Bioponds of drainage water purification

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1. Scheme of Bioponds

2. Bioponds

Description

Use of plants for drainage water and soil purification is based on their natural capability of absorbing biogenic elements (nitrogen, phosphor, calium, etc.) in the process of growing. Besides, developing micro-organismic accumulation in plant roots intensively oxidize organic substances of different nature and makes them available for plants. A classical aquatic system in which floating water hyacinth Eichhornia crassipes is used as a basic plant component has been worked out by us for drainage water purification. A well-developed root system, high rate of clonal reproduction and fast accumulation of biomass allow to use this plant for the purification of economic-fecal drains of animal farms and communal units.

Results of drainage water purification of the Kudriashevo pig farm, Novosibirsk region.

Parameter Parameter value in drainage water (mg/l) Post-purification parameter value (mg/l)
ammonium oxygen up to 30-50 4-5
ox. chem. consump до 300 25-30
ox. biol. consump.5 до 150 20-30
oxygen до 0,5 2-5

Efficiency of liquidating contaminants by one hectare of the biopond on ammonium nitrogen - 150-200kg, oxygen biological consumption 21.9-36.5kg, oxygen chemical consumption 38.7-238.0kg, petrochemicals - 1.6-4.5kg.

Experiments in drainage water of the Pavlodar Oil-Processing Plant showed the efficiency of Eichhornia crassipes for drainage water purification from high concentrations of petrochemicals (23.7mg/l), also from sulfides and phenols on the high background of ammonium nitrogen (up to 80mg/l).

Absorbtion of heavy metals by Eichhornia crassipes for 20 days in drainage water of the Belovsk Ore-mining and Processing Enterprise (Kemerovo region, 2000)

Ion of Heavy Metal Concentration in Water (mg/l) Concentration in Plants (mg/kg of dry weight) Accumulation Rate (mg/kg of dry weight a day) Accumulation Ratio(C in plants/ C in water)
Cu2+ 1,0 1955 74,9 1955
Zn2+ 2,0 1809 92,6 905
Pb2+ 1,0 414 20,0 414
Cd+ 0,5 370 19,5 740

Miscantus, the Far-Eastern cane, is very prospective as for recultivation and water purification, also for border plantations around technogenic water bodies (filter zones). It can grow in dry, marshy, highly-mineralised soils and in those contaminated with petrochemicals in a wide range of organic substances (European experience of successful growing miscantus on waste silt lands). It is reproduced in roots, winters well under Siberian environments, has early sprouting (April), 25-30-fold increase. Not reproduced in seeds and it allows to control its spreading. Methods of reproduction and preservation of these plants have been worked out at the Institute of Cytology and Genetics, SB RAS.

Technical-Economic Advantages

The suggested work-out allows to decrease the content of all biogenic contaminants, heavy metals, phenols, petrochemicals, pesticides and to reduce bacterial pollution. It provides all the cycle of bioponds functioning and regeneration.

Fields of Application

  • Cattle-breeding,

  • ecology.

    It is prospective to use such aquatic systems in technogenic water bodies and drains. Eichhornia crassipes can absorb and concentrate heavy metals 1000 times exceeding environmental concentrations.

    Level and Location of Practical Realisation

    The technology has been approbed in the pig farm of Closed Joint-Stock Company "Kudriashevskoye" and drains of the airport "Tolmachevo" and its living blocks. Output of 3 th.m3 of purified drains a day per hectare at the Ore-Mining and Processing Enterprise (Kemerovo region, 2000).

    Methods of reproduction and preservation of these plants have been worked out at the Institute of Cytology and Genetics, SB RAS.

    Patent(s)

    The technology drainage water purification was tested by the State Commission and given the license of the State Committee on Environmental Protection of the Novosibirsk region, 27 January, 2000 (Г 151681).

    Commercial Proposals

    Investitional agreement

    Price List

    To be determined during negotiations.

    Contacts

    Sergei G. Veprev, 
    Candidate of Biological Sciences (PhD) 
    10 Lavrentiev ave., 
    Novosibirsk, 630090, Russia 
    Phone: +7(383) 330-15-21 
    Fax: +7(383) 333-12-78 
    E-mail: veprev@bionet.nsc.ru