Desalination Industry

Protecting the assets by controlling the water quality

According to the International Desalination Association, an estimated 18,000 desalination plants are spread across 150 countries, with reverse osmosis being one of the leading membrane-based technologies to remove dissolved salts and other impurities from oceanic or underground sources.

Desalination plants, by definition manufacturing facilities, are continuously trying to improve performance or efficiency. The major operational issues of today’s desalination facilities involve day-to-day monitoring of the complete process and careful preventive maintenance. Hach designs and builds a full range of on-line water analyzers that can be used to achieve process transparency at all stages of the desalination process, particularly for reverse osmosis water such as:

  • Sea Water RO
  • Brackish Water RO

For over 85 years, Hach ® has offered water analytical instruments for process, lab, and handheld applications. Hach makes water analysis better, faster, simpler, greener, and more informative.

With Hach ®, Desalination plants can:

    • Protect their asset by controlling the quality of the water they feed in their plant
    • Minimize the loss of produced water
    • Maximize the uptime of the plant
    • Provide safe potable water




 

Sea Water Intake

Naturally occurring constituents in sea water are often present in such quantities that they require additional actions for removal in the desalination process, in order to meet quality requirements for human consumption. Unwanted residues or byproducts can result from the carryover of these constituents to the RO stage.

Parameters Relevant to Sea Water Intake

  • pH
  • Conductivity/TDS/Salinity
  • Suspended Solids
  • Turbidity
  • Chlorine
  • ORP
  • Oil in Water
  • Total Organic Carbon
  • Bromide
  • Bromate
  • Boron

How to Measure:

Process solutions include online sensors that provide round-the-clock support for critical operational and process decision making.

 

Laboratory solutions include simple, reliable and accurate tests that support quality and compliance decision making.

Pre-treatment

Feed water pretreatment in desalination facilities is necessary to improve the quality of the feed water to the level of reliable operation of the RO membranes.

Parameters Relevant to the Pre-treatment

  • pH
  • Conductivity/TDS/Salinity
  • Turbidity
  • Total Organic Carbon
  • Hardness
  • Alkalinity
  • Chlorine

How to Measure:

Process solutions include online sensors that provide round-the-clock support for critical operational and process decision making.

 

Laboratory solutions include simple, reliable and accurate tests that support quality and compliance decision making.

Reverse Osmosis

Uncontrolled fouling or clogging of the membranes leads to increased maintenance, higher energy costs and a short membrane life. On-line monitoring of both chemical and biological key parameters allows you to take your process to the next level, while cutting back on unwanted expenses.

Parameters Relevant to Reverse Osmosis

  • Chlorine
  • Conductivity high range & low range
  • Turbidity low range
  • Total Organic Carbon
  • Boron
  • Alkalinity

How to Measure:

Process solutions include online sensors that provide round-the-clock support for critical operational and process decision making.

 

Laboratory solutions include simple, reliable and accurate tests that support quality and compliance decision making.

Post-treatment

The quality of the distributed water is of paramount importance as it concerns human health. Drinking water quality criteria require often a large set of physicochemical and biological analyses which are conducted prior to distribution by the local authority.

Parameters Relevant to Post-treatment

  • ph
  • Chloride
  • Manganese
  • Iron
  • Fluoride
  • Bromide (L)
  • Aluminum
  • Hardness
  • Boron
  • Chlorine
  • Sodium
  • Potassium

How to Measure:

Process solutions include online sensors that provide round-the-clock support for critical operational and process decision making.

 

Laboratory solutions include simple, reliable and accurate tests that support quality and compliance decision making.

Storing & Distribution

The quality of the distributed water is of paramount importance as it concerns human health. Drinking water quality criteria require often a large set of physicochemical and biological analyses which are conducted prior to distribution by the local authority.

Parameters Relevant to Storing &Distribution

  • pH
  • Chlorine
  • Turbidity
  • Hardness
  • Fluoride
  • Total Alkalinity
  • Boron
  • Total Colloid

How to Measure:

Process solutions include online sensors that provide round-the-clock support for critical operational and process decision making.

 

Laboratory solutions include simple, reliable and accurate tests that support quality and compliance decision making.