Hydrolysis acidizing settling pond and application thereof

A technology of hydrolytic acidification and sedimentation tank, which is applied in the field of wastewater treatment, can solve problems such as easy clogging, poor phosphorus removal effect, and slopping water in the factory area, and achieve the effect of eliminating clogging and improving the effect

Active Publication Date: 2012-10-03
THUNIP CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main technical problems are: the diameter of the water distribution pipe is generally DN40, and it has a 90-degree elbow, which is easy to be blocked, causing slugging in the factory area; the phosphorus removal effect is poor

Method used

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  • Hydrolysis acidizing settling pond and application thereof
  • Hydrolysis acidizing settling pond and application thereof
  • Hydrolysis acidizing settling pond and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: hydrolytic acidification sedimentation tank

[0028] see figure 2 and image 3 . The hydrolytic acidification sedimentation tank has four treatment tank grids 5, and each treatment tank grid 5 has a water distribution pipe 2 with a nominal diameter of DN80. The water distribution pipe 2 is connected to the water distribution channel 1 and vertically leads to the bottom of the treatment tank grid; The hydrolytic acidification sedimentation tank is connected with the grit chamber through the pipeline and the water inlet channel 8, the hydrolytic acidification sedimentation tank is provided with a mud discharge pipe 4 and a mud discharge pump, and the hydrolysis acidification sedimentation tank is connected with the aerobic tank through the mud discharge pipe 4 and the mud discharge pump . A sludge return pipe 6 is arranged in the treatment tank, and the sludge return pipe 6 is connected with the aerobic tank.

[0029] The treatment tank grid 5 is divide...

Embodiment 2

[0030] Embodiment 2: the treatment of waste water

[0031] In the examples, the method for measuring dissolved oxygen and orp value is to use an online automatic monitoring instrument, and the dissolved oxygen is measured using the HJ / T99-2003 (photoelectric method) standard. The orp measuring instrument is produced by Beijing Tianjian Innovation Instrument Co., Ltd., model: TORP10AC.

[0032] The hydrolytic acidification sedimentation tank system of Example 1 was used. The waste water produced by the grit chamber enters the hydrolytic acidification sedimentation tank through the waste water pipeline, the water inlet channel 8 and the water distribution channel 1, and is transported to the bottom of the treatment tank through the water distribution pipe 2, and the dissolved oxygen of the pool is controlled at 0.2 mg / L and the orp value -200mv, so that the process of hydrolysis and acidification can occur, the sewage after 5 hours of hydrolysis and acidification in this pool f...

Embodiment 3

[0034] Embodiment 3: the treatment of waste water

[0035] The waste water produced by the grit chamber enters the hydrolytic acidification sedimentation tank through the waste water pipeline, the water inlet channel 8 and the water distribution channel 1, and is transported to the bottom of the pool through the water distribution pipe 2, and the dissolved oxygen in the pool is controlled at 0.5mg / L and the orp value is -100mv, so that The process of hydrolysis and acidification can take place. After 2 hours of hydrolysis and acidification in this pool, the sewage flows out from the upper outlet channel 3 of the hydrolysis and acidification sedimentation tank, and enters the next aerobic pool through the pipeline. The sludge return pipe 6 is connected to the aerobic tank, and the aerobic tank intermittently returns the sludge to the hydrolytic acidification sedimentation tank for 3 hours a day, and the reflux ratio is 0.2:1.

[0036] The phosphorus removal effect of this hydro...

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Abstract

The invention provides a hydrolysis acidizing settling pond which comprises at least one treatment pond cell, wherein each treatment pond cell is internally provided with a water distribution pipe and a mud discharging pipe, the hydrolysis acidizing settling pond is connected with an aerobic pond through the mud discharging pipe, each treatment pond cell is internally provided with one water distribution pipe, the water distribution pipe is communicated with the bottom of the treatment pond cell, and the treatment pond cell is internally provided with a mud return pipe which is connected with the aerobic pond. According to the invention, one DN40 thin pipe replaces multiple DN40 thin pipes originally arranged in one treatment pond cell and the pipe is thickened; a water distribution pipe at the bottom of the pond is omitted, the water distribution pipe is vertically communicated with the bottom of the pond and cannot be blocked; partial mud returning from the aerobic pond enters the hydrolysis acidizing settling pond and fully releases phosphorus in an anoxia condition, and therefore the aerobic treatment effect is improved greatly.

Description

technical field [0001] The invention belongs to the field of waste water treatment, in particular to a device for treating waste water using an activated sludge method and an application thereof. Background technique [0002] Anaerobic hydrolytic acidification is an effective means to treat high-concentration and refractory organic wastewater. Ordinary upflow hydrolytic acidification tanks are usually used between grit chambers and aerobic biochemical treatment units in municipal wastewater treatment projects. The facilities are as follows figure 1 . The main treatment principle of the traditional upflow hydrolysis acidification sedimentation tank is: [0003] After entering the treatment facility, the wastewater from the grit chamber is transported to the bottom of the pool through the water distribution pipe of the water distribution channel, and then transported to different positions of the hydrolysis tank by setting different lengths of the water distribution pipe, so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30
Inventor 李星文刘俊红王旭李斌李子言
Owner THUNIP CORP LTD
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