Shanghai Tongjie pitches containerized emergency desalination for disaster response

Shanghai Tongjie is highlighting containerized emergency seawater desalination systems at Aquatech China for temporary water operations in disasters, droughts and construction sites. The company says the pre-tested units are built for fast deployment, variable feedwater conditions and reuse across multiple field missions.

Why it matters: - Emergency water operations often need potable water fast, before permanent infrastructure can be restored. - Shanghai Tongjie is positioning containerized SWRO systems as a way to move from crisis arrival to drinking water delivery with minimal on-site setup. - The systems are designed for temporary sites where technical staff, civil works and stable utilities may be limited.

What happened: - Shanghai Tongjie used Aquatech China to promote emergency seawater desalination systems for temporary operations. - The company framed the units as a fit for natural disasters, industrial construction projects and seasonal droughts. - The systems are presented as pre-engineered, mobile and self-contained.

The details: - Temporary water projects differ from permanent desalination plants because they may last only weeks or months and often lack fixed intakes, substations and concrete works. - Emergency systems are described as needing to withstand rough transport, run on mobile diesel generators and tolerate changing turbidity, organic load and salinity. - The company says the systems are built for non-specialist operators and are intended to maintain compliance with WHO drinking water standards. - Emergency planning starts with defining the raw water source, including coastal seawater, tidal estuaries, coastal lagoons or saline groundwater wells. - The systems are described as handling high total dissolved solids levels, with seawater SWRO operating at 55 to 70 bar and brackish water at 15 to 25 bar. - Raw water turbidity can swing from less than 1 NTU to more than 50 NTU during storm surge or flooding conditions. - Water duty is divided into three use cases: potable life-support water, hygiene and sanitation water, and dust suppression and utility water. - Potable water production includes reverse osmosis desalination, mineral stabilization and active disinfection. - Hygiene and sanitation water requires moderate TDS reduction below 500 mg/L plus microbiological disinfection. - Utility water can use preliminary filtration without reverse osmosis. - Typical emergency demand is described as 10 to 100 cubic meters per day for field camps and disaster clusters. - Containerized SWRO systems package the treatment train inside an ISO-standard 20-foot or 40-foot shipping container. - Factory integration includes feed pumps, floating suction strainers, multi-media sand and anthracite filters, dual-stage cartridge filtration, chemical dosing skids, high-pressure pumps, RO membranes, FRP pressure vessels and CIP cleaning equipment. - External connections are limited to camlock hose hookups for raw water, permeate and brine, plus a standardized electrical terminal block. - The systems are built to run on mobile three-phase diesel generators using variable frequency drives and soft-start controls. - PLC-based automation handles startup, flushing, pump priming, pressure ramping and diversion of off-spec permeate until conductivity reaches potable thresholds. - Shanghai Tongjie says the units include 4G, 5G and satellite IoT gateways for remote telemetry and diagnosis. - Container enclosures are built to ISO intermodal freight specifications with corner castings and forklift pockets. - The units can move by flatbed truck, cargo aircraft or Ro-Ro shipping without specialized oversize freight permits. - Before storage or redeployment, the membrane train undergoes CIP cleaning, sodium bisulfite preservation and winterization drainage where needed. - Properly preserved units can stay in hot standby for up to 12 months and be recommissioned within hours at a new site. - The FAQ says hookup to a prepared site typically takes 2 to 6 hours, with potable water flowing within 1 hour of startup. - The FAQ also says the systems can switch between seawater, brackish estuarine water and saline well water by adjusting pretreatment and operating setpoints. - External utility needs include a raw water source, three-phase power, a brine discharge path and permeate storage tanks.

Between the lines: - The pitch is aimed at buyers who need a water asset that behaves more like deployable infrastructure than a fixed plant. - Remote monitoring and standardized container logistics are a clear response to the operational constraints of disaster zones and temporary work sites. - The emphasis on preservation and redeployment suggests the commercial value is not just in first deployment, but in repeat use across multiple missions.

What's next: - Procurement teams are being asked to define deployment scenarios, transport limits, raw water extremes and population demand before issuing an RFQ. - Shanghai Tongjie says customers can submit those requirements to its emergency-response technical team to configure pre-tested emergency SWRO packages. - The company is signaling that future deployments will be tailored to site-specific logistics, utility access and water-quality conditions.