Buitrón Germán, Chavez-Vega F Roberto, Moreno Gloria
Laboratory for Research on Advanced Processes for Water Treatment, Academic Unit Juriquilla, Instituto de Ingeniería, Universidad Nacional Autónoma de México, Blvd. Juriquilla 3001, Querétaro 76230, México E-mail:
Laboratory for Research on Advanced Processes for Water Treatment, Academic Unit Juriquilla, Instituto de Ingeniería, Universidad Nacional Autónoma de México, Blvd. Juriquilla 3001, Querétaro 76230, México.
Water Sci Technol. 2025 Jul;92(1):66-78. doi: 10.2166/wst.2025.089. Epub 2025 Jun 30.
Wineries must comply with wastewater discharge standards, and anaerobic digestion can help meet the regulatory requirements. One or two-stage processes have been proposed for winery effluent treatment, and analyzing which method is more suitable for COD removal. This study evaluates one and two-stage anaerobic processes focused on COD removal, varying the organic loading rate in continuous reactors using two types of winery effluents with different initial concentrations. A low-concentration wastewater (8.7 g COD/L) was assessed under one and two-stage processes, whereas a high-concentration effluent (23 g COD/L) was studied using two stages. Results showed that both configurations present excellent organic matter removal, as high as 88% in the case of high-concentration wastewater and from 93 to 97% removal for low-concentration wastewater. Methane productivities varied from 362 to 718 NmL CH/L·day, methane yield from 291 to 312 NmL CH/g COD, and the concentration of total suspended solids in the effluent from 80 to 610 mg/L. A one-stage process is recommended when the initial concentration of the effluent is relatively low; however, when treating effluents with elevated initial concentration, a two-stage system is more convenient because it avoids stability problems.
酿酒厂必须遵守废水排放标准，而厌氧消化有助于满足监管要求。已提出采用单级或两级工艺处理酿酒厂废水，并分析哪种方法更适合去除化学需氧量（COD）。本研究评估了以COD去除为重点的单级和两级厌氧工艺，在连续反应器中使用两种初始浓度不同的酿酒厂废水，改变有机负荷率。在单级和两级工艺下评估了低浓度废水（8.7 g COD/L），而使用两级工艺研究了高浓度废水（23 g COD/L）。结果表明，两种配置都具有出色的有机物去除效果，高浓度废水的去除率高达88%，低浓度废水的去除率为93%至97%。甲烷生产率在362至718 NmL CH/L·天之间，甲烷产量在291至312 NmL CH/g COD之间，出水总悬浮固体浓度在80至610 mg/L之间。当废水初始浓度相对较低时，建议采用单级工艺；然而，在处理初始浓度较高的废水时，两级系统更方便，因为它避免了稳定性问题。
