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Industrial and civil wastewater treatment technologies

Simplicity, reliability ... and the lowest product life cycle cost: water treatment solutions from MITA Water Technologies.
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Our support throughout the product life cycle

We offer a series of additional support services for our customers: the MITA Lifecycle Services.
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A sustainable and efficient solution for every industry and need

Wastewater treatment will increasingly be a resource efficiency and optimization opportunity for organizations in both civil and industrial settings.

Water treatment and cooling: why consider an integrated system

Water reuse is a beneficial practice for both the planet and businesses: we are increasingly aware of this after the numerous global events that highlight the difficulty of managing this resource.

The essential (and minimum) step to achieve this result is to equip your company or community with an adequate wastewater treatment system equipped with the appropriate purification phases (pre-treatments, biological treatments, finishing with filtration, …) . However, a truly integrated system for the management of civil and industrial water also includes a cooling phase.

Both the removal of pollutants and the disposal of heat allow the development of the circular water economy within organizations: they are two sides of the same coin.

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Raffreddamento e Trattamento Acque Reflue

Water reuse through cloth filtration and process cooling

The quality of wastewater from a company or civil community differs greatly depending on the characteristics of the organization itself. Consequently, values ​​such as total suspended solids, BOD/COD, phosphorus differ greatly… In the purification of municipal wastewater, the three standard treatment phases are always foreseen, while the industrial water management processes depend from plant to plant.

However, a phase that is often considered necessary is that of final filtration: following this type of process, the quantity of suspended solids is often close to 5-10 mg/l and the treated water can be reused in many civil and industrial processes ( but not for drinking water). In the field of final (or tertiary) filtration, free-fiber cloth filters are increasingly appreciated for their very high particle removal efficiency.

Coming then to the heat rejection phase, there are many existing cooling solutions: evaporative cooling towers (which themselves work using water as a cooling medium) are renowned for their high efficiency, while dry coolers only use electricity to dispose of the heat (therefore with zero water used). The best meeting point between efficiency and resource optimization is represented by adiabatic dry coolers.

MITA Group solutions for the complete management of the water cycle

So, water management in industrial or civil processes: problem or opportunity?

MITA Group has always believed in integrated water management systems as an efficiency tool for organizations, offering both treatment (MITA Water Technologies) and cooling (MITA Cooling Technologies) solutions for its customers.

Below are some of the solutions proposed in the two areas.

  • Free-fiber cloth filters. An extremely effective solution for tertiary filtration and reuse of the blue resource: high solids removal yields (<5 mg/l), reduced energy use during the backwashing phases of the cloths, extremely low life cycle cost.
  • Biorulli® rotating biological contactors. Compact and modular system for the degradation of organic substances present in the wastewater via aerobic bacteria.
  • PME-E series evaporative cooling towers. A lightweight, non-corrosive fiberglass open-loop cooling system.
  • PAD-V adiabatic dry coolers. Ideal for saving water and energy while maintaining high efficiency. The functions can be automated from the control panel depending on the time of day and year.
  • MITA Systems cooling stations. For more efficient and automatic management of evaporative towers and coolers: they are complete with hot and cold water containment tank, dosing and control systems for the conditioning product, control panels.
  • Remote monitoring solutions. Treatment technologies and coolers can be equipped with “industry 4.0” control panels: performance, use of resources, maintenance just a click away.

Complete water management with treatment and cooling: advantages

  • Treated water that does not clog the internal components of the cooler (with upstream treatment line).
  • Cooled water, for less maintenance of the treatment lines (with upstream cooling line).
  • The system as a whole gains in efficiency and saves resources.
  • Experience since 1960 in water management.
  • A single interlocutor for the complete cycle.
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Filtri a Tela e Torre di Raffreddamento per Industria della Plastica

Cloth Filters and Cooling Towers for Plastic Industry

Cooling and wastewater treatment together: that's the card that proved successful in supporting a plastics equipment company in northern Italy, which was already working with Group company MITA Cooling Technologies. The possibility of water reuse, through comprehensive management of this resource, is a card that industries can exploit to derive value from blue gold.

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Company
Plastics company in northern Italy
Year
2020-2023
Location
Province of Brescia (Italy)
Interlocutor type
End customer
Scope of application
Industrial Waste Water
Application field
Plastics
Story in a nutshell
The client is a large group, with operations in four European countries, a manufacturer of plastic equipment and technologies for sewage networks. MITA Group first provided cooling technologies for process fluids for a site in northern Italy and, later, technologies for wastewater treatment and reuse.
List of customer requirements
Suspended solids abatement cooling water (pre- and post-cooling) for reuse in industrial process
Input flow rate
- Average main process line flow rate: 150 m3/h

- Average flow rate secondary and tertiary process line: 80 m3/h each
Input SST
100 mg/l (average inlet SST)
Inlet water T°
About 50°C
Upstream treatment chain
MITA Cooling Technologies process fluid cooling towers
Technologies supplied
- N. 1 sistema a filtri a tela PEC 6/30: 6 dischi orizzontali in vasca di calcestruzzo, 30 m2 superficie filtrante totale

- N. 1 sistema a filtri a tela PECV VM 3/15: 3 dischi verticali, 15 m2 superficie filtrante totale

- N. 1 sistema a filtri a tela PEC 3/15: 3 dischi orizzontali in vasca di calcestruzzo, 15 m2 superficie filtrante totale

Output TSS
< 10 mg/l
Output of other treatments
Phosphorus abatement (as a result of removal of suspended solids)
Services
- TF2 VM pilot filter in operation for definition needs SST removal

- Installation and testing assistance

- One year of maintenance (including chemical washing of cloths)
Key to Success
- Efficiency of proposed filtration
- Previous supply of MITA Group's solutions (cooling towers) for industrial process management

1. Installation context

Water management in industrial processes can be a problem or a resource depending on the solutions adopted: industries that decide to both treat and cool water achieve the double effect of minimizing consumption and making their production more efficient.

Like a company in northern Italy, a manufacturer of plastic equipment for various sectors: already a customer of MITA Cooling Technologies with a PMS evaporative tower, between 2020 and 2023 it relies on MITA Water Technologies for three successive supplies. Specifically, the company, a multinational with a presence in four European countries, requires water treatment solutions for three industrial process lines within one of its plants. The aim: to break down suspended solids in the water, pre- and post-cooling, to reuse the blue resource for industrial machinery.

2. Proposed solution

Water reuse is becoming increasingly popular among industries, which are aware of how much value can be derived from the circular economy: tertiary treatment of wastewater allows for very high quality output.

This is why MITA Water Technologies offers three different models of disc filters to the plastics customer in different tranches. First, a system with PEC 6/30 cloth filters in a concrete tank, with 6 horizontal discs, for a total filtering surface of 30 m2: a solution suitable for purification in the process line with higher average flow rate (150 m3/h). The other two lines, both with an average flow rate of about 80 m3/h, are served by a PECV VM 3/15 system (3 vertical discs, total filtering area of 15 m2); and a PEC 3/15 system in concrete tank (3 horizontal discs, also with total filtering area of 15 m2).

3. Results and key success factors

Filtration efficiency allows the removal of suspended solids in cooling water at levels below 10 mg/l-a very good quality for treated water. Phosphorus removal is a consequence of removing most of the total suspended solids.

MITA free-fiber cloth filters have greater mechanical strength than micro-net solutions, also taking advantage of the principle of depth filtration (instead of two-dimensional) and increasing the useful volume for tertiary treatment.

Also to be considered is that water filters inside the discs and the removed solids remain in the tank: therefore, the free-fiber cloth does not accumulate foreign material, improving the overall robustness of the system. Cloth washing is done by suction, reducing mechanical stress, and reducing energy consumption compared to pressure washing.

Un fattore chiave di successo risiede naturalmente nella precedente fornitura di una torre evaporative da parte di MITA Cooling Technologies, azienda di MITA Group: la possibilità di fornire sistemi integrati per il ciclo dell’acqua (non solo trattamento, ma anche raffreddamento) viene considerato un plus dall’azienda della plastica che dà quindi l’opportunità a MITA Water Technologies di collaborare direttamente in tre diverse fasi.

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Minimal footprint.

Minimal footprint. Compact solution, reduced need for ancillary works.

Very high filtration yields.

Very high filtration yields. Due to free-fiber cloth depth filtration: TSS concentrations as low as 5 mg/l expected at discharge.

Reduced energy use.

Reduced energy use. Gravity filtration, power consumption only in the backwash phase.

Minimum lifecycle cost.

Minimum lifecycle cost. Low acquisition, maintenance and resource utilization costs result in optimal return on investment.

Easy maintenance.

Easy maintenance. Direct accessibility to all utilities, filter cloths with high mechanical strength.

Operational continuity.

Operational continuity. Filtration is continuous during counter-current cloth washing, which is operated sequentially so as not to interrupt machine operation.

PECV VM Cloth Filters: available version

Filtri a tela Standard

Basic Version

Backwash works with only one pump at a time-an additional energy saver.