Partnering opportunity

Low-energy pre-treatment of industrial wastewater

Summary

A German engineering company offers effective pre- treatment of industrial wastewater with a patented microflotation technology. Microflotation can be easily integrated into existing concepts. The technology works by ultra-fine gas bubble filtration and shows good results in reduction of chemical oxygen demand (COD). It is environmentally friendly as chemicals are dosed according to exact requirements. Partners are sought for licensing and commercial agreements with technical assistance.

Partner sought

Partners are sought for licensing and commercial agreements with technical assistance: • Partners from industry interested in employing the technology in their wastewater treatment applications and processes are sought for commercial agreements with technical assistance. The technology is adjusted to the individual requirements of the application with the assistance of the German company. Training will also be provided • Small or medium sized engineering offices or intelligent plant construction companies with process know-how and good contacts to the processing industry are sought for licensing agreements. The partner could possibly (but must not) act as a general contractor. Individual countries or areas of application can be individually licensed. The partner will be trained by the German company. Engineering offices should then be able to offer advisory services. Partners should integrate the technology in wastewater treatment concepts. Activities in retrofitting and upgrading of outdated and existing plants should also be of interest

Description

Chemical oxygen demand (COD) and total suspended solids (TSS), fat, oil and grease (FOG) are very high in waste water of processing companies. Often conventional wastewater treatment methods do not clean the wastewater sufficiently to fulfil regional requirements for indirect discharge or further treatment. A German engineering company offers to integrate a microflotation technology into the wastewater treatment concept of industrial companies. The technology offers indirect dischargers to secure the limit values and minimise the massive polluter surcharges. In the case of direct dischargers, biological treatment stages can be relieved to the maximum and operated in a much more stable manner. The technology protects, e.g. aerobic and anaerobic processes and it can be used to preserve membrane bioreactor (MBR) or moving bed bioreactor (MBBR) plants. Microflotation is a further technological development of classical dissolved air flotation. Microflotation produces monodisperse distributed micro air bubbles of the size class 30-50µm to float the activated sludge stably. >90% of the microbubbles are within this size range. Besides air, all industrial gases can be used as microflotation gas. The microbubble density enables high TS concentrations in the separated sludge. The separated flotation sludge can be disposed of in biogas plants without further treatment and used for energy production. At the same time, the system enables low TSS concentrations in the clear running of the plants. The patented technology is furthermore equipped with a self-cleaning mechanism allowing maintenance-free operation. The method works mostly physically. In some applications an integrated dosing control mechanism ensures that individual wastewater-adjusted dosing of chemicals is carried out. Operation at reference plants shows that depending on the feed wastewater chemical oxygen demand (COD), biochemical oxygen demand after five days (BOD5) and nitrogen values could be reduced by up to 30-70%. Almost 100% of TSS, fats and oils can be separated. At the reference plants 1-200m³/h are being treated. In principle, each wastewater problem must be considered individually. Pilot tests can determine guaranteed operating costs and limit values. The company has containerised mobile technical plants that can be used for this purpose. Industrial companies interested in adjusting and integrating the technology in their wastewater treatment processes with the support of the German company are sought for commercial agreements with technical assistance. Licensees, who could act as general contractors, are sought for defined areas of application or regions.

Advantages and innovations

Patented solution with the following advantages • Higher degree of purification than conventional solutions • More energy-efficient process than conventional solutions • An innovative control system enables the microflotation process to be adapted to the respective feed situation. • Not susceptible to fluctuation in hydraulic or material load • Clogging-free and low-maintenance operation • Low operational expenditure (OpEx) • Low capital expenditure (CapEx) • Works faster and more effectively than conventional technologies

Development stage

Already on the market

Intellectual Property Rights (IPR)

Patents granted


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