首页> 外文期刊>Bioresource Technology: Biomass, Bioenergy, Biowastes, Conversion Technologies, Biotransformations, Production Technologies >Evaluation of sludge reduction and carbon source recovery from excess sludge by the advanced Sludge reduction, Inorganic solids separation, Phosphorus recovery, and Enhanced nutrient Removal (SIPER) wastewater treatment process
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Evaluation of sludge reduction and carbon source recovery from excess sludge by the advanced Sludge reduction, Inorganic solids separation, Phosphorus recovery, and Enhanced nutrient Removal (SIPER) wastewater treatment process

机译:通过高级污泥减少,无机固体分离,磷回收和增强的营养物去除(SIPER)废水处理工艺评估污泥减少和过量污泥中的碳源回收

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摘要

An advanced wastewater treatment process involving Sludge reduction, Inorganic solids separation, Phosphorus recovery, and Enhanced nutrient Removal (SIPER) was developed to reduce sludge production, prevent the accumulation of inorganic solids, recover phosphorus, and enhance nutrient removal. The feasibility of recovering carbon (C)-source from excess sludge to enhance nutrient removal and the sludge reduction potential of the process was evaluated. The results showed that sludge hydrolysis and acidification yields were 20 ± 3% and 34 ± 2%, respectively. The COD/TN and VFA/TP ratios for the supernatant of alkaline-treated sludge were 2.8 and 2.5 times those in the influent, respectively. Nutrients were removed effectively in the system, especially TN, for which the removal efficiency reached 80 ± 2%. The C-source recovered from the excess sludge was successfully employed as an internal Csource for enhanced nutrient removal. The observed sludge yield of the system was 0.096 g VSS g COD~1, demonstrating the excellent sludge reduction potential of this process.
机译:开发了一种先进的废水处理工艺,包括减少污泥,无机固体分离,磷回收和增强的养分去除(SIPER),以减少污泥的产生,防止无机固体的积累,回收磷并提高养分去除率。评估了从过量污泥中回收碳(C)源以增强营养去除率和该工艺减少污泥潜力的可行性。结果表明,污泥的水解率和酸化率分别为20±3%和34±2%。碱处理污泥上清液的COD / TN和VFA / TP比分别为进水的2.8倍和2.5倍。系统中的营养物质被有效去除,尤其是TN,去除效率达到80±2%。从过量污泥中回收的碳源已成功地用作内部碳源,以提高营养去除率。该系统观察到的污泥产率为0.096 g VSS g COD〜1,表明该工艺具有出色的污泥还原潜力。

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