Improving the ecological safety of potato chips production by devising a method for wastewater treatment and recycling
Creators
- 1. National Technical University «Kharkiv Polytechnic Institute»
- 2. State Agrarian and Engineering University in Podilia
- 3. Institute of the Economy and Forecasting of the National Academy of Sciences of Ukraine
- 4. Lviv Polytechnic National University
Description
The study deals with determining the effectiveness of mechanical and physical and chemical methods for the treatment of wastewater of potato chips enterprises. It was established that the wastewater that is formed at different stages of production differ in composition. Wastewater after washing and peeling potatoes is contaminated mainly with suspended soil substances of about 500 mg/l, which are not settled, and also has soluble organic substances with a value of COD of about 1,000 mg/l.
It was found that the use of coagulation-flocculation treatment makes it possible to get clear water suitable for reuse for washing potatoes. Coagulant – aluminum sulfate in the amount of 250 mg/l turned out to be effective to destroy the stability of the dispersed system. To intensify the sedimentation of coagulated flakes of suspended particles, non-ionogenic flocculant, which is recommended to be dosed after the introduction of coagulant in the amount of 2.5 ml/l, was selected. Analysis of clarified water indicates a decrease in the concentration of suspended particles up to 26 mg/l and a decrease in COD and BOD5 to values of 262 mg/l and 176 mg/l, respectively.
The completed studies made it possible to propose a circuit of treatment of wastewater after washing potatoes, which consists of pre-filtering, reagent treatment, water clarification, and sediment dehydration. This circuit makes it possible to intensively clean the water to the standards of its discharge into the sewage network. However, additional disinfection of water with oxidizers, for example, ozone, was proposed for the reuse of clarified water to wash vegetables at an enterprise itself.
The use of the proposed circuit of intensive water treatment will allow increasing the environmental safety of the production of potato chips by preventing environmental contamination through reducing the volume of tap water consumption
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Improving the ecological safety of potato chips production by devising a method for wastewater treatment and recycling.pdf
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Additional details
References
- Malovanyi, M. S., Diachok, V. V., Sakhnevych, Ya. M. (2008). Analiz perspektyv ochyshchennia stokiv kharchovykh vyrobnytstv. Ekolohiya dovkillia ta bezpeka zhyttiediyalnosti, 5, 72–75. Available at: http://dspace.nbuv.gov.ua/bitstream/handle/123456789/5613/12-Malyovany.pdf?sequence=1
- Shestopalov, O., Hetta, O., Rykusova, N. (2019). Modern methods of wastewater treatment of the food industry. Ecological Sciences, 2, 20–27. doi: https://doi.org/10.32846/2306-9716-2019-2-25-4
- Shonina, N. A. (2015). Vodopol'zovanie i ochistka stochnyh vod predpriyatiy po pererabotke ovoschey i fruktov. Opyt Germanii. Santekhnika, 3, 34–39. Available at: https://www.abok.ru/for_spec/articles/30/6144/6144.pdf
- Pro zatverdzhennia Derzhavnykh sanitarnykh norm ta pravyl "Hihienichni vymohy do vody pytnoi, pryznachenoi dlia spozhyvannia liudynoiu" (DSanPiN 2.2.4-171-10). Available at: https://zakon.rada.gov.ua/laws/show/z0452-10#Text
- Council Directive 98/83/EC of 3 November 1998 on the quality of water intended for human consumption. Available at: https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=celex%3A31998L0083
- National Primary Drinking Water Regulations. Available at: https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations
- Ahmad, A. L., Ismail, S., Bhatia, S. (2005). Optimization of Coagulation−Flocculation Process for Palm Oil Mill Effluent Using Response Surface Methodology. Environmental Science & Technology, 39 (8), 2828–2834. doi: https://doi.org/10.1021/es0498080
- Teh, C. Y., Budiman, P. M., Shak, K. P. Y., Wu, T. Y. (2016). Recent Advancement of Coagulation–Flocculation and Its Application in Wastewater Treatment. Industrial & Engineering Chemistry Research, 55 (16), 4363–4389. doi: https://doi.org/10.1021/acs.iecr.5b04703
- Al Asheh, S., Aidan, A. (2017). Operating Conditions of Coagulation-Flocculation Process for High Turbidity Ceramic Wastewater. Journal of Water And Environmental Nanotechnology, 2 (2), 80–87. Available at: https://www.sid.ir/en/Journal/ViewPaper.aspx?ID=575587
- Hu, C., Liu, H., Qu, J., Wang, D., Ru, J. (2006). Coagulation behavior of aluminum salts in eutrophic water: significance of Al13 species and pH control. Environmental Science & Technology, 40 (1), 325–331. doi: https://doi.org/10.1021/es051423+
- Miller, S. M., Fugate, E. J., Craver, V. O., Smith, J. A., Zimmerman, J. B. (2008). Toward Understanding the Efficacy and Mechanism of Opuntiaspp. as a Natural Coagulant for Potential Application in Water Treatment. Environmental Science & Technology, 42 (12), 4274–4279. doi: https://doi.org/10.1021/es7025054
- Gurses, A., Yalcin, M., Dogar, C. (2003). Removal of Remazol Red RB by using Al (III) as coagulant-flocculant: effect of some variables on settling velocity. Water, Air, and Soil Pollution, 146, 297–318. doi: https://doi.org/10.1023/A:1023994822359
- Saritha, V., Srinivas, N., Srikanth Vuppala, N. V. (2015). Analysis and optimization of coagulation and flocculation process. Applied Water Science, 7 (1), 451–460. doi: https://doi.org/10.1007/s13201-014-0262-y
- Shkop, A., Tseitlin, M., Shestopalov, O. (2016). Exploring the ways to intensify the dewatering process of polydisperse suspensions. Eastern-European Journal of Enterprise Technologies, 6 (10 (84)), 35–40. doi: https://doi.org/10.15587/1729-4061.2016.86085
- Shkop, A., Tseitlin, M., Shestopalov, O., Raiko, V. (2017). A study of the flocculs strength of polydisperse coal suspensions to mechanical influences. EUREKA: Physics and Engineering, 1, 13–20. doi: https://doi.org/10.21303/2461-4262.2017.00268