Polymeric ferric sulfate feeding device for sewage treatment

Abstract

The invention discloses a polymeric ferric sulfate feeding device for sewage treatment. The polymeric ferric sulfate feeding device comprises a dissolving tank, a chemical adding pump and a jet device, wherein a chemical adding hopper is arranged above the dissolving tank; a stirring shaft is arranged in the middle of the bottom of the dissolving tank; one end of the stirring shaft is connected with a stirring motor; the stirring motor is connected with a support; the support is fixed at the bottom of the dissolving tank; the other end of the stirring shaft penetrates through the support to be arranged inside the dissolving tank; stirring blades are arranged in the middle of the part, arranged inside the dissolving tank, of the stirring shaft; a rotary disk is arranged at the bottom of the stirring shaft; a plurality of stirring teeth are arranged below the rotary disk; a discharging pipe is arranged below the dissolving tank; the jet device is mounted on the discharging pipe; the suction chamber of the jet device is connected with the discharging pipe; a nozzle of the jet device is connected with the chemical adding pump through a delivery pipe; the chemical adding pump is connected with a water source; a diffusion pipe of the jet device is connected with a to-be-treated sewage tank through a delivery pipe. According to the polymeric ferric sulfate feeding device for sewage treatment, the polymeric ferric sulfate dissolving difficulty is avoided, and the problem that the chemical adding pump is in direct contact with a medicament to cause corrosion and inconvenience for maintenance is avoided.

Description

technical field [0001] The invention relates to the technical field of sewage treatment equipment, in particular to a polyferric sulfate feeding device for sewage treatment. Background technique [0002] Polymerized ferric sulfate is a new type, high-quality, high-efficiency iron-salt non-extreme molecular flocculant, which has excellent coagulation performance, dense alum flowers, fast settling speed, excellent water purification effect, good water quality, and does not contain aluminum, chlorine and heavy metal ions, etc. Harmful substances, and no water phase transfer of iron ions, non-toxic, harmless, safe and reliable. It has the functions of removing turbidity, decolorization, deoiling, dehydration, sterilization, deodorization, algae removal, COD, BOD and heavy metal ions in water. The raw water purification effect is particularly good, so it is widely used in the sewage treatment industry. [0003] When polymeric ferric sulfate is used, the polymeric ferric sulfate...

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Problems solved by technology

[0003] When polymeric ferric sulfate is used, the polymeric ferric sulfate is prepared into a solution first, and then the dosing pump is used for dosing. When the current feeding device is preparing the polymeric ferric sulfate solution, the uneven distribution of polymeric ferric sulfate in the water often forms flocs , Difficulty in dissolving, sedimentation at the bottom of the dissolution tank, resulting in waste of polyferric sulfate, affecting the preparation effect of polyferric sulfate solution, which cannot be used well for subsequent use; and when dosing with a dosing pump, due to the The iron solution is corrosive, and the dosing pump solution is corroded and damaged, which affects the stable operation of the entire sewage treatment system. In addition, it takes a long time to replace the damaged dosing pump and is inconvenient to disassemble.

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