
Contaminated, hard-to-treat wastewater
For wastewater containing chemicals or contaminants that cannot be discharged directly.
All of Our Products & Services
Wastewater Treatment System General Wastewater Treatment
Sludge Treatment System Sludge Dewatering & Drying
Evaporation & ZLD System Evaporation & Zero Liquid Discharge
Preliminary & Primary Wastewater Treatment Preliminary & Primary Treatment
Membrane Filtration System Advanced Wastewater Treatment
Water Reuse & Recycling System Water Reuse & Recycling Hydrosys designs and installs complete water reuse & recycling systems that turn effluent back into a usable resource. Our BOT model needs no machinery investment and cuts water costs.
Water is critical to every production process, and the more you use, the higher your costs. Yet large volumes of treated wastewater are discharged when they could be reused.
Hydrosys brings treated water back into use with reuse & recycling systems designed around your water quality and applications, cutting water and production costs.
A water recycling system turns your effluent into a resource you can use again.
Reuse treated water in production to cut operating costs, reduce reliance on outside water, and lower long-term shortage risk.
Cut plant effluent, support Zero Liquid Discharge (ZLD), and meet corporate ESG targets while strengthening your sustainability profile.
Hydrosys turns wastewater into an asset with advanced technology and a cost-effective business model, with no investment of your own.
Safely reuse water in production-support processes and cut the risk of substandard raw water.
Buy outright, or choose our BOT model where we handle investment, design, and installation.
Charges follow actual water use, cutting costs versus your existing source.
Our PM team and stocked spare parts mean immediate maintenance, so treatment never stops.
Water recycling works across all industries, with the best return for plants that use a lot of water or face high water costs.
Where water can’t be bought at any price, recycling lets your plant make its own and keep running.
Where rates are high, recycling costs less than buying fresh tap water, making savings clear.
The more water you use, the greater the payoff. Recycling even 50% of your wastewater halves your tap-water purchases.
Free Wastewater Testing
Plus Backup Equipment Rental
Send a wastewater sample for free lab testing and we will match the right equipment. Rental units keep your system running during maintenance.
Hydrosys offers water recycling systems under a BOT model (Build-Operate-Transfer). Use the system right away while we fund construction and manage the operation.
Talk to UsWe fund and install all the machinery for you (Zero CAPEX).
Service fees are metered by water volume, at rates that beat tap water.
A professional Hydrosys team stays on site, monitoring the system around the clock.
At the end of the contract, full ownership transfers to you at no extra investment.
Water quality and volume are guaranteed under contract, with continuous monitoring.
Major industries trust Hydrosys to transform their wastewater management, achieving 100% water reuse under agreements that guarantee commercial value.
Water recycled
100K
cubic metres successfully treated
Operating experience
20
years managing water treatment systems
Customer investment
0.-
baht, we fund 100% of the system
We manage every step, from wastewater analysis and system design to production, installation, and commissioning by specialist engineers.
Tell us your on-site problem and get an initial consultation and system assessment from our engineers.
We analyze your plant’s wastewater in the lab to select the most suitable treatment method.
We design the system and select equipment to match your wastewater characteristics.
We calculate costs and prepare a quotation with full specifications for your review.
Once design and price are agreed, sign the contract and place the order. Production then begins.
When production is complete, we deliver the machinery to your site.
Covered throughout the warranty period, typically one year or as contracted. Our team is ready to help right away.
For over 30 years, industrial plants across many sectors have trusted Hydrosys to design, install, and maintain efficient, cost-effective wastewater treatment systems.


Hydrosys designs, manufactures, and supplies end-to-end water treatment systems for a wide range of wastewater challenges, keeping water management cost-effective.

For wastewater containing chemicals or contaminants that cannot be discharged directly.

If BOD, COD, or TSS levels still exceed the limits, an advanced treatment system can boost performance.

Reduce sludge volume, plus hauling and disposal costs, with sludge dewatering and drying systems.

Screens out solids, grease, and suspended matter before the main system, reducing clogging and easing the load on your primary equipment.
About our wastewater treatment
systems and related equipment
Cooling towers, boilers, cleaning and washing, and the plant’s support systems (not for direct food-contact applications).
Yes — with our BOT service there is no investment on your side. We fund, install, and operate the system, and you pay according to usage.
No. Water entering the recycling system must already be treated to effluent standard, both to protect the system from damage and to keep it working efficiently.
Treated water goes back into the production process, which lowers water costs and improves resource efficiency over the long term.
There are two options: buy the system or machinery outright, or renew the contract and let us keep operating and managing it for you.