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Anaerobic granular sludge, and culture method and applications thereof

A technology of anaerobic granular sludge and cultivation method, applied in the direction of anaerobic digestion treatment, etc., can solve the problems of complex sources and unsuitable rural wastewater, and achieve the effect of high sedimentation efficiency and high porosity

Active Publication Date: 2018-12-14
云南天朗环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For rural wastewater, due to its complex sources and different water quality at different times, it is difficult to cultivate anaerobic high-efficiency bacteria for its degradation. Secondly, the operating conditions for cultivating general anaerobic granular sludge are not suitable for rural wastewater

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Add inoculated sludge to the anaerobic granular sludge cultivation device, and transport rural sewage at the bottom of the anaerobic granular sludge cultivation device. The initial COD value of the wastewater is 2000mg / L, and the temperature in the anaerobic granular sludge cultivation device The temperature is 3133°C, and the pH value is 7.3; the VSS of the inoculated sludge is 13g / L, and the SS is 23g / L. The volume of the inoculated sludge accounts for 8% of the volume of the anaerobic granular sludge cultivation device. The amount of adding trace elements is to make the Ca in the device 2+ 60mg / l, Mg 2+ 110mg / l, Fe 2+ It is 12 mg / l.

[0032] (2) Use the static domestication method to domesticate the inoculated sludge in the anaerobic granular sludge cultivation device, set the hydraulic retention room to 20h, and add N, P, and S elements to measure the COD value of the sampling port of the anaerobic granular sludge cultivation device, When the COD removal rat...

Embodiment 2

[0036] (1) Add inoculated sludge to the anaerobic granular sludge cultivation device, and transport rural sewage at the bottom of the anaerobic granular sludge cultivation device. The initial COD value of the wastewater is 2200mg / L, and the temperature in the anaerobic granular sludge cultivation device The temperature is 32°C, and the pH value is 7.4; the VSS of the inoculated sludge is 14g / L, and the SS is 24g / L. The volume of the inoculated sludge accounts for 9% of the volume of the anaerobic granular sludge cultivation device. The amount of adding trace elements is to make the Ca in the device 2+ 70mg / l, Mg 2+ 120mg / l, Fe 2+ It is 14mg / l.

[0037] (2) Use the static domestication method to domesticate the inoculated sludge in the anaerobic granular sludge cultivation device, set the hydraulic retention room to 20h, and add N, P, and S elements to measure the COD value of the sampling port of the anaerobic granular sludge cultivation device, When the COD removal rate r...

Embodiment 3

[0041] (1) Add inoculated sludge to the anaerobic granular sludge cultivation device, and transport rural sewage at the bottom of the anaerobic granular sludge cultivation device. The initial COD value of the wastewater is 2400mg / L, and the temperature in the anaerobic granular sludge cultivation device The temperature is 32.5°C, and the pH value is 7.5; the VSS of the inoculated sludge is 14.5g / L, and the SS is 25g / L. The volume of the inoculated sludge accounts for 9.5% of the volume of the anaerobic granular sludge cultivation device. The amount of adding trace elements is to make the Ca in the device 2+ 80mg / l, Mg 2+ 130mg / l, Fe 2+ It is 17mg / l.

[0042] (2) Use the static domestication method to domesticate the inoculated sludge in the anaerobic granular sludge cultivation device, set the hydraulic retention room to 20h, and add N, P, and S elements to measure the COD value of the sampling port of the anaerobic granular sludge cultivation device, When the COD removal ...

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Abstract

The invention discloses anaerobic granular sludge, and a culture method and applications thereof. The culture method is invented based on rural sewage characteristics, inlet water COD is increased gradually in culture process, so that the anaerobic granular sludge is improved to be suitable for processing of sewage of different COD, and different stage culturing including sludge inoculation, sludge domestication, granular sludge forming, and granular sludge aging is adopted so as to obtain the anaerobic granular sludge suitable for rural sewage processing. The whole culture process takes 30 days or shorter; the consumed time is shorter than that of conventional culture technology; and the main problem in anaerobic granular sludge culturing that the efficiency is low is solved.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to anaerobic granular sludge and its cultivation method and application. Background technique [0002] At present, anaerobic biotechnology is widely used in food and chemical industries, among which anaerobic granular sludge technology has the advantages of wide application range, low energy consumption, high load, and less residual sludge in wastewater treatment, especially for high concentration The treatment effect of organic wastewater is more significant. However, anaerobic granular sludge also has shortcomings such as long cultivation time, high temperature requirements, and poor nitrogen and phosphorus removal effects. At present, many studies have focused on its cultivation time and temperature, and have achieved remarkable results. [0003] The cultivation of anaerobic granular sludge requires certain water quality and operating conditions, such as the...

Claims

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Application Information

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IPC IPC(8): C02F3/28
CPCC02F3/28
Inventor 赵明华孟恒段云湘徐祯辛剑高波刘濮瑜
Owner 云南天朗环境科技有限公司