EVALUATION OF THE WATER QUALITY OF BAHR EL BAQAR DRAINAGE SYSTEM

Three different drainage systems were built in a roadside car park located on the outskirts of Oviedo (Spain): two sustainable urban drainage systems (SUDS), a swale and a filter drain; and one conventional drainage system, a concrete ditch, which is representative of the most frequently used roadside drainage system in Spain. The concentrations of pollutants were analyzed in the outflow of all three systems in order to compare their capacity to improve water quality. Physicochemical water quality parameters such as dissolved oxygen, total suspended solids, pH, electrical conductivity, turbidity and total petroleum hydrocarbons were monitored and analyzed for 25 months. Results are presented in detail showing significantly smaller amounts of outflow pollutants in SUDS than in conventional drainage systems, especially in the filter drain which provided the best performance.

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ANALISIS BEBAN PENCEMARAN DAN INDEKS KUALITAS AIR SUNGAI SILANDAK DAN SUNGAI SIANGKER, SEMARANG

Management of Aquatic Resources Journal (MAQUARES) ◽

10.14710/marj.v5i3.14399 ◽

2016 ◽

Vol 5 (3) ◽

pp. 127-134

Author(s):

Tyas Lufiana ◽

Haeruddin Haeruddin ◽

Churun Ain

Keyword(s):

Water Quality ◽

Water Samples ◽

Water Quality Index ◽

Quality Index ◽

Sampling Method ◽

Drainage System ◽

Pollution Load ◽

Domestic Waste ◽

Sampling Points

ABSTRAKSungai Silandak dan Singker merupakan sungai penting dalam sistem drainase Semarang Barat.Sungai tersebut telah dialiri limbah industri dan limbah domestik yang berasal dari pemukiman warga sekitar. Adanya masukan limbah industri dan domestik akan berpengaruh terhadap kualitas air sungai seperti peningkatan unsur hara yang dapat menyebabkan eutrofikasi. Tujuan dari penelitian ini adalah mengetahui beban pencemaran (TSS, Nitrat, Fosfat) yang akan bermuara ke Teluk Semarang serta mengkaji status pencemaran berdasarkan metode Indeks Kualitas Air pada Sungai Silandak dan Sungai Siangker. Materi yang digunakan dalam penelitian ini adalah contoh air yang diambil pada bagian hulu, tengah dan hilir.Metode penelitian menggunakan metode survei, teknik penentuan lokasi sampling bersifat purposive pada 6 titik lokasi sempling.Contoh air diambil menggunakan metode komposit sebanyak 500 ml pada pagi dan sore hari dengan interval waktu 1 minggu. Hasil yang diperoleh berdasarkan analisis beban pencemaran yang berasal dari Sungai Silandak yaitu TSS 838,31 mg/detik, nitrat 5,44 mg/detik dan fosfat 5,08 mg/detik dan Sungai Siangker TSS 417,76 mg/detik, nitrat 4,18 mg/detik dan fosfat 3,42 mg/detik. Kualitas air Sungai Silandak bagian hulu, tegah dan hilir secara berturut-turut termasuk dalam kelas tercemar berat, tercemar sedang dan tercemar sangat berat. Sedangkan kualitas air Sungai Siangker bagian hulu, tengah dan hilir secara berturut-turut termasuk dalam kelas tercemar berat, tercemar berat dan tercemar sangat berat. Kata kunci: Beban Pencemaran, Indeks Kualitas Air, Sungai Silandak, Sungai Siangker ABSTRACTSilandak and Siangker were the important rivers in drainage system on West Semarang. The rivers drained industrial and the domestic waste from around the residential. The industrial and domestic wastes influenced the quality of the waters as the improvement of nutriens that made eutrophication. The purpose of this study was to know the pollution load (TSS, nitrate, phosphate) that flew to bay of Semarang and to review status of pollution from Silandak and Siangker rivers based on the Water Quality Index. Samples of water from Silandak and Siangker rives were taken from the upstream, midstream and downstream. The method used in this study a purposive sampling method to determine on 6 sampling points. Water samples were taken 500 ml by composite in the morning and afternoon in a week. The ammount of pollution load from Silandak river was TSS 838.31 mg/second, nitrate 5.44 mg/second and phosphate 5.08 mg/second and the ammount from Siangker river was TSS 417.76 mg/second, nitrate 4.18 mg/second and phosphate 3.42 mg/second. The water quality of Silandak river from the upstream, midstream and downstream in a row classified as heavily polluted, moderately polluted and very heavily polluted class while Siangker river from the upstream, midstresm and downstream rin a row classified heavily polluted, heavily polluted and very heavily polluted class. Key word:Pollution Load, Water Quality Index, Silandak River, Siangker River

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Assessment of Storm Water Quality in Grass Swale by Using Sand Filter Media: a Case Study at UTHM Campus

International Journal of Engineering & Technology ◽

10.14419/ijet.v7i4.30.22105 ◽

2018 ◽

Vol 7 (4.30) ◽

pp. 176

Author(s):

Mohd. Azlan B. Mohd Yusoff ◽

Adel Al- Gheethi ◽

Daniel Aizat B. Dzain

Keyword(s):

Water Quality ◽

Natural Habitat ◽

Drainage System ◽

Quality Parameters ◽

Storm Water ◽

Water Runoff ◽

Sand Column ◽

Storm Water Runoff

Urbanization in Malaysia has contributed to the increased of volume runoff to the drainage system. SUDS (Sustainable Urban Drainage System) / MSMA (Manual Saliran Mesra Alam) has been implement in Malaysia within several of components. Hence, swale is one of the designed and suggested by SUDS or MSMA in order to control the quantity and quality storm water runoff. The present study aimed to determine the quality of storm water runoff in swale and to analyse storm water runoff treatment using sand column as a part of filtration process. Water quality parameters tested included COD, BOD5, DO and TSS. The samples was test with sand column on D30, D60, D90 and DMIX. The results revealed that sand column improved the water quality by 4% to 80%. In conclusion, the sand column can be used to improve the storm water quality and can enhance the natural habitat.

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Analysis of the effects of the stream confluence on the Alagoas Aqueduct

RBRH ◽

10.1590/2318-0331.031816073 ◽

2018 ◽

Vol 23 (0) ◽

Author(s):

Jerônimo Leoni Leandro Lima ◽

Vladimir Caramori Borges de Souza

Keyword(s):

Water Quality ◽

Water Level ◽

Drainage System ◽

Potential Effect ◽

Semiarid Region ◽

Flow Discharge ◽

Social And Economic Development ◽

Level Elevation ◽

Water Elevation

ABSTRACT The project of the Canal do Sertão (Alagoas Aqueduct) is an important step toward social and economic development in the semiarid region of Alagoas State in Brazil. Therefore, a hydrodynamic assessment in the canal is necessary due to a complex drainage system under parameters that were not considered during the project design and execution, mainly along the reach km 67, where it is located a convergent confluence and an overchute structure. The analysis conducted in this study addressed three main aspects: i) verify possible risks to the water quality of the canal, pumped from São Francisco River; ii) evaluate scenarios with risks to the canal structure due a convergent confluence between Riacho Seco and the stream of the tributary basins, which flows over a drainage structure crossing the canal at km 67.28; and iii) analyze the water level elevation into the overchute structure, submerged during flood events, and the water level elevation in the upstream reach of the confluence of the Riacho Seco, with a length of 620 m parallel to the canal and separate by a distance of 80 m from each other, where the level may rise reaching the left levee of the canal. Thus, were assessed the potential effect of the Riacho Seco confluence with the flow discharge of the tributary basins on the overchute structure at km 67.28 of the Canal do Sertão. The analysis of the water elevation and its possible risks to the water quality and the canal structure for different flood scenarios were performed by using the hydrodynamics models HEC-HAS. It was noticed that there is an elevation of the water surface of the tributary streams in the upstream reaches of the convergent confluence and that the drainage structure over the canal do Sertão fails for flow discharge with a return period of 50 years or more, overflowing the water from the drainage system into the channel.

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Spatial-temporal variation and modeling of rainwater quality

Research Society and Development ◽

10.33448/rsd-v10i3.13598 ◽

2021 ◽

Vol 10 (3) ◽

pp. e45810313598

Author(s):

Emmanuel Kennedy da Costa Teixeira ◽

Letícia Gabriela Andrade Policarpo ◽

Suely Riciati da Silva ◽

Eliane Prado Cunha Costa dos Santos

Keyword(s):

Water Quality ◽

Temporal Variation ◽

Suspended Solids ◽

Rainwater Harvesting ◽

Drainage System ◽

Two Cities ◽

The Subject ◽

High Concentrations ◽

Rainwater Quality

Rainwater harvesting (RWH) is an alternative to the problem of water scarcity. However, its quality must be analyzed before its use, so that it does not represent any danger to the consumer. Thus, the objective of this paper was to analyze the spatial-temporal variation of water quality of rainwater in two cities and observe whether its parameters meet the norm related to the subject. In addition, the concentration of total suspended solids (TSS) that flow into the drainage system was also simulated. Rainwater samples were collected at several points in Congonhas and Ouro Branco - MG, over a period of two years. The results showed that there was spatial-temporal variation in water quality. There were points where the quality met the standard in some moments and did not meet in others, due to its temporal variation. It was also observed that the catchment surface influenced the quality of rainwater, so that the water that came into contact with the roof had its quality deteriorated, at first. However, throughout the rainy event, the quality improved, but at certain times, it was not enough to meet the standard. The rainwater quality simulation, carried out at SWMM, showed high concentrations of TSS, which were higher to that allowed for launching into receiving bodies.

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Performance Assessment of Domestic Wastewater Treatment Plants Operating on Different Technologies

International Journal of Engineering and Advanced Technology - Regular Issue ◽

10.35940/ijeat.c5454.029320 ◽

2020 ◽

Vol 9 (3) ◽

pp. 1649-1653

Keyword(s):

Water Quality ◽

Surface Water ◽

Municipal Wastewater ◽

Wastewater Treatment Plants ◽

Sewage Treatment ◽

Drainage System ◽

Surface Water Quality ◽

Domestic Wastewater ◽

Effluent Quality

Delhi, the most populated city in the country, is the capital of India. The huge population, urbanization and industrial processes contribute to degradation of water quality which is further aggravated by direct disposal of untreated domestic wastewater into the river Yamuna. In Delhi, the sewerage system is badly affected by improper management of the drainage system and insufficient installation of sewers in undeveloped as well as slum areas of the city which degrade the surface water quality of Yamuna River and create unhygienic conditions for the increasing population. In this study, three sewage treatment plants (STPs) have been selected which are situated at Najafgarh, Delhi Gate and Shahdara based on different technologies like Extended Aeration (EA), Biological Filtration and Oxygenated Reactor (BIOFOR) and Phytorid in order to assess the quality of wastewater before and after treatment and determining the removal efficiencies of various parameters. The study reveals that the performance of Delhi Gate and Shahdara STPs based on BIOFOR and Phytorid technologies are more efficient for the treatment of the municipal wastewater which can be further be safely disposed off into surface water and can be used for non-domestic purposes like irrigation, agriculture, cleaning of parks and streets. The effluent quality of Najafgarh STP based on EA technology is found to be less efficient as compared to the BIOFOR and Phytorid technologies. Hence, it is required to be operated and maintained properly with close supervision so as to achieve effluent quality standards as prescribed by the Indian standards

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