Skip to main content

The application of biotechnology in the restoration of Indian Lake, MN

Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

The restoration of Indian Lake in Wright County, Minnesota, is a demonstration project to remove excess nutrients in its watershed using biotechnology methods. The main functions of the biotechnology treatments are to improve water quality, reduce nutrients, reduce algae bloom, promote biodegradation of organic residue and sludge in the lake sediment, improve oxygenation, minimize eutrophication problems, transform nutrient load from flora into a fauna nutrient reservoir and improve transformation of pollutants into natural and beneficial food for higher life forms. Indian Lake is eutrophic lake with decreased transparency, an anoxic hypolimnion during the summer and has macrophyte problems. Methods used include the application of Bacta-pur® microbial culture and aeration. Monthly samples were collected to analyze water temperature, dissolved oxygen, chlorophyll-a, TSS, Secchi disk, turbidity, ammonium nitrogen, nitrates, total phosphorus and identification of biological parameters that include the occurrence and abundance of benthic organisms, phytoplankton and zooplankton. Paired samples t-tests were conducted to show statistical differences in water quality parameters before and after treatments of Bacta-pur® microbial culture. Over time, dissolved oxygen levels increased, ammonium nitrogen and nitrates decreased and after initial application of Bacta-pur® phosphorus levels decreased. The Carlson Trophic Index (TSI) is a quantitative approach to determine eutrophication within lake ecosystems and Indian Lake has indicated a decline in trophic state indices from 68.3 to 56.7 after the initial application of Bacta-pur®.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Data/Media
No Metrics

Keywords: BACTA-PUR REG; BIOTECHNOLOGY METHODS; EUTROPHICATION; LAKE RESTORATION; MICROBIAL CULTURE

Document Type: Research Article

Publication date: 2007-10-01

More about this publication?
  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

    A subscription to the Proceedings of the Water Environment Federation includes access to most papers presented at the annual WEF Technical Exhibition and Conference (WEFTEC) and other conferences held since 2000. Subscription access begins 12 months after the event and is valid for 12 months from month of purchase. A subscription to the Proceedings of the Water Environment Federation is included in Water Environment Federation (WEF) membership.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access. Access begins 12 months after the conference or event
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • Learn about the many other WEF member benefits and join today
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more