Biodegradable liquid film entering the demonstration farm for the control of "white pollution" to find a shortcut

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Qingdao Municipal Science and Technology Project, supported by special programs, has enabled Shandong University of Science and Technology to advance its research on "multi-functional biodegradable liquid film" into the demonstration phase. This innovative agricultural technology aims to address the long-standing issue of "white pollution" caused by traditional plastic mulch. In the coming year, Jiaonan City plans to establish a production base capable of manufacturing 10,000 tons of multi-functional biodegradable liquid film annually. Plastic mulching is widely used in modern agriculture for its effectiveness in soil moisture retention, weed suppression, and temperature regulation. However, conventional plastic films are difficult to decompose naturally, leading to environmental contamination. Over time, these materials break down into microplastics, harming soil structure and polluting ecosystems. As a result, the development of degradable alternatives has become a critical focus in sustainable agriculture. The multifunctional biodegradable liquid mulch is made from natural byproducts such as lignite, weathered coal, or peat-based black liquor from papermaking, as well as seaweed, winemaking, and starch waste liquors. Through crosslinking agents, the material combines lignin, cellulose, and polysaccharides to form polymer compounds. These are further enhanced with additives like silicon fertilizers, trace elements, and even controlled-release pesticides and herbicides, making it a versatile solution for various agricultural needs. This technology offers three major innovations: improved soil health, reduced chemical runoff, and enhanced crop yield. Field trials conducted in Jiaonan City, in collaboration with Shandong University of Science and Technology, have shown promising results in growing peanuts, corn, and sweet potatoes. The outcomes were highly encouraging, proving the practical value of this eco-friendly alternative. Currently, the project has been officially recognized by local science and technology departments and included in the national plan for resource-saving technology demonstration cities. Efforts are ongoing to expand the application of this technology across more farmlands, promoting sustainable agricultural practices nationwide. With continued support and real-world testing, this breakthrough could significantly reduce environmental impact while improving farming efficiency.

Plate Heat Exchanger Y Series

Plate Heat Exchangers (PHEs) are highly efficient devices used for heat transfer between two fluids. The U Series of plate heat exchangers is a specific design known for its compactness, flexibility, and high thermal efficiency. Below is a detailed classification and introduction to the U Series Plate Heat Exchangers:

1. Based on Design Features

  • Gasketed Plate Heat Exchangers:

    • Uses gaskets to seal plates and create flow channels.

    • Easy to disassemble for cleaning and maintenance.

    • Suitable for applications with moderate temperature and pressure.

  • Brazed Plate Heat Exchangers:

    • Plates are brazed together using copper or nickel.

    • Compact and leak-proof design.

    • Ideal for high-pressure and high-temperature applications.

  • Welded Plate Heat Exchangers:

    • Plates are welded together for a robust construction.

    • Suitable for corrosive or high-temperature fluids.

    • Commonly used in industrial applications.

      2. Based on Flow Configuration

      • Single-Pass U Series:

        • Fluids pass through the heat exchanger once.

        • Simple design with lower pressure drop.

      • Multi-Pass U Series:

        • Fluids pass through the heat exchanger multiple times.

        • Increases heat transfer efficiency but may result in higher pressure drop.

          3. Based on Application

          • HVAC U Series:

            • Used in heating, ventilation, and air conditioning systems.

            • Efficient for heat recovery, chillers, and heat pumps.

          • Industrial U Series:

            • Designed for industrial processes such as chemical, food, and pharmaceutical industries.

            • Handles high temperatures, pressures, and corrosive fluids.

          • Refrigeration U Series:

            • Used in refrigeration systems for evaporators or condensers.

            • Compact and efficient for low-temperature applications.

          • District Energy U Series:

            • Connects to district heating or cooling networks.

            • High-capacity and energy-efficient.

              4. Based on Plate Material

              • Stainless Steel Plates:

                • Corrosion-resistant and durable.

                • Suitable for most applications, including food and beverage industries.

              • Titanium Plates:

                • Highly resistant to corrosion, especially in seawater or chloride environments.

                • Used in marine or chemical industries.

              • Nickel Plates:

                • Resistant to high temperatures and corrosive fluids.

                • Ideal for chemical processing or oil and gas industries.

                  5. Based on Gasket Material

                  • Nitrile (NBR) Gaskets:

                    • Suitable for water, oils, and low-temperature applications.

                  • EPDM Gaskets:

                    • Resistant to high temperatures and steam.

                    • Commonly used in HVAC and heating applications.

                  • Viton (FKM) Gaskets:

                    • Resistant to aggressive chemicals and high temperatures.

                    • Used in chemical or industrial applications.

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Siping Juyuan Hanyang Plate Heat Exchanger Co., Ltd , https://www.tj-heatexchange.com