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Combined type blast aeration system

A blast aeration and combined technology, applied in sustainable biological treatment, water/sludge/sewage treatment, biological water/sewage treatment, etc. Problems such as low scouring strength of catenary microporous aeration device

Active Publication Date: 2009-02-25
SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantages are: ① The water area from the top of the fixed aeration device to the water surface is always in a state of supersaturated oxygenation, while other waters are in a state of unsaturated oxygenation, the oxygen concentration gradient is unevenly distributed, and the oxygen utilization rate is relatively low, which is prone to local "Backwater"
However, for biofilms, the scouring strength of the liftable tube-type catenary microporous aeration device is low, which is not conducive to the renewal of biofilms, and affects the biochemical treatment efficiency of the system to a certain extent.

Method used

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Embodiment 1

[0019] This combined blower aeration system is used in the biological contact oxidation process to treat polluted river water in a city in Kunming, Yunnan, with a treatment volume of 7000m 3 / d, the average influent water quality is COD90mg / L, BOD32mg / L, TN21mg / L, TP1.2mg / L, SS93mg / L. The aeration device in the oxidation tank such as figure 1 , 2 As shown, 1 is the main gas transmission pipe, 2 is the microporous catenary tube aerator that can be lifted, 3 is the fixed perforated tube aerator, 4 is the packing frame, 5 is the YDT elastic three-dimensional packing, and 6 is the self-contained gas Dry pipe to the downcomer of the microporous catenary aerator.

[0020] The main gas transmission pipe is made of DN80 galvanized steel pipe, covered with DN200 foam pipe; the liftable tubular catenary microporous device is produced by Guangzhou Weixinda Environmental Protection Equipment Co., Ltd. The length of the single aeration pipe is 90cm, and the average aperture is 100mm. Ai...

Embodiment 2

[0024] This combined blower aeration system is applied to treat a tannery in the combined process of coagulation sedimentation and biological contact oxidation, and the treated water volume is 480m 3 / d, the average influent water quality is COD1360.9mg / L, BOD753.5mg / L, SS544mg / L, and chromaticity 250 times. The aeration device in the biological contact oxidation tank such as figure 1 , 2 As shown, 1 is the main gas transmission pipe, 2 is the microporous catenary tube aerator that can be lifted, 3 is the fixed perforated tube aerator, 4 is the packing frame, 5 is the YDT elastic three-dimensional packing, and 6 is the self-contained gas Dry pipe to the downcomer of the microporous catenary aerator.

[0025] The main gas transmission pipe is made of DN70 galvanized steel pipe, covered with DN200 foam pipe; the liftable tubular catenary microporous device is produced in Guangzhou Weixinda Environmental Protection Equipment Co., Ltd. The length of the single aeration pipe is 4...

Embodiment 3

[0030] This combined blower aeration system is used in the buried biological contact oxidation process as a reclaimed water treatment station in a residential area. The reclaimed water source mainly comes from the domestic sewage in the residential area, and the treated water volume is 600m 3 / d. The influent water quality is COD120~200mg / L, BOD50~80mg / L, TN25~35mg / L, TP1.5~3mg / L, and the effluent is reused for flushing residents’ toilets, lawn sprinkler irrigation and playground flushing.

[0031] The aeration device in the biological contact oxidation tank such as figure 1 , 2 As shown, 1 is the main gas transmission pipe, 2 is the microporous catenary tube aerator that can be lifted, 3 is the fixed perforated tube aerator, 4 is the packing frame, 5 is the YDT elastic three-dimensional packing, and 6 is the self-contained gas Dry pipe to the downcomer of the microporous catenary aerator.

[0032] The main gas transmission pipe is made of DN70 galvanized steel pipe, covere...

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Abstract

The invention discloses a compound blast and aeration system that is applied in a biological contact oxidation system; the system is arranged under filler, and comprises a liftable tube-type catenaries suspension Millipore aerator and fixed perforation tube-type aeration device; the liftable tube-type catenaries suspension Millipore aeration device is arranged under the filler, and the fixed perforation tube-type aeration device is arranged under the liftable tube-type catenaries suspension Millipore aerator. The advantage of high oxygen utility ratio of the liftable tube-type catenaries suspension Millipore aerator is organically combined with the advantages of high scour intensity and easy regeneration of biomembrane of the fixed perforation tube-type aeration device, so as to lead the whole system to maintain the characteristics of high oxygen transfer rate, strong biomembrane activity, etc. The technology is convenient to implement, and the management and maintain are simpler; and the system has larger development space in the field of a biological contact oxidation aeration system.

Description

technical field [0001] The invention relates to an aeration device for a biological contact oxidation process in sewage treatment, in particular to a combined blast aeration system. Background technique [0002] The aeration system is an important part of the biological contact oxidation process, which can directly affect the biological treatment efficiency of the system through the activity of the biofilm on the filler, and the power consumption of the biochemical tank is determined by the difference in the utilization rate of oxygen. [0003] There are two main types of aeration methods for oxidation tanks in wastewater biological treatment: mechanical aeration and blast aeration. Among them, blast aeration equipment is divided into fixed aeration device and mobile aeration device according to different installation forms. [0004] The fixed aeration device is generally fixed at the bottom of the biochemical tank, and its main advantages are simple structure and low cost....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/12
CPCY02W10/10
Inventor 虢清伟金中许振成谌建宇陈泽涛黄建洪易皓骆其金
Owner SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP
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