Technical assistance: Can circulating water wastewater be fed into the sewage treatment system?
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This post was last edited by hesonchang214 on 2013-6-14 06:42. Hello everyone; as we all know, the wastewater from circulating water systems is usually discharged outside the plant as clean wastewater. Now the company’s management is considering environmental protection issues and hopes to discharge the recycled water after biochemical treatment. I’m not sure if it’s feasible Because the chloride content in the circulating water was analyzed, it is approximately 200 mg/l. I wonder what the experts think about this? I would appreciate your advice! Thank you!
The discharge of circulating water is mainly due to excessive phosphorus levels in the water; all other parameters allow for direct discharge. Discharging water after it has been treated is of course good, as this helps to reduce eutrophication in water bodies.
I’m mainly worried that such a high chlorine content might kill or inhibit the bacteria in the wastewater system
For circulating water systems, COD levels usually do not exceed the specified limits. Regarding phosphorus, I personally don’t think there should be too many problems; even if the phosphorus level is too high, it’s not necessary to use wastewater treatment to reduce it.
It’s not just the chloride ions; what you’re actually concerned about is the overall salt content. For circulating wastewater, measure the salt content; also check the salt level in your existing biochemical system. If the former is higher than the latter, there’s no problem; if it is higher, you should consult your wastewater design specialist. Don’t worry; I’ve seen many facilities recycle wastewater and send it to the biological treatment system.
It’s possible to enter, but it’s not necessary. The quality of the wastewater from the circulating water system is still very good, exceeding the **discharge standards; therefore, treating it again through wastewater treatment would be a waste of energy.
The wastewater from circulating water enters the sewage system, which can be considered an effective source of nutrients for it. When the chloride ion content in wastewater is no more than 1000, it will not have an inhibitory effect on microorganisms
The wastewater from our plant’s circulating water system is sent to the sewage treatment system, and it operates properly. The chloride content in the circulating water at our plant is required to be less than 300 mg/l.
The circulating water waste from our company is sent to the wastewater treatment system, where it functions properly and helps to dilute the wastewater from other equipment, thereby meeting the requirements for water entering the wastewater treatment plant.
If the quality of the circulating water waste is stable and meets or exceeds the **discharge standards, it can be discharged directly; if its quality is poor, it should be sent to the wastewater treatment system, though this may result in the production wastewater not meeting the required treatment standards.
It is completely acceptable for the wastewater from the circulating water system to be sent to the sewage treatment system. Standard design practices require that such water be directed to the sewage treatment system. Not only the wastewater from the circulating water system needs to be treated, but also any leaks in the water supply system must be taken into account; in such cases, the COD level in the wastewater can become extremely high, leading to environmental pollution problems. It is therefore safest to send the water to the sewage treatment system before it is discharged