Volume 7 Issue 4
Oct.  2014
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Article Navigation >  Water Science and Engineering  > 2014  >  7(4): 395-402
Jun PANG, Xue-ling FENG, Xiu-feng WANG. 2014: Purification and utilization of garlic processing wastewater in lotus pond wetlands. Water Science and Engineering, 7(4): 395-402. doi: 10.3882/j.issn.1674-2370.2014.04.005
Citation: Jun PANG, Xue-ling FENG, Xiu-feng WANG. 2014: Purification and utilization of garlic processing wastewater in lotus pond wetlands. Water Science and Engineering, 7(4): 395-402. doi: 10.3882/j.issn.1674-2370.2014.04.005
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Purification and utilization of garlic processing wastewater in lotus pond wetlands

doi: 10.3882/j.issn.1674-2370.2014.04.005
  • 1.

    College of Arts, Taishan University, Taian 271021, P. R. China

  • 2.

    Linyi Research Institute of Environmental Protection, Linyi 276000, P. R. China

  • 3.

    College of Horticultural Science and Engineering, Shandong Agricultural University, Taian 271018, P. R. China

Funds:  This work was supported by the Key Project of Environmental Science and Technology of Shandong Province (Grant No. 2006003-2).
 
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  • Corresponding author: Xiu-feng WANG
  • Received Date: 2013-06-26
  • Rev Recd Date: 2013-11-28
    Abstract
  • Based on the experiments of utilization of garlic processing wastewater in a lotus pond, this study demonstrates that lotus pond wetlands have a remarkable ability to remove organic pollutants and decrease chemical oxygen demand (CODCr), biochemical oxygen demand (BOD5), and suspended substances (SS) in garlic processing wastewater. Results also show evident effects of lotus roots on absorption of NH3-N. The pH value in a lotus pond with wastewater discharged was relatively stable. The water quality in the lotus pond reached the class Ⅱ emission standard,  according to the Integrated Wastewater Discharge Standard (GB8978-1996), seven days after pretreated garlic processing wastewater had been discharged into the lotus pond. Garlic processing wastewater irrigation does not produce pollution in the pond sediment and has no negative effect on the growth of lotus roots. Due to utilization of garlic processing wastewater, the output of lotus roots increased by 3.0% to 8.3%, and the quality of lotus roots was improved. Therefore, better purification and utilization results can be achieved.

     

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