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Hydrolysis acidification precipitation tank and applications thereof

A hydrolysis, acidification and sedimentation tank technology, applied in the field of wastewater treatment, can solve problems such as poor phosphorus removal effect, easy blockage, and stagnant water in the factory area, and achieve the effect of improving the effect and preventing blockage.

Inactive Publication Date: 2016-04-27
QINGDAO SEIICHI INTPROP SERVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 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 acidification precipitation tank and applications thereof
  • Hydrolysis acidification precipitation tank and applications thereof
  • Hydrolysis acidification precipitation tank and applications 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 embodiment, the method of 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., type

[0032] No.: TORP10AC.

[0033] 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 i...

Embodiment 3

[0036] Embodiment 3: the treatment of waste water

[0037] 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.

[0038] The phosphorus removal effect of this hydro...

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Abstract

The present invention provides a hydrolysis acidification precipitation tank, which comprises at least a treatment tank grid, wherein a water distribution pipe and a mud discharge pipe are arranged inside the treatment tank grid, the hydrolysis acidification precipitation tank is connected to an aerobic tank through the mud discharge pipe, water distribution pipes are arranged in each treatment grid, and are communicated to the bottom portions of the treatment tank grids, and a sludge reflux pipe is arranged inside the tank grid and is connected to the aerobic tank. According to the present invention, the original multiple DN 40 thin pipe in one grid is changed into the one thickened pipeline; the water distribution pipeline on the tank bottom is canceled, and the water distribution pipe is vertically communicated to the tank bottom, such that the water distribution pipe clogging is eliminated; and the partial sludge refluxed from the aerobic tank enters the hydrolysis acidification tank, and the sludge is subjected to complete phosphorus release under the anoxic condition so as to substantially improve the aerobic treatment effect.

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 . [0003] The main treatment principle of the traditional upflow hydrolysis acidification sedimentation tank is: [0004] 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30
Inventor 徐聪
Owner QINGDAO SEIICHI INTPROP SERVICE CO LTD
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