SHANDONG SCIENCE ›› 2017, Vol. 30 ›› Issue (5): 8-13.doi: 10.3976/j.issn.1002-4026.2017.05.002

• Oceanographic Science, Technology and Equipment • Previous Articles     Next Articles

Design of online automatic filtration system for the in-situ nutrient salt sensor

CHU Dong-zhi，ZHANG Shu-wei， ZHANG Tian-peng，WANG Xiao-hong， CAO Xuan，MA Ran   

  1. Shandong Provincial Key Laboratory of Marine Environmental Monitoring Technology, Institute of Oceanographic Instrumentation, Shandong Academy of Sciences, Qingdao 266001, China
  • Received:2017-03-20 Online:2017-10-20 Published:2017-10-20

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Abstract:

The analysis sensor for small flow nutrient salt has the problem of fouling and clogging of filter parts during operation. To solve this problem, a counterflushing type of online filtering system for nutrient salt was designed. The microporous ceramic filter core was used as the filter element, and an online filtration system with secondary injection, secondary filtration, and periodic recoil was proposed, which was based on the existing filtering methods. In addition, working principle and process were described in this article, and the filtering parameters were determined. The experiment results showed that effluent turbidity of the filtering system was stable, basically between 0.2 ~ 0.3 NTU, the system was effective below 150 NTU.After filtration, the recovery rates of 5 nutrients were basically between 90% and 110%, which indicated that this online filtration system could be used for insitu nutrient salt sensor.

Key words: water quality ecological monitoring, recoil, nutrient salt, on-line filter, turbidity

CLC Number: 

  • P716+.15
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