我们为该行业提供的设备
磁悬浮鼓风机
叶轮悬浮在磁场上。37 至 350 kW，没有会磨损的轴承。
- 容积流量（FAD）
- 25.0 – 388.0 m³/min
- 电机功率
- 37 – 350 kW
变频无油涡轮鼓风机
用于连续曝气工况的高效涡轮鼓风机。
- 容积流量（FAD）
- 32.0 – 135.0 m³/min
- 工作压力
- 1 – 1 bar g
- 电机功率
- 50 – 200 kW
无油螺杆鼓风机
在鼓风机压力段用螺杆压缩。最高 1.5 bar g，22 至 180 kW。
- 容积流量（FAD）
- 15.0 – 98.0 m³/min
- 电机功率
- 22 – 180 kW
单级离心鼓风机
用于曝气和干燥的大流量、低压空气。
- 容积流量（FAD）
- 12.6 – 160.0 m³/min
- 工作压力
- 1,100 bar g
- 电机功率
- 22 – 250 kW
空气悬浮鼓风机
用空气轴承代替磁悬浮。22 至 450 kW，无油且安静。
- 容积流量（FAD）
- 17.0 – 418.0 m³/min
- 电机功率
- 22 – 450 kW
- 重量
- 525 – 2,550 kg
水润滑无油空压机
用水代替油来密封和冷却转子。Class 0 空气，5.5 至 160 kW。
- 容积流量（FAD）
- 0.3 – 27.0 m³/min
- 工作压力
- 7 – 10 bar g
- 电机功率
- 6 – 160 kW
变频螺杆空压机
电机跟着用气量走。7.5 至 280 kW，8 至 13 bar g。
- 容积流量（FAD）
- 0.3 – 50.0 m³/min
- 工作压力
- 8 – 13 bar g
- 电机功率
- 8 – 280 kW
储气罐与储罐
0.3 至 6 m³，碳钢罐与真空罐。8、10 与 13 bar g。
- 工作压力
- 1 – 13 bar g
- 重量
- 99 – 1,240 kg
概述
On most treatment works the blowers draw more electricity than everything else on the site put together. They run every hour of every day, they are sized on a design case that may arrive twice a year, and between those two facts sits the largest controllable cost the works has.
The machine matters less than what it is asked to do. A blower that follows the oxygen demand costs a fraction of one that is sized for the peak and throttled or blown off for the rest of the year. Getting that right is worth more than any single equipment choice on the plant.
主要优势
Aeration is where the bill is
Typically half or more of a works' electricity goes through the blowers, so a saving here is larger than anything else available.
Follows the oxygen demand
Speed control across the range rather than throttling the inlet or blowing air away that has already been paid for.
No oil near the water
Nothing to reach an aeration basin or a sludge stream, and no oily condensate to account for.
为连续运行而造
These machines never stop, so service access and spares availability decide the whole-life cost, not the purchase price.
Where the electricity goes
Aeration is usually between half and two thirds of the electricity a treatment works consumes. Everything else — pumps, screens, dewatering, lighting, the building — shares what is left.
The reason it costs so much is that the blower has to push air to the bottom of the basin against the head of water above the diffusers, continuously, whether the incoming load justifies it or not. A works sized for a design flow that arrives on a wet Tuesday in February spends the rest of the year making more air than it needs.
That is why dissolved oxygen control pays for itself faster than almost anything else on a treatment plant. Measuring the oxygen in the basin and letting the blower speed answer it turns a fixed cost into a variable one.
- Half to two thirds of site electricity
- Runs every hour of the year
- Sized on a peak that rarely arrives
- Dissolved oxygen control pays quickly
- Speed control beats throttling
- Blowing off is paying twice
- Diffuser condition changes the duty
- Standby strategy affects the bill
What a blower has to survive here
The air a blower draws on a treatment works is humid, and on the sludge side it carries hydrogen sulphide. Both shorten the life of anything they touch, and both are worth designing around rather than discovering.
Ambient temperature matters more than people expect. A blower house that reaches 50 °C in summer derates every machine in it, and a machine chosen on the catalogue figure will be short of air exactly when the process needs it most.
Then there is the plain fact that these machines do not stop. A compressor in a factory has nights and weekends; an aeration blower has neither. Service access, spares on the shelf and a standby arrangement are not refinements here, they are the specification.
- Humid intake air as standard
- Hydrogen sulphide on the sludge side
- Blower houses run hot in summer
- Derating checked at site temperature
- Continuous duty, no natural downtime
- Standby machine or N+1 arrangement
- Service access designed in
- Spares held locally, not shipped
Choosing between the blower types
A roots or lobe blower is simple, cheap to buy and the least efficient of the options. On a small works with a flat load it can still be the right answer, and we will say so.
A screw blower is more efficient than a roots machine and tolerates a wide pressure range. It has a gearbox and an oil system, which means a service schedule and a contamination risk to manage, but it is a sound choice on mid sized plant.
A turbo or magnetic levitation machine is the most efficient of the three and has neither gearbox nor oil. On a works where the blowers run all year the difference in electricity usually outweighs the difference in price within a few years — but on a small or intermittent duty it may not, and that is a calculation rather than an opinion.
- Roots or lobe: simplest, least efficient
- Screw: efficient, has oil and a gearbox
- Turbo and maglev: most efficient, no oil
- Payback depends on running hours
- Turndown range decides part load cost
- Noise matters in a populated area
- Footprint matters in a retrofit
- We size against your actual duty
常见问题
How much of our electricity is really the blowers?
On most treatment works, between half and two thirds. It is worth metering rather than assuming, because the answer decides whether an aeration project is the first thing you do or the fifth.
Do we need magnetic levitation, or is a screw blower enough?
It depends on running hours and turndown. Where the blowers run continuously the efficiency difference usually pays for itself; on a small works with an intermittent duty it often does not. We work it out against your figures rather than recommending by default.
What about hydrogen sulphide on the sludge side?
It is corrosive and it finds its way into the intake. We specify the intake position and the filtration around it, and on a sludge duty we will say where materials need to change.
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