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System and method for cultivation of aerobic particle sewage sludge and for treating organic waste water

A technology for aerobic granular sludge and organic wastewater, applied in water/sludge/sewage treatment, biological water/sewage treatment, sustainable biological treatment, etc. problems such as low activity, to achieve the effect of ensuring smooth progress and completion, shortening time and reducing costs

Inactive Publication Date: 2009-08-19
TIANJIN URBAN CONSTR COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sludge denitrification activity is also low, and the pH value recovery rate and range are small in the later period of the cycle

Method used

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  • System and method for cultivation of aerobic particle sewage sludge and for treating organic waste water

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Experimental program
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Effect test

Embodiment 1

[0024] Embodiment 1: short cycle SBR cultivates aerobic granular sludge

[0025] The flocculent activated sludge is used to inoculate, and the sewage used for cultivation uses glucose as the carbon source, and the COD Cr Concentration 900mg / L, TN concentration 90mg / L, TP concentration 18mg / L, sodium bicarbonate 150-1200mg / L. The aspect ratio of the SBR main reactor is 16.7. The SBR operates in short cycle mode with a cycle time of 2.5h. Each cycle includes water intake time of 5 minutes, aeration starts at the same time of water intake, aeration time of 132-144 minutes, settling time decreases step by step from 15 minutes, 10 minutes, 6 minutes, 4 minutes to 3 minutes, and drainage time of 3 minutes. SBR drainage ratio is 1 / 3. The water temperature is controlled at room temperature, and the pH is controlled between 6.5-8.0. According to the process requirements, the sewage influent 1 is added to the water storage tank 2. After setting and starting the automatic control de...

Embodiment 2

[0026]Example 2: Treatment of low-concentration domestic sewage with aerobic granular sludge in short-cycle SBR

[0027] The aerobic granular sludge was cultivated according to the conditions and methods of Example 1, and the cultivated AGS was used to treat low-concentration domestic sewage in a short-cycle SBR. COD of Low Concentration Domestic Sewage Cr , ammonia nitrogen and TP concentration are about 400mg / L, 40mg / L and 8mg / L respectively.

[0028] The aspect ratio of the SBR main reactor is 16.7. The SBR operates in short cycle mode with a cycle time of 2.5h. Each cycle includes water inflow for 5 minutes, aeration starts at the same time as water inflow, aeration time is 144 minutes, settlement time is 3 minutes, and drainage time is 3 minutes. SBR drainage ratio is 1 / 3. The water temperature is controlled at room temperature. Dosing sodium bicarbonate 150mg / L, control the pH between 6.5-8.0.

[0029] According to the process requirements, the sewage influent 1 is...

Embodiment 3

[0031] Example 3: Treatment of medium-concentration sewage with aerobic granular sludge in short-cycle SBR

[0032] The aerobic granular sludge was cultivated according to the conditions and methods of Example 1, and the medium-concentration sewage was treated in a short-cycle SBR by using the cultivated AGS. COD of medium concentration sewage Cr , ammonia nitrogen and TP concentration are about 900mg / L, 120mg / L and 16mg / L respectively.

[0033] The aspect ratio of the SBR main reactor is 16.7. The SBR operates in short cycle mode with a cycle time of 2.5h. Each cycle includes water inflow for 5 minutes, aeration starts at the same time as water inflow, aeration time is 144 minutes, settlement time is 3 minutes, and drainage time is 3 minutes. SBR drainage ratio is 1 / 3. The water temperature is controlled at room temperature. Add sodium bicarbonate 600mg / L to control the pH between 6.5-8.0.

[0034] According to the process requirements, the sewage influent 1 is added to...

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Abstract

The invention relates to a system and a method for culturing aerobic grain sludge(AGS) and treating organic waste water generated during the culture of the aerobic grain sludge. An SBR system with short period is adopted to culture the aerobic grain sludge(AGS) and treat the organic waste water. The system consists of a main reactor, a water charging system, a water discharging system, an aeration system and a corresponding self-control device. A 2.5h short-period SBR operating mode is adopted, and four stages of water charging, aeration, precipitation and water discharging are included in each period. The water charging time is 5 min, the aeration is started while charging water, the aeration time is 132 to 144 min, the precipitation time is 3 to 15 min, and the water discharging time is 3 min. The pH value of the culture and treatment system is controlled by adding bicarbonate. The bicarbonate is sodium bicarbonate, and the adding range is between 0 and 1,200 mg / L. By utilizing the system and the method, the AGS can be quickly and economically cultured, and the organic substances, nitrogen and phosphorus in the organic waste water can be treated in high efficiency. The system and the method can be applied to the culture and production of the aerobic grain sludge and the treatment of the organic waste water, so that the system and the method have important practical values.

Description

technical field [0001] The invention discloses an aerobic granular sludge (AGS) cultivation and a system and method for treating organic wastewater, belonging to the technical field of environmental protection and wastewater treatment. Specifically, it is a system and method for short-cycle SBR to cultivate aerobic granular sludge and treat organic wastewater. Background technique [0002] Aerobic granular sludge technology is a new technology with great engineering application potential developed since the 1990s. It is expected to be used to treat municipal sewage, residential sewage, food industry wastewater, dairy industry wastewater, phenolic wastewater or other Toxic and harmful wastewater, etc. Therefore, the research and development of aerobic granular sludge technology has become one of the hot spots of research and development at home and abroad. [0003] The large-scale cultivation and production of aerobic granular sludge is one of the prerequisites for the prac...

Claims

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Application Information

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IPC IPC(8): C02F3/12C02F101/30
CPCY02W10/10
Inventor 马华继
Owner TIANJIN URBAN CONSTR COLLEGE
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