I would like to ask fellow sea enthusiasts about methods for treating organic matter in industrial waste salts
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Wastewater from the production workshop is treated via triple-effect evaporation to recover salts. The recovered waste salts contain organic substances, as well as sodium and potassium salts. Currently, these waste salts are directly fed into a rotary kiln incinerator for treatment at a temperature of around 250°C. During this process, a large amount of flue gas and tar is generated, resulting in poor treatment efficiency. I would like to ask if there are any better treatment methods or equipment available?
The stupidest way is to treat it as hazardous waste. Have someone take it away. Affordable. But a very large amount is needed. If equipment is used to dispose of these industrial salts, the cost will be very high.
The temperature can be raised to above 1,600 degrees; no dioxin pollution is generated
The idea now is to remove the organic substances, ensure that the salts do not melt, and then transfer them as hazardous waste; since it’s a mixed salt, purification is not considered either
Do you mean that for these industrial salts, the sodium and potassium content needs to be removed so that they become high-purity industrial salts, and then they can be treated as hazardous waste? I don’t know how much there is; otherwise I’ll check among the hazardous waste to see if there’s anything that can be taken away for you right away. But you need to provide the component parameters. This way you can also save on equipment.
It is possible to consider destroying the organic matter in the wastewater before multi-effect evaporation, in order to ensure optimal concentration results. One of our wastewater streams is in this situation, and we are currently carrying out pilot tests to improve this process
The process equipment for implementing this method consists of a feeder, a flash dryer, an air-flow tubular pre-decomposer, a fluidized-bed carbonization furnace, an air-heating incinerator, a primary collector, a secondary collector, a recirculation fan, a blower, a waste heat boiler, a scrubber tower, a piping system, and a control system； The waste salt is fed by a feeder into a flash dryer for drying, in order to remove the moisture from it ； The dried waste salt is captured by a primary collector and then sent to a gas-flow tubular pre-decomposer for thermal decomposition ； The pre-decomposed waste salt is captured by a secondary collector and then sent to a spouted bed carbonization furnace for carbonization treatment; the resulting carbonized salt is discharged from the furnace as a product ； Meanwhile, the exhaust gas resulting from the drying of the material in the flash dryer passes through a primary collector and is then sent by a circulation fan to an air-heated incinerator for high-temperature combustion ； Most of the hot air generated by the air-heated incinerator is sent to the spouted bed carbonization furnace via a blower, providing the heat required for the carbonization of the material; the remaining air undergoes heat exchange in a waste heat boiler, and after being washed in a scrubbing tower, it is released into the atmosphere ； The exhaust gas generated after the carbonization of the materials in the fluidized bed carbonization furnace enters the gas-flow tubular preheater, providing the heat required for the pre-decomposition of the materials in the gas-flow tubular pre-decomposer ； The exhaust gas resulting from the pre-decomposition of the material in the gas-flow tubular pre-decomposer passes through a two-stage collector before entering the flash dryer, where it provides heat for the drying of waste salts.