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Highly-efficient aeration biological filter applied to advanced printing and dyeing wastewater treatment and treatment method thereof

A biological aerated filter and advanced treatment technology, applied in textile industry wastewater treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problem of unreasonable filter unit structure design and inability to guarantee wastewater treatment Effect, waste water effect is not ideal and other problems, to achieve the effect of improving biodegradability, improving operation effect, and improving biodegradability

Inactive Publication Date: 2013-02-06
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing biological aerated filter has an unsatisfactory effect on treating wastewater
Because the existing biological aerated filter does not pre-treat the wastewater entering the filter unit in advance, it cannot effectively reduce the SS and colloidal substances entering the filter unit. At the same time, the structural design of the filter unit of the existing biological aerated filter is also Unreasonable, so the existing biological aerated filter and its treatment methods cannot guarantee the treatment effect on wastewater

Method used

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  • Highly-efficient aeration biological filter applied to advanced printing and dyeing wastewater treatment and treatment method thereof
  • Highly-efficient aeration biological filter applied to advanced printing and dyeing wastewater treatment and treatment method thereof
  • Highly-efficient aeration biological filter applied to advanced printing and dyeing wastewater treatment and treatment method thereof

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Experimental program
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Effect test

Embodiment 1

[0035] A yarn dyeing Co., Ltd. 1500m 3 / d After anaerobic and aerobic biological treatment of yarn dyeing wastewater, the effluent of the sedimentation tank contains a large amount of colloidal substances and a small amount of unseparated SS. The specific water quality is shown in Table 1.

[0036] Table 1 Water quality indicators of yarn dyeing wastewater after anaerobic and aerobic treatment

[0037]

[0038] The effluent from the sedimentation tank first enters the micro-oxygen folded plate composite packing unit 1, and utilizes the good mass transfer function of the composite packing unit 1 to promote the biological contact between the wastewater and the microorganisms attached to the composite packing. Through biosorption, the SS and colloidal pollutants in the wastewater are intercepted, and the micro-oxygen state of the system (DO<0.5mg / L) provides conditions for the hydrolysis and acidification of microorganisms, thereby improving the biochemical properties of the...

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Abstract

The invention discloses a highly-efficient aeration biological filter applied to advanced printing and dyeing wastewater treatment, comprising a filtering material unit and at least one composite filler unit, wherein the filtering material unit is connected with the composite filler unit. The composite filler unit comprises a front aeration system, a composite filler area and a folding plate, and the front aeration system and the folding plate are arranged in the composite filler area; and the filtering material unit comprises a water feeding and distributing groove, an upper layer aeration system, a lower layer aeration system, a filtering material area, a back flushing system and a filtrate collecting chamber. The advanced printing and dyeing wastewater treatment method in an aeration biological filter comprises the steps: the wastewater enters into the composite filler unit and then into the filtering material unit to be treated.

Description

technical field [0001] The invention relates to the advanced treatment of printing and dyeing wastewater, especially the removal of chroma, colloidal pollutants and SS in printing and dyeing wastewater. Specifically, it is a high-efficiency aerated biological filter applied to the advanced treatment of printing and dyeing wastewater and its treatment method. The invention is suitable for advanced treatment of waste water in textile printing and dyeing enterprises, energy saving and emission reduction, and reduces operating costs of enterprises; the invention is also suitable for advanced treatment of other waste water, realizing the reuse of waste water under low-cost conditions. Background technique [0002] The structure of the biological aerated filter is basically the same as that of the ordinary fast filter, the difference is that an aeration system is added to the lower part or bottom of the biological aerated filter. However, the existing biological aerated filter ha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F103/30
Inventor 杨波李方田晴张国华
Owner DONGHUA UNIV
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