NOVELTY - Laver processing using a dewatering machine under water circulation to produce a beverage involves setting water outlet of laver processing machine into a water distributing pool, such that when diverter tank water level is higher than water outlet, flow rate at water outlet automatic adjusting valve is opened, and water flows to the reservoir, and water is pumped to dried seaweed processing machine through a water pump, and when circulating quantity reaches a set amount, the automatic adjusting valve is closed, and the water is discharged from the water outlet.    USE - For dewatering processing of laver (i.e. dried purple seaweed) to produce a beverage and producing feed or fertilizer from the dried purple seaweed waste residue obtained after filtration (claimed).    ADVANTAGE - The method saves water resource thus reduces production cost and provides economic profit. It avoids waste water pollution to environment as it avoids the laver processing discharge of organic waste water pollution to the environment. Using circulating water enables production of beverage for enterprise and creates new economical benefits. The water processing filtering provides laver waste residue that can be used as feed or vegetable fertilizer. The whole process is eco-friendly and provides important ecological benefits.    DETAILED DESCRIPTION - Laver (seaweed) processing using a dewatering machine under circulation of water, to produce a beverage involves 1) setting water outlet of laver processing machine into a water distributing pool, such that when the diverter tank water level is higher than the water outlet, the flow rate at the water outlet automatic adjusting valve is opened, and water flows to the reservoir, and water is pumped to dried seaweed processing machine through a water pump, and when the circulating quantity reaches a set amount, the automatic adjusting valve is closed, and the water is discharged from the water outlet; and 2) sieving and filtering discharged water into ultra-temperature instantaneous sterilizer for sterilizing at 115 plus minus 2 degrees C for 3-5 s followed by putting into a storage tank, where other raw materials for the beverage are added followed by filtering and filling the beverage using a filling machine. The dried purple seaweed waste residue obtained after filtration is used as feed or fertilizer.