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Hasky(哈斯基)重金属污染土壤(严重污染)修复的小型试验

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Hasky(哈斯基)重金属污染土壤(严重污染)修复的小型试验

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Hasky(哈斯基)重金属污染土壤(严重污染)修复的小型试验

  1. 1. Registration No. 5839536 Abstract In November 2016, Dunton Environmental was invited by Hasky Environmental Protection to carry out a bench scale trial on heavy metal contaminated soil (Severely Contaminated). Dunton Environmental created a mix design product using Regener 8-19 solution as the primary catalyst, coupled with other reagents. This mix design product was developed to reduce the concentration of heavy metal contaminants within the soil. The trial treatment was conducted at the Tianjin trial site. All the samples were tested by the ALS Group. This trial successfully proved the capability of the Regener8-19 solution to treat heavy metal contaminated soil, and therefore, significantly reduce the risk of harm to human health and the environment from this material. Regener 8-19 Technical Background Regener 8-19 is applied to soils that are polluted with various heavy metal contaminants. The product acts to alter the chemical environment within the solid matrix, allowing the reduction of the heavy metals from the solid. Regener 8-19 is applied in a liquid or powder medium to the solid waste by a variety of mechanisms depending on the nature and composition of the soil or solid waste. On site, Regener 8-19 is mixed and distributed homogenously through the soil or solid waste via Dunton Environmental’s Soterion batching plant; Dunton Environmental’s Stabilisation Unit or Dunton Environmental’s Allu mixing process. Regener 8-19 comprises specific metal-binding polymers that interact with the contaminants designated for reduction. The chemical process involves the exchange of ions between the Regener 8-19 solution and the metals present with the solid matrix, leading to the binding and immobilisation of the heavy metal contaminants. Technical Case Study Registered Office: Unit 1, Tamebridge Industrial Estate, Aldridge Road, Perry Barr, Birmingham, B42 2TX www.duntonenvironmental.co.uk • info@duntonenvironmental.co.uk Bench Scale Trial of Remediation of heavy metal contaminated soils (Severely Contaminated) from Hasky Environmental Protection Science & Technology Development Co., Ltd
  2. 2. Registration No. 5839536 Registered Office: Unit 1, Tamebridge Industrial Estate, Aldridge Road, Perry Barr, Birmingham, B42 2TX www.duntonenvironmental.co.uk • info@duntonenvironmental.co.uk Technical Case Study Project Background Hasky Environmental Protection Science & Technology Development Co., Ltd is an integrated service provider of environmental protection. Hasky has been offering integrated solutions for a wide array of industry requirements including, water and river monitoring, engineering consulting, project management, core equipment manufacturing, investment and operation, urban water management, ecological restoration, and VOC control. Dunton (Beijing) visited Hasky for a technical meeting on Dunton’s heavy metal remediation technology in November 2016. After the meeting, Hasky showed an interest in Dunton’s technology, and commissioned Dunton to carry out a bench scale trial treatment. Due to commercial protection reasons, Hasky cannot provide Dunton any information related to the sampled soil. After receiving the sample from Hasky, Dunton commissioned ALS chemical laboratory to determine the initial heavy metal concentration of the sample. Solution Regener 8-19 was used to reduce the heavy metal content within the soil. The treatment occurred after baseline sample was obtained on the 2016/12/6. The soil was sampled after the first treatment on the 2017/3/15. After the second treatment (2017/4/24), the soil was sampled on the 2017/4/24, 2017/5/12, and 2017/9/22.
  3. 3. Registration No. 5839536 Registered Office: Unit 1, Tamebridge Industrial Estate, Aldridge Road, Perry Barr, Birmingham, B42 2TX www.duntonenvironmental.co.uk • info@duntonenvironmental.co.uk Technical Case Study Results The results were recorded for each of the 3 contaminants (Al, Fe and Pb), all of which showed a significant reduction. The degradation results and graphs are presented below. 35400 12800 65000 7890 0 10000 20000 30000 40000 50000 60000 70000 2017/3/1 2017/4/1 2017/5/1 2017/6/1 2017/7/1 2017/8/1 2017/9/1 Concentration(mg/kg) Sampling Date Reduction of Aluminum 30600 35800 25900 21900 0 5000 10000 15000 20000 25000 30000 35000 40000 2017/3/1 2017/4/1 2017/5/1 2017/6/1 2017/7/1 2017/8/1 2017/9/1 Concentration(mg/kg) Sampling Date Reduction of Iron Figure 1 - Al concentration against time. Figure 2 - Fe concentration against time.
  4. 4. Registration No. 5839536 Registered Office: Unit 1, Tamebridge Industrial Estate, Aldridge Road, Perry Barr, Birmingham, B42 2TX www.duntonenvironmental.co.uk • info@duntonenvironmental.co.uk Technical Case Study Conclusion Aluminum and Iron concentrations with the soil sample were reduced by 77.70% and 28.40%, respectively. Although the starting concentration of Lead is far lower than the contaminated soil national standard, the treatment reduced the lead concentration by 18.40%. As a result of this trial, the Regener 8-19 product has proven its capability to significantly reduce heavy metal contaminants within the soil samples provided by Hasky. Since the trial testing was carried out on a small scale, it would be beneficial to have a further cooperation with Hasky to undertake a large-scale, on-site pilot project, to further prove the effectiveness of the Regener 8-19 product and to demonstrate the ease of usage of the product under normal working conditions. 21.2 76.4 17400 15.7 17.3 0 2000 4000 6000 8000 10000 12000 14000 16000 18000 20000 Concentration(mg/kg) Sampling Date Reduction of Lead Figure 3 - Pb concentration against time.

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