Check patentability & draft patents in minutes with Patsnap Eureka AI!

Economical denitrification treatment system for printing and dyeing wastewater

A treatment system, printing and dyeing wastewater technology, applied in textile industry wastewater treatment, multi-stage water treatment, water/sewage treatment, etc., can solve the problems of wasting operating costs, prolonging treatment time, failing to meet discharge standards, etc., and achieve mud-water mixing effect Improvement, reduction of processing load, effect of good processing effect

Inactive Publication Date: 2019-07-26
杭州恒美环保设备有限公司
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The first purpose of the present invention is to overcome that the printing and dyeing wastewater treatment system in the prior art cannot carry out targeted treatment of printing and dyeing wastewater with different ammonia nitrogen concentrations, or can only treat ordinary printing and dyeing wastewater, when the influent is printing and dyeing wastewater with high ammonia nitrogen or the entire system is set to a high-load operation state suitable for the treatment of high ammonia nitrogen printing and dyeing wastewater, which leads to prolonging the processing time, reducing the processing efficiency, and wasting operating costs when processing ordinary printing and dyeing wastewater. Provide a An economical printing and dyeing wastewater denitrification treatment system, according to the different processing techniques of printing and dyeing factories, it can carry out separate pretreatment of the discharged sewage, greatly reduce the concentration of characteristic pollutants in the pretreatment stage, and then discharge it into the comprehensive treatment system, and finally realize the discharge of sewage up to standard Purpose, good treatment effect, strong pertinence, and more economical and energy-saving
[0007] The second purpose of the present invention is to overcome the poor surface hydrophilicity of the filler used in the prior art when using the biofilm method to treat printing and dyeing wastewater, and the slow inoculation speed of microorganisms, resulting in low treatment efficiency. To solve the problem of filler dosage, provide an economical printing and dyeing wastewater denitrification treatment system, improve the hydrophilicity of the filler in the biofilm treatment unit and the microbial inoculation speed, improve the treatment efficiency, reduce the dosage of filler, and reduce the treatment cost

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Economical denitrification treatment system for printing and dyeing wastewater
  • Economical denitrification treatment system for printing and dyeing wastewater
  • Economical denitrification treatment system for printing and dyeing wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] The pulse anaerobic tank and hydrolytic acidification tank use 235m 3 and 256m 3 The combined filler; the first A / O biochemical pool and the anoxic section of the second A / O biochemical pool each add 200m 3 The modified polyurethane filler, the preparation method of the modified polyurethane filler is:

[0077] Dimensions 30×30×30mm, density 0.04g / cm 3Soak the polyurethane filler in 3% sodium hydroxide solution for 1 hour, then repeatedly wash it with deionized water until the pH of the cleaning solution is 7.2, and dry it at 50°C for 3 hours to obtain a surface-clean polyurethane filler; use the working gas as a volume ratio of 1 :1 O 2 and N 2 The surface-clean polyurethane filler is treated in a low-temperature plasma atmosphere with a treatment power of 600W and a treatment time of 10 minutes; after treatment, the product obtained is immersed in an 8% hydrogen peroxide solution, and the ultraviolet light is turned on, heated to 50°C, and reacted until the soluti...

Embodiment 2

[0079] The pulse anaerobic tank and hydrolytic acidification tank use 235m 3 and 256m 3 The combined filler; the first A / O biochemical pool and the anoxic section of the second A / O biochemical pool each add 200m 3 The modified polyurethane filler, the preparation method of the modified polyurethane filler is:

[0080] Dimensions 15×15×15mm, density 0.03g / cm 3 Soak the polyurethane filler in 5% sodium hydroxide solution for 3 hours, then repeatedly wash it with deionized water until the pH of the cleaning solution is 7.8, and dry it at 70°C for 1 hour to obtain a polyurethane filler with a clean surface; use the working gas as a volume ratio of 1 :3O 2 and N 2 The surface-clean polyurethane filler is treated in a low-temperature plasma atmosphere with a treatment power of 800W and a treatment time of 30min; Stop when the hydrogen oxide concentration is 0.90%; centrifuge the obtained product to dry the surface water stains, wash repeatedly with deionized water, and air-dry ...

Embodiment 3

[0082] The pulse anaerobic tank and hydrolytic acidification tank use 235m 3 and 256m 3 The combined filler; the first A / O biochemical pool and the anoxic section of the second A / O biochemical pool each add 200m 3 The modified polyurethane filler, the preparation method of the modified polyurethane filler is:

[0083] Dimensions 20×20×20mm, density 0.02g / cm 3 The polyurethane filler was soaked in 4% sodium hydroxide solution for 2 hours, then repeatedly washed with deionized water until the pH of the cleaning solution was 7.5, and dried at 60°C for 2 hours to obtain a surface-clean polyurethane filler; the working gas was used as a volume ratio of 1 :2O 2 and N 2 The surface-clean polyurethane filler is treated in a low-temperature plasma atmosphere with a treatment power of 700W and a treatment time of 20min; Stop when the concentration of hydrogen oxide is 0.94%. Centrifuge the obtained product to dry the surface water stains, wash it repeatedly with deionized water, an...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Densityaaaaaaaaaa
Densityaaaaaaaaaa
Login to View More

Abstract

The invention relates to the field of wastewater treatment, and discloses an economical denitrification treatment system for printing and dyeing wastewater. The economical denitrification treatment system comprises a high ammonia-nitrogen wastewater pretreatment section and a comprehensive treatment section. The high ammonia-nitrogen wastewater pretreatment section comprises a printing adjustmenttank, a pulse anaerobic jar, a first A / O biochemical tank and an intermediate settling tank which are connected in sequence through a pipeline. The comprehensive treatment section comprises a comprehensive adjustment tank, a primary settling tank, a hydrolysis and acidification tank, a second A / O biochemical tank, a secondary settling tank, a final settling tank and a discharge tank which are connected in sequence through a pipeline. The intermediate settling tank in the high ammonia-nitrogen wastewater pretreatment section is connected with the primary settling tank of the comprehensive treatment section through a pipeline. The economical denitrification treatment system has the advantages that sewage with different ammonia-nitrogen concentrations discharged by printing and dyeing enterprises are dispensed, high pertinence is achieved, the treatment load of the comprehensive treatment section is reduced, and the good treatment effect on common printing and dyeing wastewater and high ammonia-nitrogen printing and dyeing wastewater is achieved; the whole system does not need to be kept in a high-load operation state suitable for treating the high ammonia-nitrogen printing and dyeingwastewater, thereby being economical and energy saving.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to an economical printing and dyeing wastewater denitrification treatment system. Background technique [0002] Printing and dyeing wastewater is the main source of pollution in the textile industry. Printing and dyeing wastewater not only has a large amount of discharge, but also has a high degree of chroma and pollution. With the application of fiber products, pulp, dyes, detergents, chemical auxiliaries and finishing agents, etc., the composition of wastewater is constantly changing, and the treatment is more difficult. . [0003] Printing and dyeing wastewater has the characteristics of large water volume, high content of organic pollutants, many refractory substances, high chroma, and complex components. According to different sources of pollutants, it can be divided into dyeing wastewater, printing wastewater, alkali reduction wastewater, and desizing wastewater. Wastewat...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C02F9/14C02F103/30C02F101/16
CPCC02F1/001C02F1/5236C02F1/56C02F3/302C02F9/00C02F2101/16C02F2103/30C02F2301/08
Inventor 彭凌吉来东奇庄国平
Owner 杭州恒美环保设备有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com