scholarly journals Cleaning the Kafirnigan River From Sewage Pollution

2020 ◽  
Vol 6 (11) ◽  
pp. 126-131
Author(s):  
P. Murodov ◽  
O. Amirov ◽  
P. Khuzhaev
Keyword(s):  
Negative Impact ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Treated Wastewater ◽  
Water Drainage ◽  
Sewage Pollution ◽  
Current State ◽  
Treatment Facilities ◽  
The City

The influence of the discharged treated wastewater on the ecology of the Kafirnigan River is considered. The data on the current state of sewage treatment facilities in the city of Dushanbe are given and an assessment of the environmental efficiency of these treatment facilities is given. Preliminary calculations of costs for the construction of a new sewage treatment plant in Dushanbe have been made. The article is devoted to the current problem of cleaning storm sewers. It should be noted that storm water drainage, like wastewater, has a negative impact on the environment. Before the wastewater is disposed of, it is necessary to treat it in a special way, subjecting it to treatment of varying degrees and depths.

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.

Protesting the “Perfect City”

Memory Lands ◽  
2018 ◽  
Author(s):  
Christine M. DeLucia
Keyword(s):  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
King Philip's War ◽  
Urban Indians ◽  
Tribal Communities ◽  
Dugout Canoes ◽  
Social Opportunities ◽  
Indigenous Perspectives ◽  
The City

This chapter follows Native and Euro-American communities in eastern Massachusetts through the twentieth and twenty-first centuries, examining a series of commemorations and counterprotests that unfolded in urbanizing areas and related sites. It analyzes how Bostonians’ conceptions of the city and modernity tended to exclude Native peoples from both, instead relegating them to the past—despite the presence of numerous “Urban Indians” in the growing metropolis, who were seeking employment and social opportunities. It considers a series of pageants and historical markers erected across the Commonwealth, as well as Native pushback against dominant Euro-American narratives about history, such as a 1970 gathering in Patuxet/Plymouth, Massachusetts that foregrounded Indigenous perspectives and inaugurated an annual National Day of Mourning. The chapter also details how tribal communities challenged plans to build a sewage treatment plant on Deer Island, on grounds considered intensely sensitive for their ties to the incarcerations of King Philip’s War. Finally, it illuminates a recent series of memorial journeys along the Charles River and Boston Harbor Islands in which mishoonash (Native dugout canoes) have played important roles in reconnecting Native descendants to the landscapes of ancestors, as well as providing avenues for Indigenous solidarities into the future.

scholarly journals Differences in the ASM model caused by data structure

2018 ◽  
Vol 45 ◽  
pp. 00036
Author(s):  
Zbigniew Kowalewski
Keyword(s):  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Treated Wastewater ◽  
Municipal Sewage ◽  
Insufficient Amount ◽  
The Usa ◽  
Plant Monitoring ◽  
Model Family

The process of designing and exploiting municipal sewage treatment plants has become much simpler and more efficient thanks to mathematical modeling. The ASM model family is able to simulate the operation of existing or designed objects in a satisfactory manner. The basic problem in Poland is the insufficient amount of data for simulations coming from plant monitoring. It is provided to create unstable model results with difficulties in calibration and validation. The aim of this article is to confirm how the amount of data and its completeness will affect the quality of the simulation performed in the ASM model. The study object is a sewage treatment plant located in Chicago in the USA. It is a sewage treatment plant operating with activated sludge technology, with regular monitoring of the quality of raw and treated wastewater. For modeling, a variant of the ASM model built into the BioWin 5.2 software was used.

Activated carbon for the removal of pharmaceutical residues from treated wastewater

2014 ◽  
Vol 69 (11) ◽  
pp. 2372-2380 ◽  
Author(s):  
Mats Ek ◽  
Christian Baresel ◽  
Jörgen Magnér ◽  
Rune Bergström ◽  
Mila Harding
Keyword(s):  
Activated Carbon ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Treated Wastewater ◽  
Resource Utilisation ◽  
Aquatic Life ◽  
Efficient System ◽  
Chemical Structures ◽  
Pharmaceutical Residues

Pharmaceutical residues, which pass naturally through the human body into sewage, are in many cases virtually unaffected by conventional wastewater treatment. Accumulated in the environment, however, they can significantly impact aquatic life. The present study indicates that many pharmaceutical residues found in wastewater can be removed with activated carbon in a cost-efficient system that delivers higher resource utilisation and security than other carbon systems. The experiment revealed a substantial separation of the analysed compounds, notwithstanding their relatively high solubility in water and dissimilar chemical structures. This implies that beds of activated carbon may be a competitive alternative to treatment with ozone. The effluent water used for the tests, performed over 20 months, originated from Stockholm's largest sewage treatment plant. Passing through a number of different filters with activated carbon removed 90–98% of the pharmaceutical residues from the water. This paper describes pilot-scale tests performed by IVL and the implications for an actual treatment plant that has to treat up to several thousand litres of wastewater per second. In addition, the advantages, disadvantages and costs of the method are discussed. This includes, for example, the clogging of carbon filters and the associated hydraulic capacity limits of the activated carbon.

A Certain City Public Building Energy Consumption and Energy Saving of Economic Research and Statistics

2012 ◽  
Vol 512-515 ◽  
pp. 2842-2847
Author(s):  
Wei Yu ◽  
Wei Teng Li ◽  
Mei Juan Huo
Keyword(s):  
Economic Analysis ◽  
Statistical Power ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Economic Research ◽  
Pump System ◽  
Heat Pump System ◽  
Site Monitoring ◽  
The City

In this paper, the main public buildings, Lang fang City, Hebei province, the research summary and statistical power to the city building a sewage treatment plant sewage source heat pump system operating on-site monitoring, the monitoring results of economic analysis with traditional heating methods from the initial investment and operation of both comprehensive economic analysis and comparison.

Sewage Wastewater Treatment Plant Inverted AAO Process Design

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.

scholarly journals Influence of storms on the emission of pollutants from sewage into waters

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Monika Suchowska-Kisielewicz ◽  
Ireneusz Nowogoński
Keyword(s):  
Environmental Protection Agency ◽  
Negative Impact ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Heavy Precipitation ◽  
Climatic Conditions ◽  
Storm Water Management Model ◽  
Rainy Weather ◽  
The Impact

AbstractDuring heavy precipitation, chemical and biological pollutants from urban and agricultural areas enter the waters from storm overflows as a result of infiltration and inflow, as well as via uncontrolled outflows from water treatment plants. Infiltration and inflow of rainwater into sewers is an especially popular and major worldwide problem. Climate forecasts indicate changes in climatic conditions towards an increase in the intensity and frequency of torrential rainfalls. It may therefore be assumed that the negative impact of rainwater on water quality will increase. This article attempts to address the question of the impact of pollution from wastewater introduced into water during rainy weather to the receiver. The assessment of the impact of rainfalls on a receiver was carried out on the basis of a simulation of pollution loads from sewage introduced into a river by storm overflows based on data from monitoring the amount of rainfall and simulating the operation of storm overflows using Environmental Protection Agency Storm Water Management Model (EPA SWMM). The obtained results were compared with the pollutant loads discharged at the same time from the sewage treatment plant (STP). In addition, the article assesses possible improvement solutions to reduce the negative impact of storm overflows on water.

scholarly journals Investigation of pipes and sprinklers scaling at the golf course turf irrigated by treated wastewater of Mzar plant in Agadir-Morocco

2020 ◽  
Vol 9 (6) ◽  
pp. 440-446 ◽  
Author(s):  
Said Mohareb ◽  
Abdallah Hadfi ◽  
Ilham Karmal ◽  
Said Ben-Aazza ◽  
M'barek Belattar ◽  
...  
Keyword(s):  
Calcium Carbonate ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Physicochemical Analysis ◽  
Treated Wastewater ◽  
Carbonate Apatite ◽  
X Ray Diffraction ◽  
X Ray ◽  
And Performance

In Agadir city, the reuse of treated wastewater for irrigation of green spaces has faced the problem of scaling of the pipes of these waters. This research paper aims at studying the phenomenon of scaling caused by the treated wastewater from the Mzar sewage treatment plant in the city of Agadir in south-west of Morocco. These waters are used in the irrigation of golf turf “Ocean”. The formation of solid deposits in the irrigation systems has decreased their lifetime, and consequently, a loss of load and performance is occurring. Thus, the sprinklers used in golf turf irrigation are plugged in the first weeks of the beginning of their operation. The wastewater used for the irrigation of the golf was analyzed at various points using physicochemical measurements: in the golf entry, at the tarpaulin and the exit of the sprinklers. The samples of treated wastewater and obtained scale were studied. The characterization of the scale samples formed in the passageways of the treated wastewaters has been performed by X-ray fluorescence spectrometry, X-ray diffraction, thermogravimetric analysis, differential thermal analysis and scanning electron microscopy. The results of the physicochemical analysis of the waters show that they are full of bicarbonates (653 mg/L), chloride (478 mg/L), nitrate (412 mg/L), sodium (425 mg/L) and in calcium (199 mg/L). Their pH is slightly alkaline. The analysis of the scale reveals that it is rich in calcium and phosphorus. It is formed of calcium carbonate (CaCO3), silica (SiO2), calcium silicate (Ca2SiO4), hydroxylapatite (Ca10P6O26H2), calcium carbonate-apatite(Ca10 (PO4) 6CO3) and silicate calcium and magnesium (Ca5MgSi3O12).

scholarly journals Designing a Decentralized Sewage Treatment Plant

2021 ◽  
Vol 8 (1) ◽  
pp. 16-28
Author(s):  
Tareq Ahmed Ismaeel
Keyword(s):  
Wastewater Treatment Plants ◽  
Negative Impact ◽  
Water Discharge ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Oxygen Demand ◽  
Total Suspended Solid ◽  
Aquatic Life ◽  
Inorganic Substances

The contamination in Tigress and Euphrates Rivers in Iraq has reached a high level for several reasons; one of these reasons is the discharged of sewage treatment plant (STP) effluent in the rivers, as well as other wastewater treatment plants. But the major problem is to taker discharge of wastewater to the river directly with no treatment! Many tankers in different places in all governorates in Iraq are utilized because of the absence of sewers which collecting the domestic discharge. Wastewater discharge in the rivers increases the pollution levels and especially when the river level decreases during summer seasons. In the last few years, the pollution was dramatically exacerbated. In this paper, an optimum Design for Decentralized Sewage Treatment Plant will be presented. Discharge of sewage tanks in the Tigris River has a severe negative impact on the environment; causing a deficiency in the dissolved oxygen in the water and increasing the limits of toxicity due to the accumulation of organic and inorganic substances. Pollution has become a serious issue that directly affects the aquatic life, agriculture, and people. The design unit has good specifications for effluent water discharge. TSS (Total Suspended Solid) decreased to less than 10 ppm, BOD (Biochemical Oxygen Demand) to less than 10 ppm, and COD (Chemical Oxygen Demand) to less than 50 ppm. The designed unit showed a good and easy operation and maintenance with less chemicals used.

scholarly journals An Approach towards Minimizing Sewage Inflow in Kelo River across Raigarh City

2021 ◽  
Vol 9 (VII) ◽  
pp. 2149-2153
Author(s):  
Ashish Pradhan
Keyword(s):  
River Water ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
The State ◽  
Industrial City ◽  
Treatment Technologies ◽  
Basic Need ◽  
The City

Raigarh is a rapidly growing industrial city situated in the state of Chhattisgarh, spread over an area of 46.54 km2. It is characterized by its rising population, mounting urbanization, and motorization. The population, of the city, is 1,66,460 as per the census year 2011 and it will be increased by 2,90,988 till the year 2035. There will be an increase not only economically but also there will be a rise in population along with infrastructure works so there is a basic need at the construction of a sewage treatment plant with a view of sufficient capacity to treat the sewage. The objectives of this study are to review and evaluate sewage treatment technologies and propose a sewage treatment plant to improve Kelo River water.

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