Urgent delivery within 300 miles: issue with wastewater stripping, very urgent! ! ! ! !

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Urgent delivery within 300 miles: issue with wastewater stripping, very urgent! ! ! ! ! It is a wastewater stripping unit that was originally designed for pressure-side stripping using a single tower; its designed processing capacity is 45 T/H. Under normal operation, the top and bottom pressures and temperatures of the tower are 0.5 and 0.55 MPa respectively, and 40 and 160 degrees respectively. The cold and hot feed streams have capacities of 6 T/H and 39 T/H respectively, with about 2.7 tons being extracted from the side stream at a temperature of 155 degrees; after the first stage of cooling, the temperature drops to around 130 degrees (with room for adjustment). The steam consumption is 7 T/H. The raw materials containing ammonia nitrogen and sulfur are 5,000 and 4,000 respectively; the water fed into the tower is 14,000, while the purified water output is 250 with a ammonia nitrogen content of 5. Recent renovations have involved replacing the tray sheets, the reboiler, some heat exchangers, and certain pipelines, as well as upgrading the DCS control system. The redesigned processing capacity is 65 T/H. Under normal operation, the tower’s top and bottom pressures and temperatures remain at 0.5 and 0.55 MPa and 40 and 160 degrees respectively. The cold and hot feed streams now have capacities of 13 T/H and 61 T/H respectively, with about 9 T/H being extracted from the side stream at a temperature of 155 degrees; after the first stage of cooling, the temperature is around 125 degrees. Steam consumption is 9 T/H. The quality of the purified water produced has an ammonia nitrogen content of 100 and a sulfur content of 20. Ammonia nitrogen, sulfur: Raw water – 7000; 3000. Water entering the tower – 20000; 4000. Purified water – 100; 20. The actual operating conditions after the modification are as follows: Processing capacity is 45 T/H. The pressure and temperature at the top and bottom of the tower during normal operation are 0.5 and 0.55 MPa respectively, and 40 and 160 degrees respectively. The flow rates of cold and hot feed waters are 5.5 T/H and 39.5 T/H respectively. Approximately 2.7 T/H of material is withdrawn from the side line, at a temperature of 155 degrees; the temperature after the first stage of cooling is around 140 degrees (no further reduction is possible). Steam consumption is 19 T/H. Ammonia nitrogen, sulfur: Raw water – 5000; 3000. Water entering the tower – 14000; 4000. Purified water – 250; 5. The design team states that: 1) There is a problem with the steam flow meter (but our instrumentation staff found no abnormalities after checking); 2) The amount of material withdrawn from the side line is too small, which is why the product quality does not meet the design specifications (the valves for cooling the raw water are fully open, but the temperature cannot be reduced any further. Increasing the amount of material withdrawn from the side line leads to the presence of water in the stream). At present, the problem with the steam meter cannot be resolved, and the product quality issue also cannot be addressed for now. Is there anyone who is proficient in this area who can help think of a solution?