STP1112: Evaluation of the Carbo-Flo● Pesticide Waste Management System

    Hall, FR
    Headpost-doctoral research associategraduate research associate, Laboratory for Pest Control Application Technology (LPCAT), The Ohio State University, Wooster, OH

    Downer, RA
    Headpost-doctoral research associategraduate research associate, Laboratory for Pest Control Application Technology (LPCAT), The Ohio State University, Wooster, OH

    Chapple, AC
    Headpost-doctoral research associategraduate research associate, Laboratory for Pest Control Application Technology (LPCAT), The Ohio State University, Wooster, OH

    Pages: 9    Published: Jan 1992


    Abstract

    The CARBO-FLO● water effluent treatment process uses a simple flocculation and filtration system which requires no specialized personnel for its effective use. Treatment is carried out using pre-weighed/pre-packed materials designed to treat 1000 liters of diluted spray liquor. The flocculation and settlement process takes a minimum of 1 hour. Filtration through one coarse gravel and two fine carbon filters takes approximately 2 hours.

    Water containing atrazine, alachlor and permethrin was processed through the specially designed SENTINEL● plant. These pesticides were chosen as they are widely used and represent a range of chemical groups. Trials using both single products and a three way mix were performed. Analysis of the treated water at different points in the system was carried out using gas chromatography. All treatments resulted in >99.9% of the pesticide being removed from the end water. Water thus treated can, at present, be recycled for subsequent use as rinse water or may be discharged into a soakaway. All solid waste from the process can be incinerated. The carbon filters can be regenerated. Some possible user problems with the flocculation process were encountered and investigated. Adequate dilution of the pesticide waste liquor was found to be essential for the process to be completely efficient.

    Keywords:

    Pesticide waste management, Permethrin, Atrazine, Alachlor


    Paper ID: STP16868S

    Committee/Subcommittee: E35.22

    DOI: 10.1520/STP16868S


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