The effluent SS of this project is required to be less than 400 mg/L. I have found some water quality components of existing wastewater provided by patent companies, but due to the reduction of NaOH consumption in this project, the salt content of wastewater is expected to reach the expected value.
Please find the wastewater from PO/MTBE production plant. The results are as follows:
The only unexpected result is the detected sample 2/22/20 1 1 chloroform.
This is the only sample detected. Whether it is a known error, it is not in this column at this time.
Sodium:
The high sodium content is due to the corrosive injection of methyl formate used to neutralize MTBE reactor materials.
The factory uses about 5500 lbs/hour 17 wt% sodium hydroxide = > 935 lbs/hour sodium hydroxide = > 540 lbs/hour sodium.
The amount of waste water is about. 6 1000 lb/h
The content of sodium is 540/61000 *1e 6 = 8800 ppm.
This has something to do with. 8000 ppm (average)
Note: ~ 200 ppm sodium hydroxide is the required pH value 1 1.8 for production.
Dissolved solids:
The corrosive neutralization of MeF produces sodium formate (NaCHO2).
At the level of 8800 ppm, sodium acid is similar to 1550 lb/hour.
When the sewage flow rate reaches 6 1000 lb/hour, the sodium salt dissolved in water will reach an approximate amount. 25 μ g/L
This is about in-line and analytical findings. 23 g/L dissolved solids.
2,
Sludge treatment and sewage treatment in oil refinery
The main pollutants in the water are:
Ii) No waste water
Source: bottom of wastewater stripper (bottom of wastewater stripper)
Flow rate (flow rate): 32,343 kg/hour
Composition (composition):
The composition (composition) is expected to be normal weight%
Water 98.98
Formic acid 0.08
DPG 0. 17
Sodium (sodium) 0.20-0.30
PG 75.0 ppm
Methanol 3. 1 ppm
EGME 13.8 ppm
Treatment method: pump in OSBL sewage for treatment.
Iii) Water washing from ammonia scrubber
Source: bottom of ammonia scrubber.
Flow: 59336 kg/batch (6 hours/day). 65438+ 0 batches per day)
Composition:
Normal weight% of ingredients
Water 99.47
Ammonia 0.3 1
Such as 0.23
Treatment method: pump all kinds of wastewater to OSBL for treatment (paint remover in wastewater is mixed with paint remover wastewater).
Analysis of wastewater and water from ammonia scrubber (total * * *):
Chemical oxygen demand: 22187mg/L.
TDS 23.0/L (plants were observed in the port)
6-9 μ g/L (expected in L- plant)
The pH value is 1 1.8.
Biochemical oxygen demand 8000 mg/l
Temporary 38 degrees Celsius
Or this:
-1. Water quality requirements of high ammonia nitrogen wastewater: the SS requirement of the effluent of this project is less than 400 mg/L. I have found some existing wastewater quality components provided by patent companies, but due to the reduction of sodium hydroxide consumption in this project, the salt content of wastewater is expected to reach the expected value. Please find the wastewater from Bao/MTBE production facilities, and the results are as follows: The only result in chloroform samples is not expected to be 2 /22 /20 1 1. This is the only sample that found it. It is not yet known whether this is a mistake. Sodium: The high sodium content is due to the injection of caustic soda to neutralize methyl formate in reactor materials. Our factory uses ~5500 lbs/hour 17wt% sodium hydroxide = > 935 lbs/hour sodium hydroxide = > 540 lbs/hour, the amount of sodium wastewater is about 6 1000 lbs/hour, and the sodium content is 540/61000 */kl. Note: It takes 165438 to produce 200 ppm sodium hydroxide. When sodium formate (nacho2) is produced at the level of 8800 parts per million, the equivalent of sodium formate is 1550 lb/hour, the flow rate of sewage is 6 1000 lb/hour, and the dissolved salt of sodium formate is about 25g/liter, which is consistent with the analysis. It is found that the dissolved solid is about 23g/liter. 2. The main pollutants of sludge treatment and sewage treatment water in refinery are: 2) Stripping wastewater source (source): bottom of wastewater stripper (bottom of wastewater stripper) Flow rate (flow rate): 32,343 kg/hour Composition (composition): composition (expected normal% water 98.98 formic acid 0.08 glycerol diphosphate 0. 17 sodium (sodium). Kloc-0/ ppm ethylene glycol methyl ether 66kg/ batch (6 hours/day, about 1 batch per day): part of expected normal% water 99.47 ammonia 0.3 1, such as 0.23 Disposal method: osbl wastewater treatment (mixed stripping wastewater is stripped from sewage). Analysis of wastewater and water purification ammonia scrubber (combined): chemical oxygen demand: 22 187 mg/.