Efficient and environment-friendly sedimentation tank for sewage treatment

Abstract

The invention discloses an efficient environment-friendly sewage treatment sedimentation tank which comprises a shell, a sedimentation tank is arranged at the upper end of the shell, a stirring motor is mounted at the lower end of the shell, the tail end of an output shaft of the stirring motor extends into the sedimentation tank and is fixedly connected with a rotating rod, and a plurality of stirring rods are arranged on the outer wall of the rotating rod in the axial direction of the rotating rod. Telescopic plates are arranged on the inner walls of the left side and the right side in the precipitation tank, the telescopic ends of the two telescopic plates are jointly and fixedly connected with a filter screen, and the left side and the right side of the filter screen are elastically connected with the inner walls of the left side and the right side of the precipitation tank through third springs. When the sedimentation tank is used, dripping of sewage on the filter screen and impurities easy to wrap water is accelerated through shaking of the filter screen and extrusion of the impurities easy to wrap water, the falling speed of a flocculating agent is delayed through airflow, the adsorption efficiency of the flocculating agent is improved, meanwhile, bubbles are punctured through a pricking needle, impact force of bubble explosion is matched with stirring, and the flocculation effect of the flocculating agent is improved. The adsorption effect of the flocculating agent is further improved.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a sedimentation tank for high-efficiency and environment-friendly sewage treatment. Background technique [0002] Sedimentation tank is a structure that uses sedimentation to remove suspended solids in water, equipment for purifying water quality, and uses natural precipitation or coagulation sedimentation of water to remove suspended solids in water. In the sedimentation tank, the sedimentation effect is determined by the flow rate of the water in the sedimentation tank and the residence time of the water in the tank. However, the existing sedimentation tank still has the following problems when it is used: [0003] When the existing sedimentation tank is used, the wastewater is generally passed into the sedimentation tank first, and the impurities in the sewage that are easily covered with water are filtered through the filter screen, and then the flocculant is added f...

AI Technical Summary

Problems solved by technology

[0003] When the existing sedimentation tank is in use, the waste water is generally passed into the sedimentation tank first, and the impurities in the sewage that are easy to coat the water are filtered through the filter, and then the flocculant is added for precipitation. This method makes the sewage During the filtration process, for some impurities with high viscosity and easy to coat water, the internal water cannot enter the sedimentation tank immediately. At the same time, when the filter is poured into the sewage, part of the sewage will adhere to the filter, resulting in subsequent During the sedimentation process, the sewage on the filter screen slowly drips into the sedimentation tank, which affects the sedimentation effect of the sewage in the sedimentation tank. After adding the flocculant, the flocculant will first purify the sewage from top to bottom, and then The more impurities adsorbed, the faster the flocculant and impurities will drop, which will reduce the effect of flocculants to adsorb impurities and affect the sedimentation effect. Therefore, how to solve this problem reasonably is what we need to consider

Images