Why is the wastewater treatment plant STMH and STM® stable, efficient and therefore maintenance-free?

The only modern three-stage cleaning ...

Company Hellstein spol. s ro, incorporated under the company Stähler Erfindungen to Stählergruppe group of companies, engaged in the development and production of technologies for wastewater treatment over 30 years. During this period we completed together thousands of wastewater treatment plants around the world.

Our main products include wastewater treatment plant type STMH and container cleaning STM®. These purifiers utilize only one in the Czech Republic, maintenance-free three-stage cleaning system.

Why choose a three-step solution to wastewater treatment ?

Wastewater Treatment Plant life of its own . Always life needs two components , oxygen and balanced supply of substances contained in waste water, such as " food " for cleaning micro-organisms , the absence of toxic substances and good settling activated sludge .

The first stage of cleaning is always use pre sump. In this basin there are anaerobic pre-treatment (microorganisms without air) , to balance the uneven inlets of objects ( vacation , visit , etc. ) , dilution and evaporation of detergents and separation of non-biodegradable substances. If this first step we remove the risk of overloading the plant or vice versa starvation microorganisms. It can also cause the destruction of microorganisms due to detergents . Also, there will be establishment of non-degradable substances as required for sufficient 1x 1 - 5years export a larger municipal treatment plant.

The second level of cleaning is cleaning of aerobic microorganisms in suspension ( slurry) as in most conventional single stage wastewater but with the difference that the activated sludge settles better ( easily be separated from the treated water ) .

The third stage cleaning is aerobic purification sessile microorganisms on solid support biomass (cell cycling - biokontaktoru ) , similarly to the gas filter, but with the advantage that the carrier body does not clog - nekolmatuje . The third degree and preferably provides for what is always the most valuable sewage , activated sludge settling well . Activated sludge is a dense , pure bordered flakes , has excellent separation properties (low sludge index) , allows the correct certification of wastewater , which is a prerequisite for proper approval , ease of operation and subsequent inter alia, obtaining subsidies from the municipality.


Our membership in important associations :

Membership in the Association of Wastewater Treatment Experts , we always offer high quality , fully professional and especially correct solution in accordance with the current , eventually . prepared legislation Czech Republic.

Water Association of the Czech Republic - CzWA - CzWA brings together professionals , companies and institutions with the main objective of achieving effective and sustainable development in all areas of water management and protection of the aquatic environment .

Small domestic cleaners and separators - OS - CaO - CZWA - The Group contributes to the development of standards and regulations , their mutual harmonization and alignment with EU legislation in preparation and education experts in their spirit. The main aim of the group is to assist with the preparation and dissemination of information legislation in this part of the water .

Municipal wastewater treatment plants - small WWTP OS - Group brings together experts from different professions involved in the treatment of urban waste water . Among the members of such groups are represented in addition to wastewater operators and designers, individual and complex wastewater and also researchers from universities.

The main advantages of a wastewater treatment plant STMH

  • completely maintenance-free operation
  • high cleaning efficiency
  • high stability cleaning
  • low operating costs
  • odor, noise
  • life of 30-50years (stainless steel, plastic)

Using a wastewater treatment plant STMH

  • Villas
  • apartment buildings
  • townhouses
  • cottages with occasional traffic
  • small establishments, trade
  • hostels, family hotels, pensions
  • small campgrounds, camping
  • garden restaurant
  • mountain resort with occasional traffic

Where there was a wastewater treatment plant STMH works

  • Czech Republic - over 150 realizations
  • Germany - over 600 realizations
  • Ireland, France - over 300 realizations
  • Poland - over 200 realizations
  • America - over 250 realizations
  • Brazil, Mexico - over 250 realizations
  • Russia, Taiwan, China - over 100 realizations