Method and apparatus for adjusting hardness of outflow water from water softening device and electronic device

A computer program product, having computer programs, wherein the computer programs, when executed by a processor, cause the processor to perform a method for adjusting hardness of outflow water from a water softening device, which includes:

• determine, in response to a hardness adjustment request for the outflow water, target hardness of outflow water corresponding to the hardness adjustment request for the outflow water;
• determine a water mixing ratio of soft water to raw water based on the target hardness of outflow water;
• adjust an opening degree of a water mixing unit of a water softening device based on the water mixing ratio;
• obtain current hardness of outflow water from the water softening device;
• and
• determine an opening degree compensation value based on a difference between the current hardness of outflow water and the target hardness of outflow water, and further adjust the opening degree of the water mixing unit based on the opening degree compensation value;
• wherein the water mixing unit is configured to control the mixing of raw water and soft water in the water softening device.