Everyone, let’s figure out how to deal with this kind of wastewater – it’s urgent! ! !
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Let’s consider how to treat this type of wastewater: 1# (mother liquor): 1 ton; in the U section, COD is 174,780 mg/L and ammonia nitrogen is 8,166 mg/L. 2#: 1 ton; in the U section, COD is 158,930 mg/L and ammonia nitrogen is 1,070 mg/L. 3#: 5 tons; in the M section, COD is 120,000 mg/L and ammonia nitrogen is 1,890 mg/L. 4#: 3 tons; in the T section, COD is 52,600 mg/L and ammonia nitrogen is 740 mg/L. 1) Waste water from the U section: 1 ton; it contains 1.5% solvents such as dichloromethane and furan, 1.2% magnesium chloride, 3% sodium chloride, with a pH of 9. 2) Wastewater from Section N (or M): 1.5% solvents such as toluene and ethyl acetate, 2% ethylene glycol, 22% sodium citrate, 5% sodium sulfate, 6% sodium chloride, pH 6-8. 3) Wastewater from Section T: 1% solvents such as dichloromethane, 15% triethylamine hydrochloride, 10% methanol, 2% organic and inorganic phosphorus, pH 6-9. Wastewater type | Water volume (T/d) | CODCr (mg/L) | Ammonia nitrogen (mg/L) | pH (dimensionless)Production wastewater | 10 | 120,000 | 3,000 | 6–8
Domestic wastewater | 10 | 400 | 25 | 6–8
Table 2-2: Design parameters for effluent quality
Parameter | pH (dimensionless) | CODcr (mg/L) | SS (mg/L) | Ammonia nitrogen (mg/L) | Color intensity (times)
Discharge standards | 6–9 | ≤360 | ≤210 | ≤30 --
Advanced oxidation processes can handle this perfectly; the key is whether the associated costs are acceptable
Additionally, the Fenton advanced oxidation process has average performance
This post was last edited by slll611 on 2016-7-2 23:21. This can be achieved using our evaporation process + integrated wastewater treatment equipment, especially for small volumes of water. Interested in contacting via message within the site
What kind of evaporation process is it? Are there any specific details and information on operating costs?
Could you briefly explain what kind of oxidation process it is? ?
1. Physicochemical pretreatment process for high-concentration saline wastewater: 1) 1 T of wastewater from Unit U plus 3 T of wastewater from Unit T are combined to produce magnesium ammonium phosphate precipitate, thereby removing ammonia nitrogen and phosphorus as part of the pretreatment process； 2) Pretreatment of wastewater from Section N (or M) through 6T evaporation, concentration, and desalination ； 3) The wastewater from the above two pre-treatment steps is mixed together, acid is added to adjust the pH to 2.5, and iron-carbon microelectrolysis catalytic oxidation is carried out. Hydrogen peroxide and ferrous sulfate are then added to the resulting effluent for Fenton catalytic oxidation, after which calcium hydroxide is added to adjust the pH for coagulation and precipitation ； 2. Pretreated wastewater of 10 T + domestic sewage of 10 T – Biological treatment process: 4) Hydrolysis acidification and water/quality adjustment + PUAR pulse anaerobic biological treatment + MBBR/activated sludge combined aerobic biological treatment + sedimentation separation.
Sir, I have a few questions: 1. In the first step, 1 T of wastewater from Unit U and 3 T of wastewater from Unit T are combined to produce magnesium ammonium phosphate precipitate; this process should have limited effectiveness in removing ammonia nitrogen, so it seems unlikely that the ammonia nitrogen levels can meet the requirements for water suitable for biological treatment Is it necessary to increase stripping? 2. For such high levels of dichloroethane and **furan, can microelectrolysis + Fenton ensure that the toxic and harmful substances meet the biochemical water quality requirements? 3. For such high COD, how much can be removed through physical and chemical methods? The biochemical load must be very high. What is PUAR pulse anaerobic biochemistry? How high can the load reach? 4. How is the aerobic biochemical process combining MBBR and activated sludge structured? 5. There is another key issue: after desalination in section N, can the total salt content of the entire system be used for biological treatment? What should be done with the other things that evaporate? ? I hope the expert can give some guidance!
For removing COD and organic matter, Fenton is not as effective as another method; feel free to send a private message for more details. My email address is rtcrop@yahoo.com
1. 1 T of wastewater from Section U plus 3 T of wastewater from Section T result in the formation of magnesium ammonium phosphate precipitate; the removal of ammonia nitrogen in this process depends primarily on the levels of phosphates and magnesium in the wastewater, which can be determined through pilot tests. Determine whether ammonia nitrogen stripping is required based on the situation. 2. For dichloroethane and **furan, under the enhanced microelectrolysis + FENTON process conditions, it is entirely possible to ensure that toxic and harmful substances meet the requirements for biochemical water quality. 3. After desalination in section N, the diluted domestic wastewater is added, and the total salt content of the entire system can meet the requirements for feeding it into the biological treatment process. 4. The evaporated waste salt is treated as hazardous waste. 5. Hydrolytic acidification regulation combined with PUAR pulse anaerobic biotreatment is a extensive-type biological process suitable for high-salt and high-COD loads; it not only accommodates high biological loads but also significantly improves the biodegradability of wastewater. 6. The MBBR/activated sludge combined aerobic biological treatment process is an aerobic biological process suitable for high-salt and high-COD loads, and it cannot be explained simply through a brief introduction.