HydroThane STP bv
About
HydroThane STP bv, headquartered in 's-Hertogenbosch, Netherlands and founded in 2008, designs and constructs biological wastewater treatment and biogas purification systems for industrial clients worldwide. Acquired by Axens in 2022, the company draws on over 35 years of founding team experience across brewery, food, chemical, pulp and paper, bio-ethanol, and dairy sectors. Their anaerobic reactor portfolio includes the ECSB (Expanded Granular Sludge Bed) high-rate reactor, the UASB upflow sludge blanket reactor, the HYDRAMMOX anammox nitrogen removal process, and the SWD variant for specialized industrial streams. Aerobic polishing is handled by the HYDROX process. On the biogas side, the BCSP biological-chemical desulfurization system removes H₂S with minimal chemical consumption, complemented by the CSP chemical scrubber, biogas flares, and biogas storage, boosting, and drying packages. HydroThane also supplies laboratory testing, pilot installations, nutrient blends (PowerMix), granular biomass seed, consulting, commissioning assistance, operator training, and refurbishment of aging anaerobic reactors. The company provides full-contracting services spanning process design, civil construction, electromechanical installation, and plant operation.
Key Products
Expanded Granular Sludge Bed anaerobic reactor for high-rate biological treatment of industrial effluents across diverse industries
Upflow Anaerobic Sludge Blanket reactor, the most commonly applied anaerobic technology for biological treatment of industrial wastewater
Anammox-based nitrogen removal process for efficient ammonium reduction in wastewater
Anaerobic treatment technology variant for specific industrial wastewater applications
Aerobic treatment process for biological oxidation of remaining COD after anaerobic pre-treatment
Biological-chemical desulfurization system that removes hydrogen sulfide from biogas with minimal chemical use
Chemical desulfurization and gas purification system for biogas treatment
Safety flare system for controlled combustion of excess biogas
Equipment for storing, pressurizing, and dehumidifying biogas prior to utilization in engines or boilers
On-site and off-site analytical testing of wastewater and biogas samples to characterize treatability
Temporary treatment units deployed on-site to validate process design before full-scale investment
Supply of specialized nutrient blends (e.g., PowerMix) to support biological process performance
Supply of seed granular anaerobic sludge to start up or re-seed anaerobic reactors
Expert advisory services for diagnosing and resolving operational problems in biological treatment systems
On-site support during startup of anaerobic and aerobic treatment plants
Operational training programs for plant operators and maintenance staff
Modernization and efficiency improvement of aging anaerobic treatment systems to extend reactor life and reduce maintenance
Full project management and on-site coordination for treatment plant construction
Process engineering and conceptual design for wastewater and biogas treatment systems
Sourcing and supply of equipment and materials for treatment plant construction
Construction of reactor tanks, basins, and civil structures for treatment facilities
Installation of electrical and mechanical systems including pumps, blowers, piping, and control panels
Operational management services for running wastewater and biogas treatment plants on behalf of clients
Is this your company?
Claim this listing to update your information and feature your products.
Do you know where your next client is? We do.
Violations, consent orders, full historical DMR data, plant details and rankings for every regulated facility — searchable with a smart AI interface.
