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A baffled anaerobic reactor

A baffled anaerobic reactor technology, applied in the field of sludge treatment, can solve the problems of pulping black liquor pollution and poor pulping black liquor treatment effect, and achieve good practicability and improve mass transfer efficiency

Active Publication Date: 2015-08-05
JIANGSU RUIDA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, pulping wastewater can be treated by anaerobic biological treatment to reduce pollution, but because many high-efficiency anaerobic reactors are not effective in treating pulping black liquor, it is necessary to design more reasonable and efficient anaerobic reactors to solve the problem of pulping. Pollution of black liquor

Method used

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  • A baffled anaerobic reactor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1 Effect of initial COD concentration and sludge concentration on black liquor COD removal rate

[0039] (1) Effect of sludge concentration on black liquor treatment effect

[0040] Change the sludge concentration in the reactor to 2.0, 4.0, 6.0, 8.0g / L respectively, keep the black liquor COD concentration at 4.0g / L, hydraulic retention time at 2d, sludge reflux ratio at 100%, and add nutrient solution appropriately and trace element mother liquor, anaerobic treatment is carried out in the reactor, and the continuous operation mode is adopted, and the anaerobic reaction is carried out under the constant temperature condition of 37°C. Measure the change of black liquor COD.

[0041] (2) Influence of black liquor COD concentration on treatment effect

[0042] Change the black liquor COD concentration of the reactor to 2.0, 4.0, 6.0, 8.0, 10.0g / L respectively, keep the sludge concentration at 5.0g / L, the hydraulic retention time at 2d, the sludge reflux ratio at ...

Embodiment 2

[0045] Example 2 Effects of black liquor initial COD concentration and sludge concentration on pH

[0046] (1) Effect of sludge concentration on black liquor treatment effect

[0047] Change the sludge concentration in the reactor to 2.0, 4.0, 6.0, 8.0g / L respectively, keep the black liquor COD concentration at 4.0g / L, hydraulic retention time at 2d, sludge reflux ratio at 100%, and add nutrient solution appropriately and trace element mother liquor, anaerobic treatment is carried out in the reactor, and the continuous operation mode is adopted, and the anaerobic reaction is carried out under the constant temperature condition of 37°C. Measure the change in pH of black liquor.

[0048] (2) Influence of black liquor COD concentration on treatment effect

[0049] Change the black liquor COD concentration of the reactor to 2.0, 4.0, 6.0, 8.0, 10.0g / L respectively, keep the sludge concentration at 5.0g / L, the hydraulic retention time at 2d, the sludge reflux ratio at 100%, and a...

Embodiment 3

[0052] Example 3 Effect of initial COD concentration and sludge concentration of black liquor on gas production

[0053] (1) Effect of sludge concentration on black liquor treatment effect

[0054] Change the sludge concentration in the reactor to 2.0, 4.0, 6.0, 8.0g / L respectively, keep the black liquor COD concentration at 4.0g / L, hydraulic retention time at 2d, sludge reflux ratio at 100%, and add nutrient solution appropriately and trace element mother liquor, anaerobic treatment is carried out in the reactor, and the continuous operation mode is adopted, and the anaerobic reaction is carried out under the constant temperature condition of 37°C. The change of gas production in the reactor was measured during the reaction.

[0055] (2) Influence of black liquor COD concentration on treatment effect

[0056] Change the black liquor COD concentration of the reactor to 2.0, 4.0, 6.0, 8.0, 10.0g / L respectively, keep the sludge concentration at 5.0g / L, the hydraulic retention ...

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Abstract

The invention discloses a baffling type anaerobic reactor. The baffling type anaerobic reactor comprises a main body and a cover which is matched with the main body, wherein a plurality of baffles are arranged in the main body; the baffles divide the internal space of the main body into a plurality of reaction chambers; the volume of the reaction chambers is different; the height of the baffles is sequentially reduced from inside to outside; shoe plates are arranged on the cover and matched with the baffles; a sludge inlet is formed at the bottom of the main body; a water outlet is formed on one side of the main body; gas outlets are formed on the cover. The baffling type anaerobic reactor can achieve high enough sludge retaining time, allow solid and liquid in the reactor to completely mix and contact, and ensure excellent growth of microorganism. The inside of the reactor is divided into three layers, and the volume of each layer can be adjusted to make waste water retain for different time in each section, thereby enabling the microorganism at the different layers to have different environment characteristics. The baffling type anaerobic reactor is of good practicability.

Description

technical field [0001] The invention belongs to the technical field of sludge treatment, and in particular relates to a baffled anaerobic reactor. Background technique [0002] Pulping waste liquid is one of the most difficult biodegradable and most polluting pollutants at present. Its main performances are: heavy pollution load, deep color, high alkalinity, and high content of refractory biodegradable substances. At present, pulping wastewater can be treated by anaerobic biological treatment to reduce pollution, but because many high-efficiency anaerobic reactors are not effective in treating pulping black liquor, it is necessary to design more reasonable and efficient anaerobic reactors to solve the problem of pulping. Black liquor pollution problem. [0003] Due to the slow growth of anaerobic microorganisms and long generation time, maintaining a large amount of active microorganisms (sludge) and a sufficiently long sludge age in the reactor is the key to improving the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/28
Inventor 乔维川
Owner JIANGSU RUIDA TECH CO LTD