Blue Calico Printing and Dyeing Craft in Tongxiang

BLUE calico is a traditional Chinese handmade printed fabric.Dyed in indigo,it has a blue base with white patterns.Tongxiang,a city in east China’s Zhejiang Province,is well-known for printing and dyeing blue calico.The craft boasts a history of a millennium in the town with its heyday in the Tang(618-907)and Song(960-1279)dynasties.The technique was widely applied by the general public during the Ming and Qing dynasties(1368-1911).

Green and healthy innovation is the future of dyeing and printing industry

In the past year,the downside risks of the world economy increased,and China's domestic economy was impacted by multiple factors such as pandemic situation and extreme weather disasters,and the uncertainty of the dyeing and printing industry increased significantly.Last year,the production and benefit of the industry showed an obviously downward trend.The export of major dyeing and printing products has maintained growth,and the export performance has been good,but the rate has gradually declined.Generally speaking,in 2023,the industry and enterprises are stillfacing considerable production and operation pressure.

Desalting?Reversible dyeing?Dyeing and printing industry ushers in big changes!

Textile dyeing is the second-largest polluter of water worldwide,not including salt use.After the salt is used,it is transported to landfills or the ocean.Oceans have increased 0.5%salinity over past 10 years.Textile dyeing produces 2.8%of Global GHG,because of its huge demand of power from its operations.Now,the world’s dyeing and printing industry energy saving,consumption reduction,emission reduction,green,safety requirements are increasing.Green dyeing and printing have become the mainstream of global dyeing and printing industry in future.The continuous innovation and improvement of textile dyeing process and dyestuff is of extraordinary significance in today’s increasingly severe energy situation.

Biodegradability of terephthalic acid in terylene artificial silk printing and dyeing wastewater

As the characteristic pollutant, terephthalic acid(TA)was in charge of 40%—78% of the total COD of terylene artificial silk printing and dyeing wastewater(TPW-water). The studies on biodegradability of TA were conducted in a serial of activated sludge reactors with TPW-water. TA appeared to be readily biodegradable with removal efficiency over 96.5% under aerobic conditions, hardly biodegradable with removal efficiency below 10% under anoxic conditions and slowly biodegradable with a turnover between 31.4% and 56.0% under anaerobic conditions. TA also accounted for the majority of BOD in TPW-water. The process combined by anoxic, anaerobic and aerobic activated sludge reactor was suitable for TA degradation and TPW-water treatment. Further, the aerobic process was essentially much more effective than the anaerobic or anoxic one to degrade TA in TPW-water.

Stability of expanded granular sludge bed process for terylene artificial silk printing and dyeing wastewater treatment

Terylene artificial silk printing and dyeing wastewater(TPD wastewater), containing averaged 710 mg/L terephthalic acid(TA) as the main carbon source and the character pollutant, was subjected to expanded granular sludge bed(EGSB) process. The stability of the EGSB process was firstly conducted by laboratory experiment. TA ionization was the predominated factor influencing the acid-base balance of the system. High concentration of TA in wastewater resulted in sufficient buffering capacity to neutralize the volatile fatty acids(VFA) generated from substrate degradation and provided strong base for anaerobic system to resist the pH decrease below 6.5. VFA and UFA caused almost no inhibition on the anaerobic process and biogas production except that pH was below 6.35 and VFA was at its maximum value. Along with the granulating of the activated sludge, the efficiency of organic removal and production rate of biogas increased gradually and became more stable. After start-up, the efficiency of COD removal increased to 57%—64%, pH stabilized in a range of 7.99—8.04, and production rate of biogas was relatively high and stable. Sludge granulating, suitable influent of pH and loading were responsible for the EGSB stability. The variation of VFA concentration only resulted in neglectable rebound of pH, and the inhibition from VFA could be ignored in EGSB. The EGSB reactor was stable for TPD wastewater treatment.

Dyeing and printing wastewater treatment using fly-ash coated with chitosan

Printing and dyeing industry is a considerable source of environmental contamination. In this study treatment of printing and dyeing wastewater with a new type of sewage treatment agent, fly-ash coated with chitosan particles （FCCP）, was examined. The effects ofpH, stirring time, sedimentation time and temperature on color, COD, turbidity and NH3-N removal were determined. The optimum dosage of FCCP and the influence of individual factors on removal efficiency were tested. The optimum parameters determined using the L16 （45） orthogonal experiment were as follows： FCCP （weight ratio of chitosan to fly-ash 1：6） dosage, 4 g.L^-1; temperature, 35℃; pH, 4. The stirring time and sedimentation time were 20 min and 5 h, respectively. Under these optimum conditions, the color, COD and NH3-N removal ratios were 97%, 80% and 75%, respectively.

Design and Operation of the Printing and Dyeing Wastewater Treatment Project by Combination of Coagulation Sedimentation - Hydrolytic Acidification with Aeration Tank - Biological Aerated Filter - Active Sand Filter

In order to protect quality of Baiyangdian surface water and Gaoyang groundwater,the project is applied to process printing and dyeing wastewater that contains complicated compositions,high concentrations of organics and SS,and lots of pollutants difficult to degrade by microorganism. The process and operating parameters of project are optimized and debugged,and its economic and environmental benefits are analyzed.The results show that the process of coagulation sedimentation-hydrolytic acidification with aeration tank-biological aerated filter-active sand filter is applied in Gaoyang Sewage Treatment Plant. The design scale of sewage treatment plant is 120000 m^3/d. The influent is as following: COD is 669mg/L; SS is 424mg/L; NH_3-N is 8.83mg/L; TP is 6.03mg/L. After the process,the best removal rates of COD,SS,NH_3-N and TP are 93. 5%,98. 8%,97. 1% and 96. 2%,respectively. The various indexes of effluent water complied with standard A of the first order in Pollutants Emission Standard of Urban Wastewater Treatment Plant( GB 18918-2002). The processing cost is only 0. 807 yuan/m^3. As a result,the project construction and operation not only improve the environment,but also promote regional economic development. Process design and operating parameters provide an important reference value for the printing and dyeing wastewater treatment industry.

Application of New Modified Bentonite in Decolorization of Simulated Printing and Dyeing Wastewater

The problem of colority control of printing and dyeing wastewater has become a technical problem that plagues related companies.Bentonite is an adsorbent with excellent properties.Modification of bentonite with environmentally friendly substances can improve its decolorization performance.In this experiment,the simulated printing and dyeing wastewater was taken as the control object,and the bentonite was modified with environmentally friendly materials such as sodium carboxymethyl cellulose(CMC)and lignin to prepare a new modified bentonite;then the modified bentonite was used to adsorb the simulated wastewater to reduce the water colority and COD;finally the relevant design of the adsorption process was made.Results indicate that M lignin∶M CMC∶M original bentonite=1∶2∶97 had the optimum treatment effect,the optimum modification temperature was 30℃ and the modification time was 4 h;the optimum conditions for the adsorption process were:pH=5,temperature=30℃,reaction time=60 min,dosage=0.05 g of modified bentonite/mL simulated dye solution.The final removal rate of colority and COD reached 95.0% and 98.2%,respectively.Compared with the original bentonite,this new modified bentonite has greater adsorption capacity and thus has greater application value.

Dyeing and printing industry:Scientific and technical progress,energy-saving and environmental protection have achieved balanced development Interview with Chen Zhihua,president of China Dyeing and Printing Association

The general operation of dyeing and printing industry maintained a trend of slow stabilization during the 12th Five-Year Program period with obvious results in science and technology,management,energy conservation and environmental protection as well as the balanced development of the industries.Chen Zhihua,president of China Dyeing and Printing Association(CDPA),said that the dyeing and printing industry has in-

Shanghai Cotton Spinning Weaving Dyeing & Printing United Corporation

The Shanghai Cotton Spinning Weaving Dveing and Printing United Corporation is an economic entity organized by 51 enterprises under three corporations controlled by the Shanghai Textile Bureau for the production of namebrand products as its mainstay, dyeing, printing and foreign trade. With 1.2 million ring spindles,

Basic situation of economic operation of dyeing and printing industry in 2019

In 2019,the economic situation at home and abroad is still complicated and severe,the global economic growth has slowed down,and domestic and foreign risks and challenges facing the dyeing and printing industry have increased significantly.Faced with multiple pressures,the dyeing and printing industry adhered to the supply-side structural reform as the main line,changed the development mode,optimized the industrial structure,and converted the growth momentum,achieving relatively stable development.

Operation analysis of dyeing and printing industry in H1 of 2020

In the first half of 2020,the global spread of the COVID-19 pandemic has had a significant impact on my country’s dyeing and printing industry.The main economic indicators of production,investment,quality and efficiency of dyeing and printing enterprises in the first and second quarters have declined significantly compared with the same period last year,and the industry has shown a negative growth trend.Although some indicators of the dyeing and printing industry have shown signs of recovery since the second quarter,the current production and operation pressure of enterprises is still prominent,and insufficient demand is still the biggest problem that plagues enterprises.The industry’s stable operation throughout the year is facing greater challenges.

Economic operation of printing and dyeing industry in the first half of 2022

In the first half of 2022,the development environment of printing and dyeing industry is more complicated and severe.The conflict between Russia and Ukraine continues to lead to a sharp rise in energy prices such as oil and natural gas,and printing and dyeing enterprises are under great pressure on the cost side;The frequent spread of domestic pandemics has adversely affectedthe normal production and operation of the industry,and at the same time.

The economic operation of dyeing and printing industry shows resilience from January to December 2021

In 2021,in the face of complex and changeable situa­tion at home and abroad,China’s dyeing and printing enter­prises actively adjusted development strategy,dyeing and printing cloth production maintained a good growth mo­mentum,the main products export was further expanded than the pre-pandemic period,the main economic indica­tors continued to recover,enterprise profitability improved significantly,the industry has shown the strong resilience,the 14th Five-Year Plan got off to a good start.However,it should be noted that the current global pandemic is still not under effective control,commodity prices are still at a high level although there has been a decline,and the textile and apparel industry chain and the supply chain is still not smooth enough,and the foundation for a full recovery of the industry still needs to be further consolidated.

The total profit of dyeing and printing industry decreased by 101.80%year-on-year from January to February

Affected by the COVID-19,the dyeing and printing enterprises postponed the resumption of work from January to February 2020,and the logistics was not smooth.The production and operation of enterprises were affected.The output,main business income and profits dropped sharply compared with the same period last year.The pressure of the operation of the industry increased further,and the development to high quality was more urgent.From January to February 2020,the output of dyed and printed fabrics of dyeing and printing enterprises above designated size was 4.913 billion meters,a year-on-year decrease of 22.42%.

Operation analysis of dyeing and printing industry in 2020

In 2020,COVID-19 continued to spread.China’s dyeing and printing industry was hard hit by the pandemic,and the industry still maintained a positive development trend.By the end of 2020,the capacity utilization of dyeing and printing enterprises has basically returned to the level of the same period in 2019,but the business operation and profitability of the company are still significantly lower than the same period in 2019,and the industry is still facing greater pressure to return to the prepandemic level.

Dyeing and Printing Industry (1-9,2005)

Although the Dyeing and Printing industry has experienced several international disputes, an in- crease in raw material prices and a two percent rise in the value of RMB since January 2005, it has remained a steady increase in production as well as profit making, and the quality of products has met its

Four driving forces for the advance of dyeing and printing equipment

The year of 2017 saw an obvious improvement in the sector of China’s textile machinery industry and an increase of the main business income and gross profit.Besides,foreign trade in textile machinery products grew in number.

Procion MX Dyes在彩色蜡染制作工艺中的应用研究

文章以彩色蜡染制作工艺为研究对象,将文献研究法与实践相结合,从画蜡技巧、上色与固色原理、艺术表现技巧等方面解读Procion MX Dyes在彩色蜡染制作工艺中的应用原则和技巧。借助Procion MX Dyes的应用,提升了彩色蜡染的艺术表现力和使用价值,为蜡染产业的发展提供了可行性参考。

Atexco:Focus on digital inkjet printing for 30 years,the choice of global 2000+customers

Honghua Digital Printing Technology Co.,Ltd.(Atexco)was established in 1992 and is the China National Digital Printing Engineering Technology Center approved by the Ministry of Science and Technology of China.We are first listed company in the textile digital printing industry.Atexco has always focused on independent research and innovation,and is committed to helping traditional industries transform and upgrade through digital printing technology.Atexco now becomes a global group company that integrates equipment manufacturing,software applications,consumables production,printing and dyeing processes,intelligent factory management systems,and after-sales services.Atexco has never stopped on the path of development,and still actively integrates upstream and downstream resources under current market environment.We has now comprehensively laid out intelligent pattern design,digital printing and dyeing,automatic sewing,online quality testing and other applications.We hope to contribute our strength and knowledge to the industry and bring the ultimate service experience to our customers through our thirty years of accumulation in the industry.