Why do environmental protection agencies require companies to separate rainwater and wastewater?
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In my opinion, as long as the wastewater discharge outlets of a company comply with the relevant standards, and the wastewater is discharged in accordance with appropriate criteria (such as requirements regarding flow rate and pollutant concentrations), that’s sufficient. Whether to implement separate systems for rainwater and sewage disposal is a decision left to the company itself. So why do environmental protection agencies now require companies to do so?
First, it is to prevent rainwater and sewage from contaminating river waters and other water bodies； The second is to prevent the mixing of rainwater and sewage from having an adverse impact on wastewater treatment~~
In fact, many companies do not have such a division
Due to its low level of pollution from rainwater, it can be directly discharged into urban rivers after being diverted; through natural sedimentation, it can be used as water for natural landscaping or as municipal water for road irrigation. Thus, by purifying and buffering the rainwater before releasing it into rivers, the efficiency of using surface water can be improved. At the same time, wastewater is discharged into the sewage network and treated at sewage treatment plants to enable its reuse. Separating rainwater from wastewater can accelerate the collection of sewage, improve the efficiency of wastewater treatment, prevent pollution of rivers and groundwater by sewage, significantly enhance the urban water environment, and also reduce the costs associated with wastewater treatment. Separating rainwater from wastewater facilitates the collection and utilization of rainwater as well as the centralized management of wastewater discharge, reducing the impact of water volume on wastewater treatment plants and ensuring their processing efficiency. It will **improve the environmental quality, urban standards, and management level of the city, thereby genuinely enhancing the living conditions and quality of life for its citizens.**
We don’t have a division – just one groove; P
Separation of rainwater and wastewater means treating rainwater and industrial/living wastewater separately. Since rainwater contains fewer pollutants, with most of its components being pollution-free neutral particles, it does not need to go through the biochemical treatment systems in wastewater treatment plants; it can be discharged directly into rivers without causing environmental pollution. Industrial and domestic wastewater contains various complex substances such as COD, nitrogen, and phosphorus, and must be treated in wastewater treatment plants before it can be discharged in compliance with standards.
The Ministry of Environmental Protection is on its way; P
It’s probably due to the costs associated with wastewater treatment