Fully automatic system for water treating in evaporative cooling circuits.
The main functions are:
control of water level in tanks
anti-scale anti-corrosive additive dosing
anti-algae additive dosing
salinity control by drainage
The main advantages are:
system parameter optimization
automatic adjustment to changing production workloads
elimination of dosage and drainage waste
skid-mounted and pre-assembled components
The system is designed for the automatic control of the main parameters of an evaporative cooling system. A sensor measures the amount of water in the collection tank and controls refilling to maintain the level within the required limits. The amount of water refilling is processed by the microprocessor, which optimizes the use of the drainage and additives in order to maintain the preset parameters. The whole system is hydraulically and electrically pre-assembled on a steel skid.
System to manage water in the EASYTEAM evaporative cooling circuits.
The main features include:
softening of makeup water
salinity check through draining
The main benefits are:
plant parameter optimisation
automatic adaptation to production loads
elimination of waste when dosing and draining
The system has been designed to automatically manage the main parameters of an evaporative cooling circuit. Makeup water amounts are determined by the microprocessor, which optimises the use of draining and additives to maintain the set parameters. A twin-tank volumetric exchange water softener of suitable capacity, complete with filter and bypass incorporated, ensures a continuous supply of water with no salts, calcium and magnesium, which are the main causes of scaling in cooling systems. Additives are injected by an electronic dosing pump installed on a graduated container in transparent polyethylene, complete with level switch. Draining is controlled manually with a motorised valve with spring closure. Makeup water quantities are counted via a meter connected to the microprocessor. A totalising meter for draining operations enables adjustments to be checked retrospectively. The system comes complete with filters, check valves and sample collection taps and is managed using LOGO! SIEMENS microprocessor logic. An electrical/hydraulic skid-based unit in painted steel is provided.
Before starting to circulate, the supply water is filtered and treated using a bed of strong cation resins to prevent scaling due to the presence of salts. Ionic exchange water softeners are ideal for softening water in cooling systems, ensuring the water supplied has no salts, calcium or magnesium, which are the major cause of scaling. Savings relating to running costs as regeneration only takes place when actual regeneration capacity has been exhausted. An electronic control valve ensures increased flexibility and precision when programming cycles and managing the water softener. Opting for ionic exchange resins with homogeneous membranes that are used in the food industry means a supply of softened water is provided constantly. The resins are contained in tanks with an internal one-piece thermoplastic blow-moulded shell, with materials suitable for use in the food industry and an external robust sheet casing made of epoxy resin and glass wool filaments. The hardness of the outlet water can be adjusted so it is better suited to the requirements of the system.
Reverse osmosis is used to remove minerals from aqueous solutions via a membrane filtration system with the highest power of separation. A pressure higher than the osmotic pressure is applied to a special membrane, which is only permeable to water and not dissolved substances, obtaining a quantity of pure water (permeate) and a concentrated solution (concentrate). With correct sizing and a high-performance membrane it is possible to remove at least 99% of salts contained in water. Only high-quality, low-pressure (i.e. low-energy) membranes are used for osmosis to optimise management costs. Osmosis is used in all processes where high-quality water is required (chemical industry, food industry, metallurgy, galvanising, steam generators) or to reduce the amount of unwanted substances (aqueducts, wash systems, cooling systems).
Cooling system drain water homogenisation unit. The unit contains 2 tanks – waste water from the water softener collects in the first tank and the second tank holds water discharged from draining operations. Correctly mixing both liquids enables conductivity to be adjusted and kept within set limits. The PLC-managed cycle ensures correct operation and flags irregularities.