Use Water More Than Once Where It Makes Engineering Sense

Water recovery can reduce mains consumption, wastewater discharge and operating cost.

But the objective should not be to recover the highest possible percentage of water regardless of complexity.

The objective is to identify which water streams can be reused reliably and economically.

Potential Recovery Sources

These can include:

• RO concentrate
• Final rinse water
• Cooling tower blowdown
• Condensate
• Process wash water
• Selected wastewater
• Rainwater
• Treated effluent

Start With the Water Balance

Before selecting technology, Hydra-Clear establishes:

• Where water enters the site
• How much each process consumes
• Where it leaves
• Which streams are continuous
• Which streams vary
• Contamination levels
• Potential reuse applications

Treatment Technologies

Recovery systems may incorporate:

• Filtration
• Ultrafiltration
• Activated carbon
• Ion exchange
• Nanofiltration
• Reverse osmosis
• UV
• Chemical conditioning

RO Concentrate Recovery

RO reject still contains water.

Whether it should be recovered depends on the concentrate chemistry.

Further recovery increases the concentration of scale forming salts and silica, so the chemistry must be modelled before increasing overall system recovery.

Economics

We consider:

• Mains water cost
• Wastewater cost
• Energy
• Chemicals
• Consumables
• Maintenance
• CAPEX
• OPEX
• Payback

The most sustainable water is often the water you don't need to buy again.

Call 0800 999 6770 to discuss a site water balance.