Preliminary Study on Purification of Aquaculture Wastewater by Microbial Nano-Silica Ball

Abstract:

To form microbial nanoball, EM active calcium was immobilized on nano-silica carrier consisting of pond sediment, zeolite powder and nanosilica. Through real-time monitoring of pH, dissolved oxygen (DO), chemical oxygen demand (COD) and ammonia nitrogen (NH₄⁺-N) aquaculture wastewater, the purification effects of Microbial nanoSilica Ball on aquaculture wastewater under different mud-water ratio condition were studied. The results showed that the purification effect reached best in 3-6 days for all treatments and was better for mud-water ratio of 1:2.7. In this mud-water ratio, it was indicated that pH was maintained at 7-8.5 which was an optimum value for the aquaculture, the content of DO was increased by 82.16% compared with the initial value and the removal rate of COD and NH₄⁺-N was 57.80% and 54.60% respectively.

• Periodical: Advanced Materials Research (Volumes 955-959)
• Pages: 2187-2191
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.955-959.2187
• Online since: June 2014
• Authors: Long Wang, Xiao Hou Shao, Jian Qiang Mao, Xin Yu Mao, Chao Yin, Zhong Lin Tang, Teng Wang
• Keywords: Aquaculture Wastewater, Immobilisation, Microbial Nano-Silica Ball, Mud-Water Ratio

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