International market
2026-10-21Introduction: UK water treatment technology company Bluewater Bio obtained a contract on 2026年10月 to provide upgrade and capacity expansion for the industrial wastewater treatment plant at Saudi Arabia's MODON Jeddah 1st Industrial City. Treatment capacity will increase from 25 million liters/day to 40 million liters/day, an increase of 60%; the project is part of a 20年 ROT (Rehabilitate-Operate-Transfer) concession package, equipped with 14 SMART units and 6 FilterClear tertiary filtration systems, capable of producing 24 million liters/day of reuse feed water.
Capacity Expansion Demand Driven by 1100 Factories
Jeddah First Industrial City is one of the large industrial parks operated by the Saudi Industrial Property Authority (MODON), hosting more than 1100 factories. The direct reason for this expansion is stated plainly: industrial growth has caused both wastewater flow and pollution load to exceed the plant's original design capacity.
Behind this statement lies a fundamental difference between industrial wastewater and domestic sewage. While the volume and quality of domestic sewage fluctuate throughout the year, they generally follow relatively stable domestic patterns; industrial wastewater is entirely different — when the product mix changes, water quality changes; when orders rise, water volume rises. The more successful the park's investment promotion, the more likely the wastewater treatment facility becomes the first piece of infrastructure to be overwhelmed.
Therefore, wastewater treatment plants in industrial parks must build in flexibility at the design stage. But the reality is that many parks set their scale based on the investment situation at the time of construction, and only when the industry fills up do they discover that the space for expansion has been locked in by surrounding land use. This is why this project chose a technical route that can "increase capacity without building new structures."
HYBACS: Fitting Capacity Expansion into Existing Tanks
The core of this technology package is 14 SMART units, which carry Bluewater Bio's HYBACS biological treatment process. The supplier's rationale for selection is: HYBACS can achieve significant enhancement of biological treatment capacity without building large new civil structures.
The technical key to this route is "moving" biomass onto media. Conventional Activated Sludge processes rely on the suspended sludge concentration in the tank, and increasing treatment capacity requires increasing tank volume; processes like HYBACS, however, add suspended carriers or fixed-bed media, allowing microorganisms to attach to the media surface and form biofilms, thereby fitting more active biomass into the same tank volume — equivalent to doubling the treatment volume without requiring additional land acquisition or new concrete pouring.
Complementing this are 6 FilterClear tertiary filtration systems, producing 24 million liters/day of tertiary treated water, directly serving as feed water for the Reverse Osmosis (RO) system. This step captures the value of the entire project — the filtered water undergoes further desalination through RO to become reuse water that the industrial park can truly utilize.
There is a notable ratio here: 24 MLD of tertiary treated water, relative to the total treatment scale of 40 MLD, achieves a reuse rate of 60%. For a park located in an arid Gulf region serving thousands of factories, this reuse rate means that for every 10 portions of wastewater discharged, 6 portions return to the production cycle.
20年 ROT: The Mainstream Business Model for Middle East Water
The overall framework adopted for the project is a 20年 ROT concession awarded by MODON to Miahona, with SUECO serving as EPC contractor and Bluewater Bio embedded as technology supplier.
ROT (Rehabilitate-Operate-Transfer) differs from the common BOT in that its starting point is already-built existing assets. The concessionaire does not take over a blank slate, but an old plant that is already operating and can no longer meet demand. This brings two requirements:
- Renovation cannot stop water supply or shut down operations — the production wastewater from 1100 factories in the industrial park must be continuously treated. This project is explicitly designed to keep the water plant running during construction, avoiding disruption to industrial users;
- Operational capability must be bundled with renovation capability — the 20年 term means that renovation investment must be recovered through long-term operational revenue. The concessionaire must possess both engineering judgment and O&M capability; otherwise, the money saved on renovation will be paid back double during the operational period.
For equipment and technology suppliers, the ROT model changes the sales logic. The customer is no longer a "one-time payment owner" but "an operator who needs to earn 20年 from this plant." Suppliers' quotations are no longer about being as cheap as possible, but must be convertible into the 20年 energy consumption, chemical consumption, membrane replacement, labor and downtime losses. This also explains why this project ultimately chose the combination of "biological capacity upgrade + low-maintenance filtration" — what it saves is operating cost, not just construction cost.
Three Opportunity Lines in the Gulf Industrial Water Market
Looking outward from the Jeddah project, the Gulf region's industrial water market is presenting three clear opportunity lines.
- Upgrading of existing assets — a large number of industrial wastewater facilities in the Middle East were built during rapid capacity expansion periods, and their design is now disconnected from current loads. Demand for existing asset renovation will continue to be released; the ROT model is a financial instrument tailor-made for such assets;
- Reuse closed loop — Gulf countries are extremely dependent on seawater desalination for fresh water, and the economics of industrial reclaimed water are improving. When the full cost of reclaimed water falls below that of desalinated water, industrial parks will have an intrinsic incentive to build reuse systems, and RO and tertiary filtration will become standard configurations;
- Localization substitution — Saudi Arabia's "2030 Vision" explicitly requires increasing the localization rate. Local manufacturing of technology and equipment and the cultivation of local O&M teams are becoming part of the bidding conditions.
For Chinese environmental protection enterprises, the intersection of these three lines is the entry point. Chinese companies already possess mature engineering experience in fields such as suspended carriers and biofilm processes, MBR and ultrafiltration membrane materials, and zero liquid discharge and salt separation crystallization for industrial wastewater, and their cost control capability has a clear advantage among comparable technologies. The shortcomings lie in localization qualifications, long-term operational track records, and performance endorsements under the European standards system. Embedding as a technology supplier into an international concession consortium is a relatively risk-controllable entry approach — it avoids bearing the capital risk of the concession while still obtaining genuine overseas track records.
Timeline and Follow-up Observation Points
The project is expected to be completed in Q3 2027年. From a timeline perspective, several milestones are worth continuously tracking: first, whether the non-stop production conversion plan during construction can be executed as scheduled; second, the actual biofilm activity and treatment efficiency of the HYBACS unit under high-temperature Gulf conditions; third, the membrane fouling rate and cleaning cycle after the 24 MLD tertiary treated water enters the RO system — the water quality variability of industrial wastewater is far higher than that of municipal sewage, and this is often where RO systems are most prone to problems in actual operation.
If all three challenges are overcome, this "biological capacity upgrade + filtration + RO" combination is very likely to be replicated in other industrial cities within the MODON system. There are dozens of industrial parks of varying scales in the Gulf region, and the structural problems they face are highly similar: land constraints, exceeding load limits, expensive fresh water, and increasingly stringent discharge standards.
Conclusion
From 25 to 40 MLD, the numbers are not astonishing; what is truly informative is the three choices behind it: trading biofilm media for tank volume, trading 20年 concession for capital, and trading 60% reuse rate for fresh water. This is a standardized solution prepared for industrial parks that are "already fully built but still need to keep growing." For Chinese water enterprises going overseas, Jeddah First Industrial City provides a concrete and complete sample — it demonstrates that in the Middle East market, the winner is not the one with the lowest bid, but the one that can embed technology into the 20年 operating ledger.
About TIANYI TECH: TIANYI TECH (TIANYI LIMITED) focuses on the fields of wastewater treatment, reclaimed water reuse, and water environment governance, providing municipal and industrial clients with full-chain services including process design, equipment integration, engineering general contracting, and smart operations. The company continuously tracks global water treatment policies, technologies, and market dynamics, and is committed to helping clients achieve efficient utilization and sustainable management of water resources through reliable solutions. For more information, please visit the company website at www.tianyitech.hk.
Source: Filtration+Separation "Bluewater Bio wins Saudi Arabian wastewater upgrade contract" (2026年10月), compiled based on publicly available contract information.
