化工进展 ›› 2016, Vol. 35 ›› Issue (07): 2274-2278.DOI: 10.16085/j.issn.1000-6613.2016.07.047

• 应用技术 • 上一篇    下一篇

光生物反应器加热系统的设计与应用

倪红军1, 冯汛1, 佘徳琴2, 李亚2, 张雯婕3, 胡雨婷4, 石健4   

  1. 1. 南通大学机械工程学院, 江苏 南通 226019;
    2. 南通科技职业学院, 江苏 南通 226019;
    3. 南通大学生命工程学院, 江苏 南通 226019;
    4. 南通大学化学化工学院, 江苏 南通 226019
  • 收稿日期:2015-12-11 修回日期:2016-03-09 出版日期:2016-07-05 发布日期:2016-07-05
  • 通讯作者: 石健,教授,硕士生导师,主要研究方向为环境工程/水污染控制。E-mail:601080590@qq.com。
  • 作者简介:倪红军(1965-),男,教授,硕士生导师,主要研究方向为新能源和新材料方向。E-mail:916008953@qq.com。
  • 基金资助:
    国家自然基金(21177067)、江苏高校优势学科建设工程、江苏高校科研成果产业化推进工程项目(JHB2012-45)、江苏省青蓝工程计划及南通市应用研究计划(BK2014053)项目。

Design and application of photobioreactor heating system

NI Hongjun1, FENG Xun1, SHE Deqin2, LI Ya2, ZHANG Wenjie3, HU Yuting4, SHI Jian4   

  1. 1. School of Mechanical Engineering, Nantong University, Nantong 226019, Jiangsu, China;
    2. Nantong College of Science and Technology, Nantong 226019, Jiangsu, China;
    3. School of Life Sciences, Nantong University, Nantong 226019, Jiangsu, China;
    4. School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, Jiangsu, China
  • Received:2015-12-11 Revised:2016-03-09 Online:2016-07-05 Published:2016-07-05

摘要: 针对微藻在生长过程中对温度要求较高,需要保持在适宜的温度范围内,设计了以Siemens S7-200 PLC组成微藻光生物反应器的控制系统。该光生物反应器加热系统利用温度传感器采集藻液中温度信号,将信号输入到PLC中。PLC对温度信号进行运算,输出信号控制加热棒工作,实现了藻液冬季温度的自动恒温控制。经过试验表明,该加热系统在藻液温度设定值为30℃时,温度超调不超过1.5℃,超调量小于7.5%,静差小于±0.5℃,具有控制精度高、稳定性好的优点。光生物反应器采用该加热系统后,藻液的光密度由0.29增长到1.28,污水中的COD的去除率达到79.3%,TN的去除率达到65.07%,TP的去除率达到83.03%,因此该光生物反应器加热系统可以用于微藻的培养,并且微藻在光生物反应器内对污水的处理效果较好,具有良好的应用前景。

关键词: 可编程逻辑控制器, 微藻, 温度, 污水

Abstract: During growth process, microalgae is more demanding for temperature, and need to keep it in suitable ranges. The photobioreactor heating system based on Siemens S7-200 PLC was designed. The control system collects the temperature signal by temperature sensor, than put the signal into the PLC. PLC operates the signal, and output signal to control the operation of heating rods, achieved the microalgae automatic temperature control in winter. Results showed that the temperature overshoot does not exceed 1.5℃, the overshoot less than 7.5%, the static error less than ±0.5℃, when the temperature setting is 30℃. So the photobioreactor heating system has high control precision, good reliability. After application of the heating system, optical density of the microalgae increased from 0.29 to 1.28, COD removal rate reached 79.3%, TN removal rate reached 65.07%, TP removal rate reached 83.03%. Therefore, photobioreactor heating system can be used to cultivate the microalgae, and the microalgae can treat the waste water efficiently, so it has good application prospects.

Key words: programmable logic controller(PLC), microalgae, temperature, waste water

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