Low-maintenance and fully biological waste water treatment with Roth MicroStar TB small sewage plant
Dautphetal/Bischofswerda. The Buchenau-based Roth Werke provides fully biological small sewage plants for regions that are not connected to public waste water systems. The range includes the Roth MicroStar TB small sewage plant, which the manufacturer produces in its Roth Umwelttechnik factory in Bischofswerda.
The system is based on the sequential stabilising activated sludge system (SSB process) with ventilated primary settling and sludge stabilisation.
This means the small sewage plant does not cause any odour problems and hardly produces any sludge, which reduces operating costs enormously. The Roth Twinbloc low-profile storage unit is an integral part of the system as a whole. Its tank geometry with two connected chambers ensures a high level of ground stability. The moulded carrying handles on the tank make it easy to handle. The low tank height of 1.35 metres allows for easy installation using a mini-excavator. Roth provides package solutions which are pre-assembled and ready to install, with a sampling shaft integrated into the tank, for residential buildings with up to twelve inhabitants. The small sewage plants are mostly used in rural areas where a public channel connection is not available.
How the system works
The domestic waste water passes into the first chamber in the system. There, the biological treatment begins immediately by ventilating the waste water. Microorganisms in the activated sludge break down the organic compounds. Further biological treatment of the waste water and final clarification take place in the second chamber. The activated sludge settles on the floor of the activated sludge tank and the treated waste water from the cleaned water area is pumped into the outlet. The cleaned waste water is dispersed into the soil via optional Roth seepage modules.
The working principle ensures excellent cleaning performance and low-maintenance operation because there is hardly any sludge. The generous dimensions throughout the various phases of the system ensure long intervals between each round of waste disposal. The rotary valve technology makes the MicroStar TB nice and compact – with no noisy solenoid valves. The state-of-the-art controls allow for safe operation. The Roth MicroStar TB small sewage plant complies with all statutory standards. Roth provides a 20-year manufacturer’s guarantee for the Twinbloc tank.
The local authorities decide which areas are to have waste water disposed of locally in accordance with the waste water disposal concept. Landowners in these areas must ensure that waste water is disposed of properly by means of a small sewage plant or sealed pit.
In order to discharge treated waste water into lakes and rivers, the owner of the site in question must always have a permit as required by water legislation (Federal Water Act) or a discharge permit from the channel network operator if the overflow is connected to a channel. Country-specific regulations must be observed. For more information, visit