Superheated steam plant (3T/D) - Hazardous waste slag salt

Cost analysis: 50T/ day waste salt

The COD is 19,2509 mg/kg, the content of Na2SO4 is 65-68%, and the water content is 5-9%

(1) In situ oxidation cost of waste salt: 420 yuan /T

(2) Purification cost of salt: 30 yuan /T

Income from resource utilization of waste heat and salt is not calculated for the time being:

① Steam/heat conduction oil ② salt recovery

Total operating cost: 420+30=450 yuan /T (waste salt)

Economic benefit: (waste salt 50T/ day)

(1) The market disposal cost of high concentration salt is about 3000-6000 yuan/ton; ② The disposal cost of the device is about 450 yuan/ton;

(3) According to the treatment capacity of 50T/ d, the waste salt needs 150-300,000 yuan per day for market disposal, but only 22,500 yuan per day for disposal using this device;

To sum up, it saves 127,500 to 277,500 yuan for the enterprise every day, and creates benefits for the enterprise of about 42.07 million to 91.57 million yuan every year (calculated in 330 days). The investment cost can be recovered in 1 year and good economic benefits have been created.

Lanlv Hazardous Waste Engineering Center imported a set of 3T/D carbonization device from abroad in 2016. It is used to test the carbonation and cracking data of various hazardous waste salts and organics for the design of Blue Green Company and overseas research team.