Innovative ammonia recovery and biogas enhancement via direct contact membrane distillation in thermophilic anaerobic digestion of mixed sludge

被引：0

作者：

Rivera, Fanny ^{[1
,3
]}

Villarreal, Luis ^{[1
]}

Pradanos, Pedro ^{[1
,3
]}

Hernandez, Antonio ^{[1
,3
]}

Palacio, Laura ^{[1
,3
]}

Munoz, Raul ^{[1
,2
]}

机构：

[1] Univ Valladolid, Inst Sustainable Proc, Dr Mergelina S-N, Valladolid 47011, Spain

[2] Univ Valladolid, Dept Chem Engn & Environm Technol, Valladolid 47011, Spain

[3] Univ Valladolid, Sci Fac, Dept Appl Phys, Valladolid 47011, Spain

来源：

JOURNAL OF WATER PROCESS ENGINEERING | 2025年 / 76卷

关键词：

Biogas production; Circular economy; Distillation; Flat sheet membrane module; TAN recovery; CHICKEN MANURE; RENEWABLE ENERGY; INHIBITION; DESALINATION; DEGRADATION; CHALLENGES; REMOVAL; WASTES; WATER;

D O I：

10.1016/j.jwpe.2025.108193

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The effect of membrane distillation (MD) on both NH3 recovery and anaerobic digestion during the treatment of urban wastewater mixed sludge was studied in a 3 L thermophilic continuous stirred tank reactor combined with a membrane-based module for extraction. A hydraulic retention time of 20 days was used to operate the thermophilic anaerobic digester at 55 degrees C, while the flat sheet PTFE membrane module was continuously operated at 0.25 L min- 1 of liquid recirculation rates. MD was able to progressively reduce the total ammoniacal nitrogen (TAN) concentration from 0.4 f 0.2 to 0.1 f 0.1 g TAN L- 1 after 40 operating days. The CH4 yield increased by 3-fold as a result of NH3 extraction. Similarly, chemical oxygen demand and volatile solids removal efficiencies increased by 1.8-fold and 1.4-fold, respectively. Interestingly, the reduction in TAN concentration led to a complete assimilation of acetic and propionic acid.

引用

页数：8

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