scholarly journals Long-term recovery of soft-bottom benthos following urban and industrial sewage treatment in the Nervión estuary (southern Bay of Biscay)

2006 ◽  
Vol 313 ◽  
pp. 43-55 ◽  
Author(s):  
Á Borja ◽  
I Muxika ◽  
J Franco
Keyword(s):  
Sewage Treatment ◽  
Bay Of Biscay ◽  
Soft Bottom ◽  
Industrial Sewage

Effect of Wastewater on the Soil and Irrigation Process: A Laboratory Study

2017 ◽  
Vol 1 (1) ◽  
pp. 46-55 ◽  
Author(s):  
Athar Hussain ◽  
Manjeeta Priyadarshi ◽  
Saif Said ◽  
Suraj Negi
Keyword(s):  
Heavy Metals ◽  
Tap Water ◽  
Sewage Treatment ◽  
Daily Intake ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Treated Wastewater ◽  
Surface Water Resources ◽  
Industrial Sewage ◽  
Concentration Levels

Most of the industrial sewage effluents used for irrigation contains heavy metals which cause toxicity to crop plants as the soils are able to accumulate heavy metal for many years. The vegetables grown for the present study were irrigated with treated wastewater brought from a nearby full-scale sewage treatment plant at different compositions along with tap water as a control. The concentration levels of the Cd, Co, Cu, Mn and Zn in the soil were found to below the toxic limits as prescribed in literature. Daily Intake Metals (DIM) values suggest that the consumption of plants grown in treated wastewater and tap water is nearly free of risks, as the dietary intake limits of Cu, Fe, Zn and Mn. The Enrichment Factor for the treated wastewater irrigated soil was found in order Zn> Ni> Pb> Cr> Cu> Co> Mn> Cd. Thus, treated wastewater can be effectively used for irrigation. This will have twofold significant environmental advantages: (1) helpful to reduce the groundwater usage for irrigation and (2) helpful to reduce the stress on surface water resources.

Distribution of Enteric Viruses and Microorganisms in Long-Term Sewage-Treated Soil

1983 ◽  
Vol 15 (5) ◽  
pp. 129-135 ◽  
Author(s):  
Z Filip ◽  
K Seidel ◽  
H Dizer
Keyword(s):  
Soil Bacteria ◽  
Pathogenic Bacteria ◽  
Sewage Treatment ◽  
Anaerobic Bacteria ◽  
Enteric Viruses ◽  
Sewage Irrigation ◽  
Groundwater Samples ◽  
West Berlin ◽  
Aerobic Soil

To determine whether long-term sewage treatment can take place without a pollution risk for soil and groundwater, samples from sewage irrigation fields in West Berlin which have been in use since about 1890 were analyzed for enteric viruses and microorganisms. Enteric viruses were detected in only seven samples from a total number of eighty seven taken from different soil depths. With only one exception, no viruses were found below 60 cm. No viruses were detected in groundwater samples. Long-term sewage irrigation did not result in significant changes in the colony courts of aerobic soil bacteria, but the counts of anaerobic bacteria and actinomycetes were slightly elevated and those of microscopic fungi slightly decreased. Potentially pathogenic bacteria were not detected in soil below 90 cm.

Investigating Land Based Disposal of Bolivar Reclaimed Water, South Australia

1993 ◽  
Vol 27 (1) ◽  
pp. 87-96 ◽  
Author(s):  
G. Schrale ◽  
R. Boardman ◽  
M. J. Blaskett
Keyword(s):  
Current Practice ◽  
Sewage Treatment ◽  
Reclaimed Water ◽  
South Australia ◽  
Working Party ◽  
Underground Water ◽  
Environmental Cost ◽  
Seagrass Beds ◽  
Environment Protection ◽  
Industrial Sewage

The Bolivar Sewage Treatment Works (STW) processes the urban and industrial sewage from the northern and eastern suburbs of Adelaide. The treatment capacity is equivalent to the sewage production of 1.1 million people. The disposal of more than 40 000 ML of reclaimed water into the sea has caused a progressive degradation of about 950 ha of seagrass beds which threatens the sustainability of the fisheries and marine ecosystems of Gulf St. Vincent. The current practice will no longer be viable to achieve compliance with the SA Marine Environment Protection Act, 1990. A Inter-Departmental Working Party recommmended that the Bolivar reclaimed water be disposed by irrigation of suitable land on the coastal plains north of Adelaide. They proposed the construction of two pipelines: a 12 km long pipeline to extend the distribution of reclaimed water in the most intense portion of the 3 500 hectares of irrigated horticulture on the Northern Adelaide Plains, and a second, 18 km long pipeline to deliver the remainder to a more northerly site for irrigation of an estimated 4 000 hectares of hardwood plantations. The paper summarizes the findings as they relate to public health, environmental, technical and financial aspects of land based disposal. Land based disposal would completely eliminate the marine degradation and also arrest the over-use of the NAP underground water resources for horticulture. The total net costs over thirty years for land based disposal are about $ 21.8 million. The ‘horticultural' pipeline of the land based disposal scheme is expected to be commercially viable. A shortfall in revenue from the afforestation component is expected and may need to be considered as an environmental cost of ceasing marine disposal.

scholarly journals Management of wastewater trough theatre

2019 ◽  
Author(s):  
Kristina Tihomirova ◽  
Linda Mezule
Keyword(s):  
Wastewater Treatment ◽  
Teaching Method ◽  
Sewage Treatment ◽  
Student Knowledge ◽  
Cooperation Model ◽  
Treatment Technologies ◽  
Water And Wastewater ◽  
Active Communication ◽  
The University ◽  
Industrial Sewage

Compulsory study course on wastewater treatment and sewage systems contains lectures, classroom calculations, technical project and laboratory practicum. The course is addressing not only the developing skills in wastewater treatment technologies but also provides preparation of professionals that can communicate with institutions involved in water and wastewater sector. Over the years it has been observed that even after receiving the most sophisticated knowledge and highest markings, students often lack skills in practical communication with industry and implementation of theoretical knowledge in praxis. Here we describe student-centred teaching method that is based on the activities that are similar to theatre and allow: (i) the teacher to find and understand the weaker places in student knowledge gained during the semester; (ii) the students to form professional skills during the active communication with colleagues and mentors from industry. The students work in several groups “INDUSTRY”, “MUNICIPALITY” and EXPERTS”, try to find better solution for industrial sewage treatment and cooperation model with the municipality and present their results. After 2 years of the modernisation and adjustment, the training course has created an interest not only from student side but also from the industry representatives that are interested in communication with the new specialists and develop strong contacts with the university.

scholarly journals Long-term dietary segregation of common dolphins Delphinus delphis in the Bay of Biscay, determined using cadmium as an ecological tracer

2005 ◽  
Vol 305 ◽  
pp. 275-285 ◽  
Author(s):  
V Lahaye ◽  
P Bustamante ◽  
J Spitz ◽  
W Dabin ◽  
K Das ◽  
...  
Keyword(s):  
Bay Of Biscay ◽  
Delphinus Delphis ◽  
Common Dolphins

Purification of agro-industrial wastewater from the grease-protein mixture by means of electroflotocoagulation

2002 ◽  
Vol 45 (12) ◽  
pp. 233-240 ◽  
Author(s):  
M. Karpuzcu ◽  
A. Dimoglo ◽  
H.Y. Akbulut
Keyword(s):  
Industrial Wastewater ◽  
Sewage Treatment ◽  
Protein Mixture ◽  
Technological Characteristics ◽  
Industrial Sewage

The process of agro-industrial sewage treatment with the aim of extracting grease from the waters is studied by means of electroflotocoagulation. A method of optimising the construction of electroflotocoagulation apparatus for sewage treatment is offered that allows passing from a laboratorial model to an industrial specimen that possesses the same level of technological characteristics. Multiple examples are given of applying electroflotocoagulation technology for sewage treatment from proteins and grease under different conditions.

scholarly journals Environmental Surveillance for Poliovirus and Other Enteroviruses: Long-Term Experience in Moscow, Russian Federation, 2004–2017

Viruses ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 424 ◽  
Author(s):  
Olga E. Ivanova ◽  
Maria S. Yarmolskaya ◽  
Tatiana P. Eremeeva ◽  
Galina M. Babkina ◽  
Olga Y. Baykova ◽  
...  
Keyword(s):  
Sewage Treatment ◽  
Time Frame ◽  
Environmental Surveillance ◽  
Detection Rates ◽  
Echovirus 30 ◽  
Relative Value ◽  
Afp Surveillance ◽  
The One

Polio and enterovirus surveillance may include a number of approaches, including incidence-based observation, a sentinel physician system, environmental monitoring and acute flaccid paralysis (AFP) surveillance. The relative value of these methods is widely debated. Here we summarized the results of 14 years of environmental surveillance at four sewage treatment plants of various capacities in Moscow, Russia. A total of 5450 samples were screened, yielding 1089 (20.0%) positive samples. There were 1168 viruses isolated including types 1–3 polioviruses (43%) and 29 different types of non-polio enteroviruses (51%). Despite using the same methodology, a significant variation in detection rates was observed between the treatment plants and within the same facility over time. The number of poliovirus isolates obtained from sewage was roughly 60 times higher than from AFP surveillance over the same time frame. All except one poliovirus isolate were Sabin-like polioviruses. The one isolate was vaccine-derived poliovirus type 2 with 17.6% difference from the corresponding Sabin strain, suggesting long-term circulation outside the scope of the surveillance. For some non-polio enterovirus types (e.g., Echovirus 6) there was a good correlation between detection in sewage and incidence of clinical cases in a given year, while other types (e.g., Echovirus 30) could cause large outbreaks and be almost absent in sewage samples. Therefore, sewage monitoring can be an important part of enterovirus surveillance, but cannot substitute other approaches.

Anthropogenic changes to a billabong in New South Wales. 1. Lagoon evolution and phosphorus dynamics

1999 ◽  
Vol 50 (7) ◽  
pp. 689 ◽  
Author(s):  
T. H. Donnelly ◽  
P. W. Ford ◽  
D. McGregor ◽  
D. Allen
Keyword(s):  
Algal Blooms ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Main Process ◽  
Anthropogenic Changes ◽  
P Adsorption ◽  
South Wales ◽  
The Mean

Anthropogenic changes detected in the sediment of a shallow (~1.6 m) billabong (Horseshoe Lagoon) are the result of a Sewage Treatment Plant (STP) connection in 1958 and catchment urbanization around 1974. Nutrient-rich water caused the collapse of macrophyte populations, algal blooms became common, and urbanization increased sediment deposition (~1 cm year −1 ). Changes in P retention were investigated by using dated cores, pore-water element profiles, and water quality records. The lagoon is the last of three STP holding ponds. Ponds 1 and 2 were sand-mining pits; they receive no sediment input and have negligible P adsorption. The Fe:P ratios in sediments from three Australian rivers have a common slope and this relationship was used to examine Fe:P ratios in the anoxic bottom sediments of the lagoon. A potential for effluent P adsorption developed in the lagoon through Fe mobilization and enrichment in the upper sediments and a strong clay–Fe–P association. The mean long- term P adsorption in the lagoon (35±18%) was the result of maintaining clay input to an oxic waterbody. Bacterial sulfate reduction is the main process decreasing available Fe for effluent P adsorption. Appropriately designed systems could expect to maintain effluent P adsorption efficiencies of around 70%.

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