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).

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.

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.

The Study on Removal the PH3 in CO by Dephosphorization Bacteria

2013 ◽  
Vol 781-784 ◽  
pp. 861-868 ◽  
Author(s):  
Jing Deng ◽  
Liang Chen ◽  
Wen Wei
Keyword(s):  
Conversion Rate ◽  
Microbial Growth ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Fast Growth ◽  
Low Concentration ◽  
Domestication Process ◽  
And Performance ◽  
Growth And Reproduction

For finding microbes of degradation phosphine (PH3) in CO, a low concentration PH3 gas in CO was used to induce domestication the microorganism from anaerobic tank of sewage treatment plant. The influence of domestication process was researched in detail, and the microbial growth and performance of dephosphorization domesticated was inspected. The results shown that PH3 concentration, pH, and replaced water have a greatly influence for the process. A group dephosphorization bacterium which have a characteristic of fast growth and reproduction and degradation PH3 in CO to phosphate was acquired after domesticated the bacteria from anaerobic tank more than 11d. Appropriate conditions of dephosphorization bacteria to degradation PH3 are pH=4.5-5.5, 30°C. The phosphine conversion rate was 68.59% and 65.32% for 24h respectively to the concentration of 12 ppm or7ppm PH3 in CO and the 2/3 of products was phosphate primarily. But the aerobic tank bacteria cannot be domesticated.

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.

scholarly journals Degradação do concreto de uma Estação de Tratamento de Esgoto (ETE) por ácido sulfúrico biogênico

2014 ◽  
Vol 4 (2) ◽  
pp. 84-96
Author(s):  
J. Hoppe Filho ◽  
B. Rheinheimer ◽  
S. S. Khoe ◽  
L. V. Artigas ◽  
A. F. Sabbag ◽  
...  
Keyword(s):  
Degradation Mechanism ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Sulfate Attack ◽  
X Ray Diffraction ◽  
Acid Attack ◽  
Sewage Treatment Plants ◽  
Treatment Tank ◽  
Secondary Consequence

RESUMOEm ETEs, o ataque ácido (associado ao ataque por sulfatos como consequência secundária) afeta a pasta de cimento formando etringita e/ou gipsita, provocando expansão, fissuração e friabilidade do material. Este mecanismo de degradação do concreto atinge, também, o C-S-H, reduzindo a capacidade portante e a vida útil da estrutura. O objetivo deste trabalho é apresentar resultados de uma inspeção de uma ETE em funcionamento há aproximadamente 15 anos, onde há visível degradação do concreto por ataque combinado de ácido e sulfato. A análise contempla resultados de amostra coletada em região imediatamente acima do nível do efluente, onde há maior concentração de bactérias, e de testemunho extraído da laje de cobertura do tanque de tratamento. A resistência à compressão do testemunho atende o valor especificado no projeto, apesar de ensaios de microscopia eletronica de varredura e difração de raios-X identificarem a formação de gipsita e etringita no interior do concreto.Palavras chaves: ataque ácido; ataque por sulfatos; durabilidade; concreto armado.ABSTRACTAt sewage treatment plants, acid attack (and sulfate attack as a secondary consequence) degrades the cement paste, forming ettringite and/or gypsum, causing expansion, cracking and brittleness. The degradation mechanism of concrete in sewage treatment plants also affects the calcium silicate hydrate (C-S-H), reducing the mechanical capacity and service life. The aim of this paper is to present results of the inspection of a sewage treatment plant, which has been operating for about 15 years, where there is noticeable degradation of concrete by a combined acid and sulfate attack. The analysis includes results of a sample collected in the region immediately above the effluent, which had the highest concentration of bacteria and a specimen extracted from the treatment tank slab. Compressive strength of the specimen is consistent with the project, although scanning electron microscopy images and X-ray diffraction identified the formation of gypsum and ettringite within the concrete.Keywords: acid attack; sulphate attack; durability; reinforced concrete.

scholarly journals Changes in the quality of a small lowland river in Poland under the influence of pollution and a dam reservoir located in its course

2020 ◽  
Vol 20 (3) ◽  
pp. 145-159
Author(s):  
Donat Hansz ◽  
Katarzyna Kowalczewska-Madura
Keyword(s):  
Water Quality ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Treated Wastewater ◽  
External Loading ◽  
Lowland River ◽  
Dam Reservoir ◽  
Agricultural Areas

AbstractThe study on a small lowland river was conducted in order to determine changes in water quality under external loading (inflow of treated wastewater, runoff from agricultural areas) and the location of a dam reservoir in its course. The 21 km long River Pogona (Greater Poland, Poland) is a small tributary of the Obra Canal in Kościan. In 2004, in its valley, the Jeżewo Reservoir, with an area of 78 ha, was utilized to supply the flow in the Obra Canal during the dry season and to irrigate agricultural areas. The river is also a receiver of treated sewage from the sewage treatment plant in Karolewo. The research, carried out in 2017 at six sampling stations in its course, showed that the discharge of treated wastewater resulted in an increase in conductivity, concentration of ammonium nitrogen, nitrites and total nitrogen in the waters of the River Pogona. On the other hand, the location of the Jeżewo Reservoir in its course contributed to an increase in water temperature, pH, dissolved oxygen, chlorophyll-a and nitrite concentration in the outflowing river. The results showed that the inflow of treated wastewater from the sewage treatment plant, surface runoff from the catchment area and the Jeżewo Reservoir formed in its course, influenced seasonal and spatial changes in the water quality of the River Pogona.

scholarly journals Sustainable Control Strategy for Detecting Activated Toxins in Sewage Management and Waste Water

2021 ◽  
Author(s):  
Jin Xu ◽  
Guang Duan ◽  
Xiujun Lu ◽  
Yan Zhou ◽  
C.B Sivaparthipan ◽  
...  
Keyword(s):  
Control Strategy ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Treated Wastewater ◽  
Research Review ◽  
Environmental Chemical ◽  
Healthcare Facilities ◽  
Drug Products ◽  
Operating Variables

Abstract The causes of diverse, high realization percentages are the Hospital Sewage, and no appropriate therapy for contaminant elimination has been examined. These pollutants and their complicated properties are immune to the laboratory's wastewater treatment plant (WWTPs). In other sentences, certain dynamic chemicals cannot be eliminated by traditional therapy. Environmental chemical contaminants can pose significant threats to global water supplies. In recent times, the wastewater created from medical services, healthcare facilities and laboratories has become more involved with the atmosphere researchers. A Sustainable Control Strategy for Detecting Activated Toxins (SCS-DAT) model is proposed in this research. For three things - traditional drainage features, major priority drug products, and microbiota studies - this analysis picked several multi-speciality facilities with non-identical pre-treatments. The research review assesses innovative processes' effectiveness for disposing of these three components from treated wastewater before being released into a hazardous water Sewage treatment plant (STP). Regarding the test findings, these two procedures effectively lowered the standard and medication variable of direct and indirect approaches in two out of three treatment methods, MBR and CW, excluding microbe restoration, by following stages. These two substances were found. The results showed 100% ibuprofen, carbamazepine, and frusemide reduction, while CW suggested that ofloxacin was 100% eliminated. The medicines' degradation demonstrated two accelerated oxidation variations, ozonation (O3) and peroxisome (O3-H2O2). pH, O3 availability, time of touch and H2O2 quantities are the main operating variables in AOP. Centred on medicinal products efficacy, traditional O3 treatment is more effective than integrating O3- H2O2 therapy. Therefore, the study proved that MBR combined with ozone proven an ideal technology for the chemical treatment of treated wastewater among several innovations.

scholarly journals Application of Plasma Treatment in Preparation of Soybean Oil Factory Sludge Catalyst and Its Application in Selective Catalytic Oxidation (SCO) Denitration

Materials ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 1609 ◽  
Author(s):  
Lei Zhang ◽  
Chao Yang ◽  
Lei Zhang ◽  
Huibin He ◽  
Min Luo ◽  
...  
Keyword(s):  
Soybean Oil ◽  
Catalytic Oxidation ◽  
Photoelectron Spectroscopy ◽  
Catalyst Activity ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Wastewater Treatment Process ◽  
X Ray ◽  
Selective Catalytic Oxidation

At present, the most commonly used denitration process is the selective catalytic reduction (SCR) method. However, in the SCR method, the service life of the catalyst is short, and the industrial operation cost is high. The selective catalytic oxidation absorption (SCO) method can be used in a low temperature environment, which greatly reduces energy consumption and cost. The C/N ratio of the sludge produced in the wastewater treatment process of the soybean oil plant used in this paper is 9.64, while the C/N ratio of the sludge produced by an urban sewage treatment plant is 10–20. This study shows that the smaller the C/N ratio, the better the denitration efficiency of the catalyst. Therefore, dried oil sludge is used as a catalyst carrier. The influence of different activation times, and LiOH concentrations, on catalyst activity were investigated in this paper. The denitration performance of catalysts prepared by different activation sequences was compared. The catalyst was characterized by Fourier Transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and scanning electron microscope (SEM). The experimental results showed that: (1) When the concentration of the LiOH solution used for activation is 15%, and the activation time is four hours, the denitration effect of the catalyst is the best; (2) the catalyst prepared by activation before plasma roasting has the best catalytic activity.

scholarly journals The Efficiency of Nitrogen Compounds Removal in Wastewater Treatment Plant

2018 ◽  
Vol 28 (3) ◽  
pp. 5-16
Author(s):  
Monika Suchowska-Kisielewicz ◽  
Aleksandra Sieciechowicz ◽  
Zofia Sadecka
Keyword(s):  
Nitrogen Concentration ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Treated Wastewater ◽  
Nitrogen Compounds ◽  
Biological Processes ◽  
Limit Value ◽  
The Impact ◽  
Kjeldahl Nitrogen

Abstract In sewage treatment plants for removing nitrogen compounds are used biological processes of nitrification and denitrification. The parameters determining the efficiency of biological processes of nitrogen removal are organic carbon ratio (BOD5) to total Kjeldahl nitrogen (TKN), temperature and pH. The impact of these parameters on the operation of the sewage treatment plant with an RLM of 45,000 based on operational data from the period 2011-2013 has been assessed. The efficiency of removing nitrogen compounds from sewage in the analysed treatment plant depended on the temperature of sewage and the quotient BOD5/TKN. Even at the optimal ranges of BOD5/TKN ratio temperature at 10°C nitrogen concentration in the treated wastewater was about 3 times higher than the limit value, and the removal efficiency of nitrogen varied between about 30 to 60%.

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