Research and Development Experimental Center

Technology Research and Development

　　As a national high-tech enterprise, Hezhong always regards technology research and development as the foundation of enterprise development. We focus on product quality and industry-leading technologies, and tirelessly pursue technological innovation. We pay attention to industry needs, introduce advanced foreign technologies, and improve them to enhance their economic efficiency. We have invested nearly 100 million yuan to establish a research and development center and a pilot plant, dedicated to providing high-quality products, accurate solutions, and the most timely customer service.

　　Hezhong's research areas cover various cutting-edge technologies in water treatment, providing high-quality products and efficient process solutions for nearly 2,000 industrial water treatment customers in 50 countries worldwide.

R&D Experimental Center

　　Established in 2005, the R&D Experimental Center has a history of 15 years and has established a joint laboratory with the University of Mining and Technology. The experimental center has various experimental instruments and can perform most water quality tests, providing timely and efficient service to solve practical customer problems.

　　The R&D Experimental Center can complete water quality analysis projects including: SDI value, oil content, COD, ammonia nitrogen, total nitrogen, total phosphorus, pH, potassium ion, calcium ion, magnesium ion, sulfate, chloride ion, acidity, alkalinity, conductivity, TDS, etc.; and membrane analysis projects including: maximum pore size, average pore size, and filtration accuracy of membrane sheets.

　　The R&D Experimental Center also has various membrane material synthesis simulation platforms, membrane material performance evaluation equipment, solid-liquid separation experimental testing; and filter element testing lines, SDI instrument testing lines, etc.

Experimental Center Instruments and Equipment

Biochemical Incubator

Suitable for water analysis and BOD determination, it is a dedicated constant temperature equipment for the cultivation and preservation of bacteria, fungi, and microorganisms, and can be used for the determination of microorganisms in water samples and filter element products.

Low-Temperature Cooling Circulating Pump

Suitable for various chemical and physical experiments that require low-temperature conditions, used to maintain a constant low temperature during the experiment.

Rotary Evaporator

Mainly used for concentration, crystallization, drying, separation, and solvent recovery. It is especially suitable for the concentration and purification of biological products that are easily decomposed and denatured at high temperatures.

Lifting Oil Bath

Used for constant temperature heating of the rotary evaporator, with excellent temperature control performance to ensure a constant temperature environment during the experiment.

Bubble Point Tester

Tests the bubble point pressure of the sample. The bubble point tester, also known as the integrity tester, is used for the accuracy and integrity testing of filter elements and filter materials.

Infrared Spectrophotometric Oil Content Analyzer

Measures the oil content in water samples using infrared spectrophotometry.

Multifunctional Intelligent Digestion Instrument

Performs digestion pretreatment of water samples such as COD, total nitrogen, and total phosphorus, using digital setting and display of heating temperature, and automatic control of heating temperature.

Multi-parameter Water Quality Analyzer

Can perform analysis and testing of conductivity, resistivity, TDS, and salinity.

Experimental Center Testing Items

Testing Items	Equipment Name	Testing Method Basis
Determination of Oil Content in Oily Wastewater	Infrared Spectrophotometric Oil Content Analyzer	HJ 637-2012 Water Quality Determination of Petroleum and Animal and Vegetable Oils Infrared Spectrophotometry
Filter Material Integrity Determination	Filter Element Integrity Test	GB/T 14041.1-2007 National Standard Test Method for Structural Integrity of Hydraulic Filter Elements
Determination of Evaporation Temperature and Temperature Range of Liquid Medium	Rotary Evaporator
Determination of Medium Viscosity	Viscometer	GB/T 10247-2008 Capillary Method
Determination of COD in Water	Multifunctional Digestion Instrument Multi-parameter Water Quality Analyzer	HJ/T399-2007 Determination of Chemical Oxygen Demand in Water Rapid Digestion Spectrophotometry
Determination of Ammonia Nitrogen in Water		HJ535-2009 Determination of Ammonia Nitrogen in Water Nessler Reagent Spectrophotometry
Determination of Total Phosphorus in Water		HJ670-2013 Determination of Phosphate and Total Phosphorus in Water Ammonium Molybdate Spectrophotometry
Determination of Total Nitrogen in Water		Ultraviolet Spectrophotometry
Determination of Chloride Ion in Water	Glassware	GB 11896-1989 Silver Nitrate Determination Method
Determination of Calcium and Magnesium Ions in Water	Glassware	GB/T 15452-1995 EDTA Titration Method
Determination of Nitrate in Water	Glassware	Methods for the Examination of Water and Wastewater (Fourth Edition, Supplementary Edition) Potassium Permanganate Titration Method
Determination of BOD in Water	Biochemical Incubator, BOD Meter	Methods for the Examination of Water and Wastewater (Fourth Edition, Supplementary Edition) Dilution Inoculation Pressure Measurement Method
Determination of Water Conductivity	Conductivity Meter	Methods for the Examination of Water and Wastewater (Fourth Edition, Supplementary Edition) Portable Conductivity Meter Method
Determination of Water pH	pH meter	Portable pH meter method in "Methods for Water and Wastewater Testing and Analysis" (Fourth Edition, Supplementary Edition)
Determination of water quality TDS	Rapid TDS meter	Electrode method
Determination of medium density	Hydrometer