The impact of changes in terms of payment for sewage removal on WWTP valuation using the DCF method

The article describes selected changes in the Water Law and the Collective Water Supply and Collective Sewage Disposal Act and their possible impact on the valuation of wastewater treatment plants. The issue of company valuation using DCF method is presented. By applying this method, several variants of assessment of the impact of changes in the law on the value of the sewage treatment plant in Głogów are proposed.

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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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Reliability of removal of selected pollutants in different technological solutions of household wastewater treatment plants

Journal of Water and Land Development ◽

10.1515/jwld-2017-0078 ◽

2017 ◽

Vol 35 (1) ◽

pp. 141-148 ◽

Cited By ~ 11

Author(s):

Michał Marzec

Keyword(s):

Wastewater Treatment ◽

Activated Sludge ◽

Suspended Solids ◽

Wastewater Treatment Plants ◽

Sewage Treatment ◽

Sewage Treatment Plant ◽

Treatment Plant ◽

Total Suspended Solids ◽

Hybrid Reactor ◽

Limit Values

AbstractThe reliability of removal of selected contaminants in three technological solutions of the household sewage treatment plants was analysed in this paper. The reliability of the sewage treatment plant with activated sludge, sprinkled biological deposit and hybrid reactor (activated sludge and immersed trickling filter) was analyzed. The analysis was performed using the Weibull method for basic indicators of impurities, BOD5, COD and total suspended solids. The technological reliability of the active sludge treatment plant was 70% for BOD5, 87% for COD and 66% for total suspended solids. In the sewage treatment plant with a biological deposit, the reliability values determined were: 30% (BOD5), 60% (COD) and 67% (total suspended solids). In a treatment plant with a hybrid reactor, 30% of the BOD5and COD limit values were exceeded, while 30% of the total suspended solids were exceeded. The reliability levels are significantly lower than the acceptable levels proposed in the literature, which means that the wastewater discharged from the analysed wastewater treatment plants often exceeds the limit values of indicators specified in currently valid in Poland Regulation of the Minister of Environment for object to 2000 population equivalent.

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SCREENING OF CHEMICAL SPILL RISKS TO MUNICIPAL SEWAGE TREA TMENT PLANTS

Water Science & Technology ◽

10.2166/wst.1994.0150 ◽

1994 ◽

Vol 30 (4) ◽

pp. 25-34

Author(s):

M. Ettala ◽

E. Rossi

Keyword(s):

Wastewater Treatment ◽

Wastewater Treatment Plants ◽

Sewage Treatment ◽

Screening Method ◽

Sewage Treatment Plant ◽

Treatment Plant ◽

Chemical Properties ◽

Carbonaceous Material ◽

Field Studies ◽

Municipal Sewage

Seven operational mishaps were specified on the basis of a questionnaire on wastewater treatment plants, some of them large. In this study a process was developed for screening the chemical spill risks to municipal biological sewage treatment plant. Data on wastewater treatment processes, potential spill sources and chemical properties were combined to determine the threshold chemical quantities which may inhibit the removal of carbonaceous material, prevent nitrification and methanogenesis, cause sludge contamination or lead to the aeration capacity being exceeded. Two sewage treatment plants and eleven industrial sites were chosen for field studies. The influence of spill duration and maintenance activities on threshold quantities are discussed. A field survey lasting 1-2 hours at each site was long enough for the most relevant data to be obtained when the screening method developed was applied. Several chemical spill risks to the plants studied were specified. In addition, cases were identified in which failure of the pretreatment facilities for industrial wastewaters could cause severe mishaps at a biological wastewater treatment plant.

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Distributions of Microplastics in Surface Water, Fish, and Sediment in the Vicinity of a Sewage Treatment Plant

Water ◽

10.3390/w12123333 ◽

2020 ◽

Vol 12 (12) ◽

pp. 3333

Author(s):

Tae-Jin Park ◽

Seung-Hyun Lee ◽

Myung-Sung Lee ◽

Jae-Kwan Lee ◽

Ji-Hyoung Park ◽

...

Keyword(s):

Surface Water ◽

Rainy Season ◽

Wastewater Treatment Plants ◽

Sewage Treatment ◽

Sewage Treatment Plant ◽

Treatment Plant ◽

Dry Season ◽

Water Fish ◽

Receiving Waters ◽

The Impact

Microplastics are ubiquitously found in freshwater and marine environments worldwide. In particular, wastewater treatment plants (WWTPs) or sewage treatment plants (STPs) have been recognized as a main source of microplastics in the receiving freshwater. However, only a few studies have been conducted to examine the impact of these facilities on receiving waters. In this study, we investigated the distribution of microplastics in surface water, fish, and sediment near a sewage treatment plant (STP) in the Tanchon stream, one of the main tributaries flowing into the Han River, Korea. The concentration of microplastics in water varied spatially and temporarily, ranging between 5.3 and 87.3 particles/m3 (31.4 ± 28.5 particles/m3). In fish, the concentration in upstream and downstream sites was 7.3 ± 7.3 and 12.4 ± 17.9 particles/fish, respectively. Spatially, the downstream site was the most polluted with microplastics in water and fish. The concentration of microplastics was positively correlated with fish body length and weight. In sediment, microplastic concentration in upstream and downstream sites was 493.1 ± 136.0 and 380.0 ± 144.2 particles/kg, respectively. The contribution of upstream to the microplastic load in downstream was 15.8% in dry season (April), which was higher than that of STP effluent and Yangjaechon creek. Meanwhile, the highest load was observed in STP effluent (5.1%) in rainy season (August). Microplastics were more abundant in water in the rainy season (37.4 ± 37.0 particles/m3) than in the dry season (28.2 ± 22.2 particles/m3). Polyethylene (49%) and polypropylene (18%) were the most abundant polymer types in water, fish, and sediment. Regarding shape of microplastics, fragments were dominant (95%) over fiber and film in water, fish, and sediment.

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Modelling and Life Cycle Assessment of Sewage Treatment Plant (STP) in Lucknow City

International Journal for Research in Applied Science and Engineering Technology ◽

10.22214/ijraset.2021.37208 ◽

2021 ◽

Vol 9 (VII) ◽

pp. 3793-3803

Author(s):

Narendra Pal Gole

Keyword(s):

Wastewater Treatment ◽

Wastewater Treatment Plants ◽

Sewage Treatment ◽

Sewage Treatment Plant ◽

Treatment Plant ◽

Water Concentration ◽

Domestic Wastewater ◽

Upflow Anaerobic Sludge Blanket ◽

Uasb Reactor ◽

Anaerobic Sludge

The implementation of wastewater treatment plants has been a challenge for most countries. Economic resources, political will, institutional strength, and cultural background are important factors that define the trajectory of pollution control in many countries. Technology is sometimes mentioned as one of the reasons hindering further development. Therefore, a key objective of this research is to evaluate the performance of a plant based on the 345 MLD Upflow Anaerobic Sludge Blanket (UASB) technology by analyzing the physical and chemical parameters of the water treated by UASB to evaluate the performance of the plant located. at Bharwara Tech from Gomti Nagar Lucknow. In this study, the performance of the wastewater treatment plant and the UASB reactor was calculated. Wastewater is mixed with domestic wastewater, so the concentration of BOD and COD is relatively low. The amount of biogas produced by the UASB reactor is also less than its design value. All STP inlet and outlet water concentration results are displayed graphically.

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RESEARCH OF SMALL HOUSE HOLD SEWAGE TREATMENT PLANT WORKING / MAŽO BUITINIŲ NUOTEKŲ VALYMO ĮRENGINIO DARBO TYRIMAI

Mokslas - Lietuvos ateitis ◽

10.3846/mla.2015.833 ◽

2015 ◽

Vol 7 (4) ◽

pp. 449-454 ◽

Cited By ~ 1

Author(s):

Ernesta Valeikaitė ◽

Aušra Mažeikienė

Keyword(s):

Wastewater Treatment ◽

Municipal Wastewater ◽

Wastewater Treatment Plants ◽

Sewage Treatment ◽

Sewage Treatment Plant ◽

Treatment Plant ◽

Natural State ◽

Municipal Wastewater Treatment ◽

Environmental Aspect ◽

Treated Sewage

In Lithuania centralized municipal wastewater treatment technologies are applied quite effectively, but there is little evidence of the functioning of individual small wastewater treatment plants. The paper presents the small device AT-6, in the city of Vilnius, and the treated sewage results (BDS7, nitrate, ammonium, total nitrogen, total phosphorus and phosphate concentrations). Studies have shown that treated sewage indicators based on ammonium and nitrate ion concentrations are good. These substances are 2–10 times less than it can be in drinking water according to HN 24: 2003. Concentration of phosphates in the treated sewage ranged from 3.57 to 9.33 mg/L and exceeded the indicators, which were compared. The phosphorus environmental aspect is not dangerous, because treated sewage is not discharged into surface water bodies. Dealing from the pattern of biological indicators and enzymatic activity, the quality of activated sludge is good. Treated sewage does not impair the natural state. Lietuvoje centralizuoto buitinių nuotekų valymo technologijos yra taikomos gana efektyviai, tačiau beveik nėra duomenų, kaip veikia maži individualaus buitinių nuotekų valymo įrenginiai. Straipsnyje analizuojami mažu buitinių nuotekų biologinio valymo įrenginiu AT-6 pasiekiami pagrindiniai išvalymo rodikliai (BDS7, nitratų azoto, amonio azoto, bendrojo azoto, bendrojo fosforo ir fosfatų fosforo koncentracijos). Nuotekų išvalymo laipsnis pagal amonio azoto ir nitratų azoto koncentracijas yra aukštas. Šių medžiagų yra 2–10 kartų mažiau, nei gali būti geriamajame vandenyje pagal HN 24:2003. Fosfatų fosforo (PO4-P) koncentracijos išvalytose nuotekose svyravo nuo 3,57 iki 9,33 mg/l ir viršijo rodiklius, su kuriais buvo lygintos. Šis fosforas aplinkosaugainiu aspektu yra nepavojingas, nes nuotekos nėra išleidžiamos į paviršinį vandens telkinį. Sprendžiant iš rastų biologinių indikatorių ir fermentinio aktyvumo, veikliojo dumblo kokybė yra gera. Išvalytos nuotekos nepablogina gamtos būklės.

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Creation of Zero Carbon Emissions Wastewater Treatment Plants - A Case Study in Crete, Greece

Energy and Environment Research ◽

10.5539/eer.v8n1p64 ◽

2018 ◽

Vol 8 (1) ◽

pp. 64 ◽

Cited By ~ 2

Author(s):

John Vourdoubas

Keyword(s):

Wastewater Treatment ◽

Carbon Emissions ◽

Wastewater Treatment Plants ◽

Sewage Treatment ◽

Sewage Treatment Plant ◽

Treatment Plant ◽

Solar Pv ◽

Tree Plantation ◽

Electricity Use ◽

Zero Carbon

Wastewater treatment plants use energy intensive processes for removing pollutants, consuming large amounts of electricity and emitting greenhouse gases. The possibility of zeroing carbon emissions due to energy use in these plants has been investigated in the current work with reference to the municipal treatment plant of Chania on the island of Crete, Greece. The sewage treatment plant processes 19,400 M3 daily consuming 0.543 KWh per M3 or 3840 MWh annually. The use of locally available renewable energies has been proposed for electricity generation combined with co-generation of heat and power from the biogas already produced in the plant with sludge digestion. Installation of solar-PV systems and wind turbines in the plant could generate electricity, each equal to 25 % of the annual electricity consumption in the plant. Additionally, biogas use can cover all the heating needs in the plant and can generate electricity corresponding at 20% of the total annual grid electricity use. Creation of a tree plantation, irrigated by the treated effluent, of 118.4 hectares, has been proposed which could annually offset carbon emissions due to the remaining grid electricity use. Creation of the tree plantation will create additional benefits, due to existing land desertification in Crete, additionally to carbon sequestration. The size of the required solar-PV and wind turbine systems has been estimated at 640 KWp and 391 KW and their cost at 0.832 mil € and 0.430 mil € correspondingly. Current work indicates that the combined use of solar energy, wind energy, biogas and carbon sequestration with tree plantations could zero carbon emissions in the municipal sewage treatment plant of Chania, Crete.

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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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