Xi'an DIEN Water Treatment Ultra-Pure Water Equipment Supports Accurate Water Use for Scientific Experiments at Changjiang River Scientific Research Institute
As a national scientific research institution directly under the Changjiang Water Resources Commission of the Ministry of Water Resources, Changjiang River Scientific Research Institute (CRSRI) has long been engaged in scientific research in core fields such as water resources, water environment, flood control and disaster reduction, and hydraulic engineering of the Yangtze River Basin. Its high-precision experiments, instrumental analysis and water environment monitoring impose extremely strict requirements on water purity. With professional ultra-pure water treatment technology, Xi'an DIEN Water Treatment Equipment Co., Ltd. has customized dedicated ultra-pure water treatment equipment and overall solutions for CRSRI, fully meeting the high-standard water demand of scientific research experiments and providing solid support for the accuracy of research data and experimental reliability.
I. Project Overview
This project customizes a centralized ultra-pure water treatment system for multiple research scenarios of CRSRI, including key laboratories, water environment monitoring centers and material analysis laboratories. It covers the whole process of raw water pretreatment, deep desalination, ultra-purification and terminal polishing treatment. The designed water production capacity meets the daily peak water demand of laboratories. The system adopts a fully automatic operation mode to ensure 24-hour stable supply of ultra-pure water. Xi'an DIEN provides one-stop services including solution design, equipment manufacturing, installation and commissioning, as well as operation and maintenance training, ensuring rapid project implementation and long-term stable operation.
Xi'an DIEN Ultra-Pure Water Equipment Supports Accurate Experimental Water Use at Changjiang River Scientific Research Institute
II. Raw Water Quality Problems
The raw water of the project adopts urban tap water. Although initially treated by municipal facilities, it still contains various impurities that interfere with scientific research experiments:
Ionic Impurities: Contains dissolved inorganic ions such as sodium, calcium, magnesium and potassium with high conductivity, directly interfering with trace element detection by precision instruments such as ion chromatography and ICP-MS.
Organic Pollution: Contains trace humic acid and detergent residues with high total organic carbon (TOC), easily causing HPLC baseline drift and miscellaneous peaks and affecting analytical accuracy.
Particles and Microorganisms: Contains tiny suspended solids, bacteria and algae, which easily block instrument pipelines, contaminate experimental samples and lead to failures in cell culture and molecular biology experiments.
Other Impurities: Trace heavy metals, endotoxins and dissolved silicon do not meet the water standards for water environment monitoring, material experiments and precision analysis in hydraulic scientific research.
III. Customer Requirements & Treatment Targets
Combined with the experimental characteristics of CRSRI and national standard GB/T 6682-2008 Water Specification for Analytical Laboratory Use, the core requirements are defined as follows:
Treated water shall meet Class I laboratory ultra-pure water standard: resistivity ≥18.2MΩ·cm at 25℃, TOC ≤5ppb, total bacteria ≤1CFU/mL, endotoxin ≤0.03EU/mL.
The system adapts to simultaneous water use in multiple laboratories with stable water supply and quick response, meeting the demands of precision experiments such as HPLC, mass spectrometry, atomic absorption and water environment trace analysis.
The equipment is equipped with full automatic control, real-time water quality monitoring and fault self-diagnosis functions to reduce operation and maintenance pressure on laboratory staff.
The system is safe, environmentally friendly, low in energy consumption and noise, suitable for laboratory clean environment. Water is available on demand to avoid secondary pollution.
IV. Solution
Xi'an DIEN adopts a multi-stage purification process of "Pretreatment + Double-stage RO Reverse Osmosis + EDI Electrodeionization + UV Oxidation + Terminal Polishing", equipped with self-developed ultra-pure water treatment equipment:
Pretreatment Unit: Adopts Multi-media Filter(Click to view equipment details), activated carbon filter and precision security filter to efficiently remove sediment, suspended solids, residual chlorine and macromolecular organics from raw water and protect subsequent core components.
Double-stage RO Reverse Osmosis(Click to view equipment details): Two-stage reverse osmosis membranes are connected in series with a desalination rate over 99.5%, deeply removing most ions, organics and microorganisms to produce primary purified water.
EDI Electrodeionization: Adopts continuous electrodeionization technology without acid-base regeneration, deeply removing residual ions and upgrading purified water to high-purity grade with stable resistivity ≥17MΩ·cm.
Ultra-Purification Unit: Equipped with 185nm/254nm dual-wavelength UV lamp to oxidize and degrade residual organics and kill bacteria; combined with polishing mixed bed resin and terminal 0.05μm sterile filter to further upgrade water quality.
Intelligent Control System: PLC full automatic control, real-time monitoring of resistivity, TOC, flow and other parameters, automatic start-stop, flushing and maintenance; equipped with remote monitoring interface for traceable water quality data.
Xi'an DIEN Ultra-Pure Water Equipment Supports Accurate Experimental Water Use at Changjiang River Scientific Research Institute
V. Treatment Effect
After commissioning and operation, all indicators exceed the design standards with remarkable results:
Qualified Water Quality: Water resistivity stably maintained at 18.25MΩ·cm (25℃), TOC≤3ppb, no bacteria detected, endotoxin≤0.01EU/mL, fully exceeding Class I ultra-pure water standards.
Stable & Reliable: The system runs 24/7 with sufficient and constant water quality. No pressure fluctuation during simultaneous water use in multiple laboratories, fully adapting to various precision experiments.
Intelligent & Convenient: Fully automatic operation with no on-duty staff required, automatic fault alarm and simple maintenance, greatly reducing laboratory operation cost.
Eco-friendly & Energy-saving: System water recovery rate over 65%, no acid-base waste discharge, low energy consumption and low noise, meeting the green environmental requirements of research institutes.
VI. Customer Feedback
The person in charge of the laboratory of Changjiang River Scientific Research Institute commented: The ultra-pure water treatment equipment provided by Xi'an DIEN Water Treatment features excellent performance and stable water quality, thoroughly solving the long-standing water use pain points in our scientific research experiments. The equipment is highly automated and easy to operate. The professional and efficient team provides thoughtful services from solution docking to installation and commissioning. The stable supply of ultra-pure water effectively guarantees the accuracy and reliability of water environment monitoring, hydraulic material analysis and precision experiments, making DIEN a trustworthy partner for scientific research water solutions.
In high-precision fields such as hydraulic scientific research, environmental monitoring and laboratory analysis, ultra-pure water treatment equipment is the core basic equipment to ensure accurate experimental data and reliable research achievements. Xi'an DIEN Water Treatment has been deeply engaged in ultra-pure water technology for many years, proficient in customized R&D and application of ultra-pure water equipment. It provides a full range of solutions from small laboratory units to large centralized water supply systems for differentiated water demand of research institutes, testing institutions, electronics, pharmaceutical and other industries. If your research institution or enterprise is faced with high-standard water challenges, welcome to contact Xi'an DIEN Water Treatment. We will lay a solid water quality foundation for your scientific experiments and production operation with professional technology, high-quality products and comprehensive services, supporting scientific research breakthroughs and high-quality development.
