The comprehensive measurement method of energy conservation and emission reduction in the whole process of urban sewage treatment based on carbon emission

Zhang, Yue; Ge, Tonggang; Liu, Jing; Sun, Yongli; Liu, Yu; Zhao, Qing; Tian, Tengfei

doi:10.1007/s11356-021-14472-7

Cited by 24 publications

(8 citation statements)

References 39 publications

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“…Some of the recent publications on urban sanitation and carbon emissions are Li et al [58], Chen et al [59], Ortz-Rodriguez et al [60], Zhang et al [61], and Collac ¸o & da Curz [62]. Due to unsanitary circumstances, these studies mostly restricted the carbon footprint, worsening the natural environment.…”

Section: Plos Onementioning

confidence: 99%

Sanitation, water, energy use, and traffic volume affect environmental quality: Go-for-green developmental policies

Khalil¹,

Abbas

Hussain

et al. 2022

PLoS ONE

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Carbon emissions are primarily the result of human activity in urban areas. Inadequate sanitary facilities, contaminated drinking water, nonrenewable energy, and high traffic congestion have all impacted the natural ecosystem. Using data from 1975 to 2019, the study assessed the impact of the aforementioned variables on Pakistan’s carbon emissions in light of this crucial fact. The ARDL cointegration method was used to estimate the short- and long-run parameter estimates. Urban sanitation challenges and energy consumption increase carbon emissions, which affects the natural environment by raising a country’s carbon intensity. Economic expansion confirmed the inverted U-shaped relationship between carbon emissions and economic growth to verify the Environmental Kuznets Curve (EKC) hypothesis in the long run. In contrast, the monotonically rising function of carbon emissions provides evidence of the nation’s economic development in the short run. Access to clean drinking water improves population health and encourages the purchase of eco-friendly products. The government must improve sanitation services and use renewable energy sources to enhance air quality.

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Section: Plos Onementioning

confidence: 99%

Sanitation, water, energy use, and traffic volume affect environmental quality: Go-for-green developmental policies

Khalil¹,

Abbas

Hussain

et al. 2022

PLoS ONE

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“…The carbon emission of sewage treatment industry accounts for 1−2% of the total social emissions, and is an important field of carbon emission reduction. [ 2 ] As an important part of sewage treatment process, it is necessary to study the carbon emission characteristics of sludge treatment. In the process of sludge treatment and disposal, a large number of chemicals and energy will be consumed, however, carbon compensation can also be formed through energy recovery or production of green products.…”

Section: Introductionmentioning

confidence: 99%

Double Advantages of Nutrients and Biostimulants Derived from Sewage Sludge by Alkaline Thermal Hydrolysis Process for Agricultural Use: Quality Promotion of Soil and Crop

Hao,

Li,

Tan

et al. 2024

Advanced Science

Self Cite

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Low‐carbon alkaline thermal hydrolysis of sewage sludge for the production of high‐quality plant‐growth‐promoting nutrients and biostimulants is a growing concern for sludge resource utilization in agriculture. Thus, this study aims to investigate functional characteristics and soil biochemical effects of sewage sludge‐derived nutrients and biostimulants (SS‐NB). The content of heavy metals in SS‐NB decreased by 47.39–100%, and an increase in soil protease, invertase, and soil nutrient utilization rates are observed in SS‐NB groups. SS‐NB substituted for chemical fertilizer increased the diversity and evenness of microbial community and reduced the abundance of the soil‐borne bacterial genus Arthrobacter. The dominant community of SS‐NB100 group is mainly enriched in Microvirga, Ensifer, Novosphingobium, Bosea and Ellin6055, which are principally beneficial symbiotic bacteria of plants and participated in C and N cycles. Moreover, SS‐NB reduced the accumulation of Ktedonobacteria and Nitrosospira, which are involved in the production of CO2 and N2O, and also enhanced the coordination of soil microorganisms with enzyme activities and nutrient utilization rate. In conclusion, the results suggest that SS‐NB exerts a positive effect on reducing greenhouse gas emissions and preventing soil‐borne diseases, and can further enhance collaboration with soil enzyme activity and soil nutrient utilization by stimulating soil microorganisms.

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“…As a result, industries around the world have adapted their development strategies and implemented emission-reducing measures. According to statistics from major developed countries, the wastewater treatment industry is among the top ten contributors to total carbon emissions, accounting for 1% to 2% [2]. It is expected that the total greenhouse gas emissions (in terms of CO 2 equivalent) from China's wastewater treatment industry will be as high as 365 million t by 2030.…”

Section: Introductionmentioning

confidence: 99%

Multi-Objective Optimization Based on Simulation Integrated Pareto Analysis to Achieve Low-Carbon and Economical Operation of a Wastewater Treatment Plant

Liao,

Li,

Liu

et al. 2024

Water

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It is essential to reduce carbon emissions in wastewater treatment plants (WWTPs) to achieve carbon neutrality in society. However, current optimization of WWTPs prioritizes the operation cost index (OCI) and effluent quality index (EQI) over greenhouse gas (GHG) emissions. This study aims to conduct a multi-objective optimization of a WWTP, considering GHG emissions, EQI, and OCI. The anaerobic-anoxic-oxic integrated membrane bioreactor (AAO-MBR) process in an actual WWTP was selected as a typical case, tens of thousands of scenarios with combinations of six operational parameters (dissolved oxygen (DO), external carbon resource (ECR), poly aluminum chloride (PAC), internal reflux ratio (IRR), external reflux ratio (ERR), and sludge discharge (SD)) were simulated by GPS-X software (Hydromantics 8.0.1). It was shown that ECR has the greatest impact on optimization objectives. In the optimal scenario, the main parameters of ATDO, MTDO, IRR, and ERR were 0.1 mg/L, 4 mg/L, 50%, and 100%, respectively. The EQI, OCI, and GHG of the best scenario were 0.046 kg/m3, 0.27 ¥/m3, and 0.51 kgCO2/m3, which were 2.1%, 72.2%, and 34.6% better than the current situation of the case WWTP, respectively. This study provides an effective method for realizing low-carbon and economical operation of WWTPs.

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The comprehensive measurement method of energy conservation and emission reduction in the whole process of urban sewage treatment based on carbon emission

Cited by 24 publications

References 39 publications

Sanitation, water, energy use, and traffic volume affect environmental quality: Go-for-green developmental policies

Sanitation, water, energy use, and traffic volume affect environmental quality: Go-for-green developmental policies

Double Advantages of Nutrients and Biostimulants Derived from Sewage Sludge by Alkaline Thermal Hydrolysis Process for Agricultural Use: Quality Promotion of Soil and Crop

Multi-Objective Optimization Based on Simulation Integrated Pareto Analysis to Achieve Low-Carbon and Economical Operation of a Wastewater Treatment Plant

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