Is the effluent from recirculated water considered wastewater or clean water?
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Everyone: Is the wastewater from circulating water considered sewage or clean water? Where should it be directed? What is the basis?
It varies from factory to factory; check the pollutant indicators!
If it’s being discharged, it must be wastewater. Now, even recycled water is considered wastewater.
COD will definitely be high; if you don’t believe it, conduct an analysis. Whatever the type of water, it can only be considered rainwater for discharge if it meets the rainwater discharge standards; otherwise, it is wastewater.
It must be sewage; it can only go to the wastewater treatment system. 【The COD level is excessive, as are the levels of total salts, ammonia nitrogen, and total phosphorus, compared to the rainwater discharged】
1. Let’s take a look at your environmental impact assessment approval； 2. Check the process of your circulatory system ； 3. Confirm the concentrations of PH, total dissolved solids, and total phosphorus (they should be below the first-level standards for comprehensive wastewater discharge; it is advisable to verify this with the local environmental protection agency). ）
It should be considered wastewater; depending on your company’s environmental assessment and approval report, you must comply with the requirements outlined in it. Factory wastewater discharge generally needs to comply with GB/T31962-2015 \"Quality Standards for Wastewater Discharged into Urban Sewers.\" The levels of Cl-, Ca, P, etc. in the wastewater from closed-loop systems are quite high, and the conductivity is also high.
In practice, it depends on the conditions of each individual unit; the pollutant indicators vary
How can it still be clear water with so many chemicals added? It can only be processed at a wastewater treatment plant.