WORK PLANS - Laserfiche WebLink

Home Browse Search

Kennedy/Jenks Consultants Chapter 5: Process Water Treatment Evaluation Work Plan This work plan presents an outline for evaluation of the existing process water treatment at The Wine Group Franzia Winery and was prepared in response to Item 2.d of the CAO. 5.1 Introduction The Wine Group treats and disposes of Facility process water by prescreening and using land application practices. Land application of process water is a widely accepted and practiced _ method for treatment and disposal of process water. Land application processes can transform, remove, or retain process water constituents by physical-chemical and biological processes that occur in the soil profile. Solids remaining in the process water after screening are filtered and dried on the ground surface of the vineyards. Dissolved organic material percolates into the soil column where biological treatment, stabilization, and pH buffering occurs. After drying, the soil is often scarified or disked before the next application of process water. The objective of Chapter 5, the Process Water Treatment and Evaluation Work Plan (PWTE Work Plan) is to present a plan to evaluate the existing vineyard soils and their ability to treat the process water. 5.2 Process Water Generation Several processing streams from the wine making process combine with stormwater when present to produce the process water discharged to the vineyards. As discussed in Section 1.3.2, general winery process water consists of crush equipment wash water, stillage waste, general cellar wash water, spent regenerant water from ion exchange units, Facility stormwater runoff, and non-contact cooling water. Various chemicals are added to the process water during various cleaning, washing, ion exchange, and storage operations. The contributing process water streams are proposed for individual characterization in the PWC Work Plan, Chapter 4 of this Work Plan. 5.3 Combined Process Water Quality The combined process water generated at the Facility is typical for wine processing and distillery operations for similar wineries throughout central California. Table 1 provides a summary of historical analytical results for samples collected from process water flows discharged to the vineyards since 2001. As with most wineries, the strength of the process water is highly variable depending on the time of season and operations at the winery. 5.4 Process Water Management System 5.4.1 Operations Currently, process water and Facility stormwater drains to the sump where it is prescreened and pumped to the vineyards for land application treatment and irrigation. Groundwater Protection Work Plan, The Wine Group Page 5-1 Franzia Winery, Ripon, California �ti�E 2;I^�q