Recurrence is possible, as documented here. Here is the example given by the documentation:
task add Pay the rent due:1st recur:monthly until:2015-03-31
In your case, to create a task that recurs daily starting today:
task add Pay the rent recur:daily due:eod
To create a task that recurs every other day, use any of the duration formats (we can make this one due tomorrow):
task add Pay the rent recur:2d due:tomorrow
Note that `tomorrow` will actually evaluate to `eod`, and so using something more explicit like `wednesday` (start of Wednesday) may be more appropriate. You can also, with some limitations, use durations in the due date (in this case, `due:2d`).
Note also the limitations of recurrence in Taskwarrior.