Environmental impact of fluidized solidified silt casting on surrounding water bodies

2019 ◽  
Vol 38 (5) ◽  
pp. 604-610 ◽  
Author(s):  
Yunquan Li ◽  
Wei Zhu ◽  
Silin Wu ◽  
Shi Shu ◽  
Yiyan Lv ◽  
...  
Keyword(s):  
Environmental Impact ◽  
Water Bodies ◽  
Surrounding Water

scholarly journals Preliminary dragonfly (Odonata) species list from the Pampa biome in Rio Grande do Sul, Brazil, with ecological notes for 19 new records for the State

2017 ◽  
Vol 17 (4) ◽  
Author(s):  
Samuel Renner ◽  
Eduardo Périco ◽  
Gerson Júnior Ely ◽  
Göran Sahlén
Keyword(s):  
Rio Grande ◽  
The State ◽  
Water Bodies ◽  
Rio Grande Do Sul ◽  
Species List ◽  
Surrounding Water ◽  
Pampa Biome ◽  
Small Streams ◽  
Biogeographical Region ◽  
Southern Half

Abstract An inventory of Odonata was carried out in the southern half of the state of Rio Grande do Sul, Brazil, in the Pampa biome. Originally, this biogeographical region was covered mostly by open fields and grassland, with sections of higher vegetation surrounding water bodies and rocky hills. Today the landscape is fragmented due to agricultural activities, mainly cattle farming, rice crops and forest plantations. Our survey was conducted in three municipalities from this region, between March 2015 and April 2016. Aiming at a general overview of the species composition, our sampling sites were selected on a wide basis, including lakes, bogs, temporary water bodies, small streams and river sections. Eighty two species of Odonata were collected comprising 40 genera and seven families. The dominant families were Libellulidae (56,1%), Coenagrionidae (24,5%) and Aeshnidae (7,3%). We found a diverse odonate assemblage, adding 19 new species records for the state of Rio Grande do Sul.

scholarly journals Characterization of brewery wastewater composition

2015 ◽  
Vol 9 (9) ◽  
pp. 1073-1076
Author(s):  
Abimbola Motunrayo Enitan ◽  
◽  
Josiah Adeyemo ◽  
Sheena K. Kumari ◽  
Feroz Mahomed Swalaha ◽  
...  
Keyword(s):  
Suspended Solids ◽  
Treatment Plant ◽  
Oxygen Demand ◽  
Organic Content ◽  
Water Bodies ◽  
Brewery Wastewater ◽  
Surrounding Water ◽  
Peak Period ◽  
Physicochemical Composition ◽  
Negative Effect

Industries produce millions of cubic meters of effluent every year and the wastewater produced may be released into the surrounding water bodies, treated on-site or at municipal treatment plants. The determination of organic matter in the wastewater generated is very important to avoid any negative effect on the aquatic ecosystem. The scope of the present work is to assess the physicochemical composition of the wastewater produced from one of the brewery industry in South Africa. This is to estimate the environmental impact of its discharge into the receiving water bodies or the municipal treatment plant. The parameters monitored for the quantitative analysis of brewery wastewater include biological oxygen demand (BOD5), chemical oxygen demand (COD), total suspended solids, volatile suspended solids, ammonia, total oxidized nitrogen, nitrate, nitrite, phosphorus and alkalinity content. In average, the COD concentration of the brewery effluent was 5340.97 mg/l with average pH values of 4.0 to 6.7. The BOD5 and the solids content of the wastewater from the brewery industry were high. This means that the effluent is very rich in organic content and its discharge into the water bodies or the municipal treatment plant could cause environmental pollution or damage the treatment plant. In addition, there were variations in the wastewater composition throughout the monitoring period. This might be as a result of different activities that take place during the production process, as well as the effects of peak period of beer production on the water usage.

scholarly journals Economic impact of aquaculture in floodplains - a case study of Sonmar Chaur in Bihar, India

2016 ◽  
Vol 63 (3) ◽  
Author(s):  
Raushan Kumar ◽  
Nalini Ranjan Kumar ◽  
P. K. Katiha ◽  
M. Krishnan ◽  
Satya Prakash ◽  
...  
Keyword(s):  
Environmental Impact ◽  
Impact Assessment ◽  
Shallow Water ◽  
Marketing Channels ◽  
Water Bodies ◽  
Fish Production ◽  
Small Holders ◽  
Employment Generation ◽  
Limited Scope

Chaurs are shallow water logged areas and have limited scope for agriculture, but can be better utilised for agriculture cum fish production. About 70% (28.34 ha) area of Sonmar chaur in Bihar has been converted into small ponds for aquaculture purposes. Income and employment generated from the chaur from both agriculture and fisheries and fish disposal pattern were studied. The study revealed aquaculture as most profitable enterprise `3,28,000 ha-1) with BC ratio 1.46 followed by agriculture (`37,900 ha-1) and culture based fisheries (`34,400 ha-1) with B-C ratio 2.1 and 2.6, respectively. Maximum employment was generated from aquaculture (1411 man days ha-1) followed by culture based fisheries (70 man days ha-1) and agriculture (35 man days ha-1). The higher employment generation in culture fisheries was mainly due to requirement for watch and ward. The fish was sold either directly to the ultimate consumers or through the vendors. Among the two marketing channels operatings Channel-I in which producer sells directly to consumers was found more efficient (69.7). Though, aquaculture was more profitable and generated higher employment, it requires much higher resources for its practice which may hinder small holders to adopt such practice and also it may impact certain indirect uses of these water bodies. Environmental impact assessment and support to small farmers are needed to utilise such water bodies through aquaculture.

scholarly journals The Environmental Impact of Etelebou Flow Station In Surface Water of Gbarain, Bayelsa State, Nigeria

2018 ◽  
Vol 1 (2) ◽  
pp. 16-22
Author(s):  
Enetimi I. Seiyaboh ◽  
Tariwari C.N Angaye
Keyword(s):  
Surface Water ◽  
Environmental Impact ◽  
Elemental Analysis ◽  
Water Samples ◽  
Physicochemical Parameters ◽  
Anthropogenic Activities ◽  
Water Bodies ◽  
Diagnostic Data ◽  
Frequent Monitoring ◽  
Industrial Sources

Environmental impact of anthropogenic activities from industrial sources, have become a threat to biodiversity. Water samples were collected from rivers around the flow station, and analysed from some physicochemical parameters and hydrocarbon contents. Result of the physicochemistry was reported for: pH (6.58± 0.04 - 6.76±0.01), conductivity (168.30±13.98 - 194.57±3.78 µS/cm), conductivity 8.29±0.04 - 10.66±0.02 NTU, salinity (0.07±0.00 - 0.09± 0.00 mg/l), and Total Solids (83.96±1.49 - 103.66±0.60mg/l). Other elemental analysis includes: sulphates (2.43±0.01 - 4.28 ±0.02 mg/l), nitrates (0.19±0.01 - 0.28±0.01 mg/l), carbonates (1.14±0.07 - 2.06±0.07 mg/l), calcium (8.45±0.10 - 11.70±0.25 mg/l), magnesium (1.14±0.07 - 2.56±0.03 mg/l), and sodium (4.37±0.15 - 5.62±0.03 mg/l). The values of THC and TPH were 0.92±0.08 - 1.51±0.03, and 0.37±0.13 - 0.76±0.07 mg/l respectively. Generally, the result indicated mild level of contamination in terms of Hydrocarbon contents. However, diagnostic data emerging for physicochemistry and some elemental property indicates the water is unfit for consumption. Notwithstanding, the order on contamination were reported as; downstream > midstream > upstream. Therefore this study concludes that there should be frequent monitoring of the recipient water bodies associated with the flow station in order to check anthropogenic activities, and conserve biodiversity.

scholarly journals Biochar as an Eco-Friendly and Economical Adsorbent for the Removal of Colorants (Dyes) from Aqueous Environment: A Review

Water ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 3561
Author(s):  
Prithvi Srivatsav ◽  
Bhaskar Sriharsha Bhargav ◽  
Vignesh Shanmugasundaram ◽  
Jayaseelan Arun ◽  
Kannappan Panchamoorthy Gopinath ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Plant Biomass ◽  
Low Cost ◽  
Aquatic Organisms ◽  
Hydrothermal Carbonization ◽  
Industrial Applications ◽  
Water Bodies ◽  
Aqueous Environment ◽  
Surrounding Water ◽  
Treatment Technologies

Dyes (colorants) are used in many industrial applications, and effluents of several industries contain toxic dyes. Dyes exhibit toxicity to humans, aquatic organisms, and the environment. Therefore, dyes containing wastewater must be properly treated before discharging to the surrounding water bodies. Among several water treatment technologies, adsorption is the most preferred technique to sequester dyes from water bodies. Many studies have reported the removal of dyes from wastewater using biochar produced from different biomass, e.g., algae and plant biomass, forest, and domestic residues, animal waste, sewage sludge, etc. The aim of this review is to provide an overview of the application of biochar as an eco-friendly and economical adsorbent to remove toxic colorants (dyes) from the aqueous environment. This review highlights the routes of biochar production, such as hydrothermal carbonization, pyrolysis, and hydrothermal liquefaction. Biochar as an adsorbent possesses numerous advantages, such as being eco-friendly, low-cost, and easy to use; various precursors are available in abundance to be converted into biochar, it also has recyclability potential and higher adsorption capacity than other conventional adsorbents. From the literature review, it is clear that biochar is a vital candidate for removal of dyes from wastewater with adsorption capacity of above 80%.

Characterization and Management Concerns of Water Resources around Pallikaranai Marsh, South Chennai

2017 ◽  
pp. 102-121 ◽  
Author(s):  
Avantika Bhaskar ◽  
G. Babu Rao ◽  
Jayshree Vencatesan
Keyword(s):  
Climate Change ◽  
Surface Water ◽  
Water Shortage ◽  
Water Bodies ◽  
Water Extraction ◽  
Water Crisis ◽  
Surrounding Water ◽  
Groundwater Levels ◽  
Natural Wetlands ◽  
The Government

Pallikaranai is one of the last remaining natural wetlands of Chennai. This marsh collects floodwater and increases groundwater levels in the region. The present study characterizes the water sources available around Pallikaranai Marsh. Groundwater was found to be the main source of water in the study area, extracted through domestic wells as well as commercially through a large number of agricultural wells. Direct surface water extraction from wetlands by private tankers was also observed in some areas. Acute water shortage and inefficient water supply by the government has led to thriving of tanker market in this area. Shrinking of the marsh and surrounding water bodies owing to construction, dumping of waste and encroachment accompanied by over-extraction of groundwater is driving this area towards extreme water crisis especially in event of climate change. Conservation of wetlands and evolving norms for sustainable water extraction of groundwater especially by commercial entities is recommended.

scholarly journals Assessment of Hexavalent Chromium Pollution in Buriganga and Dhaleshwari River Waterbodies Adjacent to Tannery Estates in Bangladesh

2020 ◽  
Vol 8 ◽  
pp. 11-15 ◽  
Author(s):  
Hafizur Rahman ◽  
Nabila Hoque ◽  
Palash Kumar Sarker ◽  
Ashrafus Safa
Keyword(s):  
River Water ◽  
Hexavalent Chromium ◽  
Environmental Protection Agency ◽  
Water Bodies ◽  
Effluent Treatment ◽  
Tannery Effluents ◽  
Surrounding Water ◽  
Chemical Contaminants ◽  
Leather Processing ◽  
Result Analysis

Recently, in Bangladesh, all tannery industries have been relocated to a new location exclusively established for leather processing industries with modern manufacturing facilities and effluent treatment plants with standard probations. Effluents generated from the tannery industries are now being disposed of into the surrounding river water bodies. In this study, our goal was to investigate the presence of chemical contaminants like hexavalent chromium (Cr6+) in the water bodies surrounding tannery industries and to understand the possible role played by the tannery effluents in contaminating the river water bodies with Cr6+. Result analysis revealed the presence of an amount of Cr6+ (ranging from 0.01 mg/L to 3.54 mg/L) in the surrounding water bodies, which was far above the maximum permissible limit of Cr6+ (0.05 mg/L for surface water), set by the Environmental Protection Agency. It is, therefore, plausible to assume that effluents from the tanneries play an important role in hexavalent chromium contamination of water bodies surrounding tannery industries.

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