Method and system for adjusting quality of wastewater detected by marine low-pressure boiler

The invention belongs to the field of marine water treatment, and particularly discloses a marine low-pressure boiler detection wastewater quality adjusting method and system.The method comprises the following steps that S1, the pH value of wastewater, pH wastewater and the phosphate radical value are monitored, and it is calculated that no free hydroxyl exists in the pH value and after the free hydroxyl is removed from the pH value; s2, determining a wastewater treatment mode, emptying the wastewater when the pH value of the wastewater is greater than or equal to 7 and less than or equal to the pH value and free hydroxyl does not exist, and starting S5; when the pH value of the wastewater is greater than or equal to 1 and less than 7, respectively finishing S3 and S5; when the pH of the wastewater is greater than the free hydroxyl and less than or equal to 11, respectively finishing S4 and S5; s3, injecting a sodium carbonate solution into the wastewater to be treated and detected until the pH value of the w