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首页> 外文期刊>Journal of water chemistry and technology >Disintegration as a Key-Step in Pre-Treatment of Surplus Activated Sludge
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Disintegration as a Key-Step in Pre-Treatment of Surplus Activated Sludge

机译：分解是剩余活性污泥预处理中的关键步骤

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This study has been carried out to investigate the effect of microwave, alkalization and freezing on surplus activated sludge disintegration (release of organic/inorganic substances into the supernatant) and mesophilic fermentation. After applying pre-treatments, chemical oxygen demand increased by 7-35 times, disintegration degree was 35-47%, proteins by 5-25, carbohydrates by 2-3, phosphates 7-22 and ammonium by 3-16 times. Disintegration by microwave, alkalization and freezing has a positive effect on the rate of sludge anaerobic digestion. Biogas production increased by: 62; 49 and 58%, for microwave radiation, alkalization and freezing, respectively. The conducted research shows that the application of disintegration as a pre-treatment of surplus activated sludge is an effective method, allowing for practical using sewage sludge.
机译：进行了这项研究以研究微波，碱化和冷冻对剩余活性污泥分解（有机/无机物质释放到上清液中）和中温发酵的影响。经过预处理后，化学需氧量增加了7-35倍，崩解度增加了35-47％，蛋白质增加了5-25，碳水化合物增加了2-3，磷酸盐7-22和铵增加了3-16倍。微波分解，碱化和冷冻对污泥厌氧消化速率有积极影响。沼气产量增加：62;分别为49％和58％，分别用于微波辐射，碱化和冷冻。进行的研究表明，将崩解作为剩余活性污泥的预处理是一种有效的方法，可以实际使用污水污泥。

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