A hydrolytic acidification tank based on granular sludge enhanced flocculation process
A technology for hydrolyzing acidification tank and granular sludge, applied in the direction of anaerobic digestion treatment, etc., can solve the problems of biochemical sludge sedimentation at the bottom of the tank, poor hydrolysis and acidification effect, failure to reach sludge concentration, etc., to increase water flow turbulence. , the effect of strengthening biological treatment efficiency and saving energy
Active Publication Date: 2015-09-09
HUBEI ZHONGBI ENVIRONMENTAL PROTECTION TECHCO
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Problems solved by technology
The former supports the sludge bed by the rising force of sewage, and absorbs and decomposes COD by maintaining a high concentration of anaerobic organisms in the pool, that is, activated sludge. However, this device has restrictions on uneven water distribution. Sludge deposits on the bottom of the tank, making hydrolytic acidification less effective
The latter avoids the problem of sludge deposition by setting a stirring device in the tank, but it consumes a lot of energy, and if the stirring is too strong, it will lead to the loss of anaerobic sludge, and it is inconvenient to maintain
Moreover, the content of granular sludge formed in the traditional hydrolysis acidification tank is small. When the content of refractory dissolved organic matter in the sewage is high, the mud process cannot reach the required sludge concentration by ordinary sedimentation. Even if the concentration is reached, Sludge is also mainly from the suspension of inorganic particles in water, so the activity of sludge is low
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[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0023] Such as figure 1 As shown, the preferred hydrolytic acidification tank based on the granular sludge enhanced flocculation process of the present invention includes a water inlet pipe 1, a nozzle 2, a throat pipe 3, a bell mouth 4, a mesh plate 5, a baffle plate 6, an outlet pipe 7, and a mud discharge pipe 8 , a first-level flocculation chamber 9, a second-level flocculation chamber 10, a mud-water separation chamber 11, and a water collection channel 12, one end of the nozzle 2 is connected to the water inlet pipe 1, and the other end extends into the bottom of the bell mouth 4; the bottom of the throat pipe 3 is connected to the The upper part of the bell mouth 4 is connected, and the upper part is connected with the lower part of the primary flocculation chamber 9; the upper part of the primary flocculation chamber 9 is connected with the seco...
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The invention discloses a hydrolytic acidification tank based on granular sludge reinforced flocculation technique. The reactor is mainly composed of two stages of flocculating chambers and a sludge-water separation chamber, wherein rapidly injected raw water forms a vacuum in the device, so that part of reflux granular sludge after sludge-water separation is sucked in; and the raw water and granular flow across the two stages of flocculating chambers to perform contact flocculation, wherein the primary flocculating chamber is provided with a screen for reinforcing the flocculation action, and the sewage subjected to secondary flocculation is subjected to further reinforcement treatment through a filler layer. The hydrolytic acidification tank does not need any stirring or refluxing unit, and has the advantages of low energy consumption, high return sludge activity, high biomass, favorable sludge-water separation effect and high flocculation efficiency.
Description
technical field [0001] The invention relates to the field of sewage treatment, in particular to an improved hydrolysis acidification tank based on granular sludge enhanced flocculation process. Background technique [0002] The hydrolytic acidification treatment method is a method between aerobic and anaerobic treatment methods, and the combination with other processes can reduce treatment costs and improve treatment efficiency. According to the difference in growth rate between methanogenic bacteria and hydrolytic acid-producing bacteria, the hydrolytic acidification process controls the anaerobic treatment in the first and second stages of anaerobic treatment with short reaction time, that is, under the action of a large number of hydrolytic bacteria and acidification bacteria, the insoluble organic matter It is the process of hydrolyzing into dissolved organic matter and transforming difficult biodegradable macromolecular substances into easily biodegradable small molecul...
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IPC IPC(8): C02F3/28
Inventor 李孟张斌张彦卿史艾华陈维立史娇蓉吴道森
Owner HUBEI ZHONGBI ENVIRONMENTAL PROTECTION TECHCO