Sludge-water separate discharging method for strengthening stable operation of aerobic granular sludge process

An aerobic granular sludge, stable operation technology, applied in chemical instruments and methods, water/sludge/sewage treatment, biological water/sewage treatment, etc. Poor, unstable system operation, etc.

Active Publication Date: 2015-05-20
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a sludge water drainage method that strengthens the stable operation of the aerobic granular sludge process. Unstable, poor pollutant tr

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  • Sludge-water separate discharging method for strengthening stable operation of aerobic granular sludge process
  • Sludge-water separate discharging method for strengthening stable operation of aerobic granular sludge process
  • Sludge-water separate discharging method for strengthening stable operation of aerobic granular sludge process

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Embodiment 1

[0021] Such as figure 1 As stated, the main body of the reactor is a cylindrical aerobic granular sludge reactor with a H / D (height-to-diameter ratio) of 8. The reactor is arranged in order from bottom to top: water inlet 6, aeration device 7, water outlet 5, liquid level gauge 4. The water inlet 6 at the bottom of the reactor is connected with the water inlet pump 2 through the water inlet pipe, and the water is fed from the water distribution tank 1, and the upper liquid level of the water inlet is controlled by the liquid level gauge 4. The air is input to the aeration device 7 through the air blower 3, and the water is discharged from the reactor through the water outlet 5 in the middle. All water intake, aeration, and drainage in the device are automatically controlled by the programmable controller 8 . Of course, the reactor can be modified in many ways, which are well known to those skilled in the art.

[0022] Inoculate the activated sludge in the SBR reactor of...

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Abstract

The invention discloses a sludge-water separate discharging method for strengthening stable operation of an aerobic granular sludge process and belongs to the field of sewage treatment. According to the method, in a flocculent activated sludge inoculated reactor, municipal wastewater is taken as inlet water, a sludge-water-separate-discharging sludge discharging manner is adopted, sludge age (SRT) is taken as a regulating and controlling index, and the reactor achieves sludge granulation and stable pollutant removal efficiency under the condition of low-concentration inlet water. System sludge concentration (MLSS) is stabilized to be higher than 10g/L, and yielding water COD (Chemical Oxygen Demand) and ammonia nitrogen removal rate reach over 90%.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and relates to a sludge water drainage method that strengthens the start-up and stable operation of the aerobic granular sludge process. The SRT (sludge age) is used as the control index to strengthen the aerobic sludge granulation and the enrichment of functional microorganisms. Improve reactor operation stability and pollutant removal performance. Background technique [0002] Compared with ordinary activated sludge, aerobic granular sludge has the characteristics of compact structure, excellent settling performance, and multifunctional bacterial group coupling, which endows aerobic biological treatment process with good mud-water separation ability, simultaneous biological nitrogen and phosphorus removal, and high efficiency of organic matter. Degradation, excess sludge reduction and other obvious technical advantages and good development and application prospects, but when dealing with low-loa...

Claims

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Application Information

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IPC IPC(8): C02F3/12
CPCC02F3/1215C02F2101/16Y02W10/10
Inventor 周佳恒徐向阳朱亮余海天赵航
Owner ZHEJIANG UNIV
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