scholarly journals PENGARUH PEMBANGUNAN TURAP BETON TERHADAP EKOLOGI KAWASAN PERMUKIMAN DI TEPIAN SUNGAI KAPUAS PONTIANAK

2020 ◽  
Vol 7 (2) ◽  
pp. 109
Author(s):  
Jockie Zudhy Fibrianto ◽  
Muhammad Subhansyah Ikram

Untuk menjaga daratan dari abrasi salah satu rekayasa teknik adalah menggunakan turap beton. Pembangunan turap beton hampir disepanjang tepian Sungai Kapuas Pontianak, menjadi program pemerintah daerah untuk menciptakan “Pontianak Waterfront City”. Namun dalam pelaksanaannya memiliki dampak terhadap ekologi khususnya pada kawasan permukiman di tepian Sungai Kapuas, hal ini terjadi karena sistem sanitasi baik limbah cair dan padatnya langsung dialirkan ke sungai, dengan asumsi akan terbawa oleh arus pasang-surut Sungai Kapuas. Dengan adanya turap limbah tersebut tertahan di lingkungan permukiman, kondisi ini tentunya akan mempengaruhi kualitas air dan ekologi pada kawasan. Dengan menggunakan metode pengukuran kualitas air sungai yaitu TSS, TDS, DO, COD dan BOD, yang diidentifikasi dan diukur, kemudian dilanjutkan dengan analisa kawasan, melalui pendekatan dari aspek fisik, aspek biologi dan aspek kultural. Analisa kawasan dilakukan dengan membandingkan dua lokasi kawasan permukiman di tepian Sungai Kapuas yang memiliki turap dan yang tidak memiliki turap. Hasil yang didapat adalah kawasan permukiman dengan turap beton, memiliki nilai TDS yang tinggi, DO yang rendah, COD yang tinggi dan BOD yang rendah dibandingkan kawasan permukiman tanpa turap. Sehingga pembangunan turap beton pada kawasan permukiman di tepian Sungai Kapuas akan berdampak terhadap ekologi pada kawasan tersebut. THE IMPACT OF CONCRETE SHEET PILES DEVELOPMENT ON THE ECOLOGY OF SETTLEMENT AREA AT THE WATERFRONT OF PONTIANAK KAPUAS RIVERTo protect the land from abrasion, one of the engineering techniques is to use a sheet pile. The construction of concrete sheet piles along the waterfront of the Pontianak Kapuas River has become a regional government program to create the "Pontianak Waterfront City." However, in its implementation, it has an impact on ecology, especially in residential areas on the waterfront of the Kapuas River; this occurs because the sanitation system, both liquid, and solid waste, is flowed directly into the river, assuming the tides of Kapuas River will carry it. With sheet pile the waste material retained in a residential environment, this condition will undoubtedly affect the water quality and the ecology in the area. Using river water quality measurement methods, TSS, TDS, DO, COD, and BOD, identified and measured, then continued with site analysis, with approaches from physical, biological, and cultural attributes. Sites analysis is done by comparing the two settlement areas at the Kapuas River's waterfront with sheet piles and without sheet piles. The results obtained are settlement areas with concrete sheet piles, which have high TDS values, low DO, high COD, and low BOD compared to settlement areas without sheet piles. The construction of concrete sheet piles in settlement areas at the waterfront of the Kapuas River will impact the areas' ecology

2021 ◽  
Vol 918 (1) ◽  
pp. 012036
Author(s):  
M F Fadhilah ◽  
Y Hidayat ◽  
A Hadiyane

Abstract Mahogany trees (Swietenia macrophylla) are often planted in urban forests area. This shady-crowned tree has a role in controlling the quantity and quality of rainwater that falls to the ground. Mahogany trees also affect the quality of rainwater through interception, fall, and stemflow. The purpose of this research was to determine the impact of the interception process, such as throughfall and stemflow, on changes in rainwater quality of the mahogany tree. The Data that needed to be measured were tree dimension, rainfall interception, and rainwater quality. Interception measurement was performed by calculating the number of throughfall and stemflow in one month-measurement. While the measurement of rainwater quality was measured once in the laboratory. These water quality measurements include Electrical Conductivity (EC), hardness, the content of Elements Ca, Mg, Na and K, and pH concentrations. The results based on the total area of the crown showed that mahogany had an interception value of 18.088%. In the throughfall measurement, the mahogany has a throughfall of 81.799%, while the amount of the stemflow is only 0.113%. The correlation of interception values, throughfall, and stemflow with rainfall are in general positively correlated. That means the higher rainfall water will increase the number of interception, throughfall, and stemflow. The results on water quality measurement explain that Ec value in rainwater interception was increased compared to water produced from rainfall in mahogany trees. It also has the same condition in hardness measurement. In pH measurements, the interception of rainwater has less pH when compared to direct rainfall water. In addition, the content of Elements Ca, Mg, K, and Na in Stemflow and Throughfall water have more numbers than rainfall itself.


1999 ◽  
Vol 39 (5) ◽  
pp. 145-151 ◽  
Author(s):  
C. J. Pratt

Permeable surfaces for roads and footpaths have been used as a means of disposal of stormwater in developed urban areas. Such surfaces provide an alternative to impermeable concrete or tarmacadam surfaces which would otherwise produce rapid stormwater runoff, leading to possible flooding and degeneration of receiving water quality through the uncontrolled discharge of polluted urban waters. A further advantage may be obtained from such constructions by undersealing them so as to retain stormwater for re-use for non-potable uses. The potential for general introduction of this type of storage and re-use system in residential areas is discussed and possible alternative designs for the drainage infrastructure proposed. To have widespread impact such a strategy must deliver cost savings as well as reduce the impact on the water environment of anticipated water usage demands. The source of such cost savings and the general environmental benefits of such systems will be presented. The materials used in such a sealed construction and the beneficial changes to the stored water quality are outlined. Recent work has also shown that where the pavement is used for car parking any oils dropped on the surface and washed into the structure by the stormwater may also be degraded. Details will be given of a site in the UK where the above construction is to be used to provide stormwater storage for re-use in flushing toilets at a Youth Hostel.


Water ◽  
2018 ◽  
Vol 10 (3) ◽  
pp. 264 ◽  
Author(s):  
◽  
◽  
◽  

An unmanned aerial vehicle-assisted water quality measurement system (UAMS) was developed for in situ surface water quality measurement. A custom-built hexacopter was equipped with an open-source electronic sensors platform to measure the temperature, electrical conductivity (EC), dissolved oxygen (DO), and pH of water. Electronic components of the system were coated with a water-resistant film, and the hexacopter was assembled with flotation equipment. The measurements were made at thirteen sampling waypoints within a 1.1 ha agricultural pond. Measurements made by an open-source multiprobe meter (OSMM) attached to the unmanned aerial vehicle (UAV) were compared to the measurements made by a commercial multiprobe meter (CMM). Percent differences between the OSMM and CMM measurements for DO, EC, pH, and temperature were 2.1 %, 3.43 %, 3.76 %, and <1.0 %, respectively. The collected water quality data was used to interpret the spatial distribution of measurements in the pond. The UAMS successfully made semiautonomous in situ water quality measurements from predetermined waypoints. Water quality maps showed homogeneous distribution of measured constituents across the pond. The concept presented in this paper can be applied to the monitoring of water quality in larger surface waterbodies.


Author(s):  
Shashika Lokuliyana ◽  
Anuradha Jayakody ◽  
N.B.R.P. Bandara ◽  
J.W.P. Deshapriya ◽  
P.C Kavinda ◽  
...  

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