Negative-pressure internal circulation reactor and method for treating sewage by utilizing reactor

A reactor and internal circulation technology, which is applied in the field of negative pressure internal circulation reactors, can solve the problems of poor low-temperature operation, complicated operation management, and high cost, and achieve the effects of short cycle period, simple operation management, and small footprint

Inactive Publication Date: 2013-02-13
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the problems of poor low-temperature operation effect, complicated operation management and high cost of existing methods when treating sewage in small cities and towns in cold regions, and provides a negative pressure internal circulation reactor and a method for treating sewage by using the reactor

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  • Negative-pressure internal circulation reactor and method for treating sewage by utilizing reactor

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specific Embodiment approach 1

[0016] Specific implementation mode one: combine figure 1 Describe this embodiment, the negative pressure internal circulation reactor of this embodiment comprises a tank body 1, a water inlet pipe 2, an outlet weir 3, an outlet pipe 4, a vertical partition 5, a communication hole 6, a transverse partition 7, an aeration device 8, Pipeline 9, air pump 10 and mud outlet 11, the upper part of tank body 1 is cylindrical, the lower part of tank body 1 is conical, and the inside of the upper cylindrical area of ​​tank body 1 is provided with vertical partition 5, vertical partition 5 is provided with a communication hole 6 in the center, and the vertical partition 5 divides the upper cylindrical area of ​​the tank body (1) into an aeration area 12 and a sedimentation area 13, and the lower conical area of ​​the tank body 1 is a sludge concentration area 14. The horizontal partition 7 is semicircular, and is horizontally arranged at the junction of the aeration zone 12 and the sludg...

specific Embodiment approach 2

[0017] Specific implementation mode two: combination figure 1 This embodiment is described. The difference between this embodiment and the first embodiment is that the diameter of the hole on the diaphragm 7 is greater than 50 mm, and the opening ratio of the diaphragm 7 is 40% to 60%. Others are the same as in the first embodiment.

[0018] In this embodiment, the porosity is the percentage of the area of ​​holes in the total area of ​​the diaphragm.

specific Embodiment approach 3

[0019] Specific implementation mode three: combination figure 1 Illustrate this embodiment, adopt specific embodiment one to be applicable to the method for the low-temperature sewage treatment device treatment sewage of small town, carry out according to the following steps:

[0020] The sewage first enters the hydrolysis and acidification reaction device, stays for 7-9 hours, and then exits the water, enters the aeration zone 12 of the low-temperature sewage treatment device suitable for small towns through the water inlet pipe 2, and opens the aeration device 8 at the same time, after the hydraulic retention time is 5-7 hours , the remaining sludge is discharged from the mud outlet 11, and the supernatant is discharged from the outlet pipe 4 through the outlet weir 3, and the sewage treatment is completed.

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Abstract

The invention relates to a negative-pressure internal circulation reactor and a method for treating sewage by utilizing the reactor, which solves the problems of poor low-temperature operation effect, complex operation management and high cost when the sewage of a small town in a cold region is treated in the prior art. The negative-pressure internal circulation reactor comprises a tank body, a water feeding pipe, a water discharge weir, a water discharging pipe, a vertical partition plate, a communication hole, a transverse partition plate, an aerating device, pipes, an air pump and a mud discharging opening. The method for treating the sewage by utilizing the reactor comprises the following steps: 1, the sewage firstly enters a hydrolysis acidification reaction device, and discharged water enters an aerating region of a low-temperature sewage treatment device through a water discharging pipe to form muddy water mixture; and 2, the muddy water mixture enters a sediment region so that mud and water are separated, the mud is precipitated in a mud concentration region and is refluxed into the aerating region through a hole of the transverse partition plate under negative pressure generated in an aeration process, the residue mud is discharged from the mud discharging opening, and supernatant is discharged from the water discharging pipe so that above process is circulated, and continuous operation is carried out. The negative-pressure internal circulation reactor and the method for treating the sewage by utilizing the reactor, disclosed by the invention, are applied to the sewage treatment field.

Description

technical field [0001] The invention relates to a negative pressure internal circulation reactor and a method for treating sewage by using the reactor. Background technique [0002] Sewage from small towns in cold regions has a small water volume (1000-5000m 3 / d), the water quality and quantity fluctuate greatly, and the low water temperature lasts for a long time in winter. It is difficult for the existing sewage treatment process to meet the corresponding treatment requirements. SBR (Sequenced Batch Activated Sludge Process) sewage treatment process is an intermittently operated activated sludge treatment process, which is characterized by flexible operation and impact load resistance. The SBR method has the following disadvantages when dealing with small town sewage in cold regions: 1. It cannot operate continuously, amplifies the fluctuation of water quality and quantity, and makes the effluent water quality worse; 2. Although the existing improved SBR method (such as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30
Inventor 祁佩时吴迪刘云芝
Owner HARBIN INST OF TECH
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