DO (dissolved oxygen) levels and supporting biological treatment processes.

How do I integrate this blower into an aeration system (piping, diffusers, controls)?

Install the blower on a firm, level base and connect to the air header/manifold using flexible connectors to reduce vibration transfer. Fit an inlet filter/silencer and a discharge silencer, plus a non-return (check) valve and a pressure relief/safety valve on the discharge line. For process control and energy savings, use a VFD or inlet throttling and implement pressure/flow sensors tied to the plant control system to maintain DO targets at the diffusers.

What regular maintenance does the mini three-lobe Roots blower require in wastewater service?

Typical maintenance includes periodic inspection of inlet filters and silencers, draining any condensate traps, checking for air leaks in piping and connections, monitoring bearing and gear oil levels and changing oil per the manufacturer’s interval, checking coupling/belt/timing gear alignment, and watching vibration/temperature trends. Frequency depends on operating hours and site conditions; follow the product manual for exact intervals.

Can this blower handle wet or odorous gases from wastewater (H2S, aerosols, entrained water)?

It is designed for clean, non-abrasive air. Small amounts of moisture and aerosols are common in wastewater aeration but excessive liquid carryover, abrasive particles, or highly corrosive gases (e.g., high H2S concentrations) will shorten service life. Use upstream condensate separators, corrosion-resistant coatings or materials, and consider a gas scrubber or alternative blower materials if gas composition is aggressive. Always consult the blower datasheet for material compatibility.

How can I maximize energy efficiency and control airflow with these blowers?

Use variable frequency drives (VFDs) to match blower speed to DO demand — that gives the best energy savings for positive-displacement blowers. Stage multiple blowers in parallel for better turndown and reliability (run the minimum number needed). Keep piping short and sized correctly to reduce pressure losses, maintain clean inlet filters, and avoid unnecessary backpressure. Regular preventive maintenance (lubrication, seals, alignment) also preserves efficiency.

What are common problems in operation and how do I troubleshoot them safely?

Common issues: reduced flow (dirty inlet filter, leaks, worn lobes), overheating (blocked discharge, low oil), excessive noise/vibration (misalignment, loose mounts, bearings), and pulsation issues (insufficient silencing or piping resonance). Troubleshoot by isolating the blower, verifying inlet/discharge blockages, checking oil level and temperature, inspecting mounts and couplings, and monitoring vibration signatures. Always follow lockout/tagout procedures, relieve pressure before servicing, and consult the manufacturer for repairs beyond basic checks.

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