Eimco Water Technologies has wide experience with different types of biological treatment methods. Within this field our key technology is an advanced, high-loaded biological treatment method called FlooBed®. It is a biological treatment of industrial process or waste waters. The biology consists of micro-organisms both attached to the carriers and suspended in the water. The FlooBed® solution has been the choice for several types of water such as effluent from process industries, landfill leachate and municipal waste waters. In the pulp and paper industry, FlooBed has been built into the mill area, for pretreatment of existing activated sludge plants and for new mills with high requirements.
FlooBed® Bioreactor is a Suspended Carrier Biofilm Process (SCBP). It is reliable and easy to operate and has been developed especially for industrial effluent treatment. Compared to conventional methods FlooBed® tolerates higher variations in water quality and flow and still maintains its high treatment efficiency. FlooBed® processes are used to significantly increase the capacity of existing activated sludge systems, and FlooBed® is also suitable for covering the total effluent treatment of the factory.
In contrast to traditional activated sludge processes most of the microbes grow as biofilm on surface of the freely moving carriers. The plastic carrier elements inside FlooBed® have a large surface area and a structure which is optimized to protect the biofilm from abrasion. This allows a high amount of biomass inside the reactor and the needed reactor size can be kept small. Savings in civil work costs are remarkable with the FlooBed® process.
Carriers are made of plastic, and their density is slightly lower than that of water. Due to that carriers can be easily mixed through Eimco aeration system, which covers the entire reactor bottom. The process does not require backwashes, which were typical for conventional biofilm processes and took up a lot of energy in addition to interfering with functioning of the process.
FlooBed® and Activated Sludge System as an Upgrade
The combination of a high-load FlooBed® Bioreactor and a low-load activated sludge plant is an efficient and stable solution for improved industrial effluent treatment. The FlooBed® BAS process has already proven its efficiency in several successful full-scale installations. With FlooBed® the loading of a treatment process is reduced and peak loads are efficiently managed. This enables stable functioning of the following activated sludge stage and gives good quality discharge as a final result.
Industrial effluents typically have high concentration of organics and there are significant variations in both flow and concentration. FlooBed® BAS utilizes the advantages of conventional biofilm processes and combines them with the best features of activated sludge plants.
The compact FlooBed® BAS process can easily be installed both in greenfield factories or embedded into existing treatment systems, which are then modified to modern FlooBed® BAS processes.
Benefits of FlooBed® Based Processes
- Good treatment efficiency => low residual concentrations
- Stable discharge water quality
- A short start-up in the beginning and also after accidental or planned shutdowns
- Excellent capacity for handling toxic compounds and load variations
- Low sludge production
- Small construction costs