C&G - Industrial Wastewater Evaporator Manufacturer
C&G Depurazione Industriale srl is an Italian Company, part of a group that has been operating for about 30 years in the Industrial Waste Water Treatment sector.
C&G is a pioneer in manufacturing industrial wastewater evaporators with vacuum technology, an advanced innovative system which allows waste water minimization with “zero discharge”.
We manufacture three separate types of evaporators:
- ES Series - smaller machine that treats from 50 to 265 GPD, removal of concentrate by hand
- V-NT Series - most commonly applied evaporator that treats 40 to 6,350 GPD, automatic discharge
- ME Series -multiple stage evaporation treatment for larger volumes, over 10,000 GPD
ES Series
Horizontally arranged boiler - Manual Discharging
The Physical concept of evaporation is always that of a vacuum heat-pump. This type of evaporator makes it possible to arrive at very high concentrations. Discharge of the concentrate is by hand. The evaporator consists of a boiler arranged horizontally and equipped with an outer shell to allow for heat exchange.
- Production capacity of distillate: from 200 to 1,000 liters in 24 hours or about 50 to 265 US gallons
- Power Supply: electric or alternative energy source
- Limit of concentration: concentrated discharge as wet sediment or crystals, at the suction capacity limit of traditional pumps.
- Energy cost: one third more than that of the evaporator with sub-merged coil
V-NT Series
Vertical Development Evaporators - Automatic Discharge
These are the most commonly applied evaporators and work using a refrigerant system with a heat pump under vacuum. Production capacity ranges from 40 to 6,350 US Gallons in 24 hours.
- Alternative power possible: natural gas, existing steam, propane
- Most commonly applied C&G evaporator
The C&G machine takes advantage of the principle of boiling in a vacuum condition, and is fed by an electric current or other alternative energy source, which, through a refrigerating cycle and relevant heat pump, allows the distillation to take place at low costs.
ME Series
Multiple Stage Evaporators - Automatic Discharge
These are for treatment of larger wastewater volumes. Energy from the first stage is used to supply the corresponding stages. Production capacity is from 2,600 to 13,200 gallons per day.
- The more stages used in evaporation, the less vapour needs to be supplied to the system, with a consequent decrease in the energy consumption fed to the boiler.
- Most commonly applied C&G evaporator
These evaporators are used to treat wastewaters from different types of industrial processes.
Energy, under the form of heat, has to be supplied when a solution must be evaporated. Electric energy is generally used to feed the refrigeration compressor in the vacuum evaporators, but when this is not possible, alternative energy sources can be used (methane, GPL, etc.).
The principle component of the evaporation costs is related to the expenses for heating and evaporating the solution which has to be treated.
Various methods have been studied to reduce this expense, and one of the most commonly used at an industrial level is multi-stage evaporation. There are a number of evaporators placed in series in these systems, and each of these is called a stage.
The solution which has to be concentrated is sent to the various boiling chambers, which each have a heat exchanger. Vapour circulates in the tubes of the heat exchanger and heats the solution which has to be treated, causing the evaporation.
The vapour used for the single stage evaporators has to be sufficient to allow all the solution to evaporate.
In the case of multiple stage evaporators, however, the evaporation process is divided into various stages and it is necessary to produce vapour only for the first stage.