Strong-flocculation ultrafiltration membrane water purification treatment method for natural flowing water

The invention relates to a strong-flocculation ultrafiltration membrane water purification treatment method for natural flowing water, which is characterized by comprising the following steps: S1, natural flowing water and a flocculant are added into a circulation flocculation box, a sludge discharge pipe is arranged at the bottom of the circulation flocculation box, a guide cylinder is arranged in the middle of the circulation flocculation box, and a lifting stirrer is arranged in the guide cylinder; a flocculation liquid outlet pipe is arranged in the middle of the circulation flocculation box; the natural flowing water and the flocculating agent are fully mixed in the circulation flocculation box to form a flocculating liquid; s2, the flocculation liquid enters a self-cleaning filter after being pressurized by a booster pump and then enters an ultrafiltration membrane purifier from the top of the ultrafiltration membrane purifier, and purified water obtained after filtration flows out of a purified water p