The comparison of greenhouse gas emissions in sewage treatment plants with different treatment processes

被引：68

作者：

Masuda, Shuhei ^{[1
]}

Sano, Itsumi ^{[2
]}

Hojo, Toshimasa ^{[2
]}

Li, Yu-You ^{[2
]}

Nishimura, Osamu ^{[2
]}

机构：

[1] Akita Coll, Natl Inst Technol, Dept Civil Engn & Architecture, Bunkyocho 1-1, Akita, Japan

[2] Tohoku Univ, Dept Civil & Environm Engn, Aoba Ku, Aoba 6-6-06, Sendai, Miyagi, Japan

来源：

CHEMOSPHERE | 2018年 / 193卷

关键词：

Sewage treatment; Greenhouse gas; Emission factor; Methane; Nitrous oxide; Dissolved gas; WASTE-WATER TREATMENT; NITROUS-OXIDE EMISSIONS; ANAEROBIC METHANE OXIDATION; AMMONIA-OXIDIZING BACTERIA; ACTIVATED-SLUDGE; SIMULTANEOUS NITRIFICATION; N2O PRODUCTION; NITRIC-OXIDE; DENITRIFICATION; REDUCTION;

D O I：

10.1016/j.chemosphere.2017.11.018

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Greenhouse gas emissions from different sewage treatment plants: oxidation ditch process, double circulated anoxic-oxic process and anoxic-oxic process were evaluated based on the survey. The methane and nitrous oxide characteristics were discussed based on the gaseous and dissolved gas profiles. As a result, it was found that methane was produced in the sewer pipes and the primary sedimentation tank. Additionally, a ventilation system would promote the gasification of dissolved methane in the first treatment units. Nitrous oxide was produced and emitted in oxic tanks with nitrite accumulation inside the sewage treatment plant. A certain amount of nitrous oxide was also discharged as dissolved gas through the effluent water. If the amount of dissolved nitrous oxide discharge is not included, 7-14% of total nitrous oxide emission would be overlooked. Based on the greenhouse gas calculation, electrical consumption and the N2O emission from incineration process were major sources in all the plants. For greenhouse gas reduction, oxidation ditch process has an advantage over the other advanced systems due to lower energy consumption, sludge production, and nitrogen removal without gas stripping. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：581 / 590

页数：10

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[1] Spatial and Temporal Variability in Atmospheric Nitrous Oxide Generation and Emission from Full-Scale Biological Nitrogen Removal and Non-BNR Processes [J].