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System for treating printing and dyeing wastewater with activated coke adopted and process thereof

A printing and dyeing wastewater and treatment process technology, applied in the direction of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of low treatment efficiency, increase residence time, improve biochemical Sexuality, prolonging the effect of residence time

Active Publication Date: 2013-04-24
BEIJING GUODIAN FUTONG SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem solved by the present invention is that in the prior art, when the combination of processes for treating refractory organic wastewater is applied to printing and dyeing wastewater, its treatment efficiency is still low, and a printing and dyeing wastewater treatment device that can greatly reduce the COD of the effluent is provided. and its craft

Method used

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  • System for treating printing and dyeing wastewater with activated coke adopted and process thereof
  • System for treating printing and dyeing wastewater with activated coke adopted and process thereof
  • System for treating printing and dyeing wastewater with activated coke adopted and process thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0041] The system for treating printing and dyeing wastewater using activated coke described in this example is as follows: figure 1 shown, including

[0042] The hydrolytic acidification device, activated sludge tank, sedimentation tank and biological filter are connected in sequence; activated coke with a particle size range of 0.05~0.5mm is added in the hydrolysis acidification device, and the hydrolysis acidification device comes out containing The effluent of the activated coke enters the activated sludge tank again; in this embodiment, a return pipeline is arranged between the sedimentation tank and the activated sludge tank, and the sludge deposited in the sedimentation tank flows back to the activated sludge tank through the return pipeline. The activated sludge tank.

[0043] The biological filter described in this embodiment adopts the commonly used biological aerated filter in the prior art, and the spherical ceramsite with a particle diameter of 5-8mm is selected ...

Embodiment 2

[0050] The system for treating printing and dyeing wastewater using activated coke described in this example is as follows: figure 2 shown, including

[0051] The primary settling tank, hydrolytic acidification device, activated sludge tank, sedimentation tank and biological filter are connected in sequence; activated coke with a particle size range of 0.1~1mm is added in the hydrolysis acidification device, and the hydrolysis acidification device The effluent containing activated coke enters the activated sludge tank again; there is a return pipeline between the sedimentation tank and the activated sludge tank, and the sludge settled in the sedimentation tank flows back to the activated sludge tank through the return pipeline. Activated sludge pool.

[0052] The biological filter in this embodiment adopts the biological aerated filter, and the biological filter uses activated coke with a particle size of 1.0-8.0mm as the filter material, and the filter material layer height...

Embodiment 3

[0059] The system for treating printing and dyeing wastewater using activated coke described in this example is as follows: figure 2 shown, including:

[0060] The primary settling tank, hydrolytic acidification device, activated sludge tank, sedimentation tank and biological filter are connected in sequence; activated coke with a particle size range of 0.1~1mm is added in the hydrolysis acidification device, and the hydrolysis acidification device The effluent containing activated coke enters the activated sludge tank again; there is a return pipeline between the sedimentation tank and the activated sludge tank, and the sludge settled in the sedimentation tank flows back to the activated sludge tank through the return pipeline. Activated sludge pool.

[0061] The biofilter described in this embodiment adopts a biological aerated filter, and the biofilter uses activated coke with a particle size of 1.0-8.0 mm as the filter material, and the filter material layer height is 2....

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Abstract

The invention provides a system for treating printing and dyeing wastewater with activated coke adopted. The system comprises a hydrolytic acidification device, an activated sludge pool, a settling pool and a biological filter pool, wherein the hydrolytic acidification device, the activated sludge pool, the settling pool and the biological filter pool are arranged in a sequentially connected mode, activated coke is added into the hydrolytic acidification device, and discharging water with the activated coke and from the hydrolytic acidification device enters the activated sludge pool again. According to the system, the activated coke is added into the hydrolytic acidification device, the activated coke is fully mixed with the wastewater in the hydrolytic acidification device, so that standing time of recalcitrant molecules in the wastewater on the hydrolytic acidification device is improved, and efficiency of hydrolytic acidification is improved. The wastewater with the activated coke and from the hydrolytic acidification device enters the activated sludge pool again, the activated coke continues to have the function of absorption and degradation, and removal efficiency on sludge concentration and organic matter in the activated sludge pool is improved.

Description

technical field [0001] The invention belongs to the field of waste water treatment, and in particular relates to a system and a process for treating printing and dyeing waste water by using active coke. Background technique [0002] Textile printing and dyeing wastewater has the characteristics of large water volume, high organic content, high alkalinity, and large changes in water quality. It is one of the difficult industrial wastewater to treat. Especially with the development of chemical fiber fabrics and the progress of printing and dyeing finishing technology, a large amount of organic substances that are difficult to biodegrade, such as PVA size and new additives, are introduced into printing and dyeing wastewater, which further increases the difficulty of treatment. According to statistics, the residual COD in the effluent of existing sewage plants after treating printing and dyeing wastewater is generally above 100mg / L, which cannot meet the discharge requirements. ...

Claims

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Application Information

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IPC IPC(8): C02F9/14
Inventor 樊兆世滕济林胡溪禹晓磊
Owner BEIJING GUODIAN FUTONG SCI & TECH DEV
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