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We believe in circularity as an opportunity for development and growth. A response to the threefold challenge of economic growth, environmental protection and social sustainability.

Construction of glass sorting plant

The Coriano plants were built for the purpose of separating impurities consisting of foreign fractions present in the separate collection of the vitreous fraction. These impurities are identified as metals, plastic, paper, wood, infusibles, unbreakable glass, etc. The construction of the plant is aimed at obtaining glass output that meets CoReVe specifications. The construction of the plant was conducted in record time: four weeks on site and two months of supplying the machinery since the project was approved to see the plant up and running.

The project consists of the components summarised below:

vibrating channel with an 8 m³ hopper, installed to feed the line with a robust machine that does not create clogging and crushing problems;

backhoe loader conveyor, delimited to prevent access under the machine during operation, given the hazardous nature of the material handled

sorting belt fitted with speed variator that can be controlled by the operator if the line requires speed regulation or there are sorting needs, without causing stoppages to the line;

Safety rope that allows the machine to stop along its entire length;

Pre-fabricated sorting cabin with 4 sorting workstations;

stainless steel connection belt being located under the deferrization belt;

magnetic sorter with hoisting system (electric hoist);

magnetic sorter with hoisting system (electric hoist);

glass outfeed conveyor.

INSTALLATION OF A MATERIAL PELLETISING LINE

PAL's intervention in the material pelletising sector involves the supply of technology to upgrade existing plants. In response to specific customer requirements, PAL introduced a new family of presses designed for wood fibre processing, Dynapelletpress. This new technology made it possible to eliminate any elastic instability between the shaft, rollers and die and to intervene in difficult circumstances thanks to a robust design and established technology.

RECYCLED WOOD CLEANING PLANT

The increasing focus on sustainability has pushed companies to find alternative solutions for the recovery of natural resources. Since the 1980s, PAL has been engaged in technological research for cleaning recycled wood. I In Portugal, PAL Green Division designed and built in 2018 a waterfall cleaning tower that integrates state-of-the-art technological and innovative machinery in a small area.

The system is able to process 40 t/h of recycled wood for chipboard production. The plant is equipped with two Cyclops for the cleaning of ferrous, non-ferrous and heavy pollutants, one operating in the micro and one in the macro fraction, in addition to the use of technology for cleaning the fine fraction. These are optical solters with very high efficiency and continuous operation for the removal of any pollutants such as plastics, metals and aggregates.

DEVELOP OF A GROUND-MOUNTED PHOTOVOLTAIC SYSTEM

The construction of a grid-connected ground-mounted photovoltaic plant on the former inter-municipal landfill, site in Novellara (RE), highlights PAL Green Division's focus on renewable energy.

The project involved the following interventions:

  • installation of reception booth next to existing buildings
  • installation of medium voltage switchboard
  • excavation and laying of polyphers
  • installation of a new MV/LV transformation cabin
  • construction of a plant with subsequent installation of support structures to accommodate the new photovoltaic sails

multi-year maintenance service

PLANT FOR SLUDGE TREATMENT

PAL Green Division was responsible for modifications on the sludge line of a civil waste water treatment plant in Grosseto. In particular, it has built a hub for the delivery and treatment of all biological sludge produced. The plant is divided into two parts, each with specific functions.

  • The first section dealing with the management, accumulation and disposal of dehydrated sludge basically stores the sludge, handles the milling/ accumulation for an adequate period of time and fills the trucks fitted with disposal skips. The process is conceived along no. 2 parallel lines, capable of containing approx. 80 m3 material each, for a grand total of 160sqm. I The two containment silos are made of vitrified steel, to avoid oxidation phenomena related to the aggressiveness of the contents and to facilitate maintenance, cleaning and sanitising operations, and have a diameter of 4 metres. Each silo is equipped with a sliding frame extractor with an AISI 304 stainless steel hydraulic piston with a fixed capacity of 50 square metres per hour. The silos are loaded via 3 chain conveyors.

Second section for the intake of solid sludge from other smaller plants. The process is conceived on 2 parallel lines, each capable of holding about 60sqm of material, for a grand total of 120sqm.

IMPIANTO DI COGENERAZIONE DA BIOMASSE

The amount of biomass available to the client company prompted it to look for a way to optimise it, replacing almost entirely the use of fossil fuels.

PAL intervened in the process of disposing of the old system and installing the new structure, which consists of three parts:

  1. Biomass combustion plant
  2. Thermal oil plant for heat recovery and ORC turbine power generation
  3. Hot water cooling plant and waste heat recovery from the turbine used for the pellet drying line and district heating for external industrial users.

The power delivered by the plant is 995 kW gross, which after internal self-consumption becomes 825 kW transferred to the grid. The thermal energy is instead 4,000 kW in the form of hot water at a temperature of 80/90°C, which can be used to power the new belt dryer for pellet production and, in part, for industrial district heating to an external utility. The annual quantity of biomass required to reach these targets is 16,000 t/year.

CONSTRUCTION OF AN UNDER-SCREENING LINE

The CSS production line is fed by three different flows from two separate plant sections.

  • The first flow - SOV1: under-screening with a size greater than 80 mm at the outlet originating from the pre-treatment system of the OFMSW (Organic Fraction of Municipal Solid Waste) that has not yet undergone digestion.
  • The second flow - SOV2: underscreening materials of more than 80 mm deriving from the sorting of processed material through composting that underwent bi-oxidation accellerated in two stages: the first in a forced aeration bio-tunnel; the second on an similarly aerated floors, for a total treatment time of 25-29 days.
  • The third flow - SOV3: under-screening materials of more than 40 mm delivering from the sorting of material exiting the bio-tunnels belonging to the new aerobic composting section.

The new line, built by PAL, can be fed through the existing line (SOV3) or through a special loading hopper using a wheel loader (SOV1 and SOV2). The plant was designed to have a certain degree of flexibility thanks to the bypass system, that allows the better manage any downtime due to maintenance.

AUTOMATIC WASTE SORTING PLANT

PAL Green Division was awarded the contract for the construction of an automated waste sorting plant in Tolentino, Macerata province, specifically for paper, cardboard and light multi-material.

The following equipment was supplied for the project:

  • 1 Bag taering equipment
  • 2 Magnetic separators
  • 2 Induced current separators
  • 3 Optical sorters
  • 2 Rotaring drum screens
  • 1 Double-stage ballistic screen
  • 2 Sorting cabins
  • 1 Baling press
  • 40 conveyors
  • 130 ton of steel structures

Moreover, the contract includes the supply of all connecting conveyors between the machines, the mechanical installation, the supply and installation of the switchboards and the on-board wiring, and the extraction system. The sorting process for both types of material will take place in the same production area.

CAR FLUFF MATERIAL RECOVERY PLANT

PAL was involved in the realisation of an innovative automatic plant for the cleaning and valorisation of carwaste, i.e. the recovery of end-of-life vehicles.

By means of a centrifugal separator with a perforated grid, the plant enables the cleaning, separation and screening of the light portion of ASR from grinding. After an initial cleaning, the material enters a zig-zag air separator to further separate light fluff from residual heavy plastics. The fluff obtained is then pelletised for energy use by cement factories.

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