/ CASE FILE 02 · EPC DOCUMENTARY · PUBLIC RELEASE

Desalinating 2,000 m³ per day under C5-M corrosive sea breeze
in absolute silence.

A 2,000 m³/day Seawater Reverse Osmosis (SWRO) plant engineered, factory-tested, and commissioned in 14 weeks for a 5-star luxury resort in the Caribbean. This is the field record — not the brochure.

Request System Audit

CAPACITY

2,000m³/d

FEED TDS

38,500ppm

ACOUSTIC RATING

< 65dB(A)

UPTIME (12 MO)

99.95%

System Technical Specifications

Engineering Data Sheet

Energy Consumption

2.8 kWh/m³

Danfoss Isobaric ERD Integration.

High-Pressure Piping

SS2507

Super Duplex. Immune to chloride pitting.

Acoustic Treatment

< 65 dB(A)

50mm acoustic foam + Water-lubricated pumps.

Deployment Format

40HQ Container

C5-M Marine Epoxy Coated.

/ EXECUTIVE SUMMARY

In late 2022, a premier luxury resort developer in the Caribbean faced a critical infrastructure hurdle. Expanding their villa footprint required an additional 2,000 m³/day of potable water, but relying on municipal pipelines or barged water was financially unsustainable. WANDONG ENVIRO was contracted to deliver a turnkey containerized SWRO desalination plant that could operate invisibly.

Our engineering team architected a 100% plug-and-play solution utilizing SS2507 Super Duplex piping, Danfoss Isobaric Energy Recovery Devices (ERD), and custom acoustic-dampened containers. By eliminating the need for local civil construction and drastically lowering the specific energy consumption to 2.8 kWh/m³, the system achieved a payback period of just 1.8 years while supplying WHO-grade drinking water to the entire island.

/ MODULE 02 — THE RAW REALITY

The site refused to cooperate.

Three constraints that would have killed a standard industrial RO design. We documented them on day one.

DEADLY CONSTRAINT · 01

C5-M MARINE ENVIRONMENT

Extreme Sea Breeze Corrosion

Located just 50 meters from the shoreline, the salt fog is relentless. Standard SS304 or even SS316L stainless steel manifolds would pit, rust, and leak within months under 65 bar of pressure.

DEADLY CONSTRAINT · 02

ZERO ACOUSTIC POLLUTION

Strict Acoustic Limits

The plant was sited near luxury guest villas charging $1,000+ per night. Traditional high-pressure centrifugal pumps generating 90+ dB(A) of industrial whining noise were absolutely unacceptable.

DEADLY CONSTRAINT · 03

NO LOCAL CIVIL WORK

Zero Local Engineering Support

The island lacked skilled welders, electricians, and civil contractors. Building a concrete pump house and assembling loose pipes on-site would cause massive delays and budget overruns.

/ MODULE 03 — THE ENGINEERED CURE

We didn't just supply equipment.
We engineered a paradigm shift.

Here is exactly how our engineering team neutralized the site's deadly constraints.

CURE FOR CONSTRAINT 01

Super Duplex & C5-M Armor

We upgraded all high-pressure manifolds to SS2507 Super Duplex stainless steel. The 40HQ container and internal skids were sandblasted and coated with a 3-layer C5-M marine epoxy. It thrives in salt fog.

CURE FOR CONSTRAINT 02

Ultra-Silent Architecture

We utilized water-lubricated Danfoss axial piston pumps to eliminate mechanical vibration. The container interior was lined with 50mm acoustic foam, dropping operational noise to < 65 dB(A) at 1 meter. Guests sleep soundly 20 meters away.

CURE FOR CONSTRAINT 03

100% Factory-Tested Plug & Play

The entire SWRO plant was pre-plumbed, pre-wired, and wet-tested at 80 Bar in our facility. It arrived on the island ready to run. Connect the beach well intake, plug in the power, and produce water.

/ MODULE 04 — ENGINEERING BLUEPRINT

A 4-stage train designed for absolute reliability.

We integrated world-class components (Danfoss, DOW, Siemens) into a highly compact footprint. By utilizing Isobaric Energy Recovery Devices (ERD), we slashed the power consumption by 60% compared to standard SWRO systems.

01 //

Beach Well Intake & Pre-treatment

Multi-Media Filtration (MMF) + 5µm Security Filters. Guarantees SDI₁₅ < 3.0.
02 //

High-Pressure Extrusion (65 Bar)

Danfoss Axial Piston Pumps + ERI™ Isobaric ERD. Specific energy: 2.8 kWh/m³.
03 //

Single-Pass SWRO Stack

DOW FilmTec™ SW30HRLE-400 elements. 99.8% salt rejection.
04 //

Post-Treatment & Sterilization

Calcite remineralization for pH balance + UV-C disinfection for WHO compliance.

3D CAD / P&ID DRAWING

Full skid isometric CAD & P&ID (DWG-WD-2023-CB-PID-002)
available during technical consultation.

FIG. 04.1 — PROCESS BLOCK FLOW EXCERPT

/ MODULE 04.5 — THE PARAMETER SHIFT

The Chemical Verdict.

Parameter	Feed Water (Raw)	Permeate (Output)	WHO Standard
Total Dissolved Solids (TDS)	38,500 mg/L	< 150 mg/L	< 500 mg/L
Turbidity (NTU)	15.0 - 25.0	< 0.1	< 5.0
Silt Density Index (SDI₁₅)	> 6.0	< 2.5	N/A (RO Feed < 3)
Boron (B)	4.5 mg/L	< 0.5 mg/L	< 2.4 mg/L

// MODULE 05 — FACTORY ACCEPTANCE TEST

Witnessed FAT. 72 hours. Zero compromises.

FAT DATE: 2023-03-12 → 2023-03-15

WITNESS: Client QA via Video Link

RESULT: PASS · 0 NCR

PLAY FAT HIGHLIGHTS

REC ● WANDONG WORKSHOP 01 · BAY A · 14.03.2023 10:15

HYDRO TEST

80 BAR · 60 MIN

PERMEATE TDS

210 ppm @ 25°C

SPECIFIC ENERGY

2.75 kWh/m³

NOISE @ 1m

63 dB(A)

// MODULE 06 — BILL OF MATERIALS (EXCERPT)

The physical evidence.

Every line item below is in-service in the Caribbean today. 100% Tier-1 global supply chain.

P/N · WD-SWRO-2000-SD

SS2507 SWRO Skid

Super Duplex High-Pressure Manifold

P/N · DANFOSS-APP

Danfoss HP Pump + ERD

Axial Piston Pump & Isobaric ERD

P/N · DOW-SW30HRLE

DOW FilmTec™ Membranes

99.8% Rejection Seawater Elements

P/N · WD-CDS-SEKO

Precision Dosing Skid

Antiscalant & SMBS Dosing (SEKO Pumps)

P/N · WD-SCADA-S7

Siemens PLC Control Panel

S7-1200 PLC + 10" HMI + Remote IoT

P/N · WD-CTR-40HQ-AC

Acoustic 40HQ Container

C5-M Painted, Soundproofed, Air-Conditioned

/ MODULE 07 — DEPLOYMENT DIARY

14 weeks. 4 milestones. Documented.

2022.11.05 → 2022.12.15 · 6 WEEKS

Design & Engineering

Acoustic engineering phase. Container interior lined with 50mm sound-absorbing foam. P&ID frozen on day 24.

2023.01.10 → 2023.03.15 · FAT

Fabrication & Factory Acceptance

SS2507 welding completed. 72-hour wet-run FAT witnessed by client via video link. Noise level verified at 63 dB(A).

2023.03.20 → 2023.04.25 · TRANSIT

Ocean Freight & Site Erection

Shipped via standard 40HQ containers. Dropped onto pre-poured concrete slab at the resort. Zero local welding required.

Shipping Containerized SWRO Plant to Caribbean

2023.05.02 · GO-LIVE

Commissioning & Handover

First permeate produced. Water quality verified by local health authority. Resort achieved 100% water independence.

/ MODULE 08 — FINANCIAL VERDICT

The ledger doesn't lie.

Verified by resort finance team. 12-month post-commissioning data.

ANNUAL OPEX SAVING

\$450K

vs. previous cost of barging fresh water from the mainland. Net of electricity and maintenance budgets.

WATER PRODUCTION COST

\$0.65/m³

Driven down by the Danfoss Isobaric ERD, which recovers 96% of the pressure from the brine reject stream.

VERIFIED

PAYBACK PERIOD

1.8 yrs

Against a 15-year asset life. The resort achieved complete water independence in under 24 months.

WATER COST

\$0.65/m³

REPLACEMENT CYCLE

5 YRS

CO₂ AVOIDED

850 t/yr

COMPLIANCE

WHO POTABLE

*Includes complete P&ID, BOM excerpt, and detailed OPEX calculation model.

/ MODULE 09 — THE CROSS-BORDER STANDARD

No Matter the Industry,
Our Baseline Stays the Same.

1. Zero Civil Work

100% skid-mounted and containerized. No site construction, no foundations, no delays.

2. Factory-Direct

No middlemen. No markup chains. The lowest Total Cost of Ownership in the industry.

3. 100% FAT Tested

Video-verified Factory Acceptance Testing before shipping. What you see is what you get.

4. Lifetime Support

Zero downtime. We provide 24/7 video troubleshooting and fast-track global air-freight for 100% genuine parts.

/ MODULE 10 — VOICE OF CLIENT & TECH Q&A

Words from the men who signed the cheque.

We needed 2,000 cubic meters of water a day, but we couldn't have a noisy industrial plant ruining the guest experience. WANDONG delivered a completely silent, containerized system that sits right behind our utility building. It's been running flawlessly.

CITATION

Director of Engineering

Luxury Resort Group · Caribbean

Q.01 · ACOUSTICS

How did you achieve < 65 dB(A) with high-pressure pumps?

We utilized water-lubricated axial piston pumps (Danfoss) which inherently produce less vibration than centrifugal pumps. The entire 40HQ container was lined with 50mm acoustic foam, and all pipework was vibration-dampened using flexible high-pressure hoses at critical junctions.

Q.02 · CORROSION

What prevents the sea breeze from destroying the skid?

All high-pressure wetted parts are constructed from SS2507 Super Duplex stainless steel. The container and skid frames undergo sandblasting followed by a 3-layer C5-M marine-grade epoxy coating, specifically formulated to withstand severe salt-fog and coastal humidity.

Q.03 · GLOBAL LOGISTICS

How do you handle shipping for massive plants?

All systems are precision-engineered to fit inside standard 20ft or 40HQ shipping containers. No expensive flat-rack shipping is required. We save you massive ocean freight costs.

Q.04 · INSTALLATION

We lack local engineers. How do we install it?

100% Plug & Play. We finish all internal piping and electrical wiring in our China factory. Your local plumbers simply connect the raw water inlet and power supply. We also provide 24/7 video guidance.

Q.05 · CHEMICAL SUPPLY

Do you supply the antiscalant chemicals?

We supply the automated Dosing Skid, but not the chemical liquid itself. Chemicals incur massive sea freight costs. As a professional manufacturer, we provide the exact dosing formula so you can buy locally, saving you thousands of dollars in freight.

Q.06 · ENERGY EFFICIENCY

Island electricity is expensive. How do you reduce power consumption?

We integrate Danfoss Isobaric Energy Recovery Devices (ERD) directly into the high-pressure manifold. The ERD captures up to 96% of the kinetic energy from the high-pressure brine reject stream and transfers it to the incoming feed water, slashing overall power consumption to just 2.8 kWh/m³.

MODULE 11 · PROOF OF LIFE · LIVE SCADA SNAPSHOT

UPDATED 60s AGO

FLOW NOW

83.5 m³/h

PERMEATE TDS

185 ppm

RECOVERY

42.5%

DATA SOURCE: WANDONG NOC · Tag stream WD-CB-2023 · SHA-256 signed at minute boundary.
Available for client due-diligence walkthrough.

Core Systems Deployed in this Project:

Containerized SWRO Systems Post-Treatment UV Sterilization

// Explore Similar Environments

-38°C Extreme Cold

Yukon Gold Mine ZLD

>20k mg/L COD

Desert Landfill Leachate

// MODULE 13 — INITIATE PROTOCOL

STOP ADAPTING TO EQUIPMENT.
LET IT ADAPT TO YOUR INDUSTRY.

Every sector faces unique discharge limits and spatial constraints. Don't settle for off-the-shelf compromises. Submit your exact parameters, and our engineering team will architect a custom, zero-civil-work solution guaranteed to perform.

INITIAL RESPONSE

1-ON-1

CUSTOM PROPOSAL

CONSULTATION FEE

// SECURE YOUR SUPPLY CHAIN

Request Firm Quote & 3D Layout

Receive a custom P&ID and Factory-Direct project budget within 48 hours.

WORK EMAIL *

CAPACITY *

RAW SOURCE

RAW WATER REPORT (TDS, BOD, ETC.)

DROP FILE OR CLICK

.PDF / .XLSX / .CSV / MAX 10MB

NOTES & TARGET OUTPUT STANDARD

AVG. RESPONSE: < 4 HRS · NDA AVAILABLE ON REQUEST

Desalinating 2,000 m³ per day under C5-M corrosive sea breeze in absolute silence.