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Micro-electrolysis pretreatment device of printing and dyeing wastewater, and device thereof

A pretreatment device, printing and dyeing wastewater technology, applied in water/sewage treatment, water treatment parameter control, water/sewage treatment equipment, etc., can solve problems such as difficult to achieve effects, achieve fast removal rate, inhibit passivation and oxygen competition The role of cathode electrons, the effect of fast electrochemical reaction

Pending Publication Date: 2017-08-04
江苏艾特克环境工程设计研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, for some high-concentration macromolecular organic pollutant wastewater and textile printing and dyeing wastewater containing refractory organic matter, the micro-electrolysis process disclosed today is still difficult to achieve satisfactory results as a pretreatment method.

Method used

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  • Micro-electrolysis pretreatment device of printing and dyeing wastewater, and device thereof
  • Micro-electrolysis pretreatment device of printing and dyeing wastewater, and device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] The printing and dyeing wastewater enters the primary baffled micro-electrolytic cell 1 and the secondary baffled micro-electrolytic cell 2 continuously from the water inlet 5, and the aeration is turned on to control the dissolved oxygen in the range of 0.8-1.0 mg / L, so that the printing and dyeing wastewater to be treated and The iron-carbon-aluminum particles in the baffle-type micro-electrolysis reaction cell fully contact and react, and the reaction time is 1 h.

[0053] At the same time, the pH online monitoring system monitors the pH of the solution in the baffle type micro-electrolysis reaction tank, and controls the pH range in the reaction tank to be 10-11 through an acid-base dosing device, and enters the neutralization tank 3 after reacting for 1.5 h. Use the pH online monitoring system to monitor the wastewater in the neutralization tank 3, and ensure that the pH of the effluent is 7-8 through the regulation of the acid-base dosing port, and then enter the s...

Embodiment 2

[0056] The printing and dyeing wastewater enters the primary baffled micro-electrolytic cell 1 and the secondary baffled micro-electrolytic cell 2 continuously from the water inlet 5, and the aeration is turned on to control the dissolved oxygen within the range of 0.5-0.8 mg / L, so that the printing and dyeing wastewater to be treated and The iron-carbon-aluminum particles in the baffle-type micro-electrolysis reaction cell fully contact and react, and the reaction time is 3 h.

[0057] At the same time, the pH online monitoring system monitors the pH of the solution in the baffle type micro-electrolysis reaction tank, and controls the pH range in the reaction tank to be 10-11 through an acid-base dosing device, and enters the neutralization tank 3 after reacting for 1.5 h. Use the pH online monitoring system to monitor the wastewater in the neutralization tank 3, and ensure that the pH of the effluent is 7-8 through the regulation of the acid-base dosing port 10 of the neutral...

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Abstract

A micro-electrolysis pretreatment device of printing and dyeing wastewater comprises a primary baffled micro-electrolysis cell, a secondary baffled micro-electrolysis cell, a neutralization tank and a sedimentation tank which are serially arranged, and wastewater enters a reaction tank from the bottom end through flow guiding channels arranged in the primary baffled micro-electrolysis cell, the secondary baffled micro-electrolysis cell, the neutralization tank and the sedimentation tank. The serially arranged primary and secondary baffled micro-electrolysis cells prolong the reaction time, increase the reaction space, and avoid the press hardening and channeling phenomena of a packing layer, caused by the gravity effect, under the action of the water flow and aeration; and the device can effectively remove the chroma and improve the biodegradability of printing and dyeing wastewater with high CODs, difficult degradation and poor biodegradability, greatly improves the treatment effect of the micro-electrolysis reaction, and provides good conditions for subsequent biochemical treatment.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a micro-electrolysis pretreatment process and a device for printing and dyeing wastewater. Background technique [0002] With the rapid development of the economy, the amount of wastewater discharged by industries such as chemical industry, printing and dyeing, and medicine is increasing, and the water quality is becoming more and more complicated. At present, some large-scale textile printing and dyeing enterprises in China produce mixed wastewater produced by printing and dyeing wastewater from various printing and dyeing processes, including desizing wastewater, boiling wastewater, bleaching wastewater, and mercerizing wastewater. The COD (chemical oxygen demand, chemical oxygen demand) concentration of printing and dyeing wastewater is high and the biodegradability is poor. It is difficult to achieve satisfactory treatment effect by using traditiona...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F1/463C02F101/30
CPCC02F1/46109C02F1/46176C02F1/463C02F1/467C02F2209/22C02F2209/06C02F2201/4619C02F2101/308C02F2001/46133C02F2301/028C02F2209/38
Inventor 蒋素英李俊波梅林明吴智仁王磊
Owner 江苏艾特克环境工程设计研究院有限公司
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