COD of the biochemical-treated printing and dyeing wastewater is 300, with a colority of 200 times
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The biochemical-treated wastewater from printing and dyeing processes has a COD level of 300 and a color intensity of 200 times the standard. How can this wastewater be reduced to a COD level of around 50 and a color intensity of less than 10 times the standard? The process must be simple, with costs of around 1.2 yuan per ton of water. Does anyone have any good techniques for this?
With a regulation tank + physical-chemical coagulation and sedimentation + hydrolysis and acidification + aerobic treatment (MBR) + ozone, Grade B water quality is fully guaranteed.
Is it possible to achieve a cost of around 1.2?
The cost of treating printing and dyeing wastewater using normal processes is around 0.8–0.9 yuan; however, this cost increases when the concentration of the wastewater is high or the ammonia nitrogen level is high.
Later, membrane separation will be used to recover pure water. The concentrated water is returned to the original system for treatment
A chroma value of 200 is not good; go ahead and do it:lol:lol
Biochemical wastewater can be treated using adsorption resins
For this water, it is necessary to first ensure that the existing treatment process works effectively to reduce COD to the level of 300–400; only then can other methods be considered in order to reduce costs.
In the printing and dyeing process, some macromolecular substances can be removed in advance through coagulation, which further reduces the COD of the wastewater and minimizes pollution of the resin. Subsequent adsorption using resin can reduce the COD to 70 mg/l, rendering the water almost colorless and meeting the standards for reuse
To reduce wastewater treatment costs, it is possible to consider using equipment with low energy consumption and high efficiency. Magnetic separation and centrifugal blowers can effectively improve the efficiency of biochemical treatment and reduce the costs associated with wastewater treatment. Zhejiang has many cases of use in printing and dyeing. We can talk on the phone.