HST™ turbocompressor                                                      

Magnetic bearings for unbeatable efficiency

The modern and silent HST™ turbocompressor features an advanced design with proven magnetic bearing technology and a high-speed motor driven through a built-in frequency converter. HST turbocompressors are widely used in wastewater treatment plants and in low-pressure industrial processes.

HST turbo blower with magnetic bearing from the side
Main benefits
  • High efficiency, guaranteeing optimal life cycle costs
  • Low noise: no need for additional soundproofing
  • High reliability
  • Wear-free, requiring minimal maintenance 
  • Simple design with integrated components 
  • Accurate flow measurement 
  • Vibration-free, ensuring less stress for pipe work
  • Pulsation-free air distribution allows finer air bubbles for more efficient aeration 
  • Fully certified
  • Operates alongside all types of conventional blowers
  • Numerous possible installation arrangements
  • Operates in a variety of environments
Main applications
  • Aeration for treatment of municipal wastewater
  • Aeration for treatment of industrial wastewater
  • Industrial applications
Main design features

Due to its innovative design, the small-footprint HST turbocompressor has no wearing parts nor lubricants, thus requiring minimal maintenance. The unique drive technology enables optimal operating efficiency with minimized energy consumption. It can operate either as a single turbo blower or as a group of turbo blowers via a number of interface choices, enabling remote or local control of both flow and pressure over the full operating range.

 

HST™ turbo blowers with magnetic bearing in a compressor room at a wastewater treatment plant
Large flow air supply for aeration of wastewater provided by a group of turbo compressors
Key characteristics
Air flow range 1,000 – 16,000 Nm³/h 550 – 10,100 SCFM
Pressure range 30 – 120 kPa 4.4 – 18.1 PSI
Documents

Brochures

Case studies

Data sheets

Case studies
  • Advanced turbocompressor design with proven magnetic bearing technology
    The wastewater treatment plant of Sögel in Germany with approximately 16'000 inhabitants treats domestic and also industrial wastewater from food industry factories. As part of an upgrade, Sulzer delivered five turbocompressors type ABS HST.

  • Fast-track delivery of HST turbocompressor
    The waste disposal company ERZO in Switzerland runs two HST 6000 and four HST 2500 turbocompressors from Sulzer. The latest addition, a new HST 2500 turbocompressor, was a fast-track delivery and offers remarkable savings in energy costs.

  • HST turbocompressors save energy and reduce noise level
    The biological treatment plant of the client's paper mill cleans both the mill’s effluents and the municipal wastewater of the nearby city area. Sulzer’s HST turbocompressors brought significant energy savings and noise reduction to the blower station.

  • Sulzer makes aeration history
    In the high-speed turbocompressor market, Sulzer is the leader in magnetic bearing technology. High-efficiency and maintenance-free turbocompressors replaced the old and energy-intensive positive displacement blowers in wastewater treatment plant in Poland.

  • Reliable treatment process at minimal life cycle-cost
    Sulzer modernized the Kujawy mechanical-biological wastewater treatment plant in Kraków, Poland, with high-tech turbocompressors, agitators, pumps, flowboosters and mixers that guarantee efficiency and process reliability at minimal life cycle-cost.

  • Sulzer's solution cuts operating costs in wastewater treatment
    The turbocompressors cover the whole range of the required air volumes. The precise control and adjustment play a major role in saving energy. According to the calculations of the operator, the investment will be amortized in less than five years.

  • Optimal design of wastewater treatment installation saves energy
    This industrial wastewater treatment plant (IWWTP) is one of the largest in the country. During the past years, the plant has seen a series of upgrades and extensions, including average flow increases and the addition of a tertiary filtration process. As part of the latest upgrade, Sulzer delivered two HST turbocompressors for aeration of the biological basins.

  • Air for efficient aerobic biological treatment
    Norske Skog Boyer Mill in Tasmania is a TMP newsprint mill that has produced paper continuously since 1949. A wastewater treatment plant comprising a central moving bed bioreactor (MBBR) and outer activated sludge tank (AST) treats up to 25’000 m³/d of process effluent. Four sets of HST™ turbocompressors play an essential role in the supply of air for efficient aerobic biological treatment. The compressors feed ine subermersible OKI aerator mixers in the AST and the aeration grid in the MBBR.
Applications
  • Aerobic digestion
    In aerobic digestion in wastewater treatment, microorganisms continue to break down the organic material. These microorganisms need aeration in order to function, and some level of mixing is required to keep the process efficient and reliable. The result is reduced sludge volume and the prevention of odor. Sulzer has highly suitable products such as compressors, aerators and disc diffuser systems to support the process in the aerobic digester tank.

  • Biological process
    The target of the biological process in wastewater treatment is to remove organic, biodegradable substances via the metabolism of microorganisms and related biochemical processes.

  • Industrial water and effluent treatment
    Sulzer has a deep knowledge in wastewater treatment, and with our wide product portfolio we can now offer energy-efficient and reliable solutions for your water collection, neutralization, flocculation, sedimentation, cooling, aeration, sludge storage, digestion, and dewatering processes.

  • Municipal clean water treatment
    When planning new water treatment plants or upgrading existing ones, operating costs are as important as investment costs. Sulzer’s innovative pumps, mixers and compressors combine reliable treatment performance with superior energy efficiency.

  • Tertiary treatment
    Treated wastewater may occasionally require further treatment. Local discharge rules may pose strict limits that cannot be fulfilled by even the most effective process, or a higher quality of effluent may be requested for its reuse. When tertiary treatment is needed, various levels of filtration can be applied, including very fine filtration. Often, however, a final step of mixing and aeration is sufficient to achieve the target. When this is the case, Sulzer's submersible mixer types ABS XRW and RW can be used, along with submersible aerator type ABS TA–TAK and disc diffuser system types ABS PIK, DS and Sucoflow.
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Operational Excellence with Sulzer's HST™ Turbocompressors