Efektivní a stabilní anaerobní čištění kontaminovaných odpadních vod.

Rakouská společnost nabízí novou technologii na čištění odpadních vod v anaerobních podmínkách. Nová technologie s integrovaným směšovačem a membránovým odlučovačem nabízí vysoce účinný systém čištění průmyslových odpadních vod za anaerobních podmínek. Nabízí mnohem širší škálu aplikací pro čisticí procesy než jiné technologie a má srovnatelné lepší výsledky čištění. Společnost hledá technické i obchodní partnery, stejně jako zájemci o licenci.

Description:
This Austrian company offers a new technology to clean waste water under anaerobic conditions. The system yields higher chemical oxygen demand (COD) reduction rates compared to other available systems. It therefore yields excellent results for cleaning highly contaminated waste water in industries like fibre, paper and pulp, food, etc. The reactor thereby is suitable for operation with pellet or flocculent sludge.

The main innovative features are the integrated mixer and the membrane separator:

Integrated mixer:
The process differs from conventional anaerobic technologies primarily in the installed mixer. The mixer achieves high circulation velocities that can be adapted in the reactor to specific requirements.
Recirculating pumps are eliminated and thus the required energy for reactor operation is substantially reduced, leading to minimized costs. The mixer prevents any concentration gradients in the reactor and ensures a homogeneous mixture in the lower part of the reactor. Reduction occurs in a constant milieu and is not interrupted by any local differences in the composition. In contrast to the tall and slender reactors marketed by competitors, this anaerobic reactor is of reduced height and thus saves costs by minimizing needed construction materials. In addition, the tank can be made of any material that is resistant to the utilized media. In order to keep investment costs as low as possible, the reactors are preferably built in concrete design with plastic lining.

Membrane separator:
Gases, liquids and solids are separated by means of a membrane that is integrated into the reactor. The gas is separated by the membrane from any residual biomass and rises through the central opening. The separated biomass remains in the active reactor zone. Any overflowing biomass is deposited on the upper side of the membrane. The gas bubbles forming on the membrane create a slight amount of vibration that efficiently transports the sludge separated from the clarified water through the outlets at the circumference of the reactor back into the lower reactor zone. Undesired sludge overflow can be kept to a minimum in the clarified water.
The sludge is measured at several levels in the reactor in order to assess its distribution and to be able to influence the rotational speed of the mixer. There is no need for mechanical scrapers in the clarification basins because of the sedimentation zone in the upper section of the tank.

Innovative Aspects:
Anaerobic method to achieve high cleaning rates of industrial waste water.

The benefits of the anaerobic reactor are:
- Highest reduction rates for COD and sulphur
- Recovery of usable energy
- High availability low maintenance
- Low investment costs
- Low operating costs
- Efficient separation of gas and sludge
- Unlimited functionality, even without pellet formation
- Effective separation of overflow sludge from clarified water
- Homogenously mixed waste water in the lower part of the reactor

Comments:
- Type of partner sought: Industrial user, local engineering companies, consultants, licensees
- Specific area of activity of the partner: Wastewater treatment or industry sectors having to deal with their own waste water problems. Might also be interested in cleaning the methane gas produced during the process.
- Task to be performed by the partner sought: Test and adapt the system for specific needs. Integrate the system into their own projects. Develop adaptions for all kinds of different fields of application.

(13 AT 0105 3RSP)