关键词: 在线过滤, 反冲洗, 水质生态监测, 营养盐, 浊度

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