Production integrated treatment of textile wastewater by closing raw material cycles

2005 ◽  
Vol 52 (10-11) ◽  
pp. 299-307
Author(s):  
R. Krull
Keyword(s):  
Textile Wastewater ◽  
Development Project ◽  
Integrated Treatment ◽  
Raw Material ◽  
Municipal Sewage ◽  
Preliminary Treatment ◽  
Finishing Process ◽  
Material Cycles ◽  
Textile Finishing ◽  
Working Day

A method for the in-house treatment of partial wastewater flows and the recycling of treated process water into the textile finishing process was developed in order to recycle effluents from textile finishing industry and feed them back into the production process. The method is based on a two-stage biological anaerobic–aerobic process to split colouring wastewater agents and to degrade organic sub-stances contained in the water as well as a chemical stage to remove the remaining color of the water with the help of ozone. In the framework of a research and development project a demonstration plant for a treatment capacity of 1440m3 per working day was installed and started in a textile finishing company. At the plant, a wastewater flow and a recycling flow are treated separately in two different treatment lanes. Approximately 40% of the total wastewater flows, i.e. 576m3/d are treated in the wastewater lane, and a maximum of 60% of total wastewater, i.e. 864m3/d are treated in the recycling lane. Thanks to the preliminary treatment of wastewater flows, which are discharged into the municipal sewage works, a reduction of average COD levels in the sewage works effluents could be achieved.

The finishing of textiles goes digital!

2021 ◽  
Vol 64 (2) ◽  
pp. 72-73
Author(s):  
Tobias Petzold
Keyword(s):  
Digital Technologies ◽  
Interdisciplinary Team ◽  
Project Team ◽  
Finishing Process ◽  
Textile Finishing ◽  
Chemical Textile

The focus of the work of the interdisciplinary team of the funded futureTex project digiTex-Pro is on the development of a digital textile finishing process, which based on digital technologies for chemical textile treatment. The project team consists of the German companies Zschimmer & Schwarz Mohsdorf GmbH & Co. KG, Burgstädt, Suchy Textilmaschinenbau GmbH, Korbußen, Textilausrüstung Pfand GmbH, Lengenfeld, and druckprozess GmbH & Co. KG, Eisenach, as well as the STFI, Chemnitz.

scholarly journals Study of promises for the use of ultrasound in the technology of secondary benefication of processing wastes

2018 ◽  
Vol 56 ◽  
pp. 03015
Author(s):  
Olga Voronova ◽  
Lidiya Kienko
Keyword(s):  
Operating Regime ◽  
Raw Material ◽  
Preliminary Treatment ◽  
Flotation Reagents ◽  
Mining Company ◽  
Mineral Particles ◽  
Processing Wastes ◽  
Sample Testing ◽  
Fluorite Content ◽  
Ore District

The results of the study, aimed at designing of benefication technology of mine processing wastes of Voznesenskiy ore district, are presented in this paper. By the expert appraisals, the amount of tailings dumps of the Yaroslavskaya Mining Company is estimated to be more than 30 million tons. Sample testing has shown that fluorite content varies from 13% to 23%, calcite - up to 14%, and zinc - in the range of 0.4-0.6%. The research was conducted with tailing samples containing 20.7% of CaF2 and 10.2% of CaCO3. Mineral grains of the secondary raw material were examined for their surface state and a package of necessary preliminary operations, which provide an efficient material - flotation reagents interaction, was determined. It has been established that extraction of fluorite to concentrates that would match existing requirements is possible in principle. The use of ultrasonic treatment of material in its preparation for flotation is conditioned by an effective desorption of films of different nature from mineral particles. The suggested scheme of fluorite flotation involves preliminary treatment of raw material by ultrasound with dumping of released mud fractions. The optimal operating regime allows obtaining concentrates of higher quality than it is under usual technology without the ultrasonic exposure. In this process, the extraction of fluorite to a concentrate with 94.47% of CaF2 increases up to 61.11%, which is higher by 2.96% against the original studies.

Laser Cutting of Small Diameter Nitinol Tube

2012 ◽  
Vol 729 ◽  
pp. 460-463
Author(s):  
Péter Nagy ◽  
János Dobránszky
Keyword(s):  
Laser Cutting ◽  
Applied Pressure ◽  
Small Diameter ◽  
Cutting Parameters ◽  
Development Project ◽  
Raw Material ◽  
Speed Up ◽  
Inner Diameter ◽  
Ar Gas ◽  
The Impact

In this article the complex research and development project of the laser cutting micromachining of nitinol alloys are shown. The laser cutting parameters of the 1.04 mm inner diameter and 0.1 mm wall thickness nitinol tubes are also shown. The laser cutting parameters of micromachining and the cut surface of nitinol tubes are summarized when 3 mJ pulse energy, 0.02 ms pulse duration, 6 bar Ar gas pressure, 3000 Hz frequency, 10 mm/s rotation speed and 5 mm/s2 speed-up were used. The effect of the laser cutting to the raw material is characterized by microstructural and micromechanical examinations. A detailed description is given of the energy input by laser beam machining. The pulse and the impact of the applied pressure parameters of the gas to the raw material are also shown.

Addition of large amount of municipal sewage sludge as raw material in cement clinker production

2017 ◽  
Vol 24 (36) ◽  
pp. 27862-27869 ◽  
Author(s):  
Minrui Huang ◽  
Huajun Feng ◽  
Na Li ◽  
Dongsheng Shen ◽  
Yuyang Zhou ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Raw Material ◽  
Cement Clinker ◽  
Municipal Sewage ◽  
Municipal Sewage Sludge ◽  
Clinker Production

Research on Relationship between Fabric Breaking Strength and Antibacterial Property about Cactus Silver Nanoparticles Treated on Silk Fabric

2011 ◽  
Vol 332-334 ◽  
pp. 116-120
Author(s):  
Hong Chao Miao ◽  
Bo Jun Xi ◽  
Hong Lin ◽  
Yu Yue Chen
Keyword(s):  
Silver Nanoparticles ◽  
Antibacterial Property ◽  
Breaking Strength ◽  
Raw Material ◽  
Added Value ◽  
Silk Fabric ◽  
Finishing Process ◽  
Dipping Temperature ◽  
Silk Fabrics ◽  
Natural Fabrics

Silk fabrics are highly popular with people for their excellent properties, with science and living standards progress, the natural and no added finishing method is pursuited by people especially, functional textile products become more and more popular. In this paper, silver nanoparticles were deoxygenated by using natural cactus solution. This silver nanaparticles were prepared under the unpolluted environment. The basic raw material is natural selection, preparation method is simple, non-polluting, eco-friendly and to address the reliability of a better way. Natural fabrics treated with natural plant, not only improve the added value of the product, but also achieve natural of the fabric, meet the requirements of the modern people. This research product the cactus silver nanoparticles silk fabric, demonstrated that the cactus solution can fix the nano-silver uniform on the surface of the silk fabric. Studied the antibacterial property of the silk fabric after finishing, discussed the fabric breaking strength and antibacterial property of silk fabric under different concentration、temperature and time. Finally, the best finishing process obtained is: 0.01mol/L silver ammonia is 2mL, the extract from cactus is 50mL, liquor ratio is 1:50, dipping temperature is 60°C, dipping time is 60min.

Effect of Dyeing and Finishing Process on Anti-Ultraviolet Properties of PA6 Knitted Fabric

2013 ◽  
Vol 785-786 ◽  
pp. 651-655
Author(s):  
Wen Qin Du ◽  
Xiao Liang liu ◽  
Xin Chen
Keyword(s):  
Raw Material ◽  
Knitted Fabric ◽  
Concentration Increase ◽  
Knitted Fabrics ◽  
Finishing Process ◽  
Higher Temperature

This experiment used PA6 anti-ultraviolet properties fabric which specifications were adding a content of 0.3% nanomaterial 70D/24F SD DTY and adding a content of 0.7% nanomaterial 70D/48F SD DTY as raw material. After weaving, we analysis the influence on dye concentration and postboarding process for anti-ultraviolet properties of PA6 knitted fabrics. The result shows that the more dye concentration increase, the better anti-ultraviolet properties of fabric raise and the higher temperature or the slower speed of the postboarding, the faster anti-ultraviolet properties of fabric decline.

scholarly journals SYNTHESIS AND PROPERTIES OF ION EXCHANGERS DERIVED FROM NON-WOOD CELLULOSE

2020 ◽  
Vol 63 (11) ◽  
pp. 88-95
Author(s):  
Dmitry A. Yelatontsev ◽  
Anatoly P. Mukhachev
Keyword(s):  
Large Scale ◽  
Juglans Regia ◽  
Total Yield ◽  
Exchange Capacity ◽  
Raw Material ◽  
Phosphate Ester ◽  
Static Exchange Capacity ◽  
Preliminary Treatment ◽  
Ion Exchangers ◽  
Cation Exchangers

A rational scheme for the processing of large-scale agro-industrial waste – walnut shells Juglans Regia L. and apricot kernels Prunus Armeniaca L. was proposed. At first stage, the raw material was delignificated using liquid ammonia to remove hemicelluloses and lignin. Isolated non-wood pulp is chemically modifying to increase sorption and ion exchange properties. For the synthesis of anion exchangers, cellulose was aminated using pyridine or trimethylamine after preliminary treatment consequentially with formalin and C2H5OH in HCl medium. As a result, we obtained high and weakly-basic ion exchangers with nitrogen content of 10.3–11.5% and high exchange capacity towards various classes of inorganic anions. For synthesis of cation exchangers, cellulose was treated with solution consisting of 20% H3PO4, 40% CO(NH2)2, and 40% H2O. Consequently, we obtained phosphorus-containing high-acidic cation exchangers with exchange capacity towards heavy metal of 5.5–8.6 mmol∙cm–3. Both types of ion exchangers have a high capacity towards uranium: anion exchanger – 4.25 mmol∙cm–3 and cation exchanger – 4.94 mmol∙cm–3, respectively. Average total yield of ion exchangers related to weight of air-dry feedstock was 90%. Synthesized ion exchangers characterized by IR spectroscopy. Presence of amine functional groups –NH2 in aminated cellulose and phosphate ester groups –OPO(OH)2 in phosphorylated cellulose was established. Specific surface area and total static exchange capacity of synthesized ion exchangers were established. An environmentally friendly method for the disposal of spent solutions from the synthesis of cation exchangers was proposed. It allows getting a liquid complex fertilizer containing 17% N and 13.9% P2O5. Usage of this fertilizer for grain crops feeding increases plants length by 40–75%, as well as overall biomass increase by 20–30%.

scholarly journals Laminasyon Tekniği İle Üretilen Sim İpliklerden Örülen Kumaşların Tekstil Terbiye İşlemlerine Karşı Dayanımının İncelenmesi

2020 ◽  
Vol 27 (120) ◽  
pp. 260-270
Author(s):  
Elif YILMAZ ◽  
Sevda ALTAŞ ◽  
Nildeniz ADMAN ◽  
Burçin YALÇIN ÖZKAN
Keyword(s):  
Production Process ◽  
High Temperatures ◽  
Production Costs ◽  
Raw Material ◽  
Post Processing ◽  
Sale Price ◽  
Polyester Fabrics ◽  
Alkaline Environments ◽  
Textile Finishing ◽  
Finishing Processes

The pre-finishing, finishing, and dyeing processes applied to the fabrics are carried out at high temperatures, in acidic or alkaline environments. Conventional metalized yarns which are produced by metalized yarn companies cannot resist these conditions that change due to raw material type. Metalized parts exfoliate when exposed to these conditions, and shiny appearance disappears completely. Therefore, in order to be a solution for this problem for the products that the use of metalized yarn is required, companies produce fabrics by using metalized yarns that were colored in bobbin form and choose proper application conditions for metalized yarns. However, because this solution increases production time and workmanship, the production costs and the product’s sale price increase correspondingly. The use of metalized yarns with untreated fiber is more advantageous than the method mentioned above for companies in terms of both cost and ease of production process. For this purpose, in this study, the resistance of metalized yarns that were produced by using lamination technique was tested against the chemicals which metalized yarns can be exposed during textile finishing processes, and the appearances of the fabrics were evaluated. Because metalized yarns are commonly used in the production of cotton and polyester fabrics, finishing processes that are applied to cotton and polyester fabrics were applied to metalized fabrics in a textile finishing laboratory. Then post-processing appearances of fabrics were evaluated subjectively.

scholarly journals THE EFFECT OF PRETREATMENT OF MICROWAVE HEATING ON EFFICIENCY OF HYDROLYSIS TIME AND α-CELLULOSIC CHARACTERISTICS OF PALM OIL WASTE BIOMASS

2018 ◽  
Vol 20 (1) ◽  
pp. 21
Author(s):  
Fitriani Kasim ◽  
Khaswar Syamsu ◽  
Dwi Setyaningsih ◽  
Prayoga Suryadarma ◽  
Sudirman Sudirman
Keyword(s):  
Microwave Heating ◽  
Palm Oil ◽  
Raw Material ◽  
Preliminary Treatment ◽  
Waste Biomass ◽  
Hydrolysis Time ◽  
Mixed Acid ◽  
Empty Fruit Bunches ◽  
Hydrolysis Process ◽  
Better Than

THE EFFECT OF PRETREATMENT OF MICROWAVE HEATING ON EFFICIENCY OF HYDROLYSIS TIME AND α-CELLULOSIC CHARACTERISTICS OF PALM OIL WASTE BIOMASS. This research is underlied by the needs of various industries for alpha cellulose, especially for the needs of raw material for cellulose nanocristalline, from fiber derived from the most potential waste biomass in Indonesia, namely oil palm empty fruit bunches (OPEFB) and mesocarp fibers. This study aims to find out the effect of pretreatment by microwave heating on the efficiency of hydrolysis time and alpha cellulose characteristics from palm oil waste biomass. To produce alpha cellulose, acid hydrolysis is commonly used with the multistage pulping process method, where the fiber is dissolved into HNO3 mixed acid, 3.5% and NaNO2, heated at a temperature of 90 oC for 2 hours, hydrolyzed and delignified to remove lignin and bleached, then separated from betha and gamma cellulose by dissolving it with NaOH 17.5%. In this study, a preliminary treatment (pretreatment) with microwave heating was carried out before the fiber was hydrolyzed so that the hydrolysis process was more efficient without reducing the characteristics of the alpha cellulose produced. The research results showed that pretreatment with microwave heating can streamline the hydrolysis time from 2 hours to 1 hour, without reducing its characteristics, where the degree of fiber crystallinity (XRD) and the yield of alpha cellulose remain high. Microwave heating with 450 watts for 5 minutes (treatment A) is better than 300 watts of heating for 10 minutes (treatment B). From the results of the study, it can be concluded that the pretreatment with microwave heating can streamline the hydrolysis time of the fiber to obtain alpha cellulose and increase the yield of the produced alpha cellulose.

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