WATER POLLUTION STATUS OF SIRET RIVER IN PASCANI TOWN AREA DUE TO DIFFERENT DOMESTIC AND WASTEWATER TREATMENT ACTIVITIES (WINTER SEASON)

2017 ◽  
Vol 16 (3) ◽  
pp. 615-623
Author(s):  
Carmen Zaharia ◽  
Claudia Jufa
Keyword(s):  
Water Pollution ◽  
Wastewater Treatment ◽  
Winter Season ◽  
Pollution Status ◽  
Town Area

scholarly journals EVALUATION OF WATER POLLUTION STATUS IN BAHLUI RIVER (IASI TOWN AREA) DUE TO DOMESTIC AND URBAN WASTEWATER TREATMENT ACTIVITIES

2016 ◽  
Vol 21 (4) ◽  
Author(s):  
ZAHARIA CARMEN
Keyword(s):  
Water Pollution ◽  
Wastewater Treatment ◽  
Treatment Plant ◽  
Urban Wastewater ◽  
Aquatic Life ◽  
Pollution Status ◽  
Water Classification ◽  
Control Section ◽  
Urban Wastewater Treatment ◽  
Town Area

This study presents some data about the water pollution status of Bahlui river in Iasi town area (two control sections) mainly due to domestic and urban wastewater treatment activities, considering especially some quality indicators (i.e.<em> </em>nitrogen-based nutrients, total phosphorus and sum organics content) evaluated for 2009-2010. The Bahlui water classification by European standards in Iasi town area corresponds to ‘medium’ (WQI = 53.893 - 64.345). The real water pollution state of Bahlui river (Iasi town area) is estimated by the global pollution index (<em>I<sup>*</sup><sub>GP</sub></em>), and corresponds to values of 2.80-2.929 (Valea Lupului-Iasi control section), and 3.030-3.196 (Holboca control section, i.e. downstream of Dancu wastewater treatment plant). These values are indicating an aquatic environment modified by domestic and urban wastewater treatment activities, generating discomfort effects, or producing stress against aquatic life forms. These data are recommending application of hydro-ameliorative/remediation actions, and permanent control of Bahlui watercourse quality in all existing control sections.

scholarly journals EVALUATION OF WATER POLLUTION STATUS IN BAHLUI RIVER (IASI TOWN AREA) DUE TO DOMESTIC AND URBAN WASTEWATER TREATMENT ACTIVITIES

2015 ◽  
Vol 21 (4) ◽  
pp. 79-88
Author(s):  
CARMEN ZAHARIA
Keyword(s):  
Water Pollution ◽  
Wastewater Treatment ◽  
Treatment Plant ◽  
Urban Wastewater ◽  
Aquatic Life ◽  
Pollution Status ◽  
Water Classification ◽  
Control Section ◽  
Urban Wastewater Treatment ◽  
Town Area

This study presents some data about the water pollution status of Bahlui river in Iasi town area (two control sections) mainly due to domestic and urban wastewater treatment activities, considering especially some quality indicators (i.e. nitrogen-based nutrients, total phosphorus and sum organics content) evaluated for 2009-2010. The Bahlui water classification by European standards in Iasi town area corresponds to ‘medium’ (WQI = 53.893 - 64.345). The real water pollution state of Bahlui river (Iasi town area) is estimated by the global pollution index (I*GP), and corresponds to values of 2.80-2.929 (Valea Lupului-Iasi control section), and 3.030-3.196 (Holboca control section, i.e. downstream of Dancu wastewater treatment plant). These values are indicating an aquatic environment modified by domestic and urban wastewater treatment activities, generating discomfort effects, or producing stress against aquatic life forms. These data are recommending application of hydro-ameliorative/remediation actions, and permanent control of Bahlui watercourse quality in all existing control sections.

Water Pollution Abatement in Small Paper Mills in India

1988 ◽  
Vol 20 (1) ◽  
pp. 37-48 ◽  
Author(s):  
L. Panneerselvam
Keyword(s):  
Water Pollution ◽  
Wastewater Treatment ◽  
Raw Materials ◽  
Pollution Abatement ◽  
Pulp And Paper ◽  
Operating Costs ◽  
Small Scale ◽  
Pulp And Paper Mills ◽  
Paper Mills ◽  
Recovery System

In order to reduce the demand for the forest based raw materials by the organised industrial sectors like the large integrated pulp and paper mills, the Government of India started promoting several small-scale pulp and paper mills based on non-wood agricultural residue raw materials. However promotion of these small mills has created another environmental problem i.e. severe water pollution due to non-recovery of chemicals. Because of the typical characteristics like high silica content etc. of the black liquor produced and the subsequent high capital investment needed for a recovery system, it is not economically feasible for the small Indian mills to recover the chemicals. While the quantity of wastewater generated per tonne of paper produced by a small mill is same as from a large integrated pulp and paper mill with a chemical recovery system, their BOD load is four times higher, due to non recovery of chemicals. However the existing wastewater disposal standards are uniform for large and small mills for e.g. 30 mg BOD/l. To meet these standards, the small mills have to install a capital intensive wastewater treatment plant with heavy recurring operating costs. Therefore the feasible alternative is to implement various pollution abatement measures, with the objective of not only reducing the fibre/chemical loss but also to reduce the investment and operating costs of the final wastewater treatment system. To illustrate this approach, a case study on water pollution abatement and control in a 10 TPD mill, will be discussed.

scholarly journals MICROBIAL CONTROL OF LIVE/DEAD ZOOPLANKTON RATIO IN SEVASTOPOL BAY

2017 ◽  
Vol 11 ◽  
pp. 42-48 ◽  
Author(s):  
Vladimir S. Mukhanov ◽  
Daria Litvinyuk
Keyword(s):  
Water Pollution ◽  
Microbial Communities ◽  
Decomposition Rate ◽  
Microbial Control ◽  
Mortality Rates ◽  
Pollution Status ◽  
Sevastopol Bay ◽  
In Situ Decomposition ◽  
Bacterioplankton Abundance

To explain higher fraction of live zooplankton in heavily polluted and eutrophic Sevastopol Bay comparing with cleaner adjacent waters, a hypothesis has been proposed and tested experimentally that more intensive bacteria-driven decomposition of dead organisms in the bay reduced their pool and, as a result, increased the live-to-dead zooplankton ratio. In the experiment, a heat-killed batch culture of the copepod Calanipeda aquaedulcis was used as a substrate for decomposition by natural microbial communities from the waters of different pollution status. Bacterioplankton abundance and in situ decomposition rate of copepod carcasses were shown to be about 3-fold higher in the bay (1.3 × 106 cells ml-1 and 0.13 day-1, respectively) while an approximation of zooplankton non-predatory mortality rates gave equal values for both the sites (about 0.046 day-1). These findings call for revising the ways of interpreting the results of zooplankton viability assays in their relation to water pollution status.   

A mass balance approach to the fate of viruses in a municipal wastewater treatment plant during summer and winter seasons

2013 ◽  
Vol 69 (2) ◽  
pp. 364-370 ◽  
Author(s):  
Katharina Ulbricht ◽  
Hans-Christoph Selinka ◽  
Stefanie Wolter ◽  
Karl-Heinz Rosenwinkel ◽  
Regina Nogueira
Keyword(s):  
Wastewater Treatment ◽  
Mass Balance ◽  
Wastewater Treatment Plant ◽  
Municipal Wastewater ◽  
Winter Season ◽  
Treatment Plant ◽  
P Value ◽  
Virus Inactivation ◽  
Virus Removal ◽  
Virus Retention

In contrast to previous discussion on general virus removal efficiency and identifying surrogates for human pathogenic viruses, this study focuses on virus retention within each step of a wastewater treatment plant (WWTP). Additionally, the influence of weather conditions on virus removal was addressed. To account for the virus retention, this study describes a mass balance of somatic coliphages (bacterial viruses) in a municipal WWTP, performed in the winter and summer seasons of 2011. In the winter season, the concentration of coliphages entering the WWTP was about 1 log lower than in summer. The mass balance in winter revealed a virus inactivation of 85.12 ± 13.97%. During the summer season, virus inactivation was significantly higher (95.25 ± 3.69%, p-value &lt;0.05), most likely due to additional virus removal in the secondary clarifier by insolation. Thus, a total removal of coliphages of about 2.78 log units was obtained in summer compared to 1.95 log units in winter. Rainfall events did not statistically correlate with the concentrations of coliphages entering the WWTP in summer.

scholarly journals PENGGUNAAN MEDIA SERAT PLASTIK PADA PROSES BIOFILTER TERCELUP UNTUK PENGOLAHAN AIR LIMBAH RUMAH TANGGA NON TOILET

2018 ◽  
Vol 1 (2) ◽  
Author(s):  
Nusa Idaman Said
Keyword(s):  
Water Pollution ◽  
Wastewater Treatment ◽  
Low Cost ◽  
Domestic Wastewater ◽  
Treated Water ◽  
Household Wastewater ◽  
Individual Household ◽  
Plan Study ◽  
Show Difference

Water pollution in the big cities in Indonesia, especially in DKI Jakarta has shown serious problems. One of the potential sources of water pollution is domestic wastewater that is wastewater from kitchens, laundry, bathing and toilets. These problems have become more serious since the spreads of sewerage systems are still low, so that domestic, institutional and commercial wastewater causes severe water pollution in many rivers or shallow ground water. Based on the fact that the progress of development of sewerage system is still low, it is important to develop low cost technology for individual house hold or semi communal wastewater treatment such as using anaerobic and aerobic submerged biofilter. This paper describes the pilot plan study of individual household wastewater treatment using anaerobic and aerobic submerged biofilter using plastic fiber media. The raw wastewater in this experiment was from household wastewater. Results of experiment shows that under operating condition 12-24 hours hydraulic retention time, the treated water was physically very clear, and according on chemical analysis the removal efficiency of BOD is 73.24 – 94.92 %, COD 65.80 – 90.76 %, total suspended solids (TSS) 95.60 – 97.69 %, and detergent (MBAS) 56.80 – 88.51 %, respectively. Compared to attempt by using charcoal media, the quality of treated water did not show  difference significantly.  Kata Kunci  : Limbah domestik non toilet, biofilter anaerob-aerob, media serat palstik.

scholarly journals Development of low cost paddy straw-clay (pads-clay) filter for dyes wastewater treatment

2020 ◽  
Vol 5 (1) ◽  
Author(s):  
Abdul Rahman Hassan ◽  
Nor Amalina Ab Rahim ◽  
Mohd Talib Abdul Wahab ◽  
CE Noor Aien CE Mahmood ◽  
Engku Noraien ◽  
...  
Keyword(s):  
Water Pollution ◽  
Wastewater Treatment ◽  
Effective Treatment ◽  
Low Cost ◽  
River Pollution ◽  
Paddy Straw ◽  
Industry Growth ◽  
Aquatic Life ◽  
Polluted River ◽  
Livestock Breeding

Effective treatment of dyes wastewater is important to prevent water pollution. According to data by the Department of Environment (DOE) in 2017, 51 rivers have been polluted because of sewage, industry growth, livestock breeding and attitude of some irresponsible Malaysians that dump trash into river. One of the industries that contribute to river pollution is the batik industry. This is because batik processing activities have resulted in effluents containing chemicals streamed into the river and affecting aquatic life and human health as well. The main goals of this project is to produce a filter from available locally materials in solving polluted river water arising from batik wastewater. Along with the theme “from nature back to nature”, PadS-Clay Filter were prepared from 100% waste material such as paddy straw and clay according to designed formulation. Then, the dyes wastewater was flow on the PadS-Clay Filter and passed through the filter. The UV-Vis spectrophotometer was used to analyze the absorption and concentration of the filtered dyes wastewater. Based on the result, PadS-Clay 2 (PSC2) and PadS-Clay 3 (PSC 3) were the most effective designed formulation for dyes rejection and flux of dyes in treating dyes effluent as the percentage of the dyes rejection for all PSC2 were over than 90%.

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