An Assessment of Self-purification of Regulated and Natural Streams

2017 ◽  
Author(s):  
Oksana Survilė ◽  
Valentinas Šaulys ◽  
Auksė Stanionytė
Keyword(s):  
Water Quality ◽  
Nitrate Concentration ◽  
Surface Water Quality ◽  
Woody Vegetation ◽  
Natural Stream ◽  
Natural Streams ◽  
Average Coefficient ◽  
Different Seasons ◽  
Regulated Stream ◽  
Stream Nitrate

In these latter days it has become topical to reconsider, the technologies and practice of regulated for drainage purposes streams supervision, to find ways how to combine agricultural productivity and restore lost ecological balance at least partially. The article analyzes the influence of natural and regulated stream stretches on water quality and stream self-purification effectiveness. The analysis of nitrate concentration in water samples taken from natural and regulated stream stretches was conducted for the identification of water quality. Nitrate (NO3) concentrations and their alternation during different seasons were studied. The conducted analysis revealed that stream nitrate self-purification is better in natural stream stretches. An average coefficient of self-purification recorded in the course of the research in natural stretches was 0.57, whereas in a regulated stretch – 0.09. On purpose to improve surface-water quality and self-purifi-cation effectiveness it is suggested to naturalize regulated stream stretches, to allow woody vegetation grow on slopes, to encourage meandering, pools and shoals forming processes in floodplains.

scholarly journals An Assessment of Self-Purification in Streams

Water ◽  
2019 ◽  
Vol 12 (1) ◽  
pp. 87
Author(s):  
Valentinas Šaulys ◽  
Oksana Survilė ◽  
Rasa Stankevičienė
Keyword(s):  
Confidence Level ◽  
Average Concentration ◽  
The Self ◽  
Drainage Systems ◽  
Natural Stream ◽  
Excess Water ◽  
Natural Streams ◽  
Average Coefficient ◽  
Eastern Highlands ◽  
Coastal Lowlands

The territory of Lithuania is characterized by a prevailing moisture excess, therefore in order to timely remove excess water from arable lands, the drainage systems have long been installed. In order to drain excess water people used to dig trenches, to regulate (deepen or straighten) natural streams. The length of regulated streams has reached 46,000 km and they are deteriorated ecosystems. Investigations showed that the self-purification of streams from nitrates and phosphates is more effective in natural stretches than in stretches regulated for drainage purposes. Decrease in the average concentration of nitrates in natural and regulated stretches are 8.8 ± 5.0 and 3.0 ± 2.9 mg NO 3 − L−1, respectively. The average coefficient of nitrate self-purification, at a confidence level of 95% in natural stream stretches is 0.50 ± 0.22, and in regulated is −0.15 ± 0.21 km−1, and this difference is essential. The change in the average concentration of phosphates in natural and regulated stretches is almost the same, 0.2 ± 0.1 and 0.2 ± 0.2 mg PO 4 3 − L−1, respectively. The average coefficient of phosphate self-purification, at a confidence level of 95%, in natural stream stretches is 0.28 ± 0.12, in regulated −0.14 ± 0.12 km−1, and this difference is not essential. In terms of the need for the renovation of drainage systems it is suggested that soft naturalization measures are first applied in the streams of Western (Samogitian) Highlands, Coastal Lowlands, and South-Eastern Highlands to improve their self-purification processes.

AN EVALUATION OF SUB-SURFACE WATER QUALITY AROUND BHARUCH-SURAT INDUSTRIAL REGION, GUJARAT, INDIA

2019 ◽  
Vol 38 (2) ◽  
pp. 200-220
Author(s):  
SOMNATH SAHA ◽  
◽  
SUKANTA KUMAR SAHA ◽  
TATHAGATA GHOSH ◽  
ROLEE KANCHAN ◽  
...  
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Surface Water Quality ◽  
Industrial Region

Surface Water Quality Assessment for the Suitability of Drinking and Domestic Purposes in West Bokaro Coalfield, India

2015 ◽  
Vol 35 ◽  
pp. 13-16
Author(s):  
Kumar Tiwari Tiwari ◽  
Marina De Maio ◽  
Kumar Singh Singh ◽  
Gianpiero Amanzio ◽  
Muriel Lavy
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Quality Assessment ◽  
Surface Water Quality ◽  
Water Quality Assessment ◽  
West Bokaro Coalfield

Surface Water Quality Assessment. Case Study: Târnava Mare River, Mediaș Town-Romania

2011 ◽  
Vol 4 (5) ◽  
pp. 70-72
Author(s):  
Cristina Roşu ◽  
◽  
Ioana Piştea ◽  
Carmen Roba ◽  
Mihaela Mihu ◽  
...  
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Quality Assessment ◽  
Surface Water Quality ◽  
Water Quality Assessment

Surface Water Quality-Assurance Plan for the Indiana District of the U.S. Geological Survey

2003 ◽  
Author(s):  
James A. Stewart ◽  
Donald V. Arvin
Keyword(s):  
Water Quality ◽  
Quality Assurance ◽  
Surface Water ◽  
Surface Water Quality ◽  
Geological Survey ◽  
The U.S

Surface-water quality-assurance plan for the USGS Georgia Water Science Center

2005 ◽  
Author(s):  
Anthony J. Gotvald ◽  
Timothy C. Stamey
Keyword(s):  
Water Quality ◽  
Quality Assurance ◽  
Surface Water ◽  
Surface Water Quality ◽  
Science Center ◽  
Water Science

Surface-water-quality assessment of the Yakima River basin in Washington: major-and minor-element data for sediment, water, and aquatic biota, 1987-91

1994 ◽  
Author(s):  
Gregory J. Fuhrer ◽  
Shelley L. Fluter ◽  
Stuart W. McKenzie ◽  
Joseph F. Rinella ◽  
J. Kent Crawford ◽  
...  
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Quality Assessment ◽  
River Basin ◽  
Surface Water Quality ◽  
Minor Element ◽  
Water Quality Assessment ◽  
Aquatic Biota ◽  
Element Data ◽  
Yakima River
Sign in / Sign up

Export Citation Format

Share Document