A reaction tank and a method for treating printing and dyeing wastewater using the reaction tank

A technology of printing and dyeing wastewater and reaction tank, applied in chemical instruments and methods, textile industry wastewater treatment, filtration treatment, etc., can solve the problems of accelerating acid-base neutralization reaction in an orderly manner, poor effect of auxiliary agents, single effect, etc. Achieve the effect of accelerating the rate of acid-base neutralization reaction, increasing vibration and reducing the content of organic matter

Active Publication Date: 2020-05-08
浙江求寔新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the above-mentioned stirring paddle can only play the role of mixing and stirring, so as to speed up the orderly progress of the acid-base neutralization reaction
Not only the effect is relatively single, but also because the agitator can only rotate in one direction (clockwise or counterclockwise) when mixing, the effect of the additive is not good when mixing, so a new technical solution needs to be proposed to solve the above question

Method used

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  • A reaction tank and a method for treating printing and dyeing wastewater using the reaction tank
  • A reaction tank and a method for treating printing and dyeing wastewater using the reaction tank
  • A reaction tank and a method for treating printing and dyeing wastewater using the reaction tank

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Embodiment 1: a kind of reaction tank 15, such as figure 1 and figure 2 As shown, it includes a pool body 1 , a water inlet pipe 2 and a drain pipe 3 arranged on both sides of the pool body 1 . Among them, the pool body 1 is inclined downward from the water inlet pipe 2 to the drain pipe 3 and is provided with seven steps 4, each step 4 is bent upwards and installed with a number of arc-shaped stainless steel baffles 5, wherein the arc-shaped stainless steel baffles 5 The cross-section is arc-shaped (see Figure 4 ). And the above-mentioned arc-shaped stainless steel baffles 5 are alternately arranged on the same level of steps 4 . Therefore, the water body (that is, the printing and dyeing wastewater) will flow from the direction of the inlet pipe 2 to the drain pipe 3, and the water body will increase the flow rate after the water body overcomes the height difference when it flows down. Sheet 5, the existence of arc-shaped stainless steel baffle 5 can block the n...

Embodiment 2

[0055] Embodiment 2: a kind of reaction tank 15, the difference with embodiment 1 is: as Figure 5 and Figure 6 As shown, in order to speed up the acid-base neutralization reaction in the water body, the lower end of the arc-shaped stainless steel baffle 5 is hinged at the turning point of the step 4 through the rotating shaft 6, and the rotating shaft 6 is sleeved for driving the arc-shaped stainless steel baffle 5 toward Follow the torsion spring 7 that water inlet pipe 2 direction moves. On the one hand, it has the blocking effect of other arc-shaped stainless steel baffles 5; The baffle plate 8 can be turned down around the rotating shaft 6 to drain excess water, and then reversely turned under the action of the torsion spring 7, and during the above-mentioned turning process, the arc-shaped stainless steel baffle plate 8 will generate lateral vibrations, thereby It will produce shocks in the flow direction of the water body, which will help to accelerate the acid-base ...

Embodiment 3

[0057] Embodiment 3: a kind of method that adopts this reaction tank 15 to control printing and dyeing wastewater, such as figure 1 shown, including the following steps,

[0058] Step S1, the printing and dyeing wastewater is discharged into the raw water pool 11 through the dyeing vat sewage pipe for preliminary heat dissipation, and the pH value of the raw water is detected and recorded at the same time.

[0059] Step S2: Drain the water body after preliminary heat dissipation in the raw water pool 11 into the grid water collection well 12, and drain the water body after removing suspended matter into the regulating pool 13 for temporary storage.

[0060] Step S3: Lift the water in the adjustment tank 13 into the air flotation tank 14 through a water pump, add polyferric flocculant and dilute sulfuric acid, adjust the pH to 5-6.5, and remove the suspended matter on the surface with a mud scraper after sufficient aeration.

[0061] Step S4, the lower clear liquid obtained in...

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Abstract

The invention discloses a reaction tank and method for treating printing and dyeing wastewater through the reaction tank, and belongs to the technical field of printing and dyeing water treatment. Thereaction tank is technically characterized in that the reaction tank comprises a tank body, and a water inlet pipe and a water discharge pipe arranged on the two sides of the tank body, wherein the tank body is downward inclined in the direction from the water inlet pipe to the water discharge pipe and is provided with a plurality of layers of steps; a plurality of arc stainless steel barrier areupsweptly arranged on each layer of step. The method comprises preliminary heat dissipation, suspended matter removal, air flotation, preliminary precipitation and secondary precipitation, and then the printing and dyeing wastewater can be discharged into a municipal pipe or serve as domestic water. The reaction tank increases the oxygen content of water, and quickens the rate of acid-base neutralization reaction in printing and dyeing wastewater; the treatment method can reduce the content of organic matter in water, increases the oxygen content of water, and is beneficial to environment protection and water quality improvement.

Description

technical field [0001] The invention belongs to the technical field of printing and dyeing water treatment, and more specifically relates to a reaction tank and a method for treating printing and dyeing wastewater by using the reaction tank. Background technique [0002] In the textile printing and dyeing process, a dyeing vat refers to a large vat used to dye yarn, which can be used for yarn or cloth dyeing and post-finishing and finalizing equipment. When used as dyeing water for dark-colored fabrics or yarns, the requirements for water quality are relatively low. At this time, the printing and dyeing water used only needs to remove the color in the printing and dyeing wastewater (ie raw water), and remove dye molecules and suspended impurities. No thorough decontamination is required. [0003] At present, when the existing reaction pool is carrying out the acid-base neutralization reaction, the stirring paddle is generally used for stirring to promote the rapid progress ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F11/122C02F103/30C02F101/30C02F101/20
CPCC02F1/001C02F1/24C02F1/5236C02F1/66C02F3/02C02F9/00C02F11/122C02F2001/007C02F2101/20C02F2101/30C02F2103/30C02F2301/08
Inventor 张伟薛中
Owner 浙江求寔新材料股份有限公司
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