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High efficient printing and dyeing wastewater flocculating device and applications thereof

A printing and dyeing wastewater and flocculation device technology, which is applied in the direction of flocculation/sedimentation water/sewage treatment, water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problem of low decolorization efficiency of a single flocculant and poor concentration accuracy of prepared liquid , can not be continuously automatic dispensing and other problems, to achieve the effect of compact structure, narrow molecular weight distribution, and weak negative charge

Inactive Publication Date: 2019-01-15
DONGJIANG ENVIRONMENTAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above technical problems, the present invention provides a high-efficiency flocculation device for printing and dyeing wastewater and its application, which solves the problems of continuous automatic dispensing, poor precision of the concentration of the prepared liquid, difficult adjustment, low decolorization efficiency of a single flocculant, and poor flocculation effect

Method used

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  • High efficient printing and dyeing wastewater flocculating device and applications thereof
  • High efficient printing and dyeing wastewater flocculating device and applications thereof
  • High efficient printing and dyeing wastewater flocculating device and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as Figure 1-5 As shown, a high-efficiency flocculation device for printing and dyeing wastewater includes a pool body 1, and a coagulation cylinder 2 is vertically arranged in the pool body 1, and the coagulation cylinder 2 separates the pool body 1 into a water purification area and a water purification area. In the muddy water area, the bottom and top of the muddy water area are respectively equipped with a heater 3 and a condensation separation assembly 4. The upper wall of the coagulation cylinder 2 is provided with a condensate outlet 21, and the water purification area is provided with a liquid inlet Pipe 5 and drug inlet tube 6, the liquid outlet of the liquid inlet tube 5 and the drug outlet of the drug inlet tube 6 are respectively communicated with the coagulation cylinder 2, and the drug inlet of the drug inlet tube 6 is connected to There is a quantitative dosing device 7, the side wall of the pool body 1 is provided with a water purification port 1a, ...

Embodiment 2

[0035] Embodiment 2 uses efficient flocculation device to process the method I of printing and dyeing wastewater

[0036] Step 1. Lead the printing and dyeing wastewater into the coagulation cylinder 2 through the liquid inlet pipe 5, and start the stirring device;

[0037] Step 2: Fill the flocculant I into each material storage circular tank 73 through the medicine feeding pipe 6, and the solution enters the mixing tank 71 through the water agent pipe 75, and add 300mg flocculant I to 1L of waste water to control the feeding tray The number of turns of 72 rotations is used for quantitative dosing. After the flocculant is dissolved in the dissolving solution, it is introduced into the coagulation cylinder 2 through the drug feeding pipe 6;

[0038] The flocculant I is prepared by the following method: add formaldehyde aqueous solution with a mass fraction of 35% into the reactor, stir and add hydrochloric acid, adjust the pH value of the system to 4, and then add The volume-...

Embodiment 3

[0041] Embodiment 3 Application of high-efficiency flocculation device to process the method II of printing and dyeing wastewater

[0042] Step 1. Lead the printing and dyeing wastewater into the coagulation cylinder 2 through the liquid inlet pipe 5, and start the stirring device;

[0043] Step 2: Fill the flocculant II into each material storage circular tank 73 through the drug feed pipe 6, and the solution enters the mixing tank 71 through the water agent pipe 75, and add 300mg flocculant II according to 1L of waste water, and control the feeding pan 72 turns to carry out quantitative dosing, after the flocculant is dissolved in the solution, it is introduced into the coagulation cylinder 2 through the drug feeding pipe 6;

[0044] The flocculant II is prepared by the following method: add formaldehyde aqueous solution with a mass fraction of 45% into the reactor, stir and add hydrochloric acid, adjust the pH value of the system to 5, and then add The volume-mass ratio of...

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PUM

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Abstract

The invention discloses a high efficient printing and dyeing wastewater flocculating device, which comprises a tank and a coagulating cylinder. The coagulating cylinder is vertically arranged in the tank and divides the tank into a purified water area and a muddy water area. The bottom and the top of the muddy water area are respectively provided with a heater and a condensation separation assembly. The upper wall of the coagulating cylinder is provided with a condensed fluid outlet. The purified water area is provided with a liquid inlet pipe and a medicament inlet pipe. The liquid outlet ofthe liquid inlet pipe and the medicament outlet of the medicament inlet pipe are communicated with the coagulating cylinder. The medicament inlet of the medicament inlet pipe is connected to a quantitative dosing device. Compared with the prior art, the structure is compact; the medicaments are added quantitatively and automatically based on the wastewater amount; after precipitation, purified water is heated and converted into water steam, the steam is condensed, then the liquid is introduced into the purified water area and discharged from the purified water outlet of the tank; a filter screen is provided to prevent precipitates from entering the purified water area when the liquid level of the muddy water area is too high; and the device has the advantages that the precipitation speed is quick, the discoloring effect is good, and the removal rate of total phosphorus and COD is high.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a high-efficiency flocculation device for printing and dyeing wastewater and its application. Background technique [0002] my country is a big country in the textile printing and dyeing industry. The textile printing and dyeing industry not only consumes a lot of water, but also discharges a lot of wastewater. At present, the total discharge of printing and dyeing wastewater in my country accounts for about 35% of the entire industrial wastewater. Printing and dyeing wastewater is difficult to treat because of its complex composition, high chroma, and high organic matter content, and the fact that various dyes and auxiliaries used in the printing and dyeing process are highly toxic and difficult to be biodegraded. In recent years, with the rapid development of the printing and dyeing industry, a large number of new dyes and dyeing auxiliaries have been developed an...

Claims

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Application Information

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IPC IPC(8): C02F1/54C02F1/56
CPCC02F1/5263C02F1/5281C02F1/54C02F1/56
Inventor 谈际满洪海宣蓉缪松峰
Owner DONGJIANG ENVIRONMENTAL
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