scholarly journals Ecological Guidelines and Recommendations for Mula-Mutha Riverfront Development

2021 ◽  
Vol 32-33 (1) ◽  
Author(s):  
Swati Gole ◽  
Revati Gindi ◽  
Dhruwang Hingmire ◽  
Gurudas Nulkar
Keyword(s):  
Fresh Water ◽  
Water Flow ◽  
Base Flow ◽  
Main Stream ◽  
River Ecosystem ◽  
Water Addition ◽  
Biodiversity Indicators ◽  
Human Interventions ◽  
Guidelines And Recommendations ◽  
Riverfront Development

This paper is a case of urban river Mutha for ecological management.Over the past few decades, condition of river Mutha has deteriorated considerably. The present situation shows less of fresh water flow and lot of sewage water addition,waste dumping and foul smelling water flow. The fresh water contribution by base flow to the main stream is very negligible. The only source of fresh water is sporadic water release from Khadakwasala dam. It is irregular and in small proportion to support ecosystem functioning of the river Mutha.There is a of public debate regarding improvement in the river's condition and to correct its root cause. The disruption in the river's ecosystem is basically by human interventions. The study appeals for interdisciplinary approach with a view of environmental governance and management to solve river related problems. The focus of this study is to assess environmental impact when the river related projects being planned by Municipal authorities. The study included survey of physical changes by human interventions, in the river Mutha channel ,banks and modification of habitats hampering aquatic as well as land biodiversity. The study indicated crucial biodiversity indicators for the health of the river ecosystem. By giving grades based on both the physical conditions and biodiversity of various stretches of the river plan to improve conditions is suggested.The study created guidelines for restoration and management of Mutha river ecosystem, which may be useful for rivers especially in the urban area. This paper is based on the research project .Ecological Guidelines and Recommendations for Mula-Mutha Riverfront Development. conducted by Ecological Society.

scholarly journals Field Studies and 3D Modelling of Morphodynamics in a Meandering River Reach Dominated by Tides and Suspended Load

Fluids ◽  
2019 ◽  
Vol 4 (1) ◽  
pp. 15 ◽  
Author(s):  
Qiancheng Xie ◽  
James Yang ◽  
T. Lundström
Keyword(s):  
Fresh Water ◽  
Water Flow ◽  
Flow Direction ◽  
Tidal Flow ◽  
Field Measurements ◽  
Sediment Concentration ◽  
Suspended Load ◽  
Suspended Sediment Transport ◽  
Main Stream ◽  
Cross Sectional

Meandering is a common feature in natural alluvial streams. This study deals with alluvial behaviors of a meander reach subjected to both fresh-water flow and strong tides from the coast. Field measurements are carried out to obtain flow and sediment data. Approximately 95% of the sediment in the river is suspended load of silt and clay. The results indicate that, due to the tidal currents, the flow velocity and sediment concentration are always out of phase with each other. The cross-sectional asymmetry and bi-directional flow result in higher sediment concentration along inner banks than along outer banks of the main stream. For a given location, the near-bed concentration is 2−5 times the surface value. Based on Froude number, a sediment carrying capacity formula is derived for the flood and ebb tides. The tidal flow stirs the sediment and modifies its concentration and transport. A 3D hydrodynamic model of flow and suspended sediment transport is established to compute the flow patterns and morphology changes. Cross-sectional currents, bed shear stress and erosion-deposition patterns are discussed. The flow in cross-section exhibits significant stratification and even an opposite flow direction during the tidal rise and fall; the vertical velocity profile deviates from the logarithmic distribution. During the flow reversal between flood and ebb tides, sediment deposits, which is affected by slack-water durations. The bed deformation is dependent on the meander asymmetry and the interaction between the fresh water flow and tides. The flood tides are attributable to the deposition, while the ebb tides, together with run-offs, lead to slight erosion. The flood tides play a key role in the morphodynamic changes of the meander reach.

DESALINASI AIR PAYAU MENGGUNAKAN ENERGI SOLAR DENGAN PARABOLIC TROUGH

2014 ◽  
Vol 14 (1) ◽  
pp. 55-64
Author(s):  
Titis Rosari ◽  
Wahyono Hadi ◽  
Ali Masduqi
Keyword(s):  
Renewable Energy ◽  
Fresh Water ◽  
Water Flow ◽  
Continuous Flow ◽  
Water Yield ◽  
Production Volume ◽  
Raw Water ◽  
Solar Still ◽  
Parabolic Trough ◽  
Depth Water

Solar still atap kaca merupakan salah satu inovasi renewable energy untuk proses desalinasi. Penambahan reflektor parabolic trough berfungsi untuk meningkatkan suhu dalam sistem. Tujuan penelitian ini adalah menganalisa volume air tawar yang dihasilkan dengan parabolic trough, memisahkan DHL dan TDS dari air olahan, menentukan tinggi air optimum, dan efek warna pada basin. Penelitian menggunakan aliran semi kontinu dengan pengaturan aliran air menggunakan pelampung air. Air baku yang digunakan berasal dari sumur warga Kejawan Putih. Penggunaan parabolic trough pada sistem desalinasi dapat meningkatkan volume produksi hingga 66% dibandingkan tanpa menggunakan parabolic trough. Efisiensi destilasi ekperimen mencapai 18,12%.  Volume yang dihasilkan sebesar 2,494 L/m2 dalam satu hari dengan laju destilasi 0,312 L/m2. Kemampuan penyisihan TDS dan DHL sebesar 99,9%. Pada eksperimen ini variabel warna bak dan ketinggian air tidak berpengaruh signifikan terhadap hasil kondensat. Solar still is one of the inovations of renewable energy for desalination process. The function of using parabolic trough reflector is to increase temperature on the system. The purposes of this study was to analyze fresh water yield by using of parabolic trough, removing DHL and TDS from brackish water’s samples, and effect of color on the basin. This research using semi-continuous flow with water flow setting by water buoy. Raw water used was came from wells at Kejawan Putih subdistrict.. The using of the parabolic trough desalination system can increase production volume by 66% when compared without parabolic trough. Experimental distillation efficiency reached 18.12%. Condensate yield has been found to be 2,494 L/m2 in one day and distillation rate of 0.312 L/m2.  These process can allowance 99.9% of the TDS and DHL. In this experiment the variable of basin color and depth water did not significantly influence to condensate yield.

0711 Effects of fresh water flow rate on the performance of hollow fiber membrane module

2014 ◽  
Vol 2014 (0) ◽  
pp. _0711-1_-_0711-4_
Author(s):  
Shingo TERASHIMA ◽  
Hidechito HAYASHI ◽  
Tetsuya OKUMURA ◽  
Kei MATSUYAMA ◽  
Morihiro IRIE ◽  
...  
Keyword(s):  
Fresh Water ◽  
Water Flow ◽  
Flow Rate ◽  
Hollow Fiber ◽  
Hollow Fiber Membrane ◽  
Water Flow Rate ◽  
Membrane Module ◽  
Fiber Membrane

scholarly journals Effect of Seawater/Fresh Water Flow Rates on Power Density of Reverse Electrodialysis

2014 ◽  
Vol 36 (9) ◽  
pp. 624-628
Author(s):  
Jong-Chan Na ◽  
Han-Ki Kim ◽  
Chan-Soo Kim ◽  
Moon-Hee Han
Keyword(s):  
Power Density ◽  
Fresh Water ◽  
Water Flow ◽  
Flow Rates ◽  
Reverse Electrodialysis

Subglacial water flow inferred from stream measurements at South Cascade Glacier, Washington, U.S.A.

1992 ◽  
Vol 38 (128) ◽  
pp. 51-64 ◽  
Author(s):  
Andrew G. Fountain
Keyword(s):  
Flow System ◽  
Water Discharge ◽  
Drainage System ◽  
Base Flow ◽  
Main Stream ◽  
Drainage Basins ◽  
Glacier Surface ◽  
One Dimensional ◽  
Flow Through ◽  
Artificial Tracers

AbstractThe subglacial drainage system of South Cascade Glacier is inferred by examining how discharges of water, solutes and artificial tracers in streams draining the glacier respond to meltwater and precipitation on the glacier surface. Results indicate that the glacier is divided into three (two large and one small) drainage basins, each drained by a single stream. The positions of drainage divides on the glacier surface do not always lie directly over those at the base of the glacier. Comparisons of water discharge and cation load in each of the two main streams indicate that subglacial hydraulic processes differ between drainage basins. One stream drains from a conduit that is isolated in its lower reach from the surrounding subglacial region and receives water routed englacially from the surface. The upper reach of the conduit also receives water routed englacially from the surface as well as from a distributed subglacial flow system. The other main stream drains from a conduit coupled to a debris layer beneath the glacier. Observations of the layer in natural ice tunnels indicate that the water may flow within a thin layer of debris. A one-dimensional model of flow through the debris layer can explain both the base-flow and diurnal variations of the second main stream.

Turbidity Mitigation in an Oil Sands Pit Lake through pH Reduction and Fresh Water Addition

2018 ◽  
Vol 144 (12) ◽  
pp. 04018127
Author(s):  
Ho Yin Poon ◽  
Jordan T. Brandon ◽  
Xiaoxuan Yu ◽  
Ania C. Ulrich
Keyword(s):  
Fresh Water ◽  
Oil Sands ◽  
Pit Lake ◽  
Water Addition ◽  
Ph Reduction

scholarly journals Subglacial water flow inferred from stream measurements at South Cascade Glacier, Washington, U.S.A.

1992 ◽  
Vol 38 (128) ◽  
pp. 51-64 ◽  
Author(s):  
Andrew G. Fountain
Keyword(s):  
Flow System ◽  
Water Discharge ◽  
Drainage System ◽  
Base Flow ◽  
Main Stream ◽  
Drainage Basins ◽  
Glacier Surface ◽  
One Dimensional ◽  
Flow Through ◽  
Artificial Tracers

Abstract The subglacial drainage system of South Cascade Glacier is inferred by examining how discharges of water, solutes and artificial tracers in streams draining the glacier respond to meltwater and precipitation on the glacier surface. Results indicate that the glacier is divided into three (two large and one small) drainage basins, each drained by a single stream. The positions of drainage divides on the glacier surface do not always lie directly over those at the base of the glacier. Comparisons of water discharge and cation load in each of the two main streams indicate that subglacial hydraulic processes differ between drainage basins. One stream drains from a conduit that is isolated in its lower reach from the surrounding subglacial region and receives water routed englacially from the surface. The upper reach of the conduit also receives water routed englacially from the surface as well as from a distributed subglacial flow system. The other main stream drains from a conduit coupled to a debris layer beneath the glacier. Observations of the layer in natural ice tunnels indicate that the water may flow within a thin layer of debris. A one-dimensional model of flow through the debris layer can explain both the base-flow and diurnal variations of the second main stream.

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