Household Water Softener One Operating and One Standby in Mongolia

1. Project Overview

• Location: Mongolia

• Application: Single-family household

• Key Requirement: Continuous supply of softened water, 24 hours a day.

• System Capacity: 12 tons (12,000 liters) per day.

• Core Challenge: To ensure zero downtime for water softening, even during the control valve's regeneration cycle.

• Solution: A duplex "One-in-Use, One-on-Standby" water softening system.

2. Background & Problem Analysis

Mongolia's climate and geology often result in water sources with high levels of hardness minerals (Calcium and Magnesium). For a household requiring a consistent 12-ton daily supply, a single water softener is insufficient. The primary weakness of a single softener is its need to periodically enter a regeneration cycle.

•Regeneration Cycle: This is a process where the resin bed inside the softener is cleaned with a brine (salt) solution to restore its ion-exchange capacity. During this cycle (which can take 60-120 minutes), the softener cannot produce softened water. It either stops output or outputs hard water.

•The Problem of a Single Unit: If the household's water usage is continuous, the regeneration cycle would cause a direct interruption in the supply of softened water. This is unacceptable for applications like continuous heating systems, high-end appliances, and consistent comfort.

3. Solution: Duplex "One-in-Use, One-on-Standby" System

This system employs two identical water softeners, plumbed in parallel. Only one unit is active at any given time, while the other is on full standby.

System Configuration:

•2 x Water Softeners, each with a capacity rated for more than 12 tons/day to handle peak flows.

•Valving: A three-way motorized valve at the inlet and outlet to direct the water flow.

•Brine System: A shared or individual brine tank for salt.