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Treatment process of printing and dyeing wastewater and chemical wastewater and structures thereof

A technology for chemical wastewater, printing and dyeing wastewater, applied in the fields of environmental pollution and treatment, resource recovery and utilization, can solve the problems of high energy consumption, complex water quality components, and difficulty in popularizing wastewater treatment and reuse processes, and achieves low chromaticity, COD good removal effect

Inactive Publication Date: 2009-03-25
许良英
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AI Technical Summary

Problems solved by technology

[0005] 1. Combined treatment of wastewater generated in each process of dyeing and finishing will make the water quality components more complex, increase the difficulty of treatment, and increase the treatment cost
It belongs to the model of combined treatment, mixed adjustment, step-by-step reduction, and standard discharge, which is likely to cause high cost, no return, and inexhaustible consequences
It is no longer suitable for the current situation.
[0006] 2. Long technological process, many structures, high energy consumption and high cost of treatment, especially the high hydraulic requirements for backwashing, large flushing water volume, and large floor area, making it difficult to popularize this wastewater treatment and reuse process
[0007] 3. The regeneration of activated carbon is difficult, which also increases the operating cost

Method used

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  • Treatment process of printing and dyeing wastewater and chemical wastewater and structures thereof
  • Treatment process of printing and dyeing wastewater and chemical wastewater and structures thereof
  • Treatment process of printing and dyeing wastewater and chemical wastewater and structures thereof

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Embodiment Construction

[0047] Such as Figure 7 A treatment process for printing and dyeing wastewater and chemical wastewater, which separates the wastewater into colorless and colored wastewater and treats them separately, respectively realizing the reuse of colorless wastewater after advanced treatment and the standard discharge of colored wastewater:

[0048] Such as figure 2 As shown, the colorless wastewater flows into the colorless regulating tank and then flows into the sedimentation tank. The coagulation agent is added to the water inlet of the sedimentation tank, and the strong acid coagulation process is adopted. The coagulant agent added at the entrance of the sedimentation tank is sulfuric acid and polyaluminum iron. , so that the pH value of sewage is controlled within the range of 1-2. The coagulated sediment is discharged from the bottom of the sedimentation tank into the sludge tank, and hydrogen peroxide and TiO are added to the outlet of the sedimentation tank 2 , to irradiate ...

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Abstract

The invention relates to a treatment technique of printing waste water and chemical industry waste water and a structure thereof. The treatment technique carries out colorless and colored flow diversion to the waste water, then carries out treatment respectively, realizes the recycling of the colorless waste water after advanced treatment and standardized discharge of the colored waste water respectively, fully utilizes the original equipment and fields for waste water treatment on the basis of not adding structures, carries out reconstruction to an adjusting tank, widens a fire-fighting tank, adds UV / TiO2Fenton treatment, fully utilizes the original idle equipment, combines the improvement of the technique, completes two waste water treatment techniques in the original one set of waste water treating device, and simultaneously reaches the recycling of the colorless waste water after advanced treatment and standardized discharge of the colored waste water.

Description

Technical field: [0001] The invention relates to a sewage treatment method and its corresponding sewage treatment structure, especially for the treatment process of printing and dyeing wastewater and chemical wastewater and its structure, belonging to the fields of environmental pollution and treatment, resource recovery and utilization. Background technique: [0002] The printing and dyeing industry is a major user of water and pollutants. Printing and dyeing enterprises generally have a complete sewage treatment system. After the sewage is treated up to the standard, it enters the urban sewage treatment pipe network or directly discharges into the surface water body. However, due to the increasing shortage and serious pollution of water resources, it is very necessary to reuse printing and dyeing wastewater after advanced treatment, no matter from the perspective of enterprise cost or the development requirements of social environmental protection. At present, printing an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F1/52C02F1/70C02F1/72C02F1/32C02F3/30
Inventor 许良英田恬王明芳宋锡根曹侃
Owner 许良英
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