Sewage treatment method using active sludge-biological filtering pond revere flow and integral device

A sewage treatment device and activated sludge technology, applied in the direction of biological water/sewage treatment, water/sludge/sewage treatment, sustainable biological treatment, etc., can solve difficult operation control and management, increase energy consumption, aerobic section Continuous aeration has high energy consumption and other problems, and achieves good organic matter and suspended matter removal capacity, water and energy saving, and good treatment effect.

Inactive Publication Date: 2005-08-24
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially for the treatment of small flow, these processes are complex, high energy consumption, difficult to operate control and management
With the continuous development of technology, there are more and more integrated biotechnology related to sewage treatment, such as "integrated A biotechnology" disclosed in Chinese patent 02116029 2 / O biochemical system", the "sequencing batch integrated membrane bioreactor" disclosed in Chinese patent 03133571, etc., but some of these technologies have complex structures, and the pool body is divided into upper and lower layers, and some need pumping during operation. Suction pumps and lift pumps increase the energy consumption during operation, and the operation mode is relatively single, which cannot flexibly adjust the aerobic, anaerobic and anoxic environments, which is not conducive to the cultivation of dominant bacteria to improve the response ability
In summary, the existing sewage biological nitrogen and phosphorus removal methods have the problems of long process flow, complicated operation, high energy consumption for continuous aeration in the aerobic section, and difficult operation control and management. Large investment and other defects

Method used

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  • Sewage treatment method using active sludge-biological filtering pond revere flow and integral device
  • Sewage treatment method using active sludge-biological filtering pond revere flow and integral device
  • Sewage treatment method using active sludge-biological filtering pond revere flow and integral device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: see figure 1 , 2 , the activated sludge-biological filter internal reflux integrated biological reaction device is divided into two reaction areas and a separation area by the partition plate, the bottom of the front activated sludge area and the bottom of the rear biological filter area are respectively separated from the The bottom of the separation and precipitation area is connected, and a flap 10 is arranged inside the separation and precipitation area to divide the precipitation area into two parts. Such as image 3 As shown, the process flow is continuous water inflow and outflow. The raw water first enters the activated sludge section through the water inlet pipe 1, then flows around the sedimentation area of ​​the inclined plate 12 and the folded plate 10, and then enters the packing layer of the biological filter, and finally passes through the outlet pipe 5 discharge. The lower part of the activated sludge section is equipped with an aeration...

Embodiment 2

[0027] Example 2: see Figure 4, the raw water first enters the activated sludge section through the water inlet pipe 1, then flows through the inclined plate sedimentation area and the folded plate, and then enters the packing layer of the biological filter, and finally is discharged through the outlet pipe 5. Close the aeration pipe 2, the activated sludge section is not aerated, and start the agitator 8, so that the activated sludge in this section is in a suspended state; the bottom of the activated sludge section is provided with a sludge discharge pipe 3, which is controlled by a valve and regularly discharged. At the same time, it also serves as an emptying pipe, which can drain the sewage in the activated sludge section when necessary; the biofilter section is equipped with an aeration pipe 7 near the bottom of the packing layer, and adopts continuous or intermittent aeration, and the DO is maintained at 2.0mg / L or more; when the filter is aerated, the water level can ...

Embodiment 3

[0028] Example 3 is mainly used for removing organic matter, suspended matter and denitrification and dephosphorization.

[0029] Embodiment 3: see image 3 , Figure 4 , the raw water first enters the activated sludge section through the water inlet pipe 1, then flows through the inclined plate sedimentation area and the folded plate, and then enters the packing layer of the biological filter, and finally is discharged through the outlet pipe 5. The activated sludge section and the filter section adopt alternate intermittent aeration, that is, when the activated sludge is aerated, the filter section is not aerated, and the schematic diagram of the water flow is as follows image 3 As shown; when the activated sludge section is not aerated, start the agitator to maintain the sludge in a suspended state. At this time, the filter section is aerated, and the water level of the filter section is raised by aeration, and the water level generated by the activated sludge section Po...

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Abstract

A method and apparatus for treating sewage features that its bioreacting apparatus uses active sludge-biologic filter pool internal reflux, and the aeration and the non-aeration are flexibly applied to the active sludge segment and biologic filter pool segment for optimizing the treating effect.

Description

technical field [0001] The invention relates to a sewage treatment method and an integrated biological reaction facility thereof, in particular to an activated sludge-biological filter internal reflux method and an integrated sewage treatment device, belonging to sewage treatment environmental protection [0002] technology field. Background technique [0003] With the development of industry, agriculture and economy, the degree of eutrophication caused by the discharge of sewage containing a large amount of nitrogen and phosphorus is becoming more and more serious, which has a certain impact on the ecological environment. Traditional wastewater nitrogen and phosphorus removal processes, such as A 2 / O, UCT and other processes require four pools including anaerobic pool, anoxic pool, aerobic pool, and secondary sedimentation pool. The effluent from the aerobic pool needs a backflow pump to return part of the mixed solution to the anoxic pool to ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/10C02F3/12
CPCY02W10/10
Inventor 郭劲松方芳刘智萍高旭周健
Owner CHONGQING UNIV
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