Economic valuation of a created wetland fed with treated wastewater located in a peri-urban park in Catalonia, Spain

2011 ◽  
Vol 63 (5) ◽  
pp. 891-898 ◽  
Author(s):  
Oscar Alfranca ◽  
Joan García ◽  
Hector Varela
Keyword(s):  
Constructed Wetlands ◽  
Economic Valuation ◽  
Economic Value ◽  
Treated Wastewater ◽  
Urban Park ◽  
Created Wetland ◽  
Positive Externalities ◽  
Small Influence ◽  
Hydraulic Infrastructure ◽  
Reuse Of Treated Wastewater

The main objective of this study was to calculate the economic value (including externalities) of a created wetland located in a peri-urban park in Catalonia, Spain. The wetland, which covers an area of 1 ha, was constructed in 2003 and receives a secondary treated wastewater flow of between 100 and 250 m3/day. The externalities of the wetland were evaluated using the travel cost method. The value of the wetland is expressed in terms of the price of the water that flows through the system, which is estimated to range from 0.71 to 0.75 €/m3. The value of positive externalities (1.25 €/m3) was greater than private costs (from 0.50 to 0.54 €/m3). These results constitute empirical evidence that created wetlands in peri-urban parks can be considered to be a source of positive externalities when used in environmental restoration projects focusing on the reuse of treated wastewater. This study also illustrates 1) the small influence of the hydraulic infrastructure depreciation costs on the private costs of constructed wetlands (less than 10%), and 2) the low investment costs of constructed wetlands in comparison with operation and maintenance costs (less than 10% of total private costs).

scholarly journals Economic Valuation of an Urban Lake Recreational Park: Case of Taman Tasik Cempaka in Bandar Baru Bangi, Malaysia

2019 ◽  
Vol 11 (11) ◽  
pp. 3023 ◽  
Author(s):  
Jamal Othman ◽  
Yaghoob Jafari
Keyword(s):  
Negative Binomial ◽  
Economic Valuation ◽  
Local Population ◽  
Economic Value ◽  
Public Support ◽  
Urban Park ◽  
Revenue Collection ◽  
Wide Range ◽  
Recreational Services ◽  
Recreational Benefits

There is growing public support for an outdoor, nature-based urban park, which offers the local population a wide range of recreational services for an improved quality of life. This study estimates the economic value of recreational benefits for the case of a lake-based urban park known as Taman Tasik Cempaka (TTC) in Bandar Baru Bangi in Selangor, Malaysia. The Travel Cost Method (TCM) was used to generate the demand function for park visitation and the recreational benefits were estimated using the Poisson and Negative Binomial (NB) models. The net benefits of recreation per visitor were evaluated at MYR 6.2 per trip while the price elasticity of demand was highly inelastic at −0.48. The result provides support for the imposition of an entrance fee and the subsequent revenue collection may be used for park upkeep and conservation.

Economic valuation of benefits and costs associated with the coordinated development and management of the Zambezi river basin

Water Policy ◽  
2011 ◽  
Vol 14 (3) ◽  
pp. 490-508 ◽  
Author(s):  
A. Tilmant ◽  
W. Kinzelbach ◽  
D. Juizo ◽  
L. Beevers ◽  
D. Senn ◽  
...  
Keyword(s):  
River Basin ◽  
Economic Valuation ◽  
Economic Value ◽  
Irrigated Agriculture ◽  
Power Stations ◽  
Advanced Planning ◽  
Hydraulic Infrastructure ◽  
Development And Management ◽  
Zambezi River Basin ◽  
Zambezi River

The Zambezi river basin is of utmost importance to its riparian countries in terms of energy, food production and natural resources. Even though there is no legal agreement on the sharing of Zambezi waters, an assessment of basin-wide economically efficient allocation policies will provide valuable information at a time where water managers and policy makers in the region are negotiating the establishment of a unified river basin institution, called the Zambezi Watercourse Commission (ZAMCOM). That institution would be responsible for, amongst other things, the design of allocation rules. In this study, basin-wide allocation policies are derived from a hydro-economic model that considers the largest existing and planned hydraulic infrastructure and irrigation schemes in the basin. Our results illustrate that the economic value of water varies spatially, driven primarily by large changes in elevation and on the locations of existing or proposed dams. This observation may have implications for future decisions about the siting of expansions in irrigated agriculture. For example, some of the planned irrigation schemes in upstream countries are not economically sound if the power stations that are in an advanced planning phase are implemented. This study also reveals that the economic value of the three largest storage infrastructure (Kariba, Itezhitezhi, Cahora Bassa) is around US$443 million/year.

Experiences with a top layer of gravel to enhance the performance of vertical flow constructed wetlands at cold temperatures

2009 ◽  
Vol 59 (6) ◽  
pp. 1111-1116 ◽  
Author(s):  
Guenter Langergraber ◽  
Alexander Pressl ◽  
Klaus Leroch ◽  
Roland Rohrhofer ◽  
Raimund Haberl
Keyword(s):  
Organic Matter ◽  
Constructed Wetlands ◽  
Common Reed ◽  
Treated Wastewater ◽  
Second Phase ◽  
Vertical Flow ◽  
Cold Temperatures ◽  
Main Layer ◽  
Gravel Layer ◽  
Filter Bed

In a first phase of this study it was shown that the Austrian effluent standards for organic matter could not be met in winter for vertical flow (VF) beds designed for and loaded with 27 g COD.m−2.d−1 (3 m2 per person equivalent). The aim of this second phase of the study was to investigate, if the performance of a constructed wetland can be enhanced, i.e. if the effluent requirements can be met, when an additional gravel layer (15 cm, 4–8 mm) is added on top of the main layer of the VF bed. The hypothesis was that this top layer would increase the thermal insulation and consequently the temperatures in the filter bed during cold periods, thus resulting in higher removal efficiencies during winter. Two VF beds were operated in parallel; one bed with such a 15 cm top layer, one without. Otherwise the construction of both beds was identical: surface area of about 20 m2, 50 cm main layer (grain size 0.06–4 mm, d10=0.2 mm; d60=0.8 mm), planted with common reed (Phragmites australis). The beds were intermittently loaded 4 times per day with mechanically pre-treated wastewater (hydraulic loading: 47 mm.d−1; median value of the influent concentration: 505 mg COD.L−1). Despite a better performance during the first winter, the bed with additional top layer showed in general a very unstable performance. It is assumed that the main reason for this was that the oxygen transfer was reduced by the additional top layer so far that suspended organic matter could not any longer be degraded in between loadings. Therefore clogging of the filter occurred.

scholarly journals Projecting Basin-Scale Distributed Irrigation and Domestic Water Demands and Values: A Generic Method for Large-Scale Modeling

2016 ◽  
Vol 02 (04) ◽  
pp. 1650023 ◽  
Author(s):  
Noémie Neverre ◽  
Patrice Dumas
Keyword(s):  
Irrigation Water ◽  
Large Scale ◽  
Potential Evapotranspiration ◽  
Demand Curve ◽  
Economic Valuation ◽  
Economic Value ◽  
Expansion Method ◽  
Domestic Water ◽  
Water Demands ◽  
Basin Scale

This paper presents a methodology to project irrigation and domestic water demands on a regional to global scale, in terms of both quantity and economic value. Projections are distributed at the water basin scale. Irrigation water demand is projected under climate change. It is simply computed as the difference between crop potential evapotranspiration for the different stages of the growing season and available precipitation. Irrigation water economic value is based on a yield comparison approach between rainfed and irrigated crops using average yields. For the domestic sector, we project the combined effects of demographic growth, economic development and water cost evolution on future demands. The method consists in building three-part inverse demand functions in which volume limits of the blocks evolve with the level of GDP per capita. The value of water along the demand curve is determined from price-elasticity, price and demand data from the literature, using the point-expansion method, and from water cost data. This generic methodology can be easily applied to large-scale regions, in particular developing regions where reliable data are scarce. As an illustration, it is applied to Algeria, at the 2050 horizon, for demands associated to reservoirs. Our results show that domestic demand is projected to become a major water consumption sector. The methodology is meant to be integrated into large-scale hydroeconomic models, to determine inter-sectorial and inter-temporal water allocation based on economic valuation.

scholarly journals VALUASI EKONOMI DAN ANALISIS KESESUAIAN WISATA DI PANTAI SIGANDU DESA KLIDANG LOR KABUPATEN BATANG Economic Valuation and Tourism Suitability Analysis in Sigandu Beach, Klidang Lor Village, Batang Regency

2019 ◽  
Vol 8 (3) ◽  
pp. 147-154
Author(s):  
Diah Hanifah ◽  
Anhar Solichin ◽  
Churun Ain
Keyword(s):  
Economic Valuation ◽  
Economic Value ◽  
Travel Cost ◽  
Primary Data ◽  
Travel Cost Method ◽  
Limiting Factor ◽  
Suitability Analysis ◽  
Suitability Index ◽  
Index Value ◽  
Age Range

 ABSTRAK Pantai Sigandu merupakan objek wisata alam yang sangat potensial. Keberadaan Pantai Sigandu mampu membantu perekonomian daerah Kabupaten Batang. Mengingat pentingnya keberadaan objek wisata tersebut maka diperlukan suatu kajian yang mampu mengestimasi besarnya nilai ekonomi dari kegiatan wisata di Pantai Sigandu, serta menganalisa kesesuaian wisata pantai untuk rekreasi agar dapat digunakan dalam pengembangan dan pengelolaan objek wisata tersebut. Penelitian ini dilaksanakan pada bulan Desember 2018 - Januari 2019 dengan bertujuan untuk mengetahui profil dan tipologi wisatawan; menghitung nilai ekonomi pariwisata berdasarkan Travel Cost Method (TCM); dan menganalisa kesesuaian wisata berdasarkan Indeks Kesesuaian Wisata (IKW). Penelitian ini bersifat kuantitatif, dengan metode pengambilan data primer menggunakan teknik wawancara terhadap 100 wisatawan, dengan bantuan kuisioner serta melakukan sampling lapangan untuk analisis kesesuaian wisata. Hasil penelitian menunjukkan bahwa karakteristik wisatawan memiliki kisaran usia 20-40 tahun dengan tingkat pendidikan SMA/SMK. Nilai ekonomi yang diperoleh berdasarkan metode biaya perjalanan atau TCM di Pantai Sigandu yaitu sebesar Rp. 31.038.289.140,00 per tahun dengan biaya rata-rata sebesar Rp. 120.140,00 per individu. Nilai Indeks Kesesuaian Wisata (IKW) Pantai Sigandu termasuk dalam kategori sangat sesuai (S1) yaitu tidak memiliki faktor pembatas dalam suatu penggunaan tertentu secara lestari, atau hanya memiliki pembatas yang kurang berarti dan tidak berpengaruh secara nyata. ABSTRACT Sigandu Beach is a potential natural tourism object. The existence of Sigandu Beach is able to increase the economy of the Batang Regency. The existence of a tourism object is important, so it is needed a study to estimate the tourism economic value of Pantai Sigandu, as well as to analyze the suitability of coastal tourism for recreation so that it can be used in development and management of this tourism object. This study was conducted in December 2018 - January 2019. It aims to find out the profile and typology of tourists; to calculate the economic value of tourism based on Travel Cost Method (TCM); and to analyze tourist suitability based on the Tourism Suitability Index. This study is a quantitative with a primary data method use a interview technique for 100 tourist with the help of questionnaires and do measures of the field for Tourism Suitability Analysis. Results of the study show that characteristics of tourist respondents have an age range of 20-40 years old with high school/ vocational education level. The economic value was obtained based on TCM in the Sigandu Beach, which is Rp. 31,038,289,140.00 per year with an average cost of Rp. 120,140.00 per individual. The Tourism Suitability Index value in the Sigandu Beach is included in the very appropriate category (S1), it does not have a limiting factor in a particular use sustainably, or it only has a less significant limitation and does not have a significant effect.

scholarly journals Reúso de Efluentes Tratados para Fins de Operação de Torres de Resfriamento / Reuse of Treated Wastewater for Cooling Tower Purposes

2020 ◽  
Vol 4 (4) ◽  
pp. 2568-2577
Author(s):  
Daniela Moraes da Costa ◽  
Jhully Laiane Souza da Silva ◽  
Monique Sandra Oliveira Dias Barreto ◽  
Gilberto Caldeira Barreto
Keyword(s):  
Cooling Tower ◽  
Treated Wastewater ◽  
Reuse Of Treated Wastewater

scholarly journals VALUASI EKONOMI OBJEK WISATA PANTAI WEDIOMBO KABUPATEN GUNUNGKIDUL YOGYAKARTA DENGAN PENDEKATAN TRAVEL COST Economic Valuation of Tourism Destination of Wediombo Beach Gunungkidul Regency Yogyakarta with Travel Cost Approach

2019 ◽  
Vol 8 (3) ◽  
pp. 203-210
Author(s):  
Theresia Panjaitan ◽  
Suradi Wijaya Saputra ◽  
Siti Rudiyanti
Keyword(s):  
Aquatic Ecosystems ◽  
Economic Valuation ◽  
Economic Value ◽  
Travel Cost ◽  
Travel Cost Method ◽  
Tourism Destination ◽  
Tourist Destination ◽  
Method Approach ◽  
Cost Economic ◽  
Average Individual

ABSTRAKPantai Wediombo terletak di  Desa Jepitu, Kecamatan Girisubo, Kabupaten Gunungkidul. Pantai Wediombo merupakan salah satu ekosistem perairan yang memiliki daya tarik untuk dapat dijadikan objek wisata. Manfaat yang diberikan oleh pantai Wediombo belum terukur secara ekonomi sehingga penting untuk dilakukan studi tentang besarnya nilai ekonomi kawasan wisata. Tujuan dari penelitian ini yaitu untuk mengetahui potensi dan nilai ekonomi Pantai Wediombso. Penelitian dilaksanakan pada bulan Maret 2019 di Pantai Wediombo. Penelitian menggunakan metode deskriptif. Pengumpulan data diperoleh melalui wawancara kepada 100 wisatawan dan 1 pengelola wisata menggunakan kuisioner dengan teknik sampling accidental sampling. Analisis valuasi ekonomi wisata menggunakan pendekatan Travel Cost Method. Potensi yang dimiliki oleh Pantai Wediombo mencakup keindahan dan kondisi daya tarik pantai termasuk dalam  kategori sangat baik, sarana dan prasarana yang sudah memadai, pelayanan pengelola yang cukup baik serta potensi budaya masyarakat seperti Upacara Ngalangi. Nilai ekonomi Pantai Wediombo sebesar Rp.52.787.622.096,00/tahun dengan rata-rata biaya perjalanan individu sebesar Rp. 208.296,00/kunjungan. ABSTRACTWediombo Beach located in Jepitu Village, Girisubo District, Gunungkidul Regency. Wediombo Beach is one of the aquatic ecosystems which has attraction that can be a good tourist destination. The benefits from Wediombo Beach were not yet measure in economic terms and it is important to study the magnitude of the economic value of tourist areas. The purpose of this research is to find out the potential and economic value of the beach. The research held on March at Wediombo Beach. The study used descriptive methods. Data obtained through interviews with 100 tourists and 1 tourism manager using questionnaires with accidental sampling. Analysis of tourism economic valuation using Travel Cost Method approach. The potential of Wediombo Beach including the beauty and conditions of coastal appeal is in a very good category, adequate facilities and infrastructure, good management services and potential cultural communities such as the Ngalangi ceremony. The economic value of Wediombo Beach based on tourist travel cost is about Rp.52.787.622.096.00 / year and average individual travel cost about Rp.208.296 / visit.

Economic Valuation of “Parak” Traditional Agroforestry West Sumatera (Case Study in Nagari Paninggahan, Solok Regency)

2021 ◽  
Vol 3 (3) ◽  
pp. 34-42
Author(s):  
Helmayuni ◽  
Mardianto
Keyword(s):  
Economic Valuation ◽  
Economic Value ◽  
Soil Layer ◽  
Secondary Data ◽  
Research Area ◽  
Primary Data ◽  
Domestic Water ◽  
Traditional Agroforestry ◽  
Direct Use

This study aims to determine the economic value, which is a direct and indirect benefit (tangible and intangible) of Parak in the research area. This research used a case study method, and the sampling was carried out in a purposive manner consisting of 50 sample farmers. The data used in this study are primary data and secondary data. Preliminary data were obtained by direct interviews with respondents based on the questionnaire provided, while secondary data were taken from agencies related to this research. The processing of data obtained in the field shows that Parak plays an important role in supporting the economy of farmers in Nagari Paninggahan either directly or indirectly. The direct use value obtained from the plant is IDR. 46,753,650 (66,316 per cent), from firewood of IDR. 23,070,000 (32,722 percent) and from livestock IDR. 678,550 (0.963 per cent) so that the total direct use income is IDR. 70,502,200 per year of all commodities cultivated by the sample farmers. Meanwhile, for indirect use, such as household/domestic water use, IDR. 13,312,320/year and agricultural irrigation water IDR. 54,052,111/year. The total indirect usage is IDR. 67,364,431,-. Per year. Agroforestry patterns can cover the soil layer well and have an effective influence on soil erosion control to increase the supply of water in the soil. Respondents have also carried out other conservation activities by constructing bench terraces, terracing systems, and other buildings to suppress sedimentation and erosion.

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