Patent ID: 11926538
Assignee: DALIAN UNIVERSITY OF TECHNOLOGY
Field: Chemical engineering (Chemistry)
Classification: CPC C  B  Y | IPC B  C

Claim 5:
6. A method of using the wastewater treatment apparatus based on the hydrate-based water vapor adsorption according to claim 1, comprising the following steps:
step 1: wastewater intake: conveying wastewater in the wastewater storage tank into the reactor until a volume of the wastewater conveyed reaches a volume of wastewater to be treated in one batch;
step 2: gas introduction: introducing the gaseous hydrate former at a high pressure in the gas cylinder into the reactor until a pressure in the reactor reaches a pressure required for wastewater treatment;
step 3: reaction: reducing a temperature of the cooling wall surface to a temperature required for the reaction, and turning on the magnetic stirrer to accelerate an evaporation of the wastewater; rising the water vapor and the condensed water formed during the evaporation reacting with the gaseous hydrate former to form a hydrate crystal as a solid on the cooling wall surface, and promoting a continuous evaporation of the wastewater by consuming the water vapor through the reaction;
step 4: separation: as the hydrate crystal formed on the cooling wall surface continuously accumulates and thickens, turning on the wall scraping device to scrape off the hydrate crystal formed on the cooling wall surface; periodically turning on and off the wall scraping device by the computer control system to periodically scrape off the hydrate crystal formed on the cooling wall surface until one batch of the wastewater treatment is completed;
step 5: decomposition: the hydrate crystal which is scraped off falling to the bottom of the hydrate formation and decomposition chamber of the reactor, and the hydrate crystal being rapidly decomposed into a gas and fresh water at normal temperature; collecting the gas released from the decomposition of the hydrate crystal to the gas recovery device, and recycling the gas after purification; the fresh water obtained through the decomposition of the hydrate crystal flowing to the fresh water tank; conveying remaining concentrated wastewater at the bottom of the wastewater evaporation chamber of the reactor to the waste liquid tank; and
step 6: cycling: after the hydrate crystal is completely decomposed, the one batch of the wastewater treatment is completed, closing all valves, and repeating the steps 1 to 5 to realize continuous wastewater treatment.