Contact a Systems Specialist to discuss your water purification needs.

• Pretreatment
  To improve the performance and to protect your purification equipment, pretreatment is of vital importance to every water system. Hydro will customize the proper pretreatment system to protect your downstream water purification equipment.  Hydro analyzes your incoming water to properly design your pretreatment equipment.

  Pretreatment removes contaminants such as particulates, suspended solids, organics, hardness, chlorine and chloramines that can affect other downstream treatment processes or final water quality.  Pretreatment equipment is designed into water systems to eliminate premature fouling of Reverse Osmosis membranes and to minimize interference with the ion exchange process.  RO is the optimum pretreatment system for deionization and other final treatments.

  • Carbon Filters
    Carbon Filters utilize granular activated carbon made from select grades of coal with an even but high distribution of micro and macro pores.  Activated carbon with a highly porous structure is efficient in removing a broad spectrum of organics, chlorine and chloramine.  Carbon filters are used to prevent these contaminants from fouling reverse osmosis membranes or ion exchange resins.
     
  • Turbidity Filters
    Turbidity filters are a form of depth filtration whereby suspended particulates such as sand, silt and clay are removed from water by entrapment or adsorption in a complex media matrix.  This process will enhance the performance of downstream equipment by removing these larger solids before the water reaches its primary or final stages of treatment.  Turbidity filters prevent fouling of other pretreatment components and reverse osmosis membranes.
     
  • Water Softeners
    Water softeners remove hardness minerals, such as calcium and magnesium.  High hardness can cause scaling an damage to downstream equipment.  Through an ion exchange process, resin removes hardness minerals and replaces them with sodium, which will not impart damage to membranes.  Softening resins consist of high capacity synthetic cation exchange resins for maximum regeneration efficiency.
     
  • Pre- & Post-Filtration

   

• Primary Treatment
  Primary Treatment removes dissolved solids and salts from the feed water source.  Common primary treatment components include reverse osmosis, mixed-bed deionization, two bed deionization (cation/anion separately), electro deionization or a combination of these processes.
   
  • Reverse Osmosis Systems
    Hydro's Reverse Osmosis Systems provide an economical and efficient method for the purification of tap water. RO is the optimum pretreatment system for deionization and other final treatments. We provide a wide range of flow rates and capacities from point-of-use laboratory systems to high volume process manufacturing. Systems are skid mounted, pre-plumbed and wired. Units can include control panels that are UL listed for central monitoring and control.
    
    Hydro's Reverse Osmosis Systems purify water by utilizing a membrane separation process to remove dissolved salts, macromolecules, colloids and particulates.  Water purified by reverse osmosis is often suitable for a variety of applications and manufacturing processes and is commonly used as pretreatment for deionization.
    
    The most important advantage of reverse osmosis systems is the monetary savings, with operating cost 1/10 of the cost of distillation.  Reverse osmosis as pretreatment extends the capacity of downstream deionization by as much as six to ten times, thus reducing total operating cost. 
    
    Reverse osmosis systems are self-contained cabinet type (small production) or skid type (large production) and ready for installation.  These systems are custom built and equipped with monitoring and instrumentation to observe water quality, membrane efficiency, flows and pressures.  Membrane selection is based upon feed water quality.  A wide variety of systems are available with varying flow capacities and average salt rejections up to 99 percent.
     
    • Line Pressure RO System
    • Series A RO System (75-365 gallons per day)
    • Series C RO System (590-2920 gallons per day)
    • Series D RO System (3-23 gallons per minute)
    • Double Pass RO
    • RO^2®
      
       

  • Mixed-Bed Deionization
    Mixed-bed deionization is an ion exchange process that removes virtually all dissolved, ionized contaminants from water.  Cation and anion resin are created by chemically bonding charged compounds to the beads.  A negative charge is bonded to the cation resin and positive charge to the anion resin.  Positively charged cations and negatively charged anions are removed by the respective resin.  The cation resin will release hydrogen ions and the anion resin will release hydroxide.  These ions will bond creating a pure water molecule.
    
    Mixed-bed deionizers produce TDS (Total Dissolved Solids) concentrations less than 0.01 ppm and resistivity greater than 18 megohm-cm.  Once exhausted, deionization resin is regenerated in a manner complying with use in pharmaceutical or food grade applications and can be put into service again.  Service type, high-quality resin with a superior regeneration method typically produce higher resistivity with lower TOC (Total Organic Carbon) re-introduction into the water.

   

• Post Treatment
  Post treatment components contain and distribute primary treated water while maintaining or enhancing its purity.  Post treatment equipment includes storage vessels, distribution pumps, ultraviolet sterilizers, post filtration, heating or cooling exchangers, and point-of-use deionization polishing if required.
   
  • Storage Tanks
    Storage tanks are used to contain primary or post treatment water, and may act as capacity buffers for primary treatment equipment.  This eliminates oversized primary treatment components feeding directly to a process.  Storage tanks must preserve the integrity of the water.  Materials of construction and manufacturing must adhere to quality standards for use with high purity water.  Materials vary between stainless steel, fiberglass reinforced plastic (FRP), or premium grade medium density plastics.  Stainless steel tanks are available as atmospheric or pressure rated vessels with varied interior and exterior finishes.  Stainless steel is also the material of choice for hot water applications such as water for injection (WFI) production in pharmaceutical processes.  Tanks constructed of other materials are atmospheric and usually vented with sub-micron filters.  Storage tanks are sized according to the demand of the water system or application.
     
  • Pumps
    Pumps are used for high purity water distribution, recirculation or pressurization.  Pumps are usually heavy duty rated for continuous use and models are available as horizontal or vertical configurations.  The internal components such as shafts, impellers, rotating assemblies and casings are usually manufactured from stainless steel.  Most NEMA standard motors are direct-coupled to the pump shaft for true alignment and variable frequency drives, or slow starts can be implemented depending upon the application.
     
  • Piping
    Piping used for transporting high purity water must receive equal quality consideration.  Suitable materials include polypropylene (PP), polyvinylidene fluoride (PCDF) and stainless steel (SS) and should not re-contaminate purified water.  Plastics can be joined by a number of welding techniques including the popular bead-and-crevice fee weld used in many pharmaceutical and electronics grade water systems.  Orbital welding is preferred with stainless steel and all techniques require certified experienced personnel adhering to strict installation guidelines.
     
  • Ultraviolet Sterilizers
    Ultraviolet Sterilizers are used to destroy microorganisms in water or to reduce total organic carbon (TOC) levels.  Ultraviolet lamps emit greater than 30,000 microwatt seconds per square centimeter of 254 nanometer UV radiation to destroy microorganisms.  Most water-borne pathogens are destroyed with less than 10,000 microwatt seconds per square centimeter.  Ultraviolet sterilizers used for TOC reduction are oversized for the nominal water flow rate and emit 185 nanometer UV radiation to photo-oxidize organics.  Carbon dioxide is created in this process but can be removed with deionization beds.
     
  • Disinfection Systems
    • Ultrafiltration
    • Ultraviolet Sterilization
    • Ozone & Chemical
      
       
• Integrated Control Panels
  Integrated controls for water purification systems can be simple or complex depending upon the application and the client.  Integrated controls include programmable logic controllers (PLC's), interfaces, monitoring devices, transmitting or signaling devices, power or motor controls, timers and relays, protection devices, switches, software and programming support.
   
  • Integrated Control Systems
    Integrated Control Systems can be implemented into any water purification system as monitoring or automating functionality.  All panel and control features are custom designed specific to the application and client needs.  Standard "small package" controller consist of monitoring pressures, flows, temperature, levels and running operation of specific components.  Equipment on/off cycles, time delays and other features can be packaged into smaller controllers.
    
    There is no limit to features and sophistication with larger PLC's which integrate communication, discrete, coordinated drives, process control and visualization.  Controller selection is based on I/O count and the complexity of control or monitoring desired.  Panels are usually designed with future expansion capabilities and integrate with standard ethernet LAN segments for management via networked computer systems.  Main controllers can also be integrated with secondary or subpanels for pneumatic, hydraulic and electrical operation.
    
    All panels are manufactured in Hydro's UL 508 panel shop with complete documentation and drawing packages available.  Programming, start-up and training is provided by our highly trained expert engineering team for complete user understanding and support.