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Hydrolysis acidizing settling pond and application 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.

Active Publication Date: 2014-05-28
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] Example 1: Hydrolysis acidification sedimentation tank

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

[0029] The treatment pool grid 5 is divided into upper a...

Embodiment 2

[0030] Example 2: Treatment of wastewater

[0031] In the embodiment, the method for measuring the dissolved oxygen and orp value is to use the online automatic monitoring instrument to measure, the dissolved oxygen is measured using the HJ / T99-2003 (photoelectric method) standard, and 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 generated in the grit tank enters the hydrolytic acidification sedimentation tank through the waste water pipe, the 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 to control the dissolved oxygen 0.2mg / L and the orp value of the tank -200mv, so that the hydrolysis and acidification process can take place. After 5 hours of hydrolysis and acidification in the tank, the sewage flows out from the...

Embodiment 3

[0034] Example 3: Treatment of wastewater

[0035] The waste water generated in the grit tank enters the hydrolytic acidification sedimentation tank through the waste water pipe, the water inlet 8 and the water distribution channel 1, and is transported to the bottom of the tank through the water distribution pipe 2. The dissolved oxygen of the tank is controlled to be 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 the pond, the sewage flows out from the upper outlet channel 3 of the hydrolysis acidification sedimentation tank, and enters the next aerobic tank 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, and the return flow is 3 hours a day, and the return ratio is 0.2:1.

[0036] The phosphorus removal effect of the hydrolysis acidific...

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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 wastewater treatment, and specifically relates to a device for treating wastewater using an activated sludge method and its application. Background technique [0002] Anaerobic hydrolysis acidification is an effective means to treat high-concentration, refractory organic wastewater. Ordinary upflow hydrolysis and acidification tanks are usually used in the grit tank and aerobic biochemical treatment unit of municipal wastewater treatment projects. The facilities are as follows figure 1 . The main treatment principles of traditional flow hydrolysis acidification sedimentation tank are: [0003] After entering the treatment facility, the waste water from the grit tank is transported to the bottom of the tank through the water distribution pipe of the water distribution channel, and then transported to different positions of the hydrolysis tank through different lengths of the water distribution pipe, so as to achieve the p...

Claims

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Application Information

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Patent Type & Authority Patents(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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