Purification Treatment on Polluted River via Combinations of Gravel Contact Oxidation Treatment and Surface Flow Constructed Wetlands-A Case Study in Changhua County, Taiwan

Polluted river is a primary problem occurred in Changhua County, Taiwan because of rapid and massive developments of agriculture and industry. Water sample belongs to the water exhausted from influent of Yangzi-Cuo river, ci-tong jiao, Changhua County, and ecology technologies, which combined with gravel contact oxidation and surface flow constructed wetlands, are employed to enhance the water quality. Ecology technology is a useful and ordinary process which focuses on original treatment of pollution through chemical, physical, and biological procedures based on the mediums of soil, plant, water, and microorganism from pure environment. Moreover, this study aims on minimizing river pollution index (RPI) of Yangzi-Cuo river by using combinations of gravel contact oxidation and surface flow constructed wetlands. The inflow volume of water sample in suit is measured as 1,534-2,261 cubic meters per day (CMD). The major pollution in water sample involves of suspended solid (SS), ammoniacal nitrogen (NH3-N), total phosphorus (TP), total nitrogen (TN), and biochemical oxygen demand (BOD), and the values of above indexes is ranged as 10.0-26.7 mg/L, 0.9-14.0 mg/L, 1.2-14.1 mg/L, 11.1-18.2 mg/L, and 0.5-3.6 mg/L, respectively. Efficiencies of pollution elimination on SS, NH3-N, TP, TN, and BOD were depicted as 24.2-93.1%, 58.3-86.2%, 5.2-85.0%, 59.4-77.2%, and 46.3-76.4%, correspondingly, after purification treatment of ecology technology. As the result, ecology technology is benefit for the purification treatment of polluted river.

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Purification Treatment on Polluted River via Combinations of Gravel Contact Oxidation Treatment and Surface Flow Constructed Wetlands—A Case Study in Changhua County, Taiwan

10.20944/preprints201810.0479.v2 ◽

2018 ◽

Author(s):

Chen-Chiang Chou ◽

Wei-Ting Chen ◽

Yung-Pin Tsai

Keyword(s):

Constructed Wetlands ◽

Oxygen Demand ◽

Pollution Index ◽

River Pollution ◽

Suspended Solid ◽

Surface Flow ◽

Polluted Rivers ◽

Contact Oxidation ◽

Surface Flow Constructed Wetlands

Polluted rivers are a primary problem in Changhua County, Taiwan, due to rapid and massive developments in agriculture and industry. In this study, samples consisted of water influent from the Yangzi-Cuo River, Ci-Tong Jiao, Changhua County. Ecology technology, a combination of gravel contact oxidation and surface flow constructed wetlands, was employed to enhance the water quality. Ecology technology is a useful and ordinary process that focuses on original treatment of pollution through chemical, physical, and biological procedures based on the mediums of soil, plant, water, and microorganisms from pure environments. Moreover, this study aimed to minimize the river pollution index (RPI) of the Yangzi-Cuo River by using combinations of gravel contact oxidation and surface flow constructed wetlands. The inflow volume of the water samples in situ was found to be 1534–2261 cubic meters per day (CMD). The pollution in the water sample mostly involved suspended solid (SS), ammoniacal nitrogen (NH3–N), total phosphorus (TP), total nitrogen (TN), and biochemical oxygen demand (BOD), and the values of the above indexes were found to be 10.0–26.7 mg/L, 0.9–14.0 mg/L, 1.2–14.1 mg/L, 11.1–18.2 mg/L, and 0.5–3.6 mg/L, respectively. Efficiencies of pollution elimination in SS, NH3–N, TP, TN, and BOD were found to be 24.2–93.1%, 58.3–86.2%, 5.2–85.0%, 59.4–77.2%, and 46.3–76.4%, correspondingly, after purification treatment via ecology technology. Thus, ecology technology is a valid means of purification treatment for polluted rivers.

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Health Evaluation of Wader Fish (Puntius sp.) Caught from Brantas River, Malang City, Indonesia

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/934/1/012059 ◽

2021 ◽

Vol 934 (1) ◽

pp. 012059

Author(s):

A M S Hertika ◽

D Arfiati ◽

E D Lusiana ◽

R B D S Putra ◽

D R N Wasti

Keyword(s):

Water Quality ◽

Anthropogenic Activities ◽

Oxygen Demand ◽

Pollution Index ◽

Total Suspended Solid ◽

River Pollution ◽

Research Area ◽

Suspended Solid ◽

Quality Factors ◽

Hematological Profile

Abstract Anthropogenic activities along watershed area are often causing river pollution. This will affect the sustainability of aquatic resources, such as fish. One of the fish species in Brantas River that can be employed as bioindicator of water pollution is Wader fish (Puntius, sp.). The aim of this research was to analyze the health of Wader fish based on tits hematological profile. This study utilized descriptive method and conducted in three sites of Brantas River that located in Malang city, Indonesia. We took water quality parameters data to obtain Pollution Index of the river and blood samples to evaluate the hematological profile of wader fish caught in research area. Further analysis to evaluate relationship between water quality factors and hematological profile of Wader fish was performed by using Canonical Correspondence Analysis (CCA) with the support of PAST software version 4.06. The results showed that pH, temperature, dissolved oxygen (DO), ammonia and total suspended solid (TSS) of the study area were within the normal range, while the biological oxygen demand (BOD) value was above the standard. In addition, Pollution Index of this research suggested that Brantas River condition was low polluted. Meanwhile, the analysis of hematological profile of wader fish in terms of erythrocytes and hemoglobin were below than the recommended value, leukocytes were normal, and micronuclei were above the standard.

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Treatment of polluted river water using surface flow constructed wetlands in Xinyi River Floodplain, Jiangsu Province

Journal of Lake Sciences ◽

10.18307/2006.0307 ◽

2006 ◽

Vol 18 (3) ◽

pp. 238-242 ◽

Cited By ~ 2

Author(s):

WU Jianqiang ◽

◽

HUANG Shenfa ◽

RUAN Xiaohong ◽

DING Ling

Keyword(s):

River Water ◽

Constructed Wetlands ◽

Surface Flow ◽

Jiangsu Province ◽

River Floodplain ◽

Polluted River ◽

Surface Flow Constructed Wetlands

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Influent salinity affects substrate selection in surface flow constructed wetlands

10.21203/rs.3.rs-400950/v1 ◽

2021 ◽

Author(s):

Shenyan Zhou ◽

Ran Zhao ◽

Qiming Li ◽

Juan Du ◽

Chen Chen ◽

...

Keyword(s):

Constructed Wetlands ◽

High Salinity ◽

Chlorophyll Concentration ◽

Oxygen Demand ◽

Pilot Scale ◽

Surface Flow ◽

Substrate Selection ◽

Leaf Chlorophyll ◽

Rhizosphere Bacterial Community ◽

Surface Flow Constructed Wetlands

Abstract Conducted in pilot-scale surface flow constructed wetlands (SFCWs), this study’s objective is to identify the effect of influent salinity on substrate selection. Compared with gravel and sand SFCWs, soil SFCWs performed similarly to worse and similarly to better at low and high salinities, respectively, in removal efficiencies (REs) of salt, total nitrogen (TN), total phosphorous (TP) and chemical oxygen demand (COD). Soil generally increased macrophyte growth (especially at high salinity) in dry biomass, leaf chlorophyll concentration, root activity and root catalase and superoxide dismutase activities. The decrease of bacterial diversity in rhizosphere may be caused by high salinity, while soil improved rhizosphere bacterial community stability at varying salinities more than gravel or sand. At high salinity, soil support of macrophytes and rhizosphere microorganism increased pollutant REs in SFCWs or at least offset relatively poor biofilm attachment to soil. This highlights the necessity of the varying substrate selection in SFCWs with influent salinities for both increasing pollutant REs and reducing input cost.

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IDENTIFYING THE MOST SUITABLE AREAS FOR SURFACE FLOW WETLAND CONSTRUCTION IN LITHUANIA

Proceedings of the 7th International Scientific Conference Rural Development 2015 ◽

10.15544/rd.2015.060 ◽

2015 ◽

Author(s):

Antanas DUMBRAUSKAS ◽

Nijolė BASTIENĖ ◽

Petras PUNYS

Keyword(s):

Constructed Wetlands ◽

Ecological Status ◽

Surface Flow ◽

Gis Analysis ◽

Proximity Analysis ◽

Wetland Construction ◽

The Mean ◽

Two Phases ◽

Terrain Features ◽

Surface Flow Constructed Wetlands

GIS-based approach to find the suitable sites for surface flow constructed wetlands was employed for the Lithuanian river basins with low ecological status. According to the nature of the analysed criteria the flowchart consists of two phases. Criteria used include hydrographical network, soil properties, terrain features, land use, etc. Some of them have strictly defined values (constraints), and other ranges within certain limits (factors). Limited criteria were analysed using rejection principle and influencing factors using proximity analysis and overlay methods. Selecting the potential sites using standard GIS analysis tools there was estimated about 3286 sites for possible wetlands with the mean area of inflow basin about 4 km2 in the basins of water bodies at risk.

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