Condensate recovery is a process to reuse water and sensible heat contained in the discharged condensate. Recovering condensate instead of throwing it away can lead to significant savings of energy, chemical treatment and make-up water.
Gemwater applies condensate treatment processes in many different fields, for example:
• Oily condensate treatment in refineries, power and petrochemical plants: Gemwater resin oil coalescers
and activated carbon filters are the most appropriate technology for this type of condensate treatment.
• Condensate Polishing Units for the removal of hardness and silica from the return process steam condensate prior
to feed back to the boilers is a standard requirement in boiler circuits.
• Removal of suspended solids from the recovered turbine condensate is required in power stations: this can
be obtained with Gemwater special filters.
• Removal of oxygen and carbon dioxide is normally necessary prior to feed high pressure boilers: this can
be obtained with Gemwater GTM degassing units.
Some of the technologies to be applied to this type of process are listed to follow:
Power Stations
To ensure consistent production that meets specific water quality requirements, it is necessary to control and provide different grades of water to appropriate usage and application.
The water quality can affect power plant performance in the cooling cycle. Therefore, the parameters of power plants cooling water should undergo very strict requirements.
Makeup treatment almost always consists of demineralization to remove dissolved impurities. Some of the equipment utilized consist of softeners, clarifiers, and filters. Also often utilized we find ion exchangers and/ or membrane technology.
Gemwater has an extensive experience in Power Plant water treatment, as demonstrated by its reference list and staff experience list.
Some of the processes to be applied in this market are listed to follow:
Desalination is a process that removes soluble salts from water to render it suitable for drinking, irrigation or industrial uses.
With limited sources of fresh water available to growing populations, finding new sources of potable water is an increasingly important issue. Improved methods of water treatment are making desalination plants a more attractive method for solving this problem.
Today there are two main desalination technologies, based on membranes and thermal processes.
Membranes desalination uses the principle of osmosis to remove salt and other impurities, by transferring water through a series of semi-permeable membranes. Membranes desalination includes Reverse Osmosis, Nanofiltration, Electrodeionization, Electrodialysis reversal.
Thermal desalination uses heat, often waste heat from power plants or refineries, to evaporate and condense water to purify it. Such technologies include multiple-effect distillation (MED), multi-stage flash evaporation (MSF), Vapor compression.
Some of the technologies to be applied to this type of process are listed to follow:
SODIUM HYPOCHLORITE PRODUCTION THROUGH ELECTROLYSIS
Gemwater is proud to present the range of products for the Sodium Hypochlorite Production. Thanks to the integration of qualified personnel to the existing structure and the creation of strategic alliances, Gemwater is able to realize any size of plant, following any type of Standard requirement from Customer and End Users.
Electrochlorination is the preferred system to control biofouling in piping and in system which use big quantities of seawater for cooling. Electrochlorination plants are present in several industrial fields such as in Power plants, Refineries, Desalination plants and others.
The core of the plant is the electrolysis section which provides the hypochlorite solution, through electrolysis of seawater or brine. The type of electrodes devices depends on the different application foreseen.
We may identify two main categories which are described in detail in the dedicated sections, depending on the raw feed fluid interested (seawater or artificial brine).
In hypochlorite production from seawater, electrode cells can be ‘plate type’ electrodes. The cells are of different sizes, modular, and combined they can provide any range of production required.
In offshore installations the preferred electrode cells are named Concentric Tubular Electrodes (CTE), characterized by easy handling and maintenance, no requirement of acid cleaning, very compact layout.
Sodium Hypochlorite production from brine is used in the disinfection for potabilization, in agriculture, in chemical industries, in housekeeping market, in fertilizers, pharmaceutical and in many other fields. In this case, electrode cells can be membrane or diaphragm type electrodes.
Some of the technologies to be applied to this type of process are listed to follow:
Nowadays the problem of the volume of wastewater that requires treatment, is becoming more and more one of the main issues toward the public perception of industrial impact on the environment.
Thanks to the integration of qualified personnel to the existing structure and the aquisition of a dedicated company, Gemwater is able to design and build the technical solution in order to MINIMISE the liquid discharge and the environmental impact, following any type of Standard requirement from Customer or End Users.
Zero Liquid Discharge (ZLD) describes a process that tends to completely eliminate liquid discharge from a system. The goal is to minimize process wastewater in an economically feasible manner. The other aim is to produce the clean streams suitable for reuse elsewhere in the facility.
The ZLD treatment can be thermal and/ or non-thermal systems. Here to follow some of the technologies that Gemwater provides in Zero Liquid Discharge application.
