The Impact of  the  Industrial Processing of Oil on the Rainfall Water Quality

Rainfall is a major component of the environment and the main source of the air purification becouse of many pollutants increases who have the most varied sources: various human activities including industry and agriculture, and some household duties. Air purification by means of precipitation is achieved by numerous highly complex mechanisms. The final products of degradation of the pollutant in the air, which are generally harmless, can be reacted with each other in the presence of water, giving rise to the final compounds with a high toxicity. Thus, exhaust, mobile sources of noxious almost identical to those specific activities in the industrial processing of oil, contain lead which is the ideal catalyst for converting SO2 to sulfuric acid in the presence of rainwater, with all the disadvantages that they create. This paper will present an experimental research oabout how rainfall water quality is influenced by the activity of the industrial processing of oil, in a chemical plant in Constanta County.

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Experimental Research on Schoolyard Domestic Sewage by MBR

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.971-973.2088 ◽

2014 ◽

Vol 971-973 ◽

pp. 2088-2091

Author(s):

Yan Xia Liu

Keyword(s):

Water Quality ◽

Experimental Research ◽

Water Consumption ◽

Membrane Bioreactor ◽

Quality Standard ◽

Domestic Sewage ◽

Water Quality Standard ◽

Submerged Membrane Bioreactor ◽

The Impact

The submerged membrane bioreactor (MBR) was used to treat schoolyard domestic sewage. The impact of DO、pH and HRT to the removal effect of COD and NH3-N were studied. The results show that when DO=2.5 mg/L, pH=6.5~8.0, HRT=8 h, the removal effect of COD and NH3-N is above 96% and 88%, which can meet the China Water Quality Standard for Urban Miscellaneous Water Consumption (GB/T 18920-2002).

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THE EFFECT OF METACOGNITIVE INSTRUCTION ON MAXIMIZING EFL LEARNERS’ METACOGNITIVE AWARENESS IN LISTENING

Malaysian Journal of Languages and Linguistics (MJLL) ◽

10.24200/mjll.vol7iss1pp8-17 ◽

2018 ◽

Vol 7 (1) ◽

pp. 8-17

Author(s):

Mahsa Assadi

Keyword(s):

Experimental Research ◽

Listening Comprehension ◽

Intervention Program ◽

Metacognitive Awareness ◽

Listening Test ◽

Efl Learners ◽

Metacognitive Instruction ◽

Before And After ◽

Comprehension Ability ◽

The Impact

This study reports a pre-experimental research on the impact of metacognitive instruction on EFL learners’ metacognitive awareness and their listening performance. To obtain the goal of the study, a group of 30 Iranian intermediate EFL learners, including 14 males and 16 females, were selected randomly. Their ages range from 20 to 24. The participants took part in 16 weeks’ intervention program based on metacognitive pedagogical sequence consisted of five stages. The metacognitive awareness listening questionnaire (MALQ), and a listening test were also used to find changes in metacognitive awareness and listening performance before and after the treatment. The results of comparing pre and posttests scores revealed that metacognitive instruction raised the learners’ metacognitive awareness and helped them improve their listening comprehension ability.

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The impact of lime on water quality when draining clay soils

Ekologija ◽

10.2478/v10055-008-0005-1 ◽

2008 ◽

Vol 54 (1) ◽

pp. 22-28 ◽

Cited By ~ 5

Author(s):

Valentinas Šaulys ◽

Nijolė Bastienė

Keyword(s):

Water Quality ◽

Clay Soils ◽

The Impact

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Анализ «Методики разработки нормативов допустимых сбросов веществ и микроорганизмов в водные объекты для водопользователей» в общем контексте водоохранного законодательства (в порядке обсуждения)

Vodosnabzhenie i sanitarnaia tehnika ◽

10.35776/mnp.2020.02.05 ◽

2020 ◽

Author(s):

I. Saakian ◽

Aleksandr, Grigor’ev ◽

E. Kravets ◽

E. Rudakov ◽

A. Faddeev ◽

...

Keyword(s):

Water Quality ◽

Water Bodies ◽

Anthropogenic Factors ◽

Water Protection ◽

Best Available Technologies ◽

Process Indicators ◽

Water Users ◽

Quality Of Water ◽

Protection Legislation ◽

The Impact

Выполнен анализ действующей редакции Методики разработки нормативов допустимых сбросов веществ и микроорганизмов в водные объекты для водопользователей , утвержденной приказом Минприроды России от 17 декабря 2007 г. 333, на предмет непротиворечивости и соответствия нормам водоохранного законодательства. Выявлена неопределенность применения Методики в условиях воздействия на качество воды природных и антропогенных факторов, не зависящих от конкретного водопользователя. Положения Методики противоречат принципам нормирования воздействия на водные объекты на основе наилучших доступных технологий, что было показано на примерах утвержденных технологических показателей содержания загрязняющих веществ в сточных водах различных отраслей промышленности. Анализ системы нормирования допустимых воздействий на водные объекты и географической дифференциации нормативов качества воды в пределах Российской Федерации вместе с системой целевых показателей качества воды также показал несоответствие Методики основным принципам водоохранного законодательства.The analysis of the current edition of the Methods of developing standards for permissible discharges of substances and microorganisms into water bodies for water users , approved by the Order of the Ministry of Natural Resources of Russia dated December 17, 2007 No. 333 for consilience and compliance with the regulations of the water protection legislation, is carried out. Uncertainty of the application of the Methods in the conditions of the impact of natural and anthropogenic factors that are independent of a specific water user on the quality of water has been identified. The provisions of the Methods contradict the principles of regulating the impact on water bodies based on the best available technologies shown on the examples of approved process indicators of the concentrations of various industrial pollutants in wastewater. An analysis of the system of regulating the permissible impact on water bodies and the geographical differentiation of water quality standards within the boundaries of the Russian Federation, together with the system of water quality targets, also showed that the Methods do not comply with the basic principles of the water protection legislation.

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Assessing the Impact of Maneuver Training on NPS Pollution and Water Quality

10.21236/ada512795 ◽

2008 ◽

Author(s):

James M. Steichen ◽

Stacy L. Hutchinson ◽

Naiqian Zhang ◽

J. M. Hutchinson ◽

Charles Oviatt ◽

...

Keyword(s):

Water Quality ◽

Nps Pollution ◽

The Impact

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Considering the impact of intermittent discharges when modelling overflows

Water Science & Technology ◽

10.2166/wst.1998.0370 ◽

1998 ◽

Vol 38 (10) ◽

pp. 23-30

Author(s):

Sarah Jubb ◽

Philip Hulme ◽

Ian Guymer ◽

John Martin

Keyword(s):

Water Quality ◽

Dissolved Oxygen ◽

Preliminary Investigation ◽

Oxygen Demand ◽

Sediment Oxygen Demand ◽

Combined Sewer Overflows ◽

River Hydraulics ◽

Combined Sewer ◽

The Impact ◽

Curve Equation

This paper describes a preliminary investigation that identified factors important in the prediction of river water quality, especially regarding dissolved oxygen (DO) concentration. Intermittent discharges from combined sewer overflows (CSOs) within the sewerage, and overflows at water reclamation works (WRW) cause dynamic conditions with respect to both river hydraulics and water quality. The impact of such discharges has been investigated under both wet and dry weather flow conditions. Data collected from the River Maun, UK, has shown that an immediate, transient oxygen demand exists downstream of an outfall during storm conditions. The presence of a delayed oxygen demand has also been identified. With regard to modelling, initial investigations used a simplified channel and the Streeter-Phelps (1925) dissolved oxygen sag curve equation. Later, a model taking into account hydrodynamic, transport and dispersion processes was used. This suggested that processes other than water phase degradation of organic matter significantly affect the dissolved oxygen concentration downstream of the location of an intermittent discharge. It is proposed that the dynamic rate of reaeration and the sediment oxygen demand should be the focus of further investigation.

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Metal Contamination of Stream Waters under the Impact of Tanneries

Pesquisas em Geociências ◽

10.22456/1807-9806.19514 ◽

2006 ◽

Vol 33 (2) ◽

pp. 55 ◽

Cited By ~ 1

Author(s):

MARIA LUCIA KOLOWSKI RODRIGUES ◽

MILTON LUIZ LAQUINTINIE FORMOSO

Keyword(s):

Water Quality ◽

Water Discharge ◽

Solid Material ◽

Total Variance ◽

Oxygen Conductivity ◽

Contamination Degree ◽

Iron Aluminum ◽

Relevant Variables ◽

Stream Waters ◽

The Impact

This study evaluated the contamination of water samples from Cadeia and Feitoria rivers (Rio Grande do Sul State, Brazil), affected by tannery activities. From July 1999 to April 2000, four sampling campaigns were performed at ten sites in order to evaluate selected metals and ancillary physicochemical variables. Sample preservation and analyses followed recommendations of the Standard Methods. Factor analysis was used to obtain statistical indexes representing the contamination degree of waters evaluated. The information was summarized in two principal components. The first, which accounted for 50% of the total variance, was associated to a tannery contribution and generated a contamination index. Total, Suspended and Dissolved Solids, Dissolved Oxygen, Conductivity, Chromium, Manganese, Copper, Nickel, Sodium, Calcium, Potassium, and Magnesium were the well-correlated variables with this first component. The water quality decreased from headwaters up to mouth along both streams, but the most contaminated sites were located at the lower reach of Feitoria river (Ivoti and Lindolfo Collor cities), where tanneries are concentrated. After the entrainment of Feitoria waters (São Sebastião do Caí municipality), Cadeia river also presented an increased contamination degree. The application of statistical randomization tests highlighted these same sites as significantly distinct from the others. Water contamination also showed association to flow variations, and a poorer water quality was observed during the dry period (January). The second component, in which Iron, Aluminum, and Suspended Solids were the relevant variables, was loaded with 15% of the total variance. It was linked to natural events, since higher factor scores in this component were obtained during a period of increased water discharge (October), which caused resuspension and entrainment of solid material to the rivers bed. As a final result of the study, sampling stations were classified according to the contamination degree, and graphically represented on a basin map, which synthesized the environmental diagnosis.

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