Recent Used Techniques and Promised Solutions for Biofiltration Treatment of Fish Wastewater

Document Type : Review Articles

Authors

1 Agricultural Engineering , Faculty of Agriculture , Cairo University

2 Microbiology Department, Faculty of Agriculture, Cairo University

3 Agricultural Engineering Department, Faculty of Agriculture, Cairo University, Giza, Egypt

Abstract

Overpopulation and lack of resources have become serious problems in recent years. Therefore, there is an urgent need to find renewable sources of food to confront this problem. Aquaculture is an inexpensive and important source of protein, as aquaculture have increased significantly, especially during the past two decades. The wastewater produced from those farms includes many harmful elements such as ammonia (NH3), organic matter (OM), phosphorous(P) and dissolved organic carbon (DOC). So, it has become necessary to find an appropriate method to treat the wastewater produced from those farms. There are many ways to treat wastewater from fish farms, including physical, chemical or biological methods. Biological treatment is one of the best methods used in wastewater treatment from aquaculture, as it is environmentally friendly and less expensive than other methods. The biofiltration process depends on the use of microorganisms that convert ammonium (NH4+) to nitrite (NO2-) and then to nitrate (NO3-), and this is done using a Recirculating Aquaculture Systems (RASs). The main component of the biofilter is the filter media, which can be compost, wood chips, beads, other organic or inorganic materials. There are many types of microorganisms used to treat wastewater like Microalgae, bacteria, fungi, yeast. The choice of the type of microorganism used depends on the chemical nature of the pollutants.

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History

  • Receive Date: 17 January 2022
  • Revise Date: 04 March 2022
  • Accept Date: 09 March 2022

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