Since 2005Service across 20+ citiesNWC approvedSpares held in stockJeddah · Riyadh · Dammam
01
Aeration runs continuously — so must the blower.
Aeration is usually the largest single load in a treatment plant, and it doesn’t get to stop. A blower failure isn’t an inconvenience, it’s a compliance problem: dissolved oxygen falls, the biological process suffers, and recovery takes far longer than the repair.
We size blowers against the actual duty rather than a catalogue figure, and we keep the wear parts available.
02
Approved by the National Water Company.
The Huadong blowers we supply are on the National Water Company’s approved materials list for sewage treatment equipment, and ALHA is the registered local representative. That is the approval contractors are asked for on NWC projects — so it is settled before you submit, not chased afterwards.
We send a copy of the certificate with every quotation. As with all NWC-approved equipment, each unit is third-party tested against the project specification before installation.
Material Approval Certificate
National Water Company (NWC)
شهادة اعتماد المواد شركة المياه الوطنية
ManufacturerShandong Huadong Blower Co., Ltd
Approved forAir blowers and air compressors — sewage treatment equipment
Certificate no.2025-49666-01
ValidNovember 2025 to November 2027
Local representativeALHA — Alhawaiya for Industrial Solutions
Which one is right depends on flow, discharge pressure, how much the load varies through the day, and what you’re prepared to spend on running cost versus capital.
Roots (positive displacement)Robust, proven, tolerant of varying discharge pressure — the workhorse for many plants.
Magnetic centrifugalHigh efficiency across a turndown range where load swings through the day.
AncillariesSilencers, filters, valves and pneumatic control.
04
Sizing, supply and support.
Send us the process data — flow, tank depth, required dissolved oxygen, diffuser type — and we’ll come back with a sized proposal rather than a price list.
Our engineers cover more than 20 cities, and consumables ship nationwide from Jeddah. We also maintain blowers and compressors from other suppliers, so an existing plant doesn’t need to be re-equipped to be properly supported.
01Flow
02Tank depth
03Dissolved oxygen
04Diffuser type
05
Why water contractors choose ALHA.
Sizing done against the process duty, not a generic catalogue selection
Three blower technologies available, so the recommendation isn’t forced by what we happen to stock
Service coverage across more than 20 cities for plants outside the main centres
Spares and consumables held, so planned maintenance is actually plannable
Independent, locally owned, and answering in Arabic and English since 2005
06
Common questions.
We work from process data — air flow required, tank depth, target dissolved oxygen and diffuser type — rather than compressor-style rules of thumb. Send those figures and we’ll size it.
Yes. Shandong Huadong Blower Co. is NWC-approved for air blowers and air compressors in sewage treatment (Material Approval Certificate 2025-49666-01, valid November 2025 to November 2027), and ALHA is the registered local representative. We include a copy of the certificate with every quotation. As NWC requires, each unit is third-party tested against the project specification before installation.
A Roots blower is positive displacement: robust, forgiving of pressure variation, lower capital cost. A turbo blower is oil-free with a lower running cost and less maintenance, and suits high continuous flows. Which wins depends on your load profile.
Yes — aeration duty in municipal and industrial wastewater treatment is one of the main applications we supply.
Yes. Our service work isn’t limited to equipment we supplied.
Yes — filters, silencer parts and wear components are held and shipped nationwide from our Jeddah warehouse.
Because the machine is the easy part. What decides whether it keeps running is how fast someone answers when it stops, whether the spare is on a shelf in the Kingdom, and whether the engineer who arrives has seen your model before. We are here, we hold stock, and we answer the same day.
Send us the duty and we’ll size the blower.
One reply, from a person, usually the same day.
Sized from process data, not a catalogue guess
NWC-approved blowers — certificate copy with every quotation
