Environmental Sustainability Assessment of a New Sewage Treatment Plant in China Based on Infrastructure Construction and Operation Phases Emergy Analysis

Due to excessive resource consumption and pressing environmental issues of the sewage treatment industry, there is extensive attention in China. Given the unique craft production process in the sewage treatment system, a series of integral emergy indicators have been used to evaluate the environmental sustainability based on infrastructure construction and operation stage emergy analysis. Taking a new typical sewage treatment plant as an example, this paper performed a case study. The results illustrate that (1) the infrastructure construction process emergy (approximate 92.6%) is more critical than sewage treatment process emergy; (2) nonrenewable resource is the primary factor for the emergy analysis, followed by energy (23.5%) and purchased supply (7%); (3) cement, steel, and gravel have dominant impacts on the nonrenewable resource emergy; (4) the emergy sustainability index is 0.001101, which displays weak environmental sustainability; (5) the unit emergy value (UEV) of the new sewage treatment plant is 3.40 × 1012 sej/m3; (6) sensitivity analysis results of the hypothesis demonstrate that nonrenewable resources have significant fluctuations (6.903%) while, for the indicators, emergy sustainability index (ESI) (4.8072%) has the most significant impact; and (7) wastewater is a major contributor. In light of comprehensive discussions, two positive measures are proposed in order to ameliorate the environmental sustainability.

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Chemical characterization of vermicompost of sewage sludge with different proportions of diatomaceous material

Revista Brasileira de Engenharia Agrícola e Ambiental ◽

10.1590/1807-1929/agriambi.v21n8p519-523 ◽

2017 ◽

Vol 21 (8) ◽

pp. 519-523

Author(s):

Fabíola M. Braga ◽

Paulo H. S. Cardoso ◽

Mário H. C. Barbosa ◽

Márcio N. Rodrigues ◽

Regynaldo A. Sampaio ◽

...

Keyword(s):

Sewage Sludge ◽

Environmental Sustainability ◽

Sewage Treatment ◽

Sewage Treatment Plant ◽

Treatment Plant ◽

Chemical Characterization ◽

Biofuel Production ◽

Eisenia Foetida ◽

Organic Compost

ABSTRACT The pursuit for waste recovery has been the best way to contribute to environmental sustainability. The mix of sewage sludge (SS) from Sewage Treatment Plant with diatomaceous material containing oil (DE), used as a filter in biofuel production, can form a substrate rich in minerals and organic matter through vermicomposting. Therefore, this study aimed to produce vermicompost using worms, Eisenia foetida, from a pre-compost (PC) of sewage sludge and garden pruning residues mixed with different proportions of DE in relation to PC: 0; 7.53; 15.06; 22.59; and 30.12% v/v. The design was randomized complete blocks with five treatment replicates. The chemical characteristics of the vermicompost were analyzed after a period of four months. The proportion of up to 30.12% v/v of DE met the criteria established for agriculture uses, registration and marketing of the product as organic compost in accordance with the Normative Instructions SDA 27/2006 and 25/2009 from the Ministry of Agriculture.

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Heavy metals in outflows from a sewage treatment plant and in waters and sediments of ponds supplied with them

Oceanological and Hydrobiological Studies ◽

10.2478/v10009-009-0051-3 ◽

2009 ◽

Vol 38 (4) ◽

Author(s):

Stefan Tucholski ◽

Kazimierz Markiewicz ◽

Emilia Markiewicz ◽

Marcin Duda

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Sewage Treatment ◽

Sewage Treatment Plant ◽

Treatment Plant ◽

Sewage Water ◽

Post Treatment ◽

Metal Concentrations ◽

Heavy Metal Concentrations ◽

System A

Heavy metals in outflows from a sewage treatment plant and in waters and sediments of ponds supplied with themThe examination of total amounts of heavy metals (Hg, Cd, Cu, Pb, Cr, Ni, Zn) was conducted in the outflow from a sewage treatment plant and in the waters and sediments of ponds supplied with them. As the water passed through the pond system, a decrease of heavy metal concentrations in the post-treatment sewage water supplying the ponds was observed. The highest concentrations of heavy metals were found in the outflow from the sewage treatment plant and lower concentrations were observed in the water of pond 1 (except for Zn), which was the direct receiver of post-treatment sewage, while the lowest values were noted in the final pond. The concentration of heavy metals in the sediments decreased in consecutive ponds. The highest concentrations were determined in the sediment of pond 1 that received the post-treatment sewage directly from the sewage treatment outflow, whereas the lowest values were estimated in the sediments of pond number 4, which was the final pond in the system.

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Sedimentation, Mineralization and Resuspension of Sludge in a Sewerage System: A Case Study

Water Science & Technology ◽

10.2166/wst.1985.0216 ◽

1985 ◽

Vol 17 (6-7) ◽

pp. 1223-1231

Author(s):

A. S. Hogendoorn-Roozemond

Keyword(s):

Sewage Treatment ◽

Sewage Treatment Plant ◽

Treatment Plant ◽

Weather Conditions ◽

Quantitative Information ◽

Weather Data ◽

Organic Load ◽

Sewerage System ◽

System A

Quantitative information was obtained on the processes of sedimentation, mineralization and resuspension of organic matter in a combined sewerage system by means of statistical analysis of dry and wet weather data on sewage flows. The effects of temperature and length of intermittent dry weather periods on daily pollutant loads were also evaluated. For the sewerage system investigated it was found that in summer 5-26% of the BOD produced is mineralized in the system before reaching the sewage treatment plant. Due to sedimentation under dry weather conditions up to 12% of the daily organic load produced may be present in the sewers as resuspendable deposits; in winter this percentage may even amount to 20-30% because of slow mineralization.

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The use of constructed wetlands to upgrade treated sewage effluents before discharge to natural surface water in texel island, The Netherlands – pilot study

Water Science & Technology ◽

10.2166/wst.1997.0205 ◽

1997 ◽

Vol 35 (5) ◽

pp. 231-237 ◽

Cited By ~ 6

Author(s):

M. Schreijer ◽

R. Kampf ◽

S. Toet ◽

J. Verhoeven

Keyword(s):

Sewage Treatment ◽

Sewage Treatment Plant ◽

Treatment Plant ◽

Chemical Precipitation ◽

Pilot Scale ◽

E Coli ◽

System A ◽

Treated Sewage ◽

Wetland System ◽

High Degree

Since 1988 experiments have been carried out on a pilot scale on polishing of sewage treatment plant (STP) effluent in a constructed wetland system, a combination of a macrophyte bed and a lagoon. The hydraulic retention time (HRT) has been between one and ten days. At HRTs of 2-3 days a favourable oxygen regime and a high degree of removal of E. coli bacteria could be obtained. The natural alternation of low and high oxygen levels resulted in an extra nitrogen removal from the low levels of nitrogen in the effluent of the STP. Phosphorus removal in the wetland system under these conditions was low, therefore chemical precipitation has to take place in the STP. The favourable results of the study have led to the construction of a full scale 3.5 ha wetland system for the treatment of 3500 m3 effluent day−1 in 1994. The HRT is 2.1 days at dry weather flow. The purpose of this wetland is to further polish the STP effluent in order to match the water quality of the natural local surface waters.

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Environmental sustainability of an energy self-sufficient sewage treatment plant: Improvements through DEMON and co-digestion

Water Research ◽

10.1016/j.watres.2015.02.013 ◽

2015 ◽

Vol 74 ◽

pp. 166-179 ◽

Cited By ~ 81

Author(s):

Thomas Schaubroeck ◽

Haydée De Clippeleir ◽

Norbert Weissenbacher ◽

Jo Dewulf ◽

Pascal Boeckx ◽

...

Keyword(s):

Environmental Sustainability ◽

Sewage Treatment ◽

Sewage Treatment Plant ◽

Treatment Plant

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The survey on odor emission characteristics in a sewage treatment plant by using passive samplers

Journal of Odor and Indoor Environment ◽

10.15250/joie.2014.13.1.20 ◽

2014 ◽

Vol 13 (1) ◽

pp. 20-27 ◽

Cited By ~ 5

Author(s):

Han-Soo Kim ◽

◽

Suk-Jun Lee ◽

Yong-Jeong Lee ◽

Sun-Tae Kim

Keyword(s):

Sewage Treatment ◽

Sewage Treatment Plant ◽

Treatment Plant ◽

Passive Samplers ◽

Emission Characteristics ◽

Odor Emission

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Analysis and balance of phosphorous removal from wastewater at urban wastewater treatment plant

Pollack Periodica ◽

10.1556/606.2020.15.2.13 ◽

2020 ◽

Vol 15 (2) ◽

pp. 142-151

Author(s):

Peter Lukac ◽

Lubos Jurik

Keyword(s):

Wastewater Treatment ◽

Wastewater Treatment Plant ◽

Wastewater Treatment Plants ◽

Sewage Treatment ◽

Sewage Treatment Plant ◽

Treatment Plant ◽

Phosphorus Recovery ◽

Anaerobic Sludge ◽

Biological Phosphorus Removal ◽

The Mean

Abstract:Phosphorus is a major substance that is needed especially for agricultural production or for the industry. At the same time it is an important component of wastewater. At present, the waste management priority is recycling and this requirement is also transferred to wastewater treatment plants. Substances in wastewater can be recovered and utilized. In Europe (in Germany and Austria already legally binding), access to phosphorus-containing sewage treatment is changing. This paper dealt with the issue of phosphorus on the sewage treatment plant in Nitra. There are several industrial areas in Nitra where record major producers in phosphorus production in sewage. The new wastewater treatment plant is built as a mechanicalbiological wastewater treatment plant with simultaneous nitrification and denitrification, sludge regeneration, an anaerobic zone for biological phosphorus removal at the beginning of the process and chemical phosphorus precipitation. The sludge management is anaerobic sludge stabilization with heating and mechanical dewatering of stabilized sludge and gas management. The aim of the work was to document the phosphorus balance in all parts of the wastewater treatment plant - from the inflow of raw water to the outflow of purified water and the production of excess sludge. Balancing quantities in the wastewater treatment plant treatment processes provide information where efficient phosphorus recovery could be possible. The mean daily value of P tot is approximately 122.3 kg/day of these two sources. The mean daily value of P tot is approximately 122.3 kg/day of these two sources. There are also two outflows - drainage of cleaned water to the recipient - the river Nitra - 9.9 kg Ptot/day and Ptot content in sewage sludge - about 120.3 kg Ptot/day - total 130.2 kg Ptot/day.

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Changes of microbial indices of water quality in the Vistula and Brda rivers as a result of sewage treatment plant operation

Oceanological and Hydrobiological Studies ◽

10.2478/v10009-007-0049-7 ◽

2008 ◽

Vol 37 (2) ◽

Author(s):

Maciej Walczak

Keyword(s):

Water Quality ◽

Sewage Treatment ◽

Sewage Treatment Plant ◽

Treatment Plant ◽

Sewage Treatment Plants ◽

Plant Operation ◽

Treated Sewage ◽

Microbiological Parameters ◽

Microbial Indices

Changes of microbial indices of water quality in the Vistula and Brda rivers as a result of sewage treatment plant operationThis paper reports the results of studies of microbiological changes in the water quality of the Vistula and Brda rivers after the opening of sewage treatment plants in Bydgoszcz. The study involved determining the microbiological parameters of water quality. Based on the results obtained, it was found that the quality of the water in both rivers had improved decidedly after the opening of the plants, although an increased number of individual groups of microorganisms was found at the treated sewage outlet from one of the plants.

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