Dense and thin wastewater separation device used in pre-treatment of wastewater and separation method used by same

A separation device and separation method technology, applied in the sedimentation tank and other directions, can solve the problems of inability to completely separate concentrated sewage and dilute sewage, affecting the application effect, and disturbing the sediment, and achieve the effect of small volume, energy saving and good effect.

Active Publication Date: 2015-07-01
BIOGAS SCI RES INST MIN OF AGRI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, in the actual operation process, the conventional continuous flow sedimentation tank is generally used to separate the thick and thin wastewater, and the continuous flow will disturb the sediment, and the sedimentation effect is poor.
More importantly, the continuous flow cannot completely separate the concentrated sewage from the dilute sewage. When pumping the concentrated sewage, the dilute sewage is easily pumped away, but most of the sediment is not pumped away. At the same time, the upper layer of scum cannot be incorporated into the concentrated sewage.
These factors have seriously affected the practical application effect of "pig farm feces sewage treatment method based on thick and thin separation", and there is an urgent need to develop an effective thick and thin separation device

Method used

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  • Dense and thin wastewater separation device used in pre-treatment of wastewater and separation method used by same

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Effect test

Embodiment 1

[0029] A thick-thin separation device for pre-treatment of wastewater, comprising a cone bucket 1 and a cylinder body 2, the cone bucket 1 is connected to the cylinder body 2, and the cone bucket 1 is connected to the cylinder body 2 to form a sewage treatment chamber, and the cylinder body 2 A feed inlet 3 is provided on the top, and the sewage treatment chamber includes a concentrated sewage chamber formed by the inner cavity of the cone bucket and a thin sewage chamber formed by the inner cavity of the cylinder. The bottom of the cone bucket 1 is provided with a concentrated sewage pump 5. Dilute sewage pump 4.

[0030] A preferred embodiment of the present invention is that the volume of the cone bucket 1 accounts for 10% of the total volume of the cone bucket inner cavity and the barrel inner cavity, and the cone angle 7 of the cone bucket is 60°, but it is not limited to this method.

[0031] Another preferred embodiment of the present invention is that one end of the cy...

Embodiment 2

[0039] The invention mainly includes a cone bucket 1, a cylinder body 2, a feed port 3, a dilute sewage pump 4, a concentrated sewage pump 5, a liquid level gauge 6, and the like.

[0040](1) The cone bucket 1 is located at the lower part of the device, the volume of the cone bucket 1 accounts for 20% of the entire device volume, and the cone angle 7 is 55°.

[0041] (2) The cylinder body 2 is open, and the volume accounts for 80% of the device volume. The upper part of the cylinder body is provided with a feed port 3, and the height difference from the top edge of the cylinder body is 320mm.

[0042] (3) A dilute sewage pump 4 is installed at the bottom of the cylinder to pump the dilute sewage to the dilute sewage anaerobic digestion device. The position of the dilute sewage pump 4 can be adjusted up and down according to the amount of supernatant.

[0043] (4) A concentrated sewage pump 5 is provided at the bottom of the cone bucket to pump the concentrated sewage to the co...

Embodiment 3

[0047] This embodiment is basically the same as the above-mentioned embodiment, the main difference is that the volume of the cone bucket accounts for 30% of the total volume of the inner cavity of the cone bucket and the inner cavity of the cylinder, and the cone angle of the cone bucket is 50°. The volume of the cylinder accounts for 70% of the total volume of the inner cavity of the cone bucket and the inner cavity of the cylinder. The height difference between the feed inlet and the top edge of the cylinder is 300 mm. Further, in the separation method, the time for static precipitation is 1 hour.

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Abstract

The invention discloses a dense and thin wastewater separation device used in pre-treatment of wastewater and a separation method used by the same. The dense and thin wastewater separation device comprises a cone bucket and a barrel, wherein the cone bucket is connected with the barrel, the cone bucket and the barrel are communicated with each other to form a sewage treatment chamber, the barrel is provided with a feed inlet, the sewage treatment chamber comprises a dense sewage chamber formed by the inner cavity of the cone bucket and a thin sewage chamber formed by the inner cavity of the barrel, a dense sewage pump is arranged at the bottom of the cone bucket, and a thin sewage pump is arranged in the barrel. With the separation device and the separation method provided by the invention, a better sedimentation effect is obtained, dense and thin wastewater separation efficiency is improved, and dense sewage is thoroughly separated from thin sewage.

Description

technical field [0001] The invention mainly relates to a thick-thin separation device and a separation method for wastewater pretreatment, belonging to the field of environmental engineering wastewater treatment. Background technique [0002] For high-concentration organic wastewater, such as aquaculture wastewater, alcohol wastewater, pharmaceutical wastewater, food processing wastewater, slaughter wastewater, beer wastewater, etc., biogas fermentation process is generally used for anaerobic digestion treatment to remove most of the organic pollutants and at the same time recover energy— — Biogas. The effluent is used as farmland fertilizer, or discharged up to standard after post-treatment. [0003] On the one hand, some wastewater itself has a low temperature, such as aquaculture wastewater, slaughter wastewater, food processing wastewater, etc. When anaerobic digestion is performed, the effect is poor in winter and heating is often required. However, the concentration ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D21/02
Inventor 邓良伟蒲小东宋立王智勇刘刈
Owner BIOGAS SCI RES INST MIN OF AGRI
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