What to do with the swell hardwood floor. In most cases, hardwood floor hopelessly corrupt, but to minimize the damage all the same it is possible. 

1. Get rid of the source of moisture.
2. Call the master or to dismantle the flooring in the area where it swollen, it will remove the tension and will prevent the further swelling.
3. Do not try to dry floors by means of fan heaters or sharp increase in temperature, only will be worse.

Provide normal fanning, and temperature lift on 3-5 degrees above the usual.
 Well everything, you have made everything, that could, now it is necessary to wait (1-1,5 months) while the hardwood floor will dry up (in house conditions completely it will not dry up), and to break to repair: replacement of the disassembled floor areas, gun-greasing glue places left behind on base, puttying cracks, and, finally, scraping and applying varnish. 

Protect parquet from water.