Waste Water Treatment
Industrial Waste Water
Many industrial production effluents are polluted by various organic substances and can cause a massive disturbance of the biological equilibrium by consumption of dissolved oxygen in a water resource.
Therefore limits are set to the biological and chemical oxygen demand (BOD, COD) for effluent water which is released into the sewer or into a water resource.
Many enterprises must therefore treat their effluent partially or completely before releasing it. Treatment may also be a way to recycle process water.
Biological technologies for waste water treatment
Most organic compounds will be completely converted to CO2 and water by the growth of aerobic micro organisms and can be removed from effluent water in this way at relatively low cost.
In contrast to the low solubility of oxygen in water, which is only a few mg/l, the oxygen demand of industrial effluents is often in the range of 1000 to 10000 mg/l. High concentrations of biomass can be reached in modern methods, therefore air has to be introduced against the pressure of the water column, which causes high operation costs. Anaerobic methods work without oxygen, but start-up and stable operation of these methods are difficult.
Brochure: Trickle-Flow Technology (PDF, 880 KB)
Application Range/Areas
Reduction of organic load (COD/BOD5), of solid load (precipitable/filtrable matter) and of nitrogen compounds (ammonia, nitrite).
Intensive treatment of very low, very high or average concentrated waste water. Treatment before direct or indirect disposal or recycling.
Application areas
Chemical and pharmaceutical industries
Semiconductor manufacturing
- Laundry and textile industries
- Energy and waste disposal management
- Foodstuff industries
- Brewery and drinks industries
- Agriculture
- Animal carcass disposal
Bioreactor
Project engineering
- Assessment of the waste water balance
- Analysis in the own laboratory
- Estimation of cost
- On-site pilot operation
- Binding quotation
- Delivery of complete plant
Advantages of the trickle-flow technology
High performance and optimal adaptation - low investment cost
Minimal operating and maintenance needs - low operating cost
Advantageous design, made from PE – no corrosion protection necessary, low maintenance times
Modular set-up – low footprint, extension easily possible by addition of modules
Until today there are already 15 plants using the trickle-flow technology in operation, in Germany, Czechia, Switzerland, Greece and Aruba, either for disposal into the sewer or directly into the water.
State-of-the -art
The Trickle-Flow Reactor Technology
The Trickle-Flow Reactor can treat the organic load (BOD. COD) of industrial production effluent by biological micro organisms.
The Trickle-Flow Reactor uses a small grain, very light carrier material, which is overgrown with a highly active mixed population, which adapts to the specific operating conditions.
In contrast to the conventional technology the carrier material is not submersed in bulk water, and therefore can be aerated easily. While the effluent water trickles continuously from top to bottom over the packed bed, ambient air is ventilated in the opposite direction.
The carrier material is stable and doesn’t need to be exchanged. Growing biomass is flushed out in an automatic regeneration cycle.
The high density of micro organisms and the optimal conditions for chemical transfer between biomass, water pollutants and oxygen in excess are the basis for the very high and stable biological degradation of pollutants.
Because of the simple principle and the high efficiency the investment cost is low, and so are running cost and maintenance needs. Trickle-Flow Reactor plants are adapted to the customer specific conditions in a modular way and can be extended later-on easily.
Carrier material and Population
