How do you construct a sprinkler system with the pool's backwash discharge?
I am in the process of developing the same idea. My thoughts are to get rain water collection barrels and fill them with the backwash and add pump that is fed by the barrels to generate enough pressure for a few sprinlkers.
Is there harmful material in Russian gp5 gas mask filters?
Well nobody is certain, but people have taken them apart and didn't find anything. So I don't believe they have asbestos, but they may be toxic in some other way.
DON'T USE the big coffee-can style masks because they do contain asbestos. But the standard mask should be fine. If you still don't want to use them, you can buy the Swiss 40mm thread gas mask filters.
A leak in a sprinkler system can lead to water damage, mold growth, and increased water bills. To detect a leak, regularly check for wet spots, mold, or a drop in water pressure. To repair it effectively, locate the leak, shut off the water supply, and replace the damaged part or seal the leak with waterproof tape or sealant.