Trattamento Acque Reflue per l'Industria Plastica

Water Treatment for Plastics Industry

Total suspended solids contained in wastewater from the plastics industry are effectively removed by different MITA solutions such as decanters, flotation units, sand filters or free-fiber cloth filters.

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Examples of areas: manufacturing of manufactured goods, packaging industry, bioplastic production, production of plastic components for electronics and automotive (process examples: molding, injection, extrusion).

Main requirements: removal variable loads of suspended solids, organic component removal (for bioplastics), water recovery.

Water Treatment Solutions for the Plastics Industry

Decantatori Lamellari Flowpack con Telaio F

Flowpack Lamella Decanters Monoblock FM

Solid-liquid separation, sludge decanting, water clarification for further finishing operations-all these are represented by the FM Monoblock Series lamella decanters. Compact, efficient and space-saving solution. Simplicity of operation and very low product life cycle costs are pluses appreciated by customers in the civil and industrial fields.

Vertical-Axis Disc Filters PECV VM

An optimal solution for small and medium-sized plants, as much for its compactness as for its simplicity of installation and operation: these are the PECV VM metal tank vertical axis disc filters, for the final separation of suspended solids from civil and industrial wastewater.

Process water treatment in the plastics industry

Industrial wastewater from the plastics industry is often characterized by a high content of total suspended solids (TSS): these can result from raw material residues, chemicals used in the production process, and wear and tear on machinery and equipment.

Wastewater from this industry is also characterized by the frequent presence of microplastics, so integrated processes of cloth filtration and reverse osmosis are useful.

In contrast, the presence of organic component is generally low (low BOD and COD values): an exception is the production of bioplastics, as its processing produces effluent rich in fiber, protein, polyphenols and other natural substances.

Of course, some general requirements have been listed here, which should always be validated through testing with pilot units.

MITA water treatment technologies for the plastics industry.

The following technologies can be used for the removal of total suspended solids from industrial wastewater in the plastics industry.

Lamella-pack decanters. Solids suspended in the water are gravitationally deposited on the bottom of the tank and are subsequently removed by pumps.
Pile cloth media filters. A very high-efficiency solution for filtration and separation, also applied upstream of further solutions (such as reverse osmosis and UV lamp systems), with the aim of reducing the inlet load.
Sand filters. A classic solution for removal of the finest suspended solids: simple to install and maintain.

Wastewater reuse and cooling in the plastics industry: two opportunities to seize

This is the great opportunity that industries in all sectors are discovering in recent years: reuse of wastewater allows not wasting a useful resource for production processes, which can thus increase efficiency with reduced costs.

This is most true in the case of the plastics industry, for which there are case studies of treatment and reuse of the blue resource through useful integration of two solutions: free-fiber cloth filters and membranous systems (reverse osmosis).

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Some MITA projects

Biocombi compact systems for a wastewater treatment plant serving 250 population equivalents

MITA Water Technologies supplied the Biocombi© BC 15/2 compact plant for biological and tertiary treatment of wastewater at the Mirabello Ciria plant.

Biodischi per Impianti Compatti Biocombi

Biodiscs and Decanter for Italian Food Company: Nutrient reduction of 80%

Integrated systems for different stages of water treatment: the key to a successful supply for a food company, through an environmentally sensitive engineering consulting firm in northern Italy.

Biorulli e Filtri a Sabbia per Depositi Costieri di Esso

Biodiscs and Sand Filters for Coastal Depots of Esso: reduced energy consumption and maintenance

MITA Water Technologies provided ESSO Italiana with wastewater treatment solutions at the coastal depots in Naples and Palermo. Through the use of continuous regeneration sand filters and Biorulli(r) biodiscs, significant results were achieved, such as reduced energy consumption and maintenance costs, plant modularity, and compliance with current regulations.

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