MBR Integrated Wastewater Treatment Machine: Reclaimed Water as Urban Secondary Water Source

The reclaimed water produced by MBR integrated sewage treatment equipment serves as a vital secondary water resource for modern cities. Supported by advanced MBR membrane separation technology, the treated effluent features near-zero suspended solids (SS), turbidity below 0.5 NTU, and high removal rates of COD and ammonia nitrogen. Its stable water quality fully meets national standards, enabling direct reuse in a wide range of non-potable applications.

Six Major Reuse Applications of MBR Reclaimed Water (Per GB/T 18919)

In accordance with the national standard Classification of Urban Wastewater Reuse (GB/T 18919), reclaimed water from MBR integrated systems is applicable to six core fields:

1. Municipal Miscellaneous Water

Ideal for municipal maintenance and indoor water-saving scenarios where water contacts surfaces but is not ingested:

• Toilet flushing: The largest domestic reuse scenario for malls, office buildings, hotels and residential compounds.
• Road maintenance: Street washing, dust suppression and road spraying.
• Landscape irrigation: Public green belts, residential lawns, park turf, golf courses and highway greenbelts.
• Vehicle washing: Water supply for commercial car wash stations.
• Construction water: Concrete curing, on-site dust suppression and infrastructure construction.
• Fire protection water: Backup supply for fire hydrants and water cannons.
• Chiller makeup water: Supplementary water for central air conditioning cooling towers.

2. Agricultural & Forestry Irrigation

The MBR process thoroughly eliminates harmful bacteria and partial salts. After disinfection, the effluent supports:

• Farmland irrigation: Fibre crops, dry-land grains and open-field vegetables.
• Forest, grass and flower irrigation: Commercial forests, nurseries and flower bases, compatible with precision drip irrigation systems.

3. Industrial Process Water

Customizable membrane modules adjust effluent quality to match diverse industrial water demands:

• Circulating cooling water: Makeup water for open recirculating cooling systems and once-through cooling water.
• Boiler feed water: Supplementary water for low & medium-pressure heating boilers.
• Washing water: Slag flushing, ash washing, smoke abatement dust removal and general industrial cleaning.
• Production process water: Chemical rinsing, mineral processing, oilfield water injection and slurry dilution.

4. Landscape Environmental Water

Clear, odorless and harmless treated water fits scenic water projects:

• Replenishment for landscape rivers & lakes: Sustains ecological flow in urban park waterways and inland rivers.
• Constructed wetland recharge: Nourishes wetland vegetation and purifies surrounding water bodies.
• Ornamental fountains: Water supply for urban decorative fountain facilities.

5. Ecological Restoration Water

• Ecological base flow supplementation: Maintains stable water volume for surface ecological systems.
• Surface & underground water recharge: Recharges rivers and replenishes groundwater after secondary wetland purification.
• Groundwater infiltration: Prevents seawater intrusion and balances underground water tables.

6. Special Scenario Applications

• Snowmaking & deicing: Raw water for ski resort artificial snow production and urban winter road deicing.
• Water source heat pump circulation: Circulating medium for HVAC heat pump systems.

Water Quality Safety Compliance

Effluent from MBR integrated units fully complies with national standards including The Reuse of Urban Recycling Water — Municipal Miscellaneous Water Quality (GB/T 18920), making it safe for all above reuse cases.

Though reclaimed water is strictly prohibited for direct drinking, it completely replaces tap water for municipal cleaning, irrigation, washing and industrial cooling. It drastically cuts freshwater consumption and operational water costs for property, industrial and municipal projects.

Global Application Differences

In China, municipal miscellaneous use and industrial circulating cooling dominate current reclaimed water adoption. Meanwhile, countries including the United States, Japan and Israel have widely adopted reclaimed water on a large scale for toilet flushing, landscape & farm irrigation, street cleaning, car washing, fountain systems and cooling equipment makeup water.

Conclusion

Reclaimed water from MBR integrated wastewater treatment machines covers dozens of specific scenarios across six sectors: municipal engineering, construction, manufacturing, agriculture and ecological restoration.

Nearly 400 cities nationwide face varying degrees of freshwater shortage. MBR all-in-one treatment systems turn waste sewage into reusable water resources, acting as a core solution to relieve urban water scarcity challenges.

If you have specific project requirements, feel free to contact our technical team for customized MBR process solutions tailored to your site conditions and water reuse targets.