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Printing and dyeing wastewater treatment technique

A technology for treating process, printing and dyeing wastewater, applied in textile industry wastewater treatment, multi-stage water treatment, water/sewage treatment and other directions, can solve the problems of unstable effluent quality, high energy consumption, short flow, etc., and achieve stable treatment effect. , the effect of high pollutant concentration and deep chromaticity

Active Publication Date: 2017-01-11
HUAFANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, dead angles and short flows are prone to occur, and the energy consumption of the treatment is high, and the effluent quality is unstable

Method used

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  • Printing and dyeing wastewater treatment technique
  • Printing and dyeing wastewater treatment technique

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] Embodiment 1 A kind of printing and dyeing wastewater treatment process, such as figure 1 As shown, the specific steps are as follows:

[0076] (1) The desizing wastewater first enters the adjustment tank, and acid is added to adjust the pH, so that the pH is between 6-8, and the pump is lifted to the anaerobic reactor. Under the action of anaerobic bacteria, the organic matter in the wastewater is converted into methane , carbon dioxide and water, and at the same time, the refractory macromolecular organic matter in the wastewater is opened and broken to become a small molecular organic matter, and then the supernatant flows to the regulating sedimentation tank by itself;

[0077] (2) After the other comprehensive wastewater except desizing wastewater is collected through the pipeline and the anaerobic desizing water enters the regulating sedimentation tank, it settles for 8 hours, and the supernatant is lifted to the anaerobic reaction tank by the pump. The function ...

Embodiment 2

[0082] Embodiment 2 handles the final sludge that printing and dyeing wastewater treatment process of the present invention produces

[0083] The final sludge produced by the whole treatment process is sent to the sludge thickening tank, dehydrated by the dehydrator, and the dehydrated sludge is incinerated without secondary pollution; the supernatant from the sludge thickening tank and the dehydrator come out The water is sent to the regulating sedimentation tank for treatment.

Embodiment 3

[0084] The anaerobic reactor in the treatment process of embodiment 3 of the present invention

[0085] Such as figure 2 As shown, the anaerobic reactor includes a precipitation zone 1, an upper layer three-phase separation zone 2, a lower layer three-phase separation zone 3 and a swirling water distribution zone 4 from top to bottom. There are two gas-liquid separators 6 and a pulse water distributor 7 above the area 1, and the pulse water distribution pipe 8 is provided at the bottom of the pulse water distributor 7, and the pulse water distribution pipe 8 extends to the reflection cone 9 at the bottom of the swirl water distribution area 4 Inside, the top of the pulse water distributor 7 is connected to the water inlet pipe 10, the upper three-phase separation zone 2 is provided with an upper three-phase separator 11, the lower three-phase separation zone 3 is provided with a lower three-phase separator 12, and the upper three-phase The separator 11 is connected to the ga...

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Abstract

The invention relates to a printing and dyeing wastewater treatment technique. The printing and dyeing wastewater treatment technique includes: feeding desizing wastewater into an adjusting pool prior to lifting to an anaerobic reactor through a pump, and allowing supernatant to flow into a settling pool after the desizing wastewater is treated in the anaerobic reactor; allowing comprehensive wastewater to enter the adjusting pool for settling via a pipeline, lifting the supernatant to the anaerobic reactor via the pump, and allowing the wastewater subjected to treatment of the anaerobic reactor to flow into an A / O pool via a primary settling pool; allowing the wastewater to flow into a secondary settling pool via the A / O pool, arranging a micro-electrolytic reactor in a water outlet of the secondary settling pool, allowing the treated wastewater to flow into a dosing pool and then into a tertiary pool via the dosing pool, sending sludge in the tertiary pool into the adjusting settling pool, and allowing the supernatant to enter an integrated XHOC pool, then a wastewater end settling pool prior to a sand filter tank via an oxidation pond, wherein treated water flowing from the sand filter tank is standard discharge water. The printing and dyeing wastewater treatment technique has the advantages of low energy consumption, high efficiency and stable effluent quality, and the technique is suitable for treatment of organic pollutants with various concentrations, simple in operation and convenient in running.

Description

technical field [0001] A printing and dyeing wastewater treatment process belongs to the technical field of sewage treatment. Background technique [0002] Printing and dyeing wastewater is wastewater discharged from printing and dyeing factories that mainly process cotton, hemp, chemical fibers and their blended products. Printing and dyeing wastewater has a large amount of water, 100-200 tons of water is consumed per ton of textile printing and dyeing, and 80-90% of it becomes wastewater. Textile printing and dyeing wastewater has the characteristics of large water volume, high content of organic pollutants, high alkalinity, and large changes in water quality. It is one of the most difficult industrial wastewater to treat. Impurities, sand substances, inorganic salts, etc. [0003] The main treatment objects of printing and dyeing wastewater are alkalinity, organic matter that is not easy to biodegrade or the production degradation rate is extremely slow, dyes and pigmen...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F103/30C02F101/30
CPCC02F1/001C02F1/46104C02F1/52C02F1/66C02F1/722C02F3/28C02F3/302C02F3/34C02F9/00C02F2003/003C02F2101/16C02F2101/30C02F2101/308C02F2103/30C02F2203/006C02F2301/046C02F2301/08C02F2303/14C02F2305/026Y02E50/30
Inventor 王力民罗维新李春光贾红斌孙国庆李志海吕建品周勇
Owner HUAFANG
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