Newsroom

Newsroom

Headline

  • New System Improves Coking Wastewater Treatment Efficiency

    Chinese researchers have developed a system for the treatment of coking wastewater from large-scale industries with lower costs and higher efficiency.

    Heating coal over high temperatures provides both heat and carbon (coke) required for iron production. During the process, recycled scrubber water, which is used as a coolant, contains large amounts of suspended solids and chemicals that are toxic to the environment and biological systems.

    In China, more than 100 million tonnes of such wastewater is produced from the coking industries. On April 16, 2015, China issued its Action Plan for the Prevention and Control of Water Pollution to ensure water safety.

    However, the conventional end-of-pipe treatment, which processes waste before discharging, ends up in higher costs and low efficiency, hindering the sustainable development of the industries.

    Based on the idea of whole-process pollution control, researchers from the Institute of Process Engineering (IPE), Chinese Academy of Sciences, lowered the cost of coking wastewater treatment by 20 percent in their new system, and achieved stable and efficient removal of toxic organics.

    So far, the system has been used in 41 water pollution control projects in large Chinese enterprises like Ansteel, Wuhan Iron and Steel Corporation and China Coal Energy.

    According to the IPE researchers, the installed systems now can treat more than 55.2 million tonnes of coking wastewater every year.

    Over the past three years, the systems have treated 152 million tonnes of coking wastewater, recycling 750,000 tonnes of tar and reducing emissions of 240,000 tonnes of chemical oxygen demand as well as 90,000 tonnes of ammonia nitrogen.

    The researchers said the system enables the coking industries to meet the national standards for industrial wastewater discharges, achieving efficient pollution control with low-cost operation. (Xinhua)

    Media Contact: 
    LI Xiangyu
    Public Information Officer
     
    Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China.  
    E-mail: xiangyuli@ipe.ac.cn
    Tel: 86-10-82544826
     
     

    附件下载

    Recommended Articles
    Particulate Alum Pickering Emulsion as Adjuvant May Enhance Performance of SARS-CoV-2 Vaccine
    Particulate Alum Pickering Emulsion as Adjuvant May Enhance Performance of SARS-CoV-2 Vaccine
    Sep 04,2020
    Researchers developed a novel strategy for adjuvant based on particulate Alum Pickering emulsion, which enhances the performance of SARS-CoV-2 vaccine.
    Researchers Develop High-performance Cancer Vaccine Using Novel Microcapsules
    May 23,2020
    Scientists from IPE have developed a new therapeutic tumor vaccine based on self-healing polylactic acid microcapsules, which can efficiently activate the immune system and inhibit tumor development.

    CONTACT US

    • CONTACT US 86-10-82544817
    • CONTACT US 62551257
    • CONTACT US ghb@ipe.ac.cn
    • CONTACT US Institute of Process Engineering,Chinese Academy of Sciences,1 North 2nd Street, Zhongguancun, Haidian District, Beijing 100190, PR China