scholarly journals Effective Sewage Treatment with Direct Current Ionization Technology

2019 ◽  
Vol 8 (6) ◽  
pp. 5030-5033 ◽  
Keyword(s):  
Treatment Plan ◽  
New Technology ◽  
Waste Water Treatment ◽  
Sewage Treatment ◽  
Treatment Plant ◽  
Constant Rate ◽  
Treatment Technologies ◽  
Electro Coagulation ◽  
Biological Methods ◽  
Sewage Waste

Sewage treatment is the process of removing contaminants from wastewater and household sewage, runoff effluents from domestic, commercial and institutional units. Various waste water treatment technologies have been compared for the Kullu, Manali area where there are about 50 Sewage Treatment Plan (STPs) installed and operated by various hotels, industries and 7 common STPs operated by the Irrigation and Public Health (IPH) Department for treatment of the sewage waste generated from the household and hotels in the three Municipal areas. The sewage load to the treatment plant installed by individual hotels is not available at a constant rate from the hotel industries. This variation in quantity and quality of the sewage generation during the tourist and non- tourist season disturb the whole mechanism based upon the biological methods. Thus there is a need to test a new technology to overcome these difficulties and which is easy to handle and operate and economical to run. Detailed study in association with Himachal Pradesh IPH Department in Manali Campus on new technology called the “Electro- Coagulation Technique” for treatment of the sewage waste was conducted by installing a demonstration study plant with a capacity of 60 Kilo- litre capacity per day ( 60 KLD). It has been concluded that this technology coagulates the suspended solids and settles into sludge, oxidizes organics and reduces soluble COD, and destroys pathogens

scholarly journals The application of ferrate for sewage treatment: pilot- to full-scale trials

2013 ◽  
Vol 14 (1) ◽  
pp. 93-99 ◽  
Keyword(s):  
New Technology ◽  
Waste Water Treatment ◽  
Operating Cost ◽  
Sewage Treatment ◽  
Treatment Plant ◽  
Full Scale ◽  
Substantial Cost ◽  
Substantial Cost Saving ◽  
Treatment Practice ◽  
High Doses

This paper aims to study a relative new technology, the online generation and application of ferrate(VI), for sewage treatment, from pilot to full scale trials at Hailsham North Wastewater Treatment Plant of Southern Water Ltd of UK. The work presented in this paper has significant impact on the use of ferrate(VI) in water and waste water treatment practice; the online production and application of ferrate(VI) resolves problems of the instability and needs no transportation. The current efficiency of ferrate(VI) generation was up to 70% through the developed system, which is relatively high. For achieving the same phosphorus removal target from the crude sewage, the ferrate dose required was in a very lower range, 0.01 - 0.2 mg Fe6+/L in comparison with high doses of ferric sulphate; these will reduce the chemical demand and sludge production and therefore result in a low operating cost and generate substantial cost saving in treating sewage.

scholarly journals Uptake and bio-transformation of telmisartan by cress (Lepidium sativum) from sewage treatment plant effluents using high-performance liquid chromatography/drift-tube ion-mobility quadrupole time-of-flight mass spectrometry

2021 ◽  
Author(s):  
Tamara Lang ◽  
Markus Himmelsbach ◽  
Franz Mlynek ◽  
Wolfgang Buchberger ◽  
Christian W. Klampfl
Keyword(s):  
High Performance ◽  
Waste Water Treatment ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Parent Drug ◽  
Water Treatment Plant ◽  
Lepidium Sativum ◽  
Waste Water Treatment Plant ◽  
Flight Mass Spectrometry

AbstractIn the present study, the uptake and metabolization of the sartan drug telmisartan by a series of plants was investigated. Thereby for seven potential metabolites, modifications on the telmisartan molecule such as hydroxylation and/or glycosylation could be tentatively identified. For two additional signals detected at accurate masses m/z 777.3107 and m/z 793.3096, no suggestions for molecular formulas could be made. Further investigations employing garden cress (Lepidium sativum) as a model plant were conducted. This was done in order to develop an analytical method allowing the detection of these substances also under environmentally relevant conditions. For this reason, the knowledge achieved from treatment of the plants with rather high concentrations of the parent drug (10 mg L−1) was compared with results obtained when using solutions containing telmisartan in the μg - ng L−1 range. Thereby the parent drug and up to three tentative drug-related metabolites could still be detected. Finally cress was cultivated in water taken from a local waste water treatment plant effluent containing 90 ng L−1 of telmisartan and harvested and the cress roots were extracted. In this extract, next to the parent drug one major metabolite, namely telmisartan-glucose could be identified.

scholarly journals Fluorides in Wastewater Discharges: Toxic Challenges to the St. Lawrence River Biological Community

1996 ◽  
Vol 31 (4) ◽  
pp. 809-838 ◽  
Author(s):  
Peggy Wallis ◽  
Ronald Gehr ◽  
Perry Anderson
Keyword(s):  
Waste Water Treatment ◽  
Sewage Treatment ◽  
Treatment Plant ◽  
Aquatic Organisms ◽  
Water Treatment Plant ◽  
Aquatic Systems ◽  
Waste Water Treatment Plant ◽  
Biological Community ◽  
Fingernail Clams ◽  
St Lawrence River

Abstract This literature review examines the risk to fluvial organisms of fluoride released to the St. Lawrence River by the Montréal Urban Community waste-water treatment plant. The following key points are presented regarding the behaviour of fluoride in aquatic systems: fluoride is not removed by primary sewage treatment methods; fluoride from the treatment plant is rapidly diluted to background levels; aquatic plants do not accumulate significant levels of fluoride; fluoride is generally sequestered in the shell/exoskeleton/skeleton and skin of animals and released via the urinary system; fluoride ion is not very toxic in aquatic systems; there is rarely a large difference between acute and chronic (or lethal and sublethal) threshold levels of fluoride in aquatic systems; the most sensitive aquatic organisms are trout and fingernail clams; finally, the only significant evidence of synergistic action is with aluminium. It is concluded that fluoridation of the city of Montréal’s drinking water would not pose any significant additional risk to the biological community in the receiving waters of the St. Lawrence River.

scholarly journals Solutions for increasing the quality of hydro-technical building elements obtained by numerical simulation

2019 ◽  
Vol 85 ◽  
pp. 02011
Author(s):  
Alexandru Fodorean ◽  
Adrian Cureu ◽  
Oana Giurgiu ◽  
Dan Opruţa
Keyword(s):  
Waste Water ◽  
Numerical Simulation ◽  
Wastewater Treatment ◽  
Numerical Simulations ◽  
Numerical Models ◽  
Waste Water Treatment ◽  
Sewage Treatment ◽  
Treatment Plant ◽  
Design Phase

Sewage treatment remains a delicate subject and requires technical improvements to increase the efficiency of the systems responsible for the treatment. Numerical simulations are also a very useful tool, especially if they are used during the design phase. Thus, the paper aims to present the results obtained by CFD numerical simulations in the case of an important element within an existing wastewater treatment plant, namely the waste water treatment well, thus obtaining constructive solutions of a better functionally to the designed version. Through these, the work demonstrates the necessity of analyzes with CFD methods during design of the main elements of hydrotechnical constructions, but also the necessity of adjusting the numerical models with results obtained from experiments, measurements. The results show that the modifications described in the paper would bring significant improvements in waste disposal.

scholarly journals Wetland park: an important element for sewage recycling in Kaliningrad

2007 ◽  
pp. 627-633
Author(s):  
Sergey Umansky
Keyword(s):  
Waste Water Treatment ◽  
Sewage Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Waste Water Treatment Plant ◽  
Vistula Lagoon ◽  
Treatment Level ◽  
Ecological Requirements ◽  
Park Area ◽  
The Baltic

Kaliningrad is a large industrial city with the population more than 400 thousand people thathas no modem constructions for sewage treatment. Almost I 00 million m3 of sewage isannually discharged into the Pregolja River and the Vistula Lagoon. City authorities have aproject for constructing a full cycle of waste water treatment plant. However, the offereddevelopment plan and treatment level will not promote decreasing of eutrophication in theVistula Lagoon. In this article the opportunity of using water plants for additional cleaningsewage of Kaliningrad has being considered. For this purpose it is suggested to organize awetland park in a territory along the right bank of the Kaliningrad naval channel in an areawith 86.6 knl. The infrastructure for such wetland-park might be used for recreationalpurpose too. The proposal is to consider the wetland park as an effective commercialenterprise occupying certain sector in the economy of the city. The basic requirements toorganize the wetland park area are that: (I) The wetland-park area should be located nearbythe mechanical and biological sewage treatment; (2) Two zones should be created, anindustrial and a recreational zone; (3)The borders of zones should be separated by natural or artificial elements of landscape, forexample, forestations; (4) Economic and ecological requirements regarding the sewagemanagement in Kaliningrad city are related to the necessity of meeting the demands of theBaltic Region, in order to solve the environmental problems of the Baltic Sea.

scholarly journals POTENCIAL DE REÚSO DE EFLUENTES TRATADOS PARA IRRIGAÇÃO PERIURBANA NO MUNICÍPIO DE GUARABIRA/PB

Irriga ◽  
2021 ◽  
Vol 1 (4) ◽  
pp. 671-677
Author(s):  
LIBIANE MARINHO BERNARDINO ◽  
PATRÍCIA DA SILVA COSTA ◽  
VERA LÚCIA ANTUNES DE LIMA ◽  
RENER LUCIANO DE SOUZA FERRAZ
Keyword(s):  
Descriptive Analysis ◽  
Waste Water Treatment ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Liquid Waste ◽  
Oxygen Demand ◽  
Short Supply ◽  
Treated Effluent ◽  
Thermotolerant Coliforms

POTENCIAL DE REÚSO DE EFLUENTES TRATADOS PARA IRRIGAÇÃO PERIURBANA NO MUNICÍPIO DE GUARABIRA/PB     LIBIANE MARINHO BERNARDINO1; PATRÍCIA DA SILVA COSTA2; VERA LÚCIA ANTUNES DE LIMA3 E RENER LUCIANO DE SOUZA FERRAZ4.   1 Mestranda em Gestão e Regulação em Recursos Hídricos, Unidade Acadêmica de Tecnologia do Desenvolvimento, UFCG, Rua Luiz Grande, s/n, Frei Damião, CEP 58540-000, Sumé, PB, Brasil, [email protected] 2 Doutoranda em Engenharia Agrícola, Unidade Acadêmica de Engenharia Agrícola, UFCG, Rua Aprigio Veloso, 882, Universitário, CEP 58429-900, Campina Grande, PB, Brasil, [email protected] 3 Profa. Doutora em Engenharia Agrícola, Unidade Acadêmica de Engenharia Agrícola, UFCG, Rua Aprigio Veloso, 882, Universitário, CEP 58429-900, Campina Grande, PB, Brasil, [email protected] 4 Prof. Doutor em Engenharia Agrícola, Unidade Acadêmica de Desenvolvimento Sustentável do Semiárido, UFCG, Rua Luiz Grande, s/n, Frei Damião, CEP 58540-000, Sumé, PB, Brasil, [email protected]     1 RESUMO   A água é um recurso finito que se encontra escasso, o que justifica a busca por gestão e inovação de práticas que a preserve. O objetivo da pesquisa é avaliar o potencial de reúso dos efluentes tratados para irrigação periurbana. Foram levantados dados de uma Estação de Tratamento de Esgotos (ETE), localizada no município de Guarabira, PB, e operada pela Companhia de Água e Esgotos do Estado da Paraíba (CAGEPA), durante o período de janeiro a dezembro de 2019. Analisou-se os seguintes parâmetros físico-químicos e bacteriológicos: Potencial Hidrogeniônico (pH), Condutividade Elétrica (CE), Demanda Bioquímica de Oxigênio (DBO), Demanda Química de Oxigênio (DQO), Sólidos Totais (ST), Oxigênio Dissolvido (OD), Fósforo Total, e Coliformes Termotolerantes. Os dados foram submetidos à análise descritiva e expresso em valores mínimos, máximos e médios. Os indicadores foram satisfatórios para irrigação restrita, porém com a necessidade de tratamento complementar para determinados cultivos. O potencial de reúso   dos efluentes tratados na ETE pode beneficiar uma área de 118,7 ha considerando uma demanda de irrigação de 18.000 m³ ha-1 ano-1, o que demonstra ser um recurso sustentável e que precisa ser regulamentado no Brasil.   Palavras-chave: recursos hídricos, resíduos líquidos, tratamento de água, fertirrigação.     BERNARDINO, L. M.; COSTA, P. S.; LIMA, V. L. A.; FERRAZ, L. R. S. REUSE POTENTIAL OF TREATED EFFLUENTS FOR PERIURBAN IRRIGATION IN THE MUNICIPALITY OF GUARABIRA/PB     2 ABSTRACT   Water is at the center of sustainable development and a finite resource that is in short supply, which justifies the search for management and innovation of practices that preserve it. This research aims to evaluate the potential for reuse of treated effluent for periurban irrigation. Data were collected from a Sewage Treatment Plant (STP), located in the municipality of Guarabira, PB, and operated by the Water and Sewage Company of the State of Paraíba (CAGEPA), during the period from January to December 2019, with the analysis of the following physicochemical and bacteriological parameters: Hipogenic Potential (pH), Electrical Conductivity (CE), Biochemical Oxygen Demand (DBO), Chemical Oxygen Demand (DQO), Total Solids (ST), Dissolved Oxygen (OD), Total Phosphorus, and Thermotolerant Coliforms. The data were submitted to the descriptive analysis and expressed as minimum, maximum and average values. The indicators were satisfactory for restricted irrigation, but with the need for complementary treatment for certain crops. The potential for reuse of the effluents treated in the ETE can benefit an area of 118.7 ha considering an irrigation demand of 18,000 m³ ha-1 year-1, which demonstrates to be a sustainable resource that needs to be regulated in Brazil.   Keywords: Water resources, liquid waste, water treatment, fertigation.

scholarly journals Case Study Regarding the Variation of the Qualitative Parameters of Wastewater

2021 ◽  
Vol 72 (2) ◽  
pp. 1-8
Author(s):  
Andrei Radu Iova ◽  
Cecilia Violeta Neagu ◽  
Daniela Cretu
Keyword(s):  
Wastewater Treatment ◽  
Oxygen Consumption ◽  
Total Nitrogen ◽  
Treatment Plan ◽  
Nitrogen Concentration ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Total Nitrogen Concentration ◽  
Wastewater Quality ◽  
Biochemical Oxygen Consumption

Romania is making efforts in order to enforce the Directive concerning urban waste water treatment and was left behind by other member states. Starting from the premise that the lack of a proper treatment of wastewater can negatively influence the quality of the emissary in which they are discharged., we proposed that in this paper we analyze the main indicators of wastewater quality, identifying also the causes of water pollution. For this purpose, we followed the variation of five representative indicators of wastewater from Calarasi Wastewater Treatment Plan: chemical oxygen consumption, biochemical oxygen consumption, total nitrogen, total phosphorus, suspended solids. The best results in purification were observed regarding the biochemical oxygen consumption (over 95%). The low temperature of wastewater at the entrance to the Wastewater Treatment Plant during winter leads to a difficult exploitation of the biological step and implicitly to the increase of the phosphorus and total nitrogen concentration in the effluent, which means a weak process of eutrophication in the emissary.

A Research on the Efficiency of Hydrolysis-AICS in Sewage Treatment Plant in North-Cities

2015 ◽  
Vol 737 ◽  
pp. 635-638
Author(s):  
Ke Zhao ◽  
Zheng Kong
Keyword(s):  
Waste Water ◽  
Low Temperature ◽  
Removal Rate ◽  
Waste Water Treatment ◽  
National Level ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Urban Sewage ◽  
Cod Removal Rate

The general existing low temperature problem in winter of north-city sewage treatment plant in the process of waste water treatment seriously affect the efficiency of the work. The research objective of this paper is to conduct investigate in the application of AICS method in Jilin Province, a sewage treatment plant engineering example has been employed to monitor the effluent of the indicators of sewage treatment under the low temperature condition during the winter the winter low temperature under the condition of sewage treatment plant effluent of the indicators; to understand the operation situation of sewage treatment plant, and to study the efficiency of hydrolysis - AICS processing waste-water. The result shows that: hydrolysis - AICS process works well in low temperature condition, the per TN removal rate is 76.79%, average removal rate of NH3 - N is 85.76%, average TP removal rate was 93.4%, the average COD removal rate was 90.6%. The effluent meet the national level A discharge standard requirements of "urban sewage treatment plant pollutant discharge standard". And through the retrenchment of the second pond and other ancillary equipment, Hydrolysis-AICS process could efficiently reduce the costs. Besides, the advantages of Hydrolysis-AICS process also include occupying small area, and operating easily and simply. Therefore Hydrolysis-AICS process is very helpful to achieve the sewage discharging standard in the northern towns.

Operational Experiences with the Industrial and Communal Waste Water Treatment System in the District of Linz

1990 ◽  
Vol 22 (5) ◽  
pp. 87-92 ◽  
Author(s):  
Gerd E. Reichel
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Hydroelectric Plant ◽  
Waste Water Treatment ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Treatment System ◽  
Digested Sludge ◽  
Water Treatment System

The waste water treatment system of the central region Linz is described. Because of the construction of the hydroelectric plant in Abwinden-Asten a central sewage treatment plant for 22 communities and the waste waters of the chemical and steel industry was constructed. Purification efficiency in terms of BOD5 is 93 % and 83 % for COD. The anaerobic digested sludge is deposited in lagoons.

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