A Tariff Model for Reclaimed Water in Industrial Sectors: An Opportunity from the Circular Economy

Round 1

Reviewer 1 Report

1. In lines 38-40, "the concept of the Circular Economy has been gaining momentum in recent decades in order to keep products and raw materials in the economic system for a longer period of time", What does this sentence mean?

 2. In lines 43-44, "removing the dependence between economic growth and the production process", What does this sentence mean?

3. How to understand  tariff design and cost recovery represent a major barrier to incentivise the use of reclaimed water?

4. I still cannot makesense what is the relationship between tariff and the use of reclaimed water.

Author Response

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Author Response File: Author Response.pdf

Reviewer 2 Report

In this article, the authors represented a tariff model in support of successful water reclamation in the industrial sector. The manuscript is very interesting, and the findings are quite encouraging. Some minor improvements are required before further processing of the submitted work. Please check the comments below:

1.      The authors need to mention the main findings of the research in the abstract.

2.      Rationale of the study should be more robust.

3.      L63-66: Use some recent information.

4.      L69: Include a few examples of physico-chemical treatment methods.

5.      L125: should be ‘disinfected’.

6.      Key results are also missing in the conclusion section.  

Author Response

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Author Response File: Author Response.pdf

Reviewer 3 Report

Comments:

1.      Lines 192-194: Please elaborate on the statements on these lines with reference to the results presented in Table 1 that shows only Tertiary Treatment costs. Why is tertiary treatment less expensive than secondary treatment?

2.      Lines 362 and 365: Please check the references on these lines.

3.      It would be helpful to the readers of this manuscript if examples of calculations for the Total Costs (Tables 9-13) were presented in the manuscript.  This would also improve the quality of the manuscript.

4.      Line 389:  Please provide the calculation of the margin of 15,756 € in the manuscript.

Author Response

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Author Response File: Author Response.pdf