Energy Production from Sewage Sludge in a Proposed Wastewater Treatment Plant

The implemented technologies for sewage sludge processing are still very limited in Egypt. Unfortunately, dealing with the produced sludge is mainly given to the drying process through natural drying beds neglecting quality of the dried sludge. The undertaken work is devoted to provide a design proposal for a typical wastewater treatment plant suitable for the small communities on a very limited area of land compared to that required to construct the conventional treatment plant that serves the same population. The proposed sewage treatment plant is certainly beneficial in reducing the capital costs by 26%, in addition to about 20% reduction in the running costs. On the other hand, electricity generated from energy produced by anaerobic digestion of sewage sludge reduces the electrical power requirements from the main grid network to about 27% in the proposed wastewater treatment plant.

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ANALYSIS OF THE MOBILITY OF HEAVY METALS IN SLUDGE FOR THE SEWAGE TREATMENT PLANT IN DALESZYCE

Structure and Environment ◽

10.30540/sae-2020-010 ◽

2020 ◽

Vol 12 (2) ◽

pp. 85-92

Author(s):

ROBERT KOWALIK ◽

JAROSŁĄW GAWDZIK ◽

BARBARA GAWDZIK ◽

ALICJA GAWDZIK

Keyword(s):

Heavy Metals ◽

Wastewater Treatment ◽

Sewage Sludge ◽

Wastewater Treatment Plant ◽

Metal Content ◽

Sewage Treatment ◽

Sewage Treatment Plant ◽

Treatment Plant ◽

Total Metal Content ◽

Treatment Processes

Sewage sludge is a by-product of wastewater treatment processes. However, it has high fertilising and soil-forming properties, but it cannot always be used for this purpose. The two main criteria limiting their natural use are heavy metals and parasite eggs. Sewage sludge taken from the Daleszyce wastewater treatment plant has been analysed for heavy metals. For this purpose a space analysis was performed to divide the total metal content into four mobility fractions. The mobility issue determines the ability of an element, or one of its forms, to move in the environment. The studies were performed using a four-stage BCR procedure. The results were analyzed and compared to the limits applicable in Poland for sewage sludge intended for environmental use.

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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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Sewage Wastewater Treatment Plant Inverted AAO Process Design

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1079-1080.480 ◽

2014 ◽

Vol 1079-1080 ◽

pp. 480-483

Author(s):

Li Wang

Keyword(s):

Wastewater Treatment ◽

Process Design ◽

Wastewater Treatment Plant ◽

Sewage Treatment ◽

Sewage Treatment Plant ◽

Treatment Plant ◽

Structure Design ◽

Main Task ◽

The City

The graduation design topic for a sewage treatment plant processesdesign - inverted AAO process in durian. Main task is tantamount to designaccording to the requirement of the nature of the city sewage, sewage, scalepreliminary design to complete sewage treatment plant and single processing structure design.

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Startup and operation of a large wastewater treatment plant in warm climate and under modified conditions – a case study

Water Practice & Technology ◽

10.2166/wpt.2012.004 ◽

2012 ◽

Vol 7 (1) ◽

Cited By ~ 1

Author(s):

M. Sarioglu

Keyword(s):

Wastewater Treatment ◽

Wastewater Treatment Plant ◽

Sewage Treatment ◽

Sewage Treatment Plant ◽

Treatment Plant ◽

Lessons Learned ◽

Warm Climate ◽

Inlet Conditions ◽

Treated Sewage Effluent ◽

The City

This study summarizes the findings and lessons learned from the start up and operation of a large wastewater treatment plant in warm climate under modified conditions. The treatment works comprise of a newly constructed sewage treatment plant located in the city of Dubai, U.A.E with an ultimate capacity of 300 Ml/d. The plant can be reviewed in three major parts; (i) liquid stream, (ii) sludge stream and (iii) odor control stream all having the latest state of the art technology and related equipments. The challenge in starting up the plant was related to the fact that only 20% of the flow was available in the form of hauled sewage to be hauled from septic tanks located in various parts of the city and also from the nearby industry which was uncontrollable. Furthermore, some parts of the plant were not ready to be commissioned on the day of the planned startup not to mention that effluent irrigation main was not complete to receive the treated sewage effluent (TSE) from the plant. A comprehensive commissioning plan was implemented and followed during the startup which was tailored according to the actual conditions. The plant commissioning was conducted in a phased sequence to cater for the expected and unexpected changes related to the inlet conditions. Commissioning and operation of the plant was carried for over 18 months with success considering the challenging and difficult conditions.

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Assessment of the Effects of Wastewater Treatment Plant Modernization by Means of the Field Olfactometry Method

Water ◽

10.3390/w11112367 ◽

2019 ◽

Vol 11 (11) ◽

pp. 2367 ◽

Cited By ~ 2

Author(s):

Andrzej Kulig ◽

Mirosław Szyłak-Szydłowski

Keyword(s):

Wastewater Treatment ◽

Wastewater Treatment Plant ◽

Sewage Treatment ◽

Sewage Treatment Plant ◽

Treatment Plant ◽

Windward Side ◽

Wastewater Management ◽

Odor Concentration ◽

Ex Post ◽

Before And After

Methodological aspects of odor studies in ex-post analyses for Polish wastewater management facilities were analyzed based on the example of a modernized and enlarged wastewater treatment plant (WWTP) in Mazovia, in the vicinity of the Warsaw agglomeration. It is a mechanical–biological treatment plant with increased efficiency of biogen removal, using activated sludge in the treatment process, with a maximum hydraulic capacity of 60,000 m3/day. Olfactometric research was carried out by means of a method based on identification and characterization of the odor plume emitted from the examined source. This paper presents the results of odor intensity assessment (in sensory examinations according to a 6-stage scale) and odor concentration measurement (using portable field olfactometers) after the completion of the project, and compares them with similar studies conducted before the commencement of the investment. A total of 10 measurement series were carried out before modernization, and 12 after modernization of the WWTP. Odor concentration and intensity were determined, and the current meteorological situation was assessed at the measurement and observation points (receptors) located within the premises (in total 462 points) and around the WWTP (342 points). In each series of measurements on the windward side of the treatment plant, the background of air pollution with odorous substances was marked. The research showed that air flowing into the area of the sewage treatment plant is clean in terms of odor. During the research, basic sources of odor nuisance were identified, and their impact before and after modernization was characterized. The results presented in radar diagrams show changes in the percentage distribution of frequency of occurrence of individual intensity values at receptor points within and outside the area of the treatment plant. After modernization, a significant decrease in the concentration of odor emitted from the sludge dewatering building and sludge containers was determined. The air-tightness of the sewage channel (covered with concrete slabs and sealed) resulted in a significant decrease in the concentration of odor emitted from this source. Waste (in particular, sewage sludge) collected in the emergency waste storage yard was identified as the main source of odor nuisance. The waste, even after modernization, was an emitter of odorous compounds spreading outside the area of the WWTP. Nevertheless, as a result of the investment, the desired effect of reduction of the degree of odor nuisance was achieved.

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Investigation of Heavy Metal Pollutants in a Sewage Treatment Plant of Changchun in Frozen Period

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.343-344.1265 ◽

2011 ◽

Vol 343-344 ◽

pp. 1265-1268

Author(s):

Ying Zi Lin ◽

Chang Hu Cao ◽

Jun Yin ◽

Hai Jun Qi

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Wastewater Treatment ◽

Wastewater Treatment Plant ◽

Sewage Treatment ◽

Sewage Treatment Plant ◽

Treatment Plant ◽

Metal Pollutants ◽

Urban Sewage ◽

Heavy Metal Pollutants

According to the heavy metal investigation of some practical data in Changchun sewage treatment plant. For wastewater treatment plant and the commonly used treatment process wastewater process of the distribution of heavy metals are analyzed. We studied the heavy metals pollutant removal efficiency of situation with A/O process of wastewater treatment plant in frozen period. And make a comparative analysis of heavy metals pilot plant and demonstration project in water, determine target pollutants and focus on removal. Thus, under low temperature conditions so as to sewage treatment plants effectively remove heavy metal pollutants to provide theoretical guidance for the control of urban sewage treatment by-product of the deposition process to improve the quality of urban sewage treatment and provide scientific basis.

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Assessment of Sludge Utilization Technologies — A Case of Tianjin Qingninghou Landfill

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.518-523.3282 ◽

2012 ◽

Vol 518-523 ◽

pp. 3282-3285

Author(s):

Jian Feng Yin ◽

Yao Yang ◽

Hong Tao Bai ◽

He Xu

Keyword(s):

Wastewater Treatment ◽

Wastewater Treatment Plant ◽

Acid Soil ◽

Sewage Treatment ◽

Treatment Plant ◽

Soil Improvement ◽

Cement Clinker ◽

Municipal Sewage ◽

Alkaline Soil ◽

Dried Sludge

As the increase rate of municipal sewage treatment, the reuse, disposal, and management of sewage sludge generated by wastewater treatment have become an issue of public concern due to the substantial quantity of sludge generated in China. On the basis of summarizing technologies of sludge disposal at home and abroad, the paper sampled and analyzed pH, moisture content, nutrition contents and heavy metal contents in sludge from Tianjin Qingninghou landfill, to assess the possible utilization technologies. The testing results showed that the concentrations of Cu, approximately 1790.97mg•kg-1, was so high that sludge can not be reused from Dongli wastewater treatment plant, while dredged sediment from Dagu River could be used in co-landfilling, land improvement of neutral and alkaline soil, the production of cement clinker, as well as further dewatered and dried sludge from Jizhuangzi, Xianyang Road and Beichen wastewater treatment plant. In addition, sludge could be used for acid soil improvement and making brick from Jizhuangzi and Beichen, to extend life of the landfill and achieve the goal of sustainable development.

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Optimum Design of Phosphorus and Nitrogen Removal from Domestic Wastewater Treatment Plant

International Journal of Engineering & Technology ◽

10.14419/ijet.v7i4.20.25945 ◽

2018 ◽

Vol 7 (4.20) ◽

pp. 310

Author(s):

Ali Hadi Ghawi

Keyword(s):

Wastewater Treatment ◽

Wastewater Treatment Plant ◽

Sewage Treatment ◽

Sewage Treatment Plant ◽

Treatment Plant ◽

Domestic Wastewater ◽

Simulation Software ◽

Phosphorus Concentration ◽

Plant Design ◽

Nitrogen And Phosphorus

In this study, a sewage treatment plant was designed for the city of Al-Nasiriyah in Dhi Qar governorate in southern Iraq serving 316083 inhabitants. The resulting treated water is suitable for agricultural irrigation and can be discharged to the Euphrates River when needed by adding nitrogen and phosphorus removal units to the wastewater treatment plant. The obtained plant design has been verified and optimized by implementing the proposed plant layout in the GPS-X 5.0 modeling and simulation software (Hydromantis). Where the results of the design showed that the total phosphorus flow is higher than the desired limit of 2 mg / L, due to the excessive release during anaerobic digestion. Control of phosphorus concentration can be controlled by adding chemicals (iron or aluminum salts) in different parts of the wastewater treatment plant. In this case, two different control strategies can be implemented: adding aluminum doses in both water and sludge lines (at Chem1 and Chem2 points) or adding aluminum doses in the water line only (at point Chem2). The second strategy showed that it is the most efficient in controlling the concentration of phosphorus and nitrogen produced, which meets the limits of the Iraqi standard of water used in irrigation.

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Earthquake Impact on the Sewage Treatment Plant and Emergency Measures

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.243-249.5076 ◽

2011 ◽

Vol 243-249 ◽

pp. 5076-5079 ◽

Cited By ~ 1

Author(s):

Xiao Yun Wang ◽

Ai Min Fu

Keyword(s):

Wastewater Treatment ◽

Wastewater Treatment Plant ◽

Sewage Treatment ◽

Sewage Treatment Plant ◽

Treatment Plant ◽

Domestic Wastewater ◽

Treatment Unit ◽

Treatment Measures ◽

Pre Treatment ◽

The Impact

Sewage treatment plant from the pre-treatment unit, biological treatment unit, sludge processing units and related facilities for the earthquake discussed the impact of disasters on the wastewater treatment plant, gives the corresponding contingency measures. Made the transition phase of the wastewater treatment measures in order to provide domestic wastewater treatment plant to develop preventive measures earthquake reference.

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