Impact of Municipal Wastewater on the Quality of the River Sava

1990 ◽  
Vol 22 (5) ◽  
pp. 275-280
Author(s):  
S. Tedeschi
Keyword(s):  
Water Quality ◽  
Oxygen Saturation ◽  
Municipal Wastewater ◽  
Treatment Process ◽  
Fish Kills ◽  
The Past ◽  
Heavy Pollution ◽  
Zagreb Area ◽  
Pollution Loads

The River Sava is very polluted in certain sections. At times, the dissolved oxygen is completely exhausted (1.0 to 3.0 mg O2/l) resulting in frequent massive fish kills. The water quality has significantly deteriorated during the past few decades, due to the industry developed in the watershed and the increased population in the area. Especially heavy pollution loads come from the greater Zagreb area (153 t BOD5/day). Treating the wastewater from Zagreb could upgrade the water quality of the Sava, and 68 to 72% oxygen saturation could be achieved even under the most unfavourable conditions. Particular attention should be given to the choice of the treatment process, due to the planned construction of multi-purpose reservoirs along the Sava.

Modeling of eutrophication and strategies for improvement of water quality in reservoirs

2016 ◽  
Vol 74 (6) ◽  
pp. 1376-1385 ◽  
Author(s):  
Mojtaba Shourian ◽  
Ali Moridi ◽  
Mohammad Kaveh
Keyword(s):  
Water Quality ◽  
Thermal Regime ◽  
Thermal Stratification ◽  
Present Situation ◽  
The State ◽  
Nitrogen Loads ◽  
Quality Of Water ◽  
Pollution Loads

The purpose of this study is to survey the thermal regime and eutrophication states in Ilam reservoir in Iran as the case study. For this purpose and to find solutions for improving the water's quality in the reservoir, two general strategies for reducing the entering pollution loads and water depletions from the reservoir's outlets were analyzed by use of the CE-QUAL-W2 model. Results of the simulation of the present situation show the existence of thermal stratification during summer, which results in the qualitative stratification in the reservoir. According to the qualitative criteria, the Ilam reservoir's state is between mesotrophic and eutrophic. Results of the scenarios of reduction of the nutrients show that in the scenario of 50% reduction of the phosphorus and nitrogen loads into the reservoir, the state of the reservoir would recover from eutrophic to semi-eutrophic. Also, release of water from the reservoir during September, October and November would cause the restoration of the quality of water in the reservoir. To avoid the occurrence of critical eutrophication in the reservoir, reducing the ponding time in the reservoir by fast depletion, preventing entrance of the upstream villages' sewage and agricultural drained waters, which are sources of nitrate and phosphate contamination into the rivers, and also management of the usage of agricultural fertilizers have been suggested.

An inventory analysis of rural pollution loads in China

2006 ◽  
Vol 54 (11-12) ◽  
pp. 65-74 ◽  
Author(s):  
M. Chen ◽  
J. Chen ◽  
P. Du
Keyword(s):  
Agricultural Development ◽  
Municipal Wastewater ◽  
Driving Forces ◽  
Effective Control ◽  
Inventory Analysis ◽  
Agricultural Income ◽  
The Past ◽  
Increasing Demand ◽  
Pollution Loads ◽  
Rural Pollution

Rural pollution has attracted increasing attention over the past decade for its important consequences on surface and groundwater quality. This is particularly so in China due to the wide and effective control of industrial and municipal wastewater discharges over the past decade. Based on the discussion of rural activities in China, this paper develops a new method of inventory analysis through the definition of elementary unit (EU). This inventory analysis approach is then applied to estimate the total rural pollution loads of COD, TN and TP, as well as their spatial distributions in China. Further analysis is also conducted to investigate the correlations between rural pollution loads and agricultural production outputs, as well as population. It is found that China's agriculture is developing largely at the cost of environment quality, and a high population, as well as the increasing demand for agricultural products, is one of the dominant driving forces. The constructed EKC, which describes the relationship between rural pollution loads and agricultural income, also reveals that current agricultural development in China is mostly far from de-locked from the environmental problem.

scholarly journals A Comprehensive Review of Pharmaceutical Care in Type 2 Diabetes Patients; Keeping Developing Countries in View

2016 ◽  
Vol 9 (1) ◽  
pp. 67
Author(s):  
B. O. Ogbonna ◽  
A. C. Oparah
Keyword(s):  
Disease Management ◽  
Pharmaceutical Care ◽  
Treatment Process ◽  
State Management ◽  
The Past ◽  
Disease State Management ◽  
Traditional Drug ◽  
Synthesis Of Materials

Pharmaceutical Care (PC) represents a frontier in disease state management. It is a departure from the traditional drug dispensing of the past to comprehensive and holistic focus on patient disease management and outcomes of pharmacotherapy while systematically and actively identifying potential and actual problems in pharmacotherapy. This narrative review assessed the benefits of pharmaceutical care in promoting patient care and disease management. The study utilized synthesis of materials obtained retrospectively from officially reorganized databases. Some of the articles were obtained from officially reorganized documents. PC is patient oriented and empowers patients to actively participate in their treatment process. Pharmacist's device means of monitoring pharmacotherapy outcomes and systematically track problems of pharmacotherapy while taking responsibility for their actions. PC improves patients' outcomes, reduce cost, and promote patients quality of life.

New challenges for the management of plant nutrients and pathogens in the Waikato River, New Zealand

2001 ◽  
Vol 43 (5) ◽  
pp. 137-144 ◽  
Author(s):  
W. N. Vant
Keyword(s):  
Water Quality ◽  
Algal Blooms ◽  
Diffuse Sources ◽  
Industrial Wastewaters ◽  
The Past ◽  
Green Algal ◽  
New Challenges ◽  
Better Than ◽  
Waikato River

The water quality of the Waikato River is currently much better than it was in the 1950s. Major improvements in the treatment of the sewage and industrial wastewaters which are discharged to the river mean that levels of indicator bacteria in the lower reaches of the river are now many times lower than in the past. Eve so, conditions are still not suitable for swimming, and blue-green algal blooms occur at times. Non-point or diffuse sources of contaminants now dominate the nutrient and pathogens budgets. Progressively-intensifying farming, particularly in lowland areas, is thought to contribute the majority of the contaminants found in the river. Future improvements in water quality will therefore depend more on activities like changes to farming practice – such as retiring the riparian margins of lowland tributaries of the river – than on further advances in wastewater treatment.

Assessing the impacts of wastewater treatment implementation on the water quality of a small urban river over the past 40 years

2015 ◽  
Vol 22 (16) ◽  
pp. 12720-12736 ◽  
Author(s):  
Natacha Brion ◽  
Michel A. Verbanck ◽  
Willy Bauwens ◽  
Marc Elskens ◽  
Margaret Chen ◽  
...  
Keyword(s):  
Water Quality ◽  
Wastewater Treatment ◽  
Urban River ◽  
The Past ◽  
Treatment Implementation

Linking UF reversible and irreversible fouling to the water quality of surface water and treated municipal wastewater

2013 ◽  
Vol 52 (40-42) ◽  
pp. 7598-7608 ◽  
Author(s):  
Frederik Zietzschmann ◽  
Mathias Ernst ◽  
Manuel Godehardt ◽  
Hendrik Paar ◽  
Xing Zheng ◽  
...  
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Municipal Wastewater ◽  
Treated Municipal Wastewater

Study on the Micro-Polluted Water Treatment by GAC-UF

2010 ◽  
Vol 113-116 ◽  
pp. 2049-2052
Author(s):  
Jin Long Zuo
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water Treatment ◽  
Suspended Solids ◽  
Treatment Process ◽  
Drinking Water Treatment ◽  
Polluted Water ◽  
Total Removal ◽  
Water Treatment Process

Nowadays drinking water resource has been polluted, while the conventional treatment process cannot effectively remove polluted matters. In order to tackle this problem, the granular activated carbon (GAC) and ultrafiltration membrane (UF) were introduced into drinking water treatment process. The results revealed that when treat the micro-polluted water the effluent water quality of turbidity, permanganate index and color can reach 0.1NTU, 1.3mg/L-2.3mg/L and 5 degree respectively with GAC-UF process. And the total removal efficiency of turbidity, permanganate index and color can reach 98%-99%, 70%~75% and 60% respectively. The GAC can effectively remove organic matters, while the UF membrane can effectively remove suspended solids, colloids. The GAC-UF combined process can get a good water quality when treat the micro-polluted water.

scholarly journals EVALUATION OF SURFACE WATER QUALITY OF THE AREA OF INFLUENCE OF THE LANDFILL OF THE CITY OF MANAUS/AM

2019 ◽  
Vol 7 (11) ◽  
pp. 1185-1195
Author(s):  
Ana Caroline Dos Passos Santos ◽  
ALEXANDRA AMARO DE LIMA ◽  
Igor Felipe Oliveira Bezerra
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Urban Expansion ◽  
Surface Water Quality ◽  
Fecal Coliforms ◽  
The Past ◽  
Collection Period ◽  
Area Of Influence ◽  
The City

This work aimed to evaluate the quality of surface water around the Manaus Solid Waste Landfill (ARSM), in which it is located near important waterways in a growing urban expansion area.  During the collection period, the parameters pH, T, fecal coliforms, OD, DBO5, nitrate, phosphate, turbidity and total solids were monitored, where these are the main parameters for performing water quality index calculations. The results analyzed indicate contamination in the streams near the perimeter of the Landfill, where the possible origins for non-conformities can be problems in draining the leached and waterproofing system of the landfill ponds. The recovery of the quality of these water resources is essential, since it is an area with flora and fauna that are heritage, not only of the residents who occupy their surroundings, but also the population of Manaus who in the past enjoyed bathing and fishing areas in the streams currently affected by the slurry produced in the landfill.

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