Water Treatment

At Cubi Srl we take care of the implementation, maintenance or renovation of water treatment and wastewater purification plants.

We plan, create and manage civil and industrial water treatment and wastewater purification plants with the latest technological systems and highly qualified personnel.

Cubi Srl revamp plants that need to be updated both in order to work correctly and to improve energy or cost efficiency, decreasing consumption and improving performance.

Chemical-physical and flotation systems (CP FLOT). The flotation units and chemical-physical systems are offered as the only treatment or pre-treatment of the already existing biological purification plants to reduce the inlet load and upgrade the plant in terms of treatable daily pollution.

Chemical analysis and sampling. We offer to collect and analyze wastewater and drinking water and provide programmable auto samplers for an accurate characterization of the wastewater and the consequent sizing of the plants.

List of specific water treatment services

Private and industrial wastewater purification plants
Purification of water through resin, quartzite or sand technology
Chemical-physical water treatment plants
Biogas plants for gas production
Wastewater and sewage sludge treatment
Purification plants
Technical and analytical management and scheduled maintenance
Interventions on water hardness


I principali vantaggi dei reattori MBBR:

  • Reduction of the size of the biological oxidation and nitrification sector, with consequent costs related to civil works and occupied surfaces;
  • High pollutant removal kinetics following the development, on supports, of specialized bacterial populations;
  • Greater resistance to hydraulic and / or organic shock phenomena as the biomass is adhered to the supports, thus not risking being washed away by the system;
  • Absence of the problems of experimentability typical of suspended biomass;
  • Management almost similar to that of conventional activated sludge systems.

Organic Purification Plant

The treatment system used to remove micro pollutants is the organic activated sludge one, where the water purifying is carried-out by microorganisms that feed off the organic substances found in wastewater.

The technology employed foresees the usage of hybrid processes defined as IFAS: in the same reactor we find both fixed biofilm activated sludge attached to mobile supports, known with the acronym MBBR (Moving-Bed Biological Reactor) and suspended activated sludge. The activated sludge is recirculated at the top of the reactor.

MBBR systems are characterized by the presence of a biomass in an exclusively adherent form, biofilm, which takes root to the supports in the tank.

These supports can either be mobile or fixed: in the first case (typical of MBBR reactors, hence the name), they are made up by plastic material (with a density close to the one of water), they present specific, protected elevated surfaces and are kept suspended by air insufflation (aerobic compartments) or mechanical mixing (anoxic compartments.)

There is a separation stage through flotation after MBBR in order to separate the biofilm film stripped from the effluent waste, carrying out only the exceeding towards the sludge line. The presence of biofilm activated sludge attached to mobile supports also requires he presence of suitable retention grids to avoid overflowing from the reactor they belong to.

Areas od application

Water treatment is useful in different areas, each of which needs to make incoming water drinkable and return it back to nature just as clean. Despite the fact that every area has different process characteristics, the technology remains the same.

The areas of application are:

  • Milk-dairy: from the small dairy farm to the great cheese production factory
  • Meats and cold cuts: from the small butchery to the big meat processing factory up to cured meat factories
  • Wine and beverages: from the small to the big winery, vinegar factory, brewery, fruit juice and soft drink production companies
  • Fruit-Vegetable and Cannery: from the small to the big fruit and vegetable processing factories – especially tomato processing- and sauce production
  • Bakery, confectionery and catering: from the small to the big pasta, bread, sweets production factories and companies that produce ready meals
  • Steel and Mechanical: from the small to the big companies working/producing metals
  • Industrial Laundries, Dry-cleaning, Textile and Tanneries: from the small to the big textile processing factories
  • Pharmaceutical, Chemical and Plastic: from the small to the big pharmaceutical, chemical product or plastic material production factories
  • Livestock: livestock waste treatment with the aim to diminish polluting loads and nitrogen for its spreading on the land
  • Logistics, transport and large distribution: specific purification plants for the treatment of first and second flush rainwater, plants for the treatment of truck and automobile washing water
  • Airports, hotels, resorts, residence: water treatment plants, specific first and second wash wastewater purification plants.
  • Zootecnico: trattamento dei reflui da zootecnia con la finalità di ridurre i carichi inquinanti e dell’azoto per il relativo spandimento su terreni;
  • Logistica, trasporti e grande distribuzione: impianti di depurazione specifici per il trattamento delle acque di prima e seconda pioggia, impianti di trattamento acque da lavaggio camion e auto;
  • Aereporti, hotel, villaggi turistici, residence: impianti di potabilizzazione acque uso potabile, impianti di depurazione specifici per il trattamento delle acque reflue, di prima e seconda pioggia;

Il servizio di revamping sugli impianti di depurazione viene eseguito sulle tecnologie principali che trattiamo:

  • CAS: depuratori tradizionali
  • SBR: composti da reattori sequenziali a più fasi, questi sistemi sono caratterizzati da fanghi attivi a biomassa sospesa
  • MBBR: reattori a letto fluido
  • IFAS: reattori con fango in sospensione ed a letto fluido
  • MBR: reattori a membrane di filtrazione
  • FS: filtrazione a sabbia
  • FC: filtrazione a carboni

Drinking Water and Wastewater Treatment Plant Revamping

Change is possible, by choosing to improve personal and environmental health thanks to new technologies.

Revamping is great opportunity not just to save money but also to recover technologies that could be obsolete by updating them and making them re-usable.

What exactly is revamping? It’s the renovation and modernization of pre-existing purifying plants or the potential alignment of structures according to the current needs of water discharge and/or re-use. Revamping also includes adjusting plants to new technologies in order to be able to access the “industry 4.0” hyper depreciation.

Revamping means integrating, re-thinking, modernizing, and often improving the efficiency of the entire plant to the point that it can gain the same results cutting time and products compared to a brand new project.

Like with any other line, Revamping strategically requires a good project but, most of all, great expertise, able to determine efficiency through an analysis aimed to contain expenditure. The same expenditure intended and structured to meet the parameters required regarding the industry 4.0 route and the relating hyper depreciation.

The revamping service on water purification plants is carried-out on the main technologies we manage:

  • CAS: traditional purifiers
  • SBR: made up by sequencing batch reactors, these systems are characterized by suspended biofilm activated sludge
  • MBBR: moving bed biofilm reactors
  • IFAS: integrated fixed-film activated sludge reactors and fluidized bed reactors
  • MBR: membrane bioreactors
  • FS: sand filtration
  • FC: carbon filtration

Revamping Example

We revamped a purification plant nearby Vicenza, Italy, for a company that aims to perform agro-food processing in order to produce ingredients such as flours, oils and oilseed by-products.

After analyzing the pre-existing purifier, we found a water treatment ability pairs to 220 m3 per day. Therefore, considering different technological factors, we proceeded to change the existing machine with a new one with some improvements in terms of efficiency. The benefits gained are those given by the performance and safety of a technologically updated plant.