Rainwater collection issues around Class A workshops
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Dear teachers, must rainwater collected around Class A factories first flow into an accident tank before being discharged through municipal pipelines? Can municipal pipelines be directly connected to the outside? ? ?
Rainwater pipelines are generally equipped with valves that lead to accident tanks; under normal conditions in the afternoons, the water can be discharged outside. Monitoring devices are installed at the municipal pipelines, but as a precaution, it’s still better to use one’s own accident tank. If it rains heavily, the water can first be directed into the accident tank, and once the situation improves, it can then be discharged directly into the municipal systems
1. When it has just started to rain, the rainwater is dirty; there may be pollutants, sediment, and other substances on the ground. Therefore, this is considered initial rainwater, and it should not be discharged carelessly； 2. It rained for a while, and since it seems clean now, it can be directly discharged into the municipal system ； 3. As for how to specifically distinguish between these two types of rainwater, one must consult the plumbing and drainage specialists; there are standard calculations for this ； 4. Therefore, the initial rainwater should be collected rather than discharged. Where should it be collected first? Looking at local environmental policies, in some areas separation of rainwater and wastewater is required; it cannot flow into accident ponds, and rainwater collection tanks must be built. In other places, combining these two systems is sufficient to meet the environmental assessment requirements ； 5. In the middle and later stages, rainwater can be directly discharged to the municipal system via a valve. It’s just based on experience; for the standard answer, ask those specializing in water-related fields.
This post was last edited by zdl1966 on 2016-11-11 at 10:51. It should be understood first that the accident pool is intended for emergency use; it is usually empty and must maintain a certain amount of available space. For the collection of rainwater around Class A factories, the rainfall within the first 15–20 minutes flows into the rainwater collection tank and is sent to the wastewater treatment plant; only the rainwater collected after 20 minutes can be discharged through the external pipelines, and testing may also be required when necessary.
I see that’s the requirement; thank you.