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Rapid culture method for mixed culture denitrification desulphurization granule sludge

A technology of denitrification desulfurization and granular sludge, applied in biological sludge treatment, anaerobic digestion treatment and other directions, can solve the problem of not clearly explaining the steps and characteristics of granular sludge cultivation, and achieve good biological activity and hydraulic performance. , the removal effect is good, the effect of reducing the operating cost

Active Publication Date: 2015-07-15
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The cultivation steps and characteristics of granular sludge are not clearly stated in this method, and this process is completely different from the simultaneous removal of sulfur and nitrogen in the present invention

Method used

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  • Rapid culture method for mixed culture denitrification desulphurization granule sludge
  • Rapid culture method for mixed culture denitrification desulphurization granule sludge
  • Rapid culture method for mixed culture denitrification desulphurization granule sludge

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specific Embodiment approach 1

[0022] Specific embodiment one: a kind of polyculture denitrification desulfurization desulfurization granular sludge rapid cultivation method in this embodiment, realizes through the following steps: 1, take the flocculent sludge of the secondary settling tank of urban sewage plant, pack into and be equipped with three-phase separator UASB or EGSB reactor (the role of the three-phase separator is to prevent the large loss of inoculated sludge); 2. Prepare simulated wastewater containing sulfide, nitrate and organic matter, start the reactor; and add a concentration of 1 to the simulated wastewater -5g / L NaHCO 3 , to provide carbon source for the autotrophic microorganisms in the system; the molar ratio of the simulated wastewater sulfide, nitrating salt and organic matter is 1:1:1, and the pH value is 7; 3. Pump the simulated wastewater into UASB or EGSB reactor, control the temperature of the reactor at 30°C, domesticate the polyculture denitrification and desulfurization mi...

specific Embodiment approach 2

[0024] Embodiment 2: This embodiment differs from Embodiment 1 in that: the pH of the simulated wastewater in step 2 is 8. Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0025] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the pH of the simulated wastewater in step 2 is 6. Other steps and parameters are the same as those in the first embodiment.

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Abstract

The invention relates to a rapid culture method for granule sludge and provides a rapid culture method for mixed culture denitrification desulphurization granule sludge. The rapid culture method provided by the invention overcomes the problems of a long period, high operation cost and poor effects of a mixed culture denitrification granule sludge process due to introduction of harmful microbes in culture of mixed culture denitrification desulphurization granule sludge in the prior art. According to the invention, since activated sludge is used as inoculation sludge and granulation of the sludge is directly realized under the condition of addition of sodium chloride, the tedious steps of culture of sulfate reduced granule sludge at first and domestication of the mixed culture denitrification desulphurization granule sludge next are omitted, culture time for the granule sludge is shortened, and operation cost is saved; moreover, usage of methane-producing sludge as the inoculation sludge and introduction of harmful microbes are prevented, and high-efficiency operation efficacy of the denitrification desulphurization granule sludge is guaranteed; meanwhile, elemental sulfur is recovered, and reclamation of wastes is realized.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment and relates to a new method for rapid cultivation of polyculture denitrification and desulfurization granular sludge. Background technique [0002] With the rapid development of petroleum, chemical, pharmaceutical and other industries, a large amount of sulfur-containing and nitrogen-containing organic wastewater is produced. This type of wastewater not only contains a large amount of organic matter, but also contains high concentrations of sulfur-containing pollutants and nitrogen-containing pollutants. Into the water body not only causes eutrophication of the water body, but also produces problems such as stench, which seriously affects people's production and life. [0003] Polytrophic denitrification desulfurization technology realizes the synchronous removal of sulfide, nitrate and organic matter in one reactor through the synergistic effect of autotrophic denitrification microor...

Claims

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Application Information

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IPC IPC(8): C02F11/04C02F3/28
Inventor 刘春爽赵朝成张继亮国亚东刘芳赵东风
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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