Pre-treatment and post-treatment strategies for enhancing anaerobic digestion in poultry slaughterhouse wastewater management

Sustainable Chemistry for the Environment Pub Date : 2024-12-31 DOI:10.1016/j.scenv.2024.100199

Madhu Sudan Reddy Atchala , Polisetty Venkateswara Rao , Sridhar Pilli , Ashish Pawar , Rajesh Ganiga , R.D. Tyagi

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Abstract

Over the years, anaerobic digestion (AD) has proven to be an effective method for breaking down organic materials, reducing sludge, and generating renewable energy. However, its application in treating poultry slaughterhouse wastewater (PSWW) faces challenges, particularly due to the high concentrations of fats, oils, grease (FOG) around 400 – 1110 mg/L, and ammonia around 25–90 mg/L (initial concentration), which can inhibit the AD process. Additionally, even after AD, residual nutrients in the treated wastewater can lead to environmental issues such as eutrophication and methemoglobinemia if discharged untreated. This review explores the effects of FOG and ammonia on AD, along with the influence of nutrient levels on water bodies. It evaluates potential pre-treatment methods to enhance degradation by challenges posed by FOG and ammonia. Additionally, the review discusses post-treatment options to mitigate nutrient-related issues. Finally, this study concludes with a discussion of future perspectives.

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加强家禽屠宰场废水厌氧消化的前、后处理策略

多年来，厌氧消化（AD）已被证明是分解有机物质、减少污泥和产生可再生能源的有效方法。然而，它在处理家禽屠宰场废水（PSWW）中的应用面临挑战，特别是由于高浓度的脂肪，油，油脂（FOG）约为400 - 1110 mg/L，氨约为25-90 mg/L（初始浓度），可以抑制AD过程。此外，即使在AD后，处理后的废水中残留的营养物质如果未经处理就排放，也会导致富营养化和高铁血红蛋白血症等环境问题。本文综述了FOG和氨对AD的影响，以及水体营养水平的影响。它评估了潜在的预处理方法，以加强对雾和氨的降解。此外，本文还讨论了缓解营养相关问题的治疗后选择。最后，本研究总结了未来的展望。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Sustainable Chemistry for the Environment

CiteScore

0.40

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0.00%

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