---
title: "Smart Water Treatment System Based on W5500"
url: "https://maker.wiznet.io/Hannah/projects/smart-water-treatment-system-based-on-w5500/"
markdown_url: "https://maker.wiznet.io/Hannah/projects/smart-water-treatment-system-based-on-w5500/md"
type: "UCC: User Created Content"
author: "Vadim"
author_url: "https://github.com/vad7/WaterTreatment?tab=readme-ov-file"
editor: "WIZnet"
editor_url: "https://maker.wiznet.io/"
original_author: "Vadim"
original_url: "https://github.com/vad7/WaterTreatment?tab=readme-ov-file"
published: "2025-08-27"
language: "en"
tags: ["W5500", "Arduino"]
hardware: ["Arduino Due"]
likes: 0
views: 1467
comments: 0
source: "WIZnet Makers (https://maker.wiznet.io/)"
---

# Smart Water Treatment System Based on W5500

> Smart Water Treatment System Based on W5500: Automated Control for Iron, Manganese, and H₂S Removal

Original author: Vadim (source: https://github.com/vad7/WaterTreatment?tab=readme-ov-file)

## Components

- **Arduino Due** x 1 ([docs](https://www.farnell.com/datasheets/1682211.pdf))

## Documents and links

- [WaterTreatment](https://github.com/vad7/WaterTreatment) (code)
- [Blog](https://vad-7.blogspot.com/2019/12/blog-post.html)

## Article

## Smart Water Treatment Controller with Arduino DUE & WIZnet W5500

### 1. Project Overview

This project introduces a **next-generation water treatment controller** designed for households and small facilities with challenging groundwater conditions (high iron, manganese, hydrogen sulfide, and hardness).

At its core, the system uses:

**MCU**: Arduino DUE Core (ARM SAM3X8E)

**Ethernet**: WIZnet W5500 (stable TCP/IP networking with built-in web server)

**Key Sensors & Devices**:

BMP-based pressure sensor (0–6 bar, 0–5V)

4–20 mA water level sensor for 500 L storage tank

Load cell + HX711 for chlorine reagent tank

Flowmeter for proportional dosing

Autotrol 263 & Runxin F68C3 filter heads

Leakage/flood sensors, temperature sensors (DS18B20)

PZEM-004T v3 for energy monitoring

The goal: combine **robust automation, full sensor integration, and remote monitoring** into one embedded controller.

---

### 2. How the System Works

**Water Flow & Treatment**

Raw water → aeration tank → pump station → iron removal filter (Quantum DMI-65 + chlorine) → softener → household supply.

**Chlorine Dosing**

Flowmeter pulses drive proportional chlorine injection.

Tank weight monitoring ensures real-time chemical usage tracking.

**Filter Backwash & Regeneration**

Time-based and flow-based triggers.

Synchronization logic prevents simultaneous regeneration.

**Pump Station Control**

Pressure sensor + dry-run protection.

Overload detection via Modbus power meter.

**Web & Local InterfaceEthernet (W5500)** hosts graphical web UI with mobile support.

LCD2004 + keypad for local fallback control.

**Safety & Reliability**

12-hour auto-flush to prevent stagnation.

Backup float sensors for tank dry-run protection.

Leak/flood sensors trigger alarms.

---

### 3. Key Technologies

**WIZnet W5500 Ethernet**:

Ensures robust web interface and real-time remote monitoring.

Supports email/SMS notifications over network.

**HX711 Load Cell**: Monitors reagent tank weight continuously.

**4–20 mA Analog Input**: Provides industrial-grade tank level accuracy.

**PZEM-004T v3**: Power monitoring via Modbus RTU.

**RTC + EEPROM**: Reliable scheduling and long-term statistics logging.

---

### 4. Applications & Benefits

**Applications**

Household & industrial groundwater purification

Remote-managed small-scale water treatment plants

Smart home integration for water safety

**Benefits**

Prevents pump damage (dry-run & overload protection)

Extends filter media life with optimized regeneration cycles

Provides full visibility of system health via web dashboard

Scalable: easy to add more sensors, Modbus devices, or IoT cloud connectivity

---

### 5. Conclusion

This project demonstrates how **Arduino DUE + WIZnet W5500** can evolve a traditional water purification system into a **smart, connected, and resilient controller**.

👉 Key takeaway:
**“W5500 transforms a standalone water system into a networked, safe, and intelligent IoT solution.”**

---

Source: https://maker.wiznet.io/Hannah/projects/smart-water-treatment-system-based-on-w5500/