解決策 Desalination for Municipal Water Supply

Municipal desalination brings reliable potable supply to coastal cities, islands and inland towns with brackish aquifers. Stark Water designs and integrates seawater RO (SWRO) and brackish RO systems with proven pretreatment, energy recovery, remineralization and SCADA control. Typical performance: salt rejection 98–99.7%, recovery 35–50% (seawater) or 65–85% (brackish), and specific energy ~2.5–4.0 kWh/m³ (SWRO) or ~0.7–1.5 kWh/m³ (brackish). We deliver drinking-water quality that meets regulatory targets with robust operations, training and lifetime support.

Desalination has become a vital solution for municipalities facing water scarcity due to population growth, climate change, and limited freshwater resources. By converting seawater or brackish water into potable water, desalination ensures a sustainable and reliable water supply for urban populations. STARK designs and delivers high-performance municipal desalination systems that integrate advanced membrane technologies, energy recovery devices, and robust pretreatment to ensure long-term efficiency, minimal environmental impact, and compliance with global drinking water standards.

Municipal Desalination Applications

Coastal Municipalities – Supplying cities located near the sea with a consistent source of potable water.
Island Communities – Providing reliable fresh water to remote islands where natural sources are limited.
Drought-Prone Regions – Securing municipal water supply during extended dry seasons or severe droughts.
Blending with Existing Sources – Supplementing surface or groundwater supplies to maintain quality and quantity.

Key Benefits

1. Sustainable Water Source – Reduces dependence on limited freshwater resources and mitigates drought risks.
2. High-Quality Output – Produces drinking water that meets or exceeds WHO and local regulatory standards.
3. Scalable Capacity – Modular designs allow for future expansion as municipal demand grows.
4. Optimized Energy Efficiency – Utilizes energy recovery devices to minimize operational costs and carbon footprint.

Our Solutions

Seawater Reverse Osmosis (SWRO) Plants

High-capacity desalination facilities designed for municipal-scale supply.

Brackish Water RO Systems

Cost-effective solutions for inland municipalities with saline groundwater sources.

Integrated Pretreatment Systems

Multimedia filtration, ultrafiltration, and chemical dosing for reliable RO performance.

Energy Recovery Integration

Pressure exchangers and turbines to maximize efficiency and reduce costs.

Specs & KPIs (typical ranges)

KPI	海水RO	汽水RO	Notes
Salt rejection	99–99.7%	98–99.5%	Element & operating window dependent
リカバリー	35-50%	65-85%	Optimized by temperature, scaling risk
Specific energy	~2.5–4.0 kWh/m³	~0.7–1.5 kWh/m³	With high-efficiency pumps; ERD for SWRO
Design flux	12–20 Lmh	14–24 Lmh	Seasonal/temperature dependent
Feed pretreatment target	SDI ≤ 3, turbidity < 0.5 NTU		Protects membrane surface
Permeate TDS	~250–500 mg/L	~100–300 mg/L	Final set by remineralization & blending
CIP trigger	ΔP +15–20%, conductivity drift or normalized flux loss		Trend-based control reduces fouling risk

Deliverables

Water balance and recovery analysis, energy model
P&ID, GA/Layout (nozzles, footprint, lifting points), and Electrical I/O list
SCADA graphics, alarm & interlock philosophy, FAT/SAT procedures
Commissioning checklist, O&M manuals, spare parts/BOM
Operator training and remote support SLAs

Case snapshots

Coastal City (SWRO) – 1,500 m³/d: Open-intake + DAF + UF pretreatment; SWRO with ERD. Energy ~3.1 kWh/m³, permeate TDS ~300 mg/L after remineralization; recovery 42%.

Inland Town (Brackish RO) – 800 m³/d: MMF + ACF + RO. Feed TDS ~3,000 mg/L, permeate TDS ~150 mg/L; recovery 75%; online turbidity & conductivity trending extended CIP cycles to 6 months.

Why Choose STARK?

STARK is a trusted partner for municipal desalination projects worldwide, offering a full-service approach from feasibility studies and pilot testing to turnkey plant delivery and after-sales support. Our engineering expertise ensures each system is tailored to site-specific conditions, achieving optimal water quality, operational reliability, and cost-efficiency. With proven references in challenging environments, STARK’s solutions provide peace of mind for municipalities seeking long-term water security.