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A composite hydrolysis acidification reactor and process

An acidification reactor and composite hydrolysis technology, applied in chemical instruments and methods, aerobic and anaerobic treatment, anaerobic digestion treatment, etc., can solve the problem of high proportion of toxic and harmful substances and refractory organic matter, poor hydrolysis and acidification effect To achieve the effect of improving the utilization rate of pool capacity, avoiding hydraulic short flow, and evenly distributing water

Active Publication Date: 2018-06-01
ENVIRONMENTAL SCI RES & DESIGN INST OF ZHEJIANG PROVINCE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Aiming at the current situation that most of the hydrolytic acidification pools have poor hydrolysis and acidification effects due to the high proportion of toxic and harmful substances and refractory organic matter in high-concentration organic wastewater, the present invention combines high-efficiency obligate microbial agents, point-to-point water distribution systems and mud Combined with the organic combination of membrane symbiosis system, a composite hydrolysis acidification tank sewage treatment method and device are proposed

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  • A composite hydrolysis acidification reactor and process
  • A composite hydrolysis acidification reactor and process

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Effect test

Embodiment 1

[0070] Using the invention to treat chemical waste water mainly producing petrochemical cascade products, the water volume is 900m 3 / d, the influent water quality is as follows: COD Cr 3500mg / L, BOD 5 716mg / L, ammonia nitrogen 25mg / L, pH 7.8, and salt content of 1.1%.

[0071] The wastewater is first uniformly entered into the water inlet pipe set at the top of the hydrolysis and acidification tank from the regulating tank, and the high-efficiency microbial expansion device is added to the pipeline mixer through the dosing pipeline; the sewage and the high-efficiency microbial inoculum are evenly mixed and flow into two point-to-point water distribution. The high-efficiency microbial inoculum is dosed intermittently, generally once a week, and the dose is 0.2‰ of the treated water. The sewage is distributed into 24 equal volumes of water through a point-to-point water distributor, and is transported to 24 water distribution points evenly arranged at the bottom of the pool t...

Embodiment 2

[0075] Using the invention to treat printing and dyeing wastewater, the water volume is 2200m 3 / d, the influent water quality is as follows: COD Cr 1325mg / L, BOD 5 291mg / L, ammonia nitrogen 7mg / L, chroma 512 times, pH 9.2.

[0076] The wastewater first enters the top of the hydrolysis tank, and the high-efficiency microbial expansion device is added to the pipeline mixer through the dosing pipeline; the sewage and the high-efficiency microbial inoculum are evenly mixed and then flow into four point-to-point water distributors; Dosing intermittently, generally once a week, and the dosage is 0.1‰ of the treated water. The sewage is distributed into 24 equal volumes of water through a point-to-point water distributor, and is transported to 24 water distribution points evenly arranged at the bottom of the pool through a φ50 water distribution hose. The sewage rises evenly from the bottom of the hydrolysis tank with a rising flow rate of 1.2m / h. During the rising process of s...

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Abstract

The invention discloses a compound hydrolysis acidification reactor and a process. The reactor comprises: a reaction cylinder, in which a sludge filler layer, a filler biofilm layer and a water outlet area are sequentially arranged from bottom to top; a water distribution system, including At least one point-to-point water distributor on the top of the reaction cylinder and several water distribution points evenly distributed on the bottom of the reaction cylinder, each water distribution point is connected to the point-to-point water distributor through a water distribution hose; the microbial dosing system is located in the reaction cylinder The external body is connected to the point-to-point water distributor; the sewage inlet pipe is connected to the point-to-point water distributor; the mud discharge pipe is arranged at the bottom of the reaction cylinder. The invention organically combines high-efficiency obligate microbial agents, a point-to-point water distribution system and a mud film symbiosis system, and proposes a composite hydrolysis acidification tank sewage treatment method and device.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to a process and device for pretreatment of refractory organic waste water. Background technique [0002] For the refractory organic wastewater with a large amount and a wide range, it is difficult to meet the discharge standard by using a single aerobic biochemical method, and the operating cost is too high by using the physical and chemical method. The method of pretreatment of refractory organic wastewater by hydrolysis and acidification, followed by aerobic biochemical treatment has been widely used. For example, the publication number is CN102583927A Chinese invention patent application document, a kind of micro-aerobic hydrolysis and acidification method for sludge treatment, is to inoculate the sludge containing acid-producing bacteria in the hydrolysis acidification reactor, and intermittently feed air into the hydrolysis acidification reactor Air stirring is car...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/34C02F3/28C02F3/30
Inventor 李欲如梅荣武韦彦斐王震蒋涛张刚沈浙萍李明智张敏东
Owner ENVIRONMENTAL SCI RES & DESIGN INST OF ZHEJIANG PROVINCE
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