Conventional Biological Systems
These systems are reaching the end of their product life cycle as they:
- are capital-intensive;
- no longer satisfy the demands of the Environmental Agency or the Company Accountant;
- produce two outputs, neither of which are amenable for recovery or re-use:
– a low quality final effluent containing of inert solids, organic substances and residual biomass
– waste activated sludge known as biomass.
The “Zero Discharge” Wood Pulp Effluent Plant
The Esmil “Zero Discharge” Wood Pulp Effl uent Plant combines the advantages of conventional physico-chemical processes with proven membrane technology. All solid and liquid phase outputs are recoverable thereby resulting in a “zero discharge” plant.
The plant can be substantially automated and an operator can be fully trained within a matter of weeks.
- Permeate for use as general site process water or boiler feed
- Concentrate for use as chemical make-up water
- Solid Cake for use in waste heat boiler
Innovation Through Development
Innovation was key in the following two areas:
- Development of the Reverse Osmosis membrane plant, which was carried out in association Desalination Systems Inc of the USA, the world’s largest supplier of speciality membranes.
- Formulation of a new polyelectrolyte for efficient flocculation of wood pulp effluent.
References for MDF effluent treatment:
1995 / 1999 – Kronospan Ltd., Chirk, North Wales, UK (2 projects), 250 m3/day / 450 m3/day
1996 – Kronospan Luxembourg S.A., Sanem, Luxemburg, 250 m3/day
1998 – Kronospan Szczecinek Sp. z o.o., Poland, 450 m3/day
1998 – Kronospan GmbH, Lampertswalde, Germany, 450 m3/day
1999 – CSC Forest Products Ltd., Sterling, Scotland, 650 m3/day
1999 / 2003 – Unilin SAS, Sedan Cedex, France (2 projects), 500 m3/day / 500 m3/day
2000 – Binderholz Bausysteme GmbH, Hallein, Austria, 450 m3/day
2001 – Interpanel S.A., Zamora, Spain, 250 m3/day
2001 – Financiera Maderera S.A., Padrón, Spain, 400 m3/day
2012 – PDK Apsheronsk JSC, Russian Federation, , 480 m3/day
2018 – Panel Plus Co., Ltd., Songhkla, Thailand, 500 m3/day