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:: Volume 9, Issue 4 ( Autumn 2022) ::
Environ. Health Eng. Manag. 2022, 9(4): 391-397 Back to browse issues page
Treatment of tofu liquid waste using anaerobic-aerobic biofilm aeration system to reduce pollution
Zunidra Zunidra * , Sondang Sondang , Supriatna Supriatna
Corresponding author: Department of Environmental Health, Health Polytechnic of Jambi, Indonesia , zzunidra04@gmail.com
Abstract:   (328 Views)
Background: Tofu derived from processed soybeans is popular among the public, but its production has an unfavourable effect. After all, it produces liquid waste that causes quite high pollution because it contains quite high organic components. The present study aimed to reduce the content of biochemical oxygen demand (BOD), chemical oxygen demand (COD), and ammonia (NH3) in the liquid waste of a tofu factory. The scope of this research is limited to reducing the content of BOD, COD, and NH3 using an anaerobic-aerobic biofilm aeration system.
Methods: This is an experimental study with a pre-post test only design and one group post-test design. The study population in this study is the tofu industry, and the sample in this study is partly water from the tofu waste. Sample examination was carried out at the Regional Health Laboratory of Jambi province, Indonesia.
Results: The results showed a decrease in BOD, COD, and NH3 after passing through a tofu waste treatment machine using anaerobic and aerobic biofilms with BOD, COD, and ammonia values of 64.6%, 49.6%, and 79.8%, respectively. Tofu waste treatment using anaerobic and aerobic biofilms can lower the temperature and increase the pH of the waste.
Conclusion: On the surface of the bioball used, the growth of the biofilm was found, and to increase the ability of the equipment, an initial treatment, such as filtration and sedimentation of waste, and reducing acidity with the help of quicklime was needed.
Keywords: Biofilm, Soy foods, Biological oxygen demand, Chemical oxygen demand, Ammonia
Full-Text [PDF 956 kb]   (238 Downloads)    
Type of Study: Original Article | Subject: General
Received: 2022/11/9 | Accepted: 2022/10/18 | Published: 2022/12/22
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Zunidra Z, Sondang S, Supriatna S. Treatment of tofu liquid waste using anaerobic-aerobic biofilm aeration system to reduce pollution. Environ. Health Eng. Manag. 2022; 9 (4) :391-397
URL: http://ehemj.com/article-1-1027-en.html


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Volume 9, Issue 4 ( Autumn 2022) Back to browse issues page
Environmental Health Engineering And Management Journal Environmental Health Engineering And Management Journal
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