Author: Vanessa 13 Mar. 2025 Category: Applications
The global water resource crisis is approaching at an alarming speed-United Nations data show that by 2030, the global freshwater supply gap will reach 40%, and about 80% of wastewater is discharged directly without treatment each year, exacerbating the crisis. In this battle for survival, Trenntech filtration technology is like a silent guardian, from the wastewater pool of chemical plants to the seawater desalination plant in the desert, building a lifeline for the recycling of water resources.
1. Industrial wastewater: Transformation from pollution source to resource library
Industrial wastewater has complex components, and heavy metals, organic matter, and suspended matter are interwoven into a “death formula”. Traditional treatment processes are inefficient and costly, but Trenntech’s modern filtration technology is rewriting the rules of the game:
Membrane separation technology:
Reverse osmosis (RO) membranes can intercept 99.8% of ionic pollutants. A chemical park in Germany uses a “ultrafiltration + RO” combination process to increase the reuse rate of chromium-containing wastewater from 35% to 90%, saving 800 euros in new water procurement costs annually.
Electrocatalytic filtration:
Graphene electrode materials decompose organic toxins through redox reactions. After being applied by a printing and dyeing company in Berlin, the COD value of wastewater dropped from 2000mg/L to below 50mg/L.
Intelligent quality-based reuse:
The distributed filtration system based on the Internet of Things can grade cooling water, cleaning water, etc. Shanghai Baosteel has achieved a new water consumption of 2.3m³ per ton of steel through quality-based reuse, reaching the international advanced level.
2. Municipal sewage: Give every drop of water a new life
More than 10 billion cubic meters of domestic sewage is produced every day in the world. Filtration technology has turned it from a “burden” to the “second water source of the city”:
MBR membrane bioreactor:
The PVDF hollow fiber membrane with a pore size of 0.1μm increases the concentration of activated sludge to 8000mg/L. The effluent of a recycled water plant in Beijing meets the surface Class III standard and is used for landscape water replenishment in the Olympic Park.
Nano adsorption materials:
Iron-loaded activated carbon can specifically adsorb phosphorus. The Singapore “New Water” project converts domestic sewage into direct drinking water through three-stage filtration, accounting for 40% of the national water supply.
Heat recovery:
The Hammarby sewage plant in Stockholm, Sweden integrates filtration and waste heat utilization systems, extracting 2500MWh of heat energy per day to meet the heating needs of 10,000 households.
3. Desalination: Ask the ocean for answers
13,000 desalination plants around the world produce 95 million tons of fresh water every day. Filtration technology is the core of breaking through the salt barrier:
Energy recovery device (ERD):
The Jebel Ali desalination plant in Dubai uses PX pressure exchangers to reduce the energy consumption of the reverse osmosis system from 5kWh/m³ to 2.8kWh/m³, and the single plant produces 636,000 tons of fresh water per day.
Ultrafiltration pretreatment:
Intercepting algae and colloids in seawater, the Israeli Sorek plant uses the “ultrafiltration + RO” combination to reduce the cost per ton of water to US$0.52, rewriting the water pattern in the Middle East.
Solar drive:
Saudi Arabia’s NEOM Smart City has built the world’s largest photovoltaic desalination project, equipped with Tehen corrosion-resistant titanium alloy filter elements, with the goal of achieving zero-carbon water supply.
4. Agricultural water conservation: a filtration revolution in the fields
Agriculture consumes 70% of the world’s fresh water, and precision filtration technology is solving the problem of extensive water use:
Drip irrigation filter:
The stacked filter element intercepts sediment and algae. The Israeli Netafim system saves 50% of water in cotton planting and increases the yield by 30%.
Aquaculture water treatment:
The combination of protein separator + biological filter bed makes the recycling rate of aquaculture water reach 95%, and the Norwegian salmon factory achieves zero wastewater discharge.
Rainwater collection:
The Fraunhofer Institute in Germany has developed an intelligent roof filtration system, which adjusts the filtration accuracy through meteorological data linkage. A community in Berlin collects and uses 12,000 tons of rainwater annually.
The rebirth of every drop of water is a victory for civilization. When the residents of Saudi NEOM drink fresh water from the Red Sea, and when the beautiful scenery of fish swimming in the shallows reappears in Beijing Qinghe, these scenes show that filtration technology is not only an engineering technology, but also the crystallization of wisdom of human reconciliation with nature. Contact Trenntech for professional water treatment solutions