What causes the total phosphorus monitoring to exceed the standard in sewage treatment

1. Reasons for excessive total phosphorus 1. Total phosphorus in purified water is too high (water inflow is unstable) 2. Phosphorus accumulating bacteria in the aerobic section cannot absorb a large amount of soluble phosphorus, resulting in poor sludge discharge and unsatisfactory sedimentation effect. Increasing the reduction potential of the secondary settling tank increases, resulting in the release of phosphorus, and the phosphorus removal effect will be unsatisfactory, and the total phosphorus will exceed the standard. If the sludge concentration is high, increase the sludge discharge. 2. Solution to total phosphorus exceeding the standard 1. Add phosphorus removal agent at the back end to solve it. After biochemical treatment in domestic sewage plants, phosphorus generally exists in the form of orthophosphate. Iron salts, aluminum salts, phosphorus removal agents, etc. have all effects on phosphorus Great removal. 2. Adjust the biochemical treatment effect and improve the biochemical removal rate by adjusting a series of factors such as microbial nutrient ratio, DO value, and sludge concentration. 3. Add sewage treatment process equipment to further treat total phosphorus. 4. Suggestions for micro-point environmental protection In general, there are three solutions to the excessive total phosphorus, which need to be selected according to the actual situation. The latter two methods are complicated to operate and cost high, and are suitable for high-concentration total phosphorus treatment. Phosphorus agent saves cost and is easy to operate. It is suitable for removing medium and low concentrations of total phosphorus. Generally, the previous two methods cannot completely reduce phosphorus to the standard, so it should be used together with phosphorus removal agent.