Evaporation Crystallization Knowledge Popularization: Principles and Legends of Evaporation Crystallization
Published Time:
2022-05-27
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Legend has it that more than 5,000 years ago, along the coast of what is now Weifang, Shandong Province, there lived a prehistoric tribe called Su Sha, whose leader was known as Su Sha Shi. While boiling fish in an earthenware pot, a wild boar suddenly ran past. Su Sha Shi gave chase, and upon returning with his catch, he found the seawater in the pot had boiled away, leaving behind a layer of fine white powder at the bottom. This salty and savory powder, which enhanced the flavor of the boar meat, was salt left after the seawater had evaporated. The Warring States period historical text "Shi Ben" records this story of Su Sha Shi boiling seawater to obtain salt.
This process of heating seawater to evaporate the water and obtain crystalline salt, a solid-liquid separation process, is called evaporation crystallization. This technology is widely used in seawater desalination, chemical wastewater treatment, pharmaceuticals, and light industry.
With the rapid development of China's economy, environmental problems have become increasingly prominent. Modern industries consume large amounts of water and discharge large quantities of wastewater with high pollutant concentrations. Water scarcity and environmental pollution have, to some extent, restricted the development of modern industries. To address water scarcity and environmental pollution, utilizing zero-liquid discharge (ZLD) technology to achieve wastewater recycling is an ideal approach. MVR evaporation crystallization technology, as a treatment technology, plays a crucial role in this field. Today's advanced evaporation crystallization technology can not only completely separate salt from wastewater but also separate different types of salts, enabling resource utilization and maximizing the mitigation of ecological problems caused by water scarcity and environmental pollution.
Founded in 2003, Hezhong is a world-class supplier of zero-liquid discharge and resource recovery solutions and membrane-based water treatment equipment. We provide users with unique, high-salt wastewater zero-liquid discharge process package design and full-process engineering implementation services; we are the only company globally that researches, develops, produces, and sells a full series of SDI water quality analysis and testing instruments; as the first company in China to launch high-flow filtration products, we maintain a leading position in the market and technology; and we have continuously been awarded the title of a first-class agent of DuPont, providing customers with ultrafiltration, reverse osmosis, resin, and other water treatment products and professional technical services.
The company attaches great importance to product and technological research and development, adhering to the path of innovation and focusing on the qualitative change of technology patents, standardization, and branding. Currently, we have obtained 156 patents. As a national high-tech enterprise and a specialized, refined, and innovative "small giant" enterprise in Beijing, our technology and products have been repeatedly selected for the "National Advanced Pollution Control Demonstration Technology Catalog," "Beijing New Technology and New Products," "Beijing Energy-Saving Technology Product Recommendation Catalog," and "Zhongguancun First (Set) Major Technological Equipment Experiment and Demonstration Project." Our independently owned intellectual property technology and products widely serve large state-owned enterprises, central enterprises, and other heavy industries, with over 2,000 accumulated customers across more than 50 countries.
Upholding the values of "professionalism, innovation, efficiency, and integrity," and with the aim of providing customers with "affordable, usable, mainstream technology, and mature processes," the company was the first to achieve a million-unit desulfurization wastewater resource recovery and zero-liquid discharge project in the power industry and provided the Asian largest coal chemical wastewater zero-liquid discharge project with internationally advanced evaporation crystallization and freeze crystallization process package design and equipment supply.
The company is actively committed to the practice of ecological civilization and the concept of "lucid waters and lush mountains are invaluable assets." We provide professional water treatment equipment and more reliable, mature, economical, and leading zero-liquid discharge project solutions for the power, coal chemical, mining, petrochemical, metallurgical, new energy, and new materials industries, contributing to the country's clear waters and blue skies and striving for a better Earth!
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