Constructed wetlands as an alternative restoration measure for shallow lakes

2013 ◽  
Vol 68 (7) ◽  
pp. 1672-1678 ◽  
Author(s):  
M. Bozic ◽  
G. Nikolic ◽  
Z. Rudic ◽  
V. Raicevic ◽  
B. Lalevic
Keyword(s):  
Water Quality ◽  
Constructed Wetland ◽  
Shallow Lakes ◽  
Treatment Plant ◽  
Technical Solution ◽  
Lake Water Quality ◽  
Cultural Eutrophication ◽  
Quality Of Water ◽  
Restoration Measure ◽  
Key Aspects

This paper deals with the consequences of cultural eutrophication and unconventional solutions for shallow lake restoration. Cultural eutrophication is the primary problem that affects especially shallow lakes, due to their physical characteristics (e.g. shallow depth, lack of stratification). Palic Lake, a very shallow Pannonian lake, received treated municipal wastewaters coming from the lagoons of a wastewater treatment plant. The sewage discharge mainly increased the nutrient load to the lake in the last decades. The lake sustainability is affected by inappropriate quality of water that flows into the lake, and abundance of deposited sediment. The technology that can provide both improvement of water quality and resolution of the sediment problem is a constructed wetland, which is designed to utilise the natural processes involving wetland vegetation, soil and their associated microbial assemblages to assist in additional water treatment. The technical solution is based on three key aspects: quality and quantity of deposited sediment, enriched by nutrients; effluent quality; desired lake water quality. A designed constructed wetland can accomplish the desired water quality and gradually remediate deposited sediment.

scholarly journals Simulating Diurnal Variations of Water Temperature and Dissolved Oxygen in Shallow Minnesota Lakes

Water ◽  
2021 ◽  
Vol 13 (14) ◽  
pp. 1980
Author(s):  
Bushra Tasnim ◽  
Jalil A. Jamily ◽  
Xing Fang ◽  
Yangen Zhou ◽  
Joel S. Hayworth
Keyword(s):  
Water Quality ◽  
Dissolved Oxygen ◽  
Water Temperature ◽  
Shallow Lakes ◽  
Quality Model ◽  
Lake Water Quality ◽  
Ecological Processes ◽  
Turbulent Diffusion Coefficient ◽  
Hourly Data ◽  
Mean Square Errors

In shallow lakes, water quality is mostly affected by weather conditions and some ecological processes which vary throughout the day. To understand and model diurnal-nocturnal variations, a deterministic, one-dimensional hourly lake water quality model MINLAKE2018 was modified from daily MINLAKE2012, and applied to five shallow lakes in Minnesota to simulate water temperature and dissolved oxygen (DO) over multiple years. A maximum diurnal water temperature variation of 11.40 °C and DO variation of 5.63 mg/L were simulated. The root-mean-square errors (RMSEs) of simulated hourly surface temperatures in five lakes range from 1.19 to 1.95 °C when compared with hourly data over 4–8 years. The RMSEs of temperature and DO simulations from MINLAKE2018 decreased by 17.3% and 18.2%, respectively, and Nash-Sutcliffe efficiency increased by 10.3% and 66.7%, respectively; indicating the hourly model performs better in comparison to daily MINLAKE2012. The hourly model uses variable hourly wind speeds to determine the turbulent diffusion coefficient in the epilimnion and produces more hours of temperature and DO stratification including stratification that lasted several hours on some of the days. The hourly model includes direct solar radiation heating to the bottom sediment that decreases magnitude of heat flux from or to the sediment.

scholarly journals Causes of polytrophism of three lakes in the Wdzydze Landscape Park

2011 ◽  
Vol 11 (3) ◽  
pp. 97-103
Author(s):  
Jerzy Jańczak ◽  
Wojciech Maślanka ◽  
Kamil Nowiński
Keyword(s):  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Phosphorus Compounds ◽  
Lake Water Quality ◽  
Nitrogen And Phosphorus ◽  
Quality Of Water ◽  
Quality Of Waters ◽  
Lake Inflows

Causes of polytrophism of three lakes in the Wdzydze Landscape ParkIn the lakes Cheb and Słupino, located in the Wdzydze Landscape Park the quality of waters has been deteriorating in recent years. In the hydrologic year 2009 the quality of water was examined three times. Monthly measurements on the lake inflows and outflows were carried out 12 times to determine biogenic loads. In 2010 the supplementary measurements of biogenic loads were taken in the streams five times. According to Vollenweider's criterion, the loads of nitrogen and phosphorus compounds are too big, the heaviest to Lake Cheb. The discharge from the new sewage treatment plant is directed by the inflows into this lake. A similar situation takes place in the inflow to Lake Schodno. Paradoxically, in some catchments the construction of the sewage treatment plant may result in the deterioration of lake water quality.

Long-term changes in lake sediments and their infl uences on lake water quality in Japanese shallow lakes

2010 ◽  
Vol 177 (3) ◽  
pp. 177-188 ◽  
Author(s):  
Takehiko Fukushima ◽  
Koichi Kamiya ◽  
Yuichi Onda ◽  
Akio Imai ◽  
Kazuo Matsushige
Keyword(s):  
Water Quality ◽  
Lake Sediments ◽  
Shallow Lakes ◽  
Lake Water ◽  
Lake Water Quality ◽  
Long Term Changes

scholarly journals Processing System and Evaluation Microbiological Quality of Drinking Water Fountain in Surabaya City

2020 ◽  
Vol 12 (3) ◽  
pp. 154
Author(s):  
Dian Novitasari
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water Treatment ◽  
Treatment Plant ◽  
Microbiological Quality ◽  
Processing System ◽  
Secondary Data ◽  
Water Company ◽  
Quality Of Water

Introduction: Drinking water fountain (KASM) is one of the innovations of the Regional Drinking Water Company (PDAM) Surya Sembada Surabaya City to provide drinking where the location is in various public facilities. Health problems in people who consume KASM water can occur when the quality of water is not eligible. Unsafe drinking water can interfere with health and can cause waterborne disease. The purpose of writing this article is to identify the processing system and analyze the quality of water microbiology of KASM. Method: This type of research was a descriptive observational with case design report. Subject of study was drinking water fountain (KASM) was one of the innovations of the Regional Drinking Water Company (PDAM) Surya Sembadin the city of Surabaya. The data used was secondary data on 13 samples of KASM locations originating from the PDAM Surya Sembada Surabaya City and various literature. The method of data analysis used is qualitative. Result and Discussion: Water treatment in each KASM unit is an advanced process of water treatment plant (IPAM) PDAM Surya Sembada City of Surabaya. A series of water treatment processes through several equipments, consisting of: pressure tank, basin, low and high pressure switch, booster pump, radar, tank container, UV lamp, RO, Flow Reject, remineral, hexagonal, post-carbon, 1 micron catridge, GAC, 5 micron Catridge, and solenoid. Results of the evaluation of the microbiological quality of KASM based on the data quality Report water in January 2019-January 2020 indicates that the total parameters coliform at 13 point location 4.69% are not eligible, while for the parameter fecal coliform 100% qualified drinking water quality. Conclusion: monitoring of water quality, processing system, and sanitation need to be applied regularly to provide safe drinking water for the community

scholarly journals A Study Of Water Quality In The Amaravathi Area, Guntur Dist, Andhra Pradesh, India

2020 ◽  
Author(s):  
Srinivasa Rao P. ◽  
sumanth kommathoti ◽  
Kamal Teja M
Keyword(s):  
Water Quality ◽  
Andhra Pradesh ◽  
Treatment Plant ◽  
Pollution Index ◽  
Index Method ◽  
Study Region ◽  
Quality Of Water ◽  
Physical And Chemical ◽  
Monthly Variations

Water is the important for everyone for land and regulating the climate. It is one of the most important compounds that profoundly influence life. The quality of water usually described according to its physical and chemical characteristics. The quality of water is studied in the villages of AMARAVATHI, Andhra Pradesh, India. The water samples from ten locations within the area of the Amaravathi region are collected with monthly variations for three month and analysed for their suitability with respect to drinking, irrigation . The results are compared with the respective BIS codes and Indian standards coads analysed using different approaches (a) National Sanitation Foundation Water Quality Index (NSFWQI) (b) Nemerows pollution index method . However, the overall ground water quality is suitable for irrigation purposes, though a few parameters showed high values at few locations.. Parameters that are tested include temperature ,pH, Hardness ,Acidity, Alkalinity ,turbidity ,chlorides ,DO,BOD and based on the quality treatment plant will also be designed. The water quality is ranked as Excellent Good Poor to Very Poor in the study region based on test results.

Monitoring land use change in the Lake Taupo catchment between 1975, 1990 and 2002 using satellite remote sensing data

2007 ◽  
pp. 17-22
Author(s):  
H. Lilienthal ◽  
A. Brauer ◽  
K. Betteridge ◽  
E. Schnug
Keyword(s):  
Remote Sensing ◽  
Water Quality ◽  
Land Use ◽  
Land Use Change ◽  
Satellite Remote Sensing ◽  
Remote Sensing Data ◽  
Native Vegetation ◽  
Lake Water Quality ◽  
Livestock Farming ◽  
Slow Decline

Conversion of native vegetation into farmed grassland in the Lake Taupo catchment commenced in the late 1950s. The lake's iconic value is being threatened by the slow decline in lake water quality that has become apparent since the 1970s. Keywords: satellite remote sensing, nitrate leaching, land use change, livestock farming, land management

Improvement of Lake Water Quality by using Moving Rapid Water Treatment System

2018 ◽  
Vol 18 (1) ◽  
pp. 107-115 ◽  
Author(s):  
Kwang-Hee Lee ◽  
◽  
Min-Ho Kim ◽  
Nam-Woo An ◽  
Chul-hwi Park
Keyword(s):  
Water Quality ◽  
Water Treatment ◽  
Lake Water ◽  
Treatment System ◽  
Lake Water Quality ◽  
Water Treatment System

Spatial and Temporal variation analysis of water quality of Hemavathi River, Karnataka, India

2018 ◽  
Vol 6 (9) ◽  
pp. 196
Author(s):  
Santhosh K. M ◽  
S. Prashanth
Keyword(s):  
Water Quality ◽  
Agricultural Runoff ◽  
Spatial And Temporal Variation ◽  
Final Conclusion ◽  
Variation Analysis ◽  
Pollution Load ◽  
Quality Of Water ◽  
Pollution Loading ◽  
Origin Point

Urban development, agricultural runoff and industrialization have contributed pollution loading on the environment.  In this study Hemavathi river water from a stretch from its origin point to its sangama was studied for pollution load by determining parameters of water quality like pH, Alkalinity,  Ca, Mg, Nitrate, TDS, BOD, COD , and the results were compared with WHO and BIS standards to draw final conclusion on the quality of water.

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