Treatment of Lake Sartlan (Novosibirsk region, Russia)

The purpose of the experiment was to demonstrate the effectiveness and environmental safety of the use of BIOCHLOFEEDⓇ biotechnology to combat bluegreen algae and organic pollutants in lake Sartlan (total area - 23,800 hectares), as well as to improve the quality and clarity of water in the lake.

The objectives of the experiment included:

Carry out biological remediation of the lake using biotechnology BIOCHLOFEEDⓇ;
Conduct related observations and records;
Eliminate blue-green algae (cyanobacteria) "blooms" in the lake;
Improve the appearance and recreational properties of the lake.

Description of the experiment

The bioproduct BIOCHLOFEEDⓇ was introduced in 3 stages: the first time - at the end of February 2018 under the ice (holes were made) at the rate of 10 liters per 1 hectare of lake; the second time - at the end of April 2018 along the entire perimeter of the lake at the rate of 10 liters per 1 hectare of lake; the third time - at the end of May 2018 along the entire perimeter of the lake at the rate of 10 liters per 1 hectare of lake.
From May to September 2018 inclusive (once a month), water samples were taken from the lake for analysis of phytoplankton, as well as dissolved oxygen and pH. These analyzes were carried out at the Independent Analytical Laboratory (Novosibirsk, Russia).
Before the introduction of the bioproduct BIOCHLOFEEDⓇ, every year from July to September, a “blooming” of blue-green algae occurred in the lake, releasing dangerous toxins and a sharp unpleasant odor of decaying organic matter was observed. Periodically, massive fish kills (carp, perch, peled, roach) occurred in the lake.
After adding the BIOCHLOFEEDⓇ bioproduct, the problem with blue-green algae was completely resolved and the pond did not “bloom” in 2018. There were no mass fish deaths on the lake in 2018.
On September 15, 2018, the pilot project was considered successful and ended.

Analyzes from May 15, 2018:

Phytplankton: green microalgae (Chlorophyceae) - 89.5% (of which Chlorella Vulgaris - 87.3%), diatoms - 7.3%, cyanobacteria - 3.2%. Oxygen - 8.1 mg/l, pH - 8.0

Analyzes from July 15, 2018:

Phytplankton: green microalgae (Chlorophyceae) - 96.5% (of which Chlorella Vulgaris - 94.2%), diatoms - 2.3%, cyanobacteria - 1.2%. Oxygen - 8.7 mg/l, pH - 7.8

Analyzes from August 17, 2018:

Phytplankton: green microalgae (Chlorophyceae) - 97.6% (of which Chlorella Vulgaris - 95.8%), diatoms - 1.8%, cyanobacteria - 0.6%. Oxygen - 9.9 mg/l, pH - 7.7

Analyzes from September 11, 2018:

Phytplankton: green microalgae (Chlorophyceae) - 97.4% (of which Chlorella Vulgaris - 95.9%), diatoms - 1.9%, cyanobacteria - 0.7%. Oxygen - 10.1 mg/l, pH - 7.9

Fight against cyanobacteria

The method has shown well the possibilities of effectively and safely blocking the development of cyanobacteria in the lake. Thanks to the winter-spring application, the KD BCF strain of green microalgae of the Chlorellaceae family, on the basis of which the bioproduct BIOCHLOFEEDⓇ is produced, managed to develop well in the lake and began to dominate, therefore cyanobacteria were not able to fully develop in the water body and the lake did not “bloom” in 2018.

Improving the appearance of the lake

A visual inspection of the pond demonstrated the capabilities of biotechnology based on the BIOCHLOFEEDⓇ biological product to improve the appearance of water bodies: the lake Sartlan acquired the natural appearance of a healthy water body with a smooth mirror surface, and water transparency improved. There was no mass death of fish in the lake, as in previous years.

Economic efficiency

The method of biological remediation of fresh water bodies using BIOCHLOFEEDⓇ biotechnology has no economic alternative. A preliminary comparative analysis with existing methods of treating water bodies from blue-green algae and organic pollutants showed that none of them can compare in effectiveness, environmental safety and cost with BIOCHLOFEEDⓇ biotechnology.

Main conclusions:

Despite the difficult conditions (constant release of organic pollutants into the lake), the method has proven to be effective and environmentally safe.
In addition to the main task (the fight against blue-green algae), the method has demonstrated the ability to eliminate mass fish kills and significantly improve the appearance and recreational qualities of the lake.
Cost-effectiveness calculations have proven that there is no economic alternative to BIOCHLOFEEDⓇ biotechnology