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Integrated up-flow reactor and advanced treatment method of fermentation industrial effluent

A reactor and flow-type technology, which is applied in the integrated upflow reactor and the field of advanced treatment of fermentation industrial wastewater, can solve the problems of long start-up time and short residence time, and achieve the effect of improving biodegradability and easy degradability

Inactive Publication Date: 2010-04-28
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above-mentioned integrated reactors are mostly used to treat high-concentration and easily biodegradable industrial wastewater, or to treat small and medium-scale domestic sewage and a small number of small-scale industrial wastewater with relatively stable properties and low-to-medium concentrations, focusing on COD and nitrogen. In addition, the start-up time is long, and more excess sludge is produced. However, in the treatment of secondary biochemical effluent of fermentation industrial wastewater with high salinity, high chroma, mainly soluble and refractory organic matter, and large fluctuations in water quality and quantity In this field, the development and application of an integrated bioreactor with strong pertinence, fast start-up, easy domestication, short residence time and less residual sludge has not yet been seen.

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Examples

Experimental program
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Effect test

Embodiment 1

[0027] In the integrated upflow reactor, the wastewater enters the upflow anaerobic biofilter 2 of the reactor from the bottom water distribution device 1. It is in an upflow state, and first passes through the sludge bed 3, and the biological sludge conducts preliminary purification of refractory organic matter in the wastewater. Hydrolysis, acidification, and interception of suspended particulate matter, and then flow up through the packing layer 5, under the action of a large number of anaerobic microorganisms attached to the packing, the refractory organic matter is further degraded into organic matter that is easy to aerobic biodegradation; then the water flow rises through the transition zone At 6 o'clock, the anaerobic biological sludge rising with the water flow is blocked by the diamond-shaped baffle 7 and the inclined plate 8 and cannot enter the upper moving bed biofilm reactor 11, most of it settles to the sludge bed 2 at the bottom of the reactor, and a small part i...

Embodiment 2

[0039] The integrated upflow reactor with the same structure as in Example 1 was used to process the anaerobic and aerobic biochemical treatment effluent of another vitamin C pharmaceutical factory. The treatment capacity was 3000t / d, and its water quality was specifically shown in Table 3:

[0040] Table 3 Anaerobic plus aerobic biochemical treatment effluent of a vitamin C pharmaceutical factory

[0041] COD Cr (mg / L)

[0042] The parameters of the integrated upflow reactor are as follows: the cross section of the whole reactor is square, the side length is 5m, the height of the moving bed biofilm reactor is 10m, the height of the upflow anaerobic biofilter is 6m, and the height of the transition zone is 2m. The total volume is 450m 3 , The total hydraulic retention time is 3.6h. The filler used in the upflow anaerobic biological filter is biological rope, which is basically filled; the suspended filler used in the moving bed biofilm reactor has a specific gravi...

Embodiment 3

[0048] The anaerobic biochemical treatment effluent of citric acid production wastewater is processed with the integrated upflow reactor with the structure of Example 1, and the treatment capacity is 1500t / d, and its water quality situation is specifically shown in Table 5:

[0049] Table 5 The effluent quality of anaerobic and aerobic biochemical treatment of production wastewater from a citric acid factory

[0050] COD Cr (mg / L)

BOD(mg / L)

Chroma (dilution factor)

Salinity (mg / L)

pH

400

90

130

4900

7.1

[0051] The parameters of the integrated upflow reactor are as follows: the cross section of the whole reactor is square, the side length is 2.5m, the height of the moving bed biofilm reactor is 5m, the height of the upflow anaerobic biofilter is 3m, and the height of the transition zone is 1m , with a total volume of 225m 3 , The total hydraulic retention time is 3.6h. The filler used in the upflow anaerobic biol...

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Abstract

The invention discloses an integrated up-flow reactor and an advanced treatment method of fermentation industrial effluent, belonging to effluent treatment field. The upper part of the reactor is an aerobic fluidized bed system, the lower part is an anaerobic filter system, the intermediate transition zone is designed to be a connecting part which has a tri-phase separation function and organically combines the upper part and the lower part together. In the reactor, the concentration of biological solid is high and the retention time of biological solid is long, therefore the reactor is suitable for treating secondary biochemical treatment effluent of fermentation industrial effluent which has high salinity and is difficult to be biodegraded; sludge output of each system is low, and the residual sludge generated in the aerobic zone enters to the transition zone and the anaerobic zone to be further treated, the overall sludge output of the reactor is low, and simultaneously, the reactor contains rich biological species which act on organics difficult to be degraded jointly and promote the degradation thereof. The integrated reactor has low energy consumption, less land occupation, convenient operation, load impact resistance and high treatment efficiency, thereby being applicable to the advanced treatment of fermentation industrial effluent.

Description

technical field [0001] The invention relates to a wastewater treatment reactor and its application method for advanced treatment of fermentation industrial wastewater, more specifically an integrated upflow reactor designed in combination with MBBR and AF processes and its application in advanced treatment Process for fermenting industrial wastewater. Background technique [0002] my country's fermentation industry is well developed, and the level and scale of industries such as yeast, alcohol, citric acid, beer, vitamin C and monosodium glutamate are among the top in the world, and they are important pillar industries in my country. However, the fermentation industry will generate and discharge a large amount of high-concentration refractory organic wastewater during the production process. The wastewater must be properly treated and discharged up to the standard in order to ensure the sustainable development of the fermentation industry. Fermentation industrial wastewater...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F3/30
Inventor 任洪强许柯丁丽丽谢吉程任鑫坤
Owner NANJING UNIV
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