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Compound technology of biomembrane and granular sludge for treating sulfur-bearing organic wastewater

A technology for granular sludge and organic wastewater, which is applied in waste fuel, anaerobic digestion treatment, biological sludge treatment, etc. It can solve the problems of particle loss, high effluent SS, deterioration of effluent quality, etc., and achieve extended residence time and efficient reduction. , the effect of increasing the holding capacity of the creature

Active Publication Date: 2011-05-25
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of particle loss, sulfate-reducing bacteria and microorganisms of anaerobic oxidation of organic matter that are difficult to achieve effective coordination in the existing process for treating sulfur-containing organic wastewater, resulting in high SS of effluent and deterioration of effluent quality. Provides a biofilm and granular sludge composite process for treating sulfur-containing organic wastewater

Method used

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  • Compound technology of biomembrane and granular sludge for treating sulfur-bearing organic wastewater
  • Compound technology of biomembrane and granular sludge for treating sulfur-bearing organic wastewater

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specific Embodiment approach 1

[0011] Specific implementation mode one: as figure 1 As shown, a biofilm and granular sludge composite process for treating sulfur-containing organic wastewater described in this embodiment is realized based on an anaerobic biofilm and granular sludge composite device. The device includes a water inlet pipe 1, Water distribution device 2, sludge bed area 3, packing area 4, transition area 5, settling area 6, gas collection chamber 7, three-phase separator 8, return pump 12 and return pipe 11, the water distribution device 2, sewage The mud bed area 3, the filling area 4, the transition area 5, and the settlement area 6 are arranged in sequence from bottom to top and communicate with each other, and the filling area 4 and the sludge bed area 3 form a reaction area; it is characterized in that the process is realized by the following steps:

[0012] Step 1. Mix the bio-augmented bacteria solution and the filler in the container at a volume ratio of 1:10, add the nutrient solutio...

specific Embodiment approach 2

[0015] Specific embodiment two: The bioaugmented bacterial liquid described in this embodiment is the sulfate-reducing bacteria expansion culture liquid separated and screened from the activated sludge that is rich in sulfate organic wastewater, and the concentration is 10 10 ~10 12 cfu / ml. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0016] Specific embodiment three: the nutrient solution described in this embodiment is composed of glucose, sodium sulfate, urea and potassium dihydrogen phosphate, wherein the concentration of glucose is 500 mg / L, the concentration of sodium sulfate is 148 mg / L, the concentration of urea is 27 mg / L, phosphoric acid Potassium dihydrogen concentration is 11mg / L; COD, SO 4 2- , N, P concentration ratio is 200:100:5:1. Others are the same as in the first embodiment.

[0017] Specific implementation mode four: as figure 1 As shown, the simulated sulfate-containing organic wastewater is treated with an anaerobic biofilm and granular sludge composite device. The filler used in the filler area is a hanging soft fiber bundle filler, and the fiber bundle filler is fixed on the center rope at a certain distance. Both ends of the central rope are connected with the fixing frame, and the fiber bundle filler is fixed in the composite device of anaerobic biofilm and granular sludge thro...

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Abstract

A compound technology of biomembrane and granular sludge for treating sulfur-bearing organic wastewater relates to a technology for treating wastewater. The invention solves the problems of higher effluent SS and deteriorative effluent quality caused by loss of sludge and effective coordination difficultly available between sulfate reducing bacteria and microorganisms of anaerobic organism oxidation in the existing technology for treating sulfur-bearing organic wastewater. The compound technology is realized according to the following steps of: 1. adopting an intermittent hanging film mode tolead the sulfate reducing bacteria to hang a film on filler; 2. after the hanging film of the sulfate reducing bacteria succeeds, putting the filler in a filler section and starting a reaction device;and 3. after 2-3 days, starting a reflux pump. The technology realizes secondary fixation of hanging film for the sulfate reducing bacteria on the used filler, increases the biological holding volumeof a reactor, simultaneously, effectively prolongs the biological solid retention time of the sulfate reducing bacteria and realizes the high efficiency reduction of sulfate while removing organisms.

Description

technical field [0001] The invention relates to a waste water treatment process, in particular to a composite biofilm and granular sludge process for treating sulfur-containing organic waste water. Background technique [0002] In recent years, the environmental pollution of high-concentration sulfate-containing organic wastewater has become increasingly serious, and its main sources are pharmaceutical, fermentation, chemical, food processing, tanneries and other industries. High-concentration sulfate organic wastewater contains high-concentration organic matter and sulfate. If it is not treated or the treatment is not up to standard, it will cause serious pollution after being discharged into the water body. Sulfate is reduced by microorganisms under anaerobic conditions, which will not only cause biological corrosion, but also produce toxic gas hydrogen sulfide, which will easily cause the pH value of the water to decrease, the soil to become acidic, and cause serious poll...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F3/28C02F1/66C02F11/04
CPCY02E50/343Y02E50/30
Inventor 王爱杰毕建培任南琪刘春爽刘充
Owner HARBIN INST OF TECH
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