Looking to the land: Cropland application makes good use of excess greenhouse nutrient feedwater

摘要

It has been a winding and sometimes tortuous path but with recent progress there is reason for optimism as things appear to be heading in the right direction. In January 2011, the Ontario Ministry of Environment (MOE) released a factsheet entitled "Greenhouses and Sewage." Greenhouse-source sanitary sewage, storm water and process water were all classified as "sewage" requiring an Environmental Compliance Approval (ECA). While an Environmental Compliance Approval (ECA) process may fit with some greenhouse operations, in most cases the initial cost, ongoing operational cost and uncertainty of outcome due to the site-specific study requirement make it an unattractive choice.