Flocculation and bacteria inhibition water treating agent

The invention discloses a flocculation and bacteria inhibition type water treating agent, prepared from a flocculant and a slow-release flocculant and by the following preparation steps: synthesizing3-chloro-2-hydroxypropyl trimethylammonium chloride as an etherifying agent and starch under an alkaline condition to prepare the flocculant; coating the flocculant with soluble cellulose by adoptinga coating method, thus obtaining a slow-release flocculant; taking the flocculant and the slow-release flocculant, and mixing evenly to obtain the water treating agent. The water treating agent has the beneficial effects that super flocculation and bacteria inhibition properties are achieved; after being added into sewage, the water treating agent can play a role, the usability of the agent is improved, agent adding equipment is simplified, and the use cost is lowered; the water treating agent is biodegradable and environmentally friendly, the production cost is very low, the water treatment cost is lowered, secondary