Aerobic granular sludge reactor for treating low-temperature sewage and water treatment method thereof

An aerobic granular sludge and reactor technology, applied in water/sludge/sewage treatment, biological water/sewage treatment, chemical instruments and methods, etc., can solve the problem of poor start-up and stable operation performance, low-temperature activated sludge bulking , poor performance of aerobic sludge, etc., to achieve the effects of stable operation, stable effluent quality and low operating costs

Inactive Publication Date: 2010-04-28
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of poor start-up and stable operation performance of the aerobic granular sludge reactor under low temperature conditions, poor performa

Method used

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  • Aerobic granular sludge reactor for treating low-temperature sewage and water treatment method thereof
  • Aerobic granular sludge reactor for treating low-temperature sewage and water treatment method thereof
  • Aerobic granular sludge reactor for treating low-temperature sewage and water treatment method thereof

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specific Embodiment approach 1

[0009] Specific implementation mode one: combine Figure 1 ~ Figure 2 Describe this embodiment, an aerobic granular sludge reactor for treating low-temperature sewage in this embodiment includes a water inlet tank 1, a water inlet pipe 11, a water inlet pump 2, an outlet solenoid valve 3, an outlet pipe 12, an outlet tank 4, a reaction The main body of the reactor, the air compressor 7, the aeration head 8 and the inlet pipe 13, the main body of the reactor is composed of the riser 5 and the downcomer 6, the riser 5 and the downcomer 6 are coaxially set from the inside to the outside, and the The bottom of the riser 5 is provided with an aeration head 8, and the aeration head 8 communicates with the air compressor 7 outside the reactor main body through the air inlet pipe 13, and the bottom of the downcomer 6 communicates with the bottom of the riser 5, The top of the descending pipe 6 communicates with the top of the ascending pipe 5, one end of the water inlet pipe 11 commun...

specific Embodiment approach 2

[0010] Specific implementation mode two: combination figure 1 To describe this embodiment, a plurality of connection holes 10 in this embodiment are opened at 1 / 2 the height of the riser 5 from the bottom of the reactor main body. Such setting shortens the start-up time of the aerobic granular sludge reactor under low temperature conditions, and the granular sludge operates stably under low temperature conditions. Other compositions and connections are the same as in the first embodiment.

specific Embodiment approach 3

[0011] Specific implementation mode three: combination figure 1 The present embodiment will be described. In this embodiment, the ratio of the height of the riser pipe 5 to the inner diameter of the riser pipe 5 is 10, and the ratio of the height of the descender pipe 6 to the inner diameter of the descender pipe 6 is 10. Such setting increases the stability of the operation of the aerobic granular sludge reactor under low temperature conditions. Other compositions and connections are the same as those in Embodiment 1 or Embodiment 2.

[0012] Specific implementation mode four: combination figure 1 To illustrate this embodiment, the aerobic granular sludge reactor of this embodiment is further provided with a programmable controller 9, and the programmable controller 9 is connected to the water outlet solenoid valve 3, the air compressor 7 and the water inlet pump 2 respectively. With such setting, the operation period of the reactor and the time of water inflow, aeration, s...

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Abstract

The invention relates to an aerobic granular sludge reactor for treating sewage and a water treatment method thereof, in particular to an aerobic granular sludge reactor for treating sewage and a water treatment method thereof. The invention solves the problems that the aerobic granular sludge reactor has poor performance in start-up and stable operation, the aerobic sludge has poor properties and the sludge is prone to expansion at low temperature under the existing low-temperature conditions. The aerobic granular sludge reactor of the invention is characterized in that a riser thereof is co-axially sleeved with a downcomer thereof; an aerator is arranged at the bottom of the riser and communicated with an air compressor; a water outlet pipe is mounted at he height position which is 2/5-3/5 of a reactor body; a connecting hole is formed at the height position which is1/4-3/4 of the reactor body from the bottom thereof; and the ratios between the height and the inner diameter of the riser and the downcomer are both 9-15. The water treatment method of the invention mainly comprises the steps of inflowing, aerating, sludge/water separating, discharging and idling. The invention provides an effective method for controlling the discharge of nitrogen and phosphorus in low-temperature sewage, which is widely applicable to the synchronous removal of nitrogen and phosphorus from low-temperature sewage and has good environmental benefit.

Description

technical field [0001] The invention relates to an aerobic granular sludge reactor for treating sewage and a water treatment method thereof, belonging to the field of sewage biological treatment reuse and resource utilization. Background technique [0002] In the traditional biological nitrogen and phosphorus removal system, especially at low temperature, the metabolic activity of microorganisms decreases, the performance and treatment effect of aerobic sludge become worse, and there are problems such as aerobic sludge bulking to varying degrees, which affects the biological nitrogen and phosphorus removal. normal operation of the system. As a special biofilm structure, aerobic granular sludge has gradually become a research hotspot in the field of sewage treatment due to its unique advantages. However, the poor start-up and stable operation performance of the aerobic granular sludge reactor, the poor performance of the aerobic sludge and the expansion of the aerobic sludge...

Claims

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Application Information

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IPC IPC(8): C02F3/12C02F3/30
CPCY02W10/10
Inventor 于水利暴瑞玲严晓菊左行涛王玉兰吴佳培
Owner HARBIN INST OF TECH
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