Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2022, Vol. 38 ›› Issue (33): 145-151.doi: 10.11924/j.issn.1000-6850.casb2022-0687

Special Issue: 生物技术

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Ammonia-oxidizing Microorganisms and Their Application in Water Quality Control of Pond Aquaculture in China

LU Shimin1,2(), LI Yayuan1,2,3, LIU Chong1,2, LIU Xingguo1,2, BAO Xuteng1,2, TIAN Changfeng1,2, GU Zhaojun1,2, ZHOU Liang1,2, WU Fan1,2()   

  1. 1Fishery Machinery and Instrument Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200092
    2Key Laboratory of Aquaculture Facilities Engineering, Ministry of Agriculture and Rural Affairs, Shanghai 200092
    3College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306
  • Received:2022-08-22 Revised:2022-09-30 Online:2022-11-25 Published:2022-11-22
  • Contact: WU Fan E-mail:lushimin@fmiri.ac.cn;wufan@fmiri.ac.cn

Abstract:

Ammonia is a pollutant that needs to be considered in the treatment of pond aquaculture discharge. The oxidation of ammonia in pond aquaculture mainly depends on ammonia-oxidizing bacteria, ammonia-oxidizing archaea and anaerobic ammonia-oxidizing bacteria. This study briefly introduces the nitrogen metabolic mechanism of several ammonia-oxidizing microorganisms found in nature, and explains the ecological regulation mechanism of these microorganisms in pond aquaculture water from perspectives of temperature, pH, dissolved oxygen, attached substrate and light, in combination with the characteristics of pond aquaculture ecosystem. Based on attached growth habits of ammonia-oxidizing microorganisms, kinds of pond aquaculture water purification technologies have been developed, which play a role in water purification to a certain extent. However, there are common problems such as large floor area required, high cost and low efficiency. At present, the application and research of ammonia-oxidizing probiotics and high-efficiency microbial reactors in pond aquaculture water treatment in China are still relatively underdeveloped. It is suggested to strengthen the screening and enrichment of low-temperature and high-efficiency ammonia oxidation strains in the future, and to promote research on compact microbial reactors for water treatment, as well as to enrich the means of ammonia removal from freshwater pond aquaculture water.

Key words: ammonia, ammonia-oxidizing bacteria, ammonia-oxidizing archaea, attached substrate, light

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