Recycling Treated Municipal Wastewater for Industrial Water Use
Recycling Treated Municipal Wastewater for Industrial Water Use Recycling Treated Municipal Wastewater for Industrial Water Use
Economic Incentives and Risk Assessment Economic incentives and assessment/ resolution of risks will attract industries to use recycled wastewater and municipalities to incorporate recycling in their WWTP practices. Data Collection and Research Information on-hand related to treatment requirements for recycled wastewater would expedite the planning process for recycling treated municipal wastewater projects. “Demonstration” Projects Section 4: Implementation Considerations Recycling Treated Municipal Wastewater for Industrial Water Use Establishing partnerships to foster recycling of treated municipal wastewater will provide examples to evaluate reuse practices in Minnesota and the information to develop potential, future regulatory infrastructure, address concerns with risk and legal language for user agreements, and other institutional elements. There are unresolved industrial concerns with risk and liability. To gain acceptance and to recognize the benefits of recycling treated municipal wastewater, particularly when economics are perceived to be in favor of current practices, economic incentives will attract suppliers and customers – and can jumpstart a broader recycling wastewater practice in Minnesota. The cost of water currently does not factor in the benefits of conservation and recycled wastewater competes against a low cost supply in many areas. Information related to the treatment and distribution of recycled wastewater for Minnesota-specific applications is lacking, specifically for cold weather and hard, high salt concentration waters. Site-specific water quality and customer-specific uses require water sampling and analysis. Many of the parameters of interest in planning treatment of a water supply are not analyzed by WWTPs discharging to receiving streams. If water quality data were readily available, wastewater recycling may be evaluated more in the planning stages for new or expansions/improvements or existing industries and WWTPs. One of the questions addressed at the industrial and broad-base stakeholder meetings was what type of demonstration projects would address the issues and concerns that were identified. The overall goal of the project(s) would be to provide industries and municipalities information to better assess the costs and implementation hurdles – resulting in better informed suppliers and users of recycled wastewater with an understanding of the issues before they take on a project. Project results are also a useful part of a public information program, showing that the recycling practice is meeting all the regulations and health indices. Project elements and features considered important include: Project with Established Partners. Identify regulatory, industry, municipal wastewater utility, water utility, and other partners to form a working group that is involved with the project(s). This group would walk “hand-in-hand” through the project and provide review and assessment of the project upon completion. Complete Project Process. Project partners would be involved in the complete project process: the initial conceptual plan, facility plan, design, and construction. Regulatory Process. As part of the complete project process, the regulatory steps for wastewater recycling can be explored and documented. A separate subgroup could be formed to evaluate specific regulatory elements and development of guides or fact sheets for permittees. Public Information. A public information program integrated at the initial project stages is critical to the success of a wastewater recycling project. This includes educating the personnel at the facility, the local community, and those along the transmission route. This could be part of a complete project process, a special project with more of a focus on public education methods, or a state-wide campaign to enhance the ‘image’ for wastewater recycling in Minnesota. Specific Technologies. Some projects can have a more technical focus to improve cost information and a better understanding of the operation and maintenance issues for certain wastewater recycling practices. Metropolitan Council Environmental Services 59
Section 4: Implementation Considerations Recycling Treated Municipal Wastewater for Industrial Water Use The demonstration projects could also be performed by one entity or other approaches, rather than a partnered group. For example, a municipality may unilaterally make treated wastewater available at a quality useable by various industries. In the case of specific treatment technology evaluations, a fullpartnered process may not be required. 4.3 Summary Stakeholders were encouraged by the interest expressed in the topic of wastewater recycling. The general outlook carried from the workshops is that the institutional issues are addressable and need to be solved or in the evaluation process before significant consideration is given to a recycled wastewater project. While there are certainly some technical issues that must be resolved and better understood, the meeting participants were confident that technical solutions could be found. It would be a matter of cost and related benefits that would dictate the feasibility - if the institutional issues are first addressed. 60 Metropolitan Council Environmental Services
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Section 4: Implementation Considerations<br />
<strong>Recycling</strong> <strong>Treated</strong> <strong>Municipal</strong> <strong>Wastewater</strong> <strong>for</strong> <strong>Industrial</strong> <strong>Water</strong> <strong>Use</strong><br />
The demonstration projects could also be per<strong>for</strong>med by one entity or other approaches, rather than a<br />
partnered group. For example, a municipality may unilaterally make treated wastewater available at a<br />
quality useable by various industries. In the case of specific treatment technology evaluations, a fullpartnered<br />
process may not be required.<br />
4.3 Summary<br />
Stakeholders were encouraged by the interest expressed in the topic of wastewater recycling. The general<br />
outlook carried from the workshops is that the institutional issues are addressable and need to be solved or<br />
in the evaluation process be<strong>for</strong>e significant consideration is given to a recycled wastewater project. While<br />
there are certainly some technical issues that must be resolved and better understood, the meeting<br />
participants were confident that technical solutions could be found. It would be a matter of cost and<br />
related benefits that would dictate the feasibility - if the institutional issues are first addressed.<br />
60 Metropolitan Council Environmental Services
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