WTE Wassertechnik GmbH
Potable water production
250,000 m3 /d
Memthane® is an anaerobic membrane bioreactor (AnMBR) process which contains the micro biological anaerobic process (excludes oxygen), this technology turns medium to high-strength wastewater into energy and clean water that can be directly reused or discharged. The system was developed in a cooperation between Veolia subsidiary Biothane and Pentair. The Biothane reactor processes the wastewater and generates biogas. Pentair’s X-Flow membranes separate the sludge and produce clean water. The sludge from the reactor remains rich in nutrients and can be used by local farmers as fertiliser. Woodlands Dairy calls its new Memthane installation a Resource Recovery Plant, or RRP. Whereas all effluent from the various production processes used to end up in a combined effluent sump, the new wastewater plant is capable of processing 1.5 MLD. At a later stage, this is set to be upgraded to 2 MLD. The incoming feed stream with about 10,000 ppm of COD is turned into a high quality effluent with less than 100 ppm. As dairy processing is an energy-intensive operation, the biogas is a welcome bonus used to heat the on-site biogas boiler.
In the Woodlands Dairy factory, pretreatment of the feed stream is limited to pH adjustment and an equalisation tank. In peak season the plant can handle1,500 m3 of wastewater containing about 12 tonnes of COD. The ultrafiltration (UF) part of the plant consists of four separate skids with 26 modules each, applying Helix membranes to maximize UF efficiency. All of this water is reused, most of it after an additional dual Pass RO polishing stage as the only necessary post-treatment. Memthane significantly reduces wastewater treatment costs compared to conventional technologies. The pore size of the membranes delivers a permeate free of suspended solids. At Woodlands Dairy, just as in other dairy operations around the world, Memthane has proven to be a robust and reliable solution.
Biothane is Veolia Water Technologies techno center for industrial effluent treatment and anaerobic technologies in specific. Memthane is one of the latest developments done with Pentair X-flow as exclusive partner.
Biothane is the developer of leading anaerobic technologies as Biobed® Advanced EGSB, Biothane® Advanced UASB and Biobulk® CSTR. These technologies find its application in the field of Food & Beverage, Pulp & Paper and Chemical industries.
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