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CN-224212510-U - Sewage treatment device

CN224212510UCN 224212510 UCN224212510 UCN 224212510UCN-224212510-U

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a sewage treatment device. The anaerobic and aerobic anaerobic treatment device comprises an anaerobic tank, a front anoxic tank, an aerobic tank, a rear anoxic tank and an MBR separation tank which are sequentially communicated, wherein the MBR separation tank comprises a water inlet tank, an MBR membrane tank provided with a plurality of groups of MBR membrane groups and a sludge tank which are sequentially communicated, an inclined plate pipe module used for filtering and separating is arranged in the water inlet tank, and the water inlet tank is communicated with the rear anoxic tank. According to the utility model, the inclined plate pipe module is arranged in the water inlet tank, and the sludge mixed liquid flows through the inclined plate pipe module and then passes through the MBR membrane tank for membrane filtration treatment, so that a part of sludge and suspended matters can be effectively deposited through the arrangement of the inclined plate pipe module, and the suspended matters in the mixed liquid are reduced, thereby improving the feeding efficiency of the subsequent aluminum sulfate medicament, reducing the total phosphorus content of the effluent and simultaneously reducing the cost.

Inventors

  • Liang Tenghe
  • LIANG JIANBIN
  • CHEN ZEBIN

Assignees

  • 广州市净水有限公司

Dates

Publication Date
20260508
Application Date
20250418

Claims (10)

  1. 1. The sewage treatment device comprises an anaerobic tank (1), a front anoxic tank (2), an aerobic tank (3), a rear anoxic tank (4) and an MBR separation tank (5) which are sequentially communicated, and is characterized in that the MBR separation tank (5) comprises a water inlet tank (7), an MBR membrane tank (8) provided with a plurality of groups of MBR membrane groups and a sludge tank (9), wherein an inclined plate pipe module (6) for filtering and separating is arranged in the water inlet tank (7), and the water inlet tank (7) is communicated with the rear anoxic tank (4).
  2. 2. The sewage treatment device according to claim 1, characterized in that a space is provided between the bottom end of the inclined plate pipe module (6) and the bottom of the water intake tank (7).
  3. 3. The sewage treatment device according to claim 2, wherein the inclined plate pipe module (6) is located in the middle of the water inlet tank (7), the lower part of the water inlet tank (7) is communicated with the rear anoxic tank (4), and the upper part of the water inlet tank (7) is communicated with the MBR membrane tank (8).
  4. 4. A sewage treatment device according to claim 3, characterized in that the lower part of the water intake tank (7) is provided with a water intake valve (14), the upper part of the water intake tank (7) is provided with a water outlet valve (15), and the installation height of the water intake valve (14) is lower than the installation height of the water outlet valve (15).
  5. 5. The sewage treatment device according to claim 4, wherein the water inlet tank (7) comprises a sludge layer, a mixed liquid layer, a filter layer and a supernatant liquid layer from bottom to top, the water inlet valve (14) is arranged on the mixed liquid layer, the inclined plate pipe module (6) is arranged on the filter layer, and the water outlet valve (15) is arranged on the supernatant liquid layer.
  6. 6. The sewage treatment device according to claim 5, wherein the aerobic tank (3) is provided with an aerobic reflux pipe (10) communicated with the front anoxic tank (2), and the rear anoxic tank (4) is provided with a rear anoxic reflux pipe (11) communicated with the anaerobic tank (1).
  7. 7. The sewage treatment apparatus according to claim 6, wherein the water intake tank (7) is provided with a sediment circulation pipe (13) communicating with the sludge tank (9), and the sludge tank (9) is provided with a sludge return pipe (12) communicating with the aerobic tank (3).
  8. 8. The sewage treatment apparatus according to any one of claims 1 to 7, wherein the inclined plate pipe module (6) comprises a plurality of inclined pipes, and a plurality of the inclined pipes are parallel to each other and are closely arranged to form the plate pipe module.
  9. 9. The sewage treatment device according to claim 8, wherein the inclined tube has an inclination angle θ of 45 ° to 75 ° with respect to a horizontal plane, and the inclined tube has an inner diameter of 25mm to 50mm.
  10. 10. The sewage treatment apparatus according to claim 8, wherein the inclined tube is internally provided with a smooth round tube, and the inclined tube is externally provided with a regular hexagonal structure.

Description

Sewage treatment device Technical Field The utility model relates to the technical field of sewage treatment, in particular to a sewage treatment device. Background The pollution condition of water resources is increasingly worsened, the water quality characteristics are complex and changeable, and in order to solve the problem that the pollution of point sources and surface sources becomes the subject of water environment protection, especially the pollution sources with small water quantity which are scattered and difficult to collect are urgently needed to be treated by a mobile treatment device. Among the biological treatment technologies, the activated sludge process and the technology developed therefrom are indispensable and important, and among these biological treatment technologies, MBR and oxidation ditch are one of the most main treatment processes for the biological treatment of wastewater. The Membrane Bioreactor (MBR) is a treatment technology combining biological treatment and membrane separation technology, has the advantages of good solid-liquid separation effect, small amount of residual activated sludge (high sludge concentration and long sludge age), no need of a secondary sedimentation tank, better effluent quality, small occupied area and the like, and is an indispensable treatment technology in the current water treatment technology. In the sewage treatment mud-water separation stage, the process dephosphorization effect of the MBR membrane tank is slightly smaller than that of a secondary sedimentation tank, so that the dephosphorization effect of the MBR membrane tank is improved by adding a medicine (using a flocculating agent of aluminum sulfate), and the total phosphorus of the effluent is reduced, but the effect of the flocculating agent is influenced by suspended matters, namely the MLSS concentration in a mud-water mixture is too high, so that the dephosphorization efficiency of adding a dephosphorization agent is influenced, and the medicine consumption is increased. Disclosure of utility model The utility model aims to overcome the defect that the dephosphorization effect is influenced by a dephosphorization flocculant of an MBR membrane tank in the prior art, so that the medicine consumption is high, and provides a sewage treatment device which can effectively reduce sludge suspended matters in a sludge mixed solution. In order to solve the technical problems, the utility model adopts the following technical scheme: The sewage treatment device comprises an anaerobic tank, a front anoxic tank, an aerobic tank, a rear anoxic tank and an MBR separation tank which are sequentially communicated, wherein the MBR separation tank comprises a water inlet tank, an MBR membrane tank provided with a plurality of groups of MBR membrane groups and a sludge tank which are sequentially communicated, an inclined plate pipe module used for filtering and separating is arranged in the water inlet tank, and the water inlet tank is communicated with the rear anoxic tank. The utility model discloses a sewage treatment device, wherein a sludge mixed solution sequentially passes through an anaerobic tank, a front anoxic tank, an aerobic tank and a rear anoxic tank to be treated and then enters an MBR separation tank; through the setting of swash plate pipe module, can effectively deposit some mud and suspended solid, reduce the suspended solid in the mixed solution to improve the throwing efficiency of follow-up aluminium sulfate medicament, thereby reduce the total phosphorus content of play water, also can reduce cost simultaneously. Further, a space is arranged between the bottom end of the inclined plate pipe module and the bottom of the water inlet tank. After the sludge mixed liquid flows through the inclined plate pipe module, the inclined plate pipe module is obliquely arranged, deposited sludge and suspended matters can slide downwards along the pipeline and finally deposit at the bottom of the water inlet tank, and an interval is arranged between the inclined plate pipe module and the bottom of the water inlet tank, so that the deposited sludge and suspended matters can be prevented from being accumulated at the bottom end of the inclined plate pipe, and the blockage is avoided. Further, the inclined plate pipe module is located in the middle of the water inlet tank, the lower portion of the water inlet tank is communicated with the rear anoxic tank, and the upper portion of the water inlet tank is communicated with the MBR membrane tank. The water inlet tank is used for water inlet from the lower part and water outlet from the upper part, the sludge mixed solution, deposited sludge and suspended matters are all positioned at the lower part of the water inlet tank, and the liquid obtained after filtration and separation by the inclined plate pipe module is positioned at the upper part of the water inlet tank, so that the concentration of the sludge suspended matters entering the MBR memb