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Established in 2001, Puyang Zhong Yuan Restar Petroleum Equipment Co.,Ltd, “RSD” for short, is Henan’s high-tech enterprise with intellectual property advantages and independent legal person qualification. With registered capital of RMB 50 million, the Company has two subsidiaries-Henan Restar Separation Equipment Technology Co., Ltd We are mainly specialized in R&D, production and service of various intelligent separation and control systems in oil&gas drilling,engineering environmental protection and mining industries.We always take the lead in Chinese market shares of drilling fluid shale shaker for many years. Our products have been exported more than 20 countries and always extensively praised by customers. We are Class I network supplier of Sinopec,CNPC and CNOOC and registered supplier of ONGC, OIL India,KOC. High quality and international standard products make us gain many Large-scale drilling fluids recycling systems for Saudi Aramco and Gazprom projects.

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Textile dyeing industry an environmental hazard
Textile dyeing industry an environmental hazard

have a high impact on the ,wastewater, quality. Natural dyestuffs require large quantities of water for ,dyeing,. (Almost equal to or double that of the fiber’s own wei- ght). About 80 percent of the dyestuffs stay on the fabric, while the rest go down the drain. Consequently natural dyes prepared from wild plants and lichens can have a

14 Industrial Wastewater Treatment Principals and Ideas
14 Industrial Wastewater Treatment Principals and Ideas

For example, the dye factory discharges both ,acidic wastewater, and alkaline ,wastewater,. Due to the difference in fabrics and dyes, the pollutants and pollution effects of textile printing and ,dyeing wastewater, will be very different. Even the ,wastewater, discharged from a set of production unit may contain several pollutants at the same time.

A New Strategy for Treating a Cotton Dyeing Wastewater ...
A New Strategy for Treating a Cotton Dyeing Wastewater ...

2.1 Synthetic Cotton ,Dyeing Wastewater, Preparation As mentioned above, a real ,wastewater, was not used in this work because its characteristics change dramatically from day to day. So, a synthetic effluent was prepared in accordance with the information presented elsewhere (Rodrigues et al., 2012 a).

US20130256218A1 - Printing and dyeing wastewater treatment …
US20130256218A1 - Printing and dyeing wastewater treatment …

A ,printing and dyeing wastewater treatment and reuse apparatus, includes a coarse filter, a regulation pool, a hydraulic sieve, a desulfurization pool, a nanocatalytic electrolyzer, a flocculation pool, a flocculation tank, a settling pool, a flotation device, a biochemical pool, a secondary settling pool, a secondary nanocatalytic electrolyzer, a fine filter, a compressor, a nanomembrane …

Mordants and Natural Dyeing The Great Debate | Alpenglow Yarn
Mordants and Natural Dyeing The Great Debate | Alpenglow Yarn

11/11/2014, · As a brief aside, if anyone reads info out there that says vinegar or citric acid is a mordant, don’t trust the source as someone who understands science – these substances modify the pH, lowering it to make the solution more ,acidic, (protein fibres like ,acidic, conditions, and acid dyes are called acid dyes because to dye protein fibres, they require ,acidic, conditions, the dyes themselves ...

Indigo Dye Is Affecting the Water Supply in India | The ...
Indigo Dye Is Affecting the Water Supply in India | The ...

12/4/2019, · Mordants can be just ,acidic,, not necessarily toxic, but most companies choose to use mordant with aluminum and chromium. Both of these can cause great damage to the ecosystem. Factory ,wastewater, can poison rivers, killing plants, animals and poisoning drinking water for the people of India.

Mordants and Natural Dyeing The Great Debate | Alpenglow Yarn
Mordants and Natural Dyeing The Great Debate | Alpenglow Yarn

11/11/2014, · As a brief aside, if anyone reads info out there that says vinegar or citric acid is a mordant, don’t trust the source as someone who understands science – these substances modify the pH, lowering it to make the solution more ,acidic, (protein fibres like ,acidic, conditions, and acid dyes are called acid dyes because to dye protein fibres, they require ,acidic, conditions, the dyes …

Magnesium Hydroxide - Applied to Dyeing Wastewater ...
Magnesium Hydroxide - Applied to Dyeing Wastewater ...

For black ,wastewater, with a pH of 9-10, a suspended solids concentration of 100-200mg/L, a color of 150-250, a ,dyeing, component of direct light blue, direct ash, ,dyeing, and finishing auxiliaries, using magnesium hydroxide Decolorization treatment, analysis of the effect of solid-liquid separation method, magnesium salt addition amount, pH value, etc. on the decolorization effect.

14 Industrial Wastewater Treatment Principals and Ideas
14 Industrial Wastewater Treatment Principals and Ideas

For example, the dye factory discharges both ,acidic wastewater, and alkaline ,wastewater,. Due to the difference in fabrics and dyes, the pollutants and pollution effects of textile printing and ,dyeing wastewater, will be very different. Even the ,wastewater, discharged from a set of production unit may contain several pollutants at the same time.

Removal of Dyes from Textile Industrial Wastewater using ...
Removal of Dyes from Textile Industrial Wastewater using ...

Wastewater, containing dyes is very difficult to treat, since the dyes are recalcitrant organic molecules, resistant to aerobic digestion, ... Tai-Lee Hu (1996) stated that adsorption of reactive dyes by bacterial cells is significant particularly under ,acidic, conditions. Mohan, S.V.and Karthikeyan, J., ...

Decolorization of Dyeing Wastewater Using Polymeric ...
Decolorization of Dyeing Wastewater Using Polymeric ...

29/2/2012, · The ,wastewater, produced by a reactive ,dyeing, contains [2,3]: (i) hydrolyzed reactive dyes not fixed on the substrate, representing 20-30% of the reactive dyes applied (on average 2 g/L) (this residual amount is responsible for the coloration of the effluents and cannot be recycled); (ii) ,dyeing, auxiliaries or organic substances, which are non-recyclable and responsible for the …

Decolorization of dyeing wastewater and characterization ...
Decolorization of dyeing wastewater and characterization ...

Dyeing wastewater, from the textile printing and ,dyeing, industry can cause aesthetical problems and impede light penetration, which greatly upsets biological processes in surface water (Rajkumar & Kim 2006; Santhy & Selvapathy 2006; Gul & Silah 2014).In addition, due to its high color and large amount of chemical oxygen demand, ,dyeing wastewater, is considered as a considerable source of ...

14 Industrial Wastewater Treatment Principals and Ideas
14 Industrial Wastewater Treatment Principals and Ideas

For example, the dye factory discharges both ,acidic wastewater, and alkaline ,wastewater,. Due to the difference in fabrics and dyes, the pollutants and pollution effects of textile printing and ,dyeing wastewater, will be very different. Even the ,wastewater, discharged from a set of production unit may contain several pollutants at the same time.

(PDF) Ozonation of Textile Dyeing Wastewater - A Review
(PDF) Ozonation of Textile Dyeing Wastewater - A Review

The ozonation of synthetic ,wastewater, containing azo dye Acid Red 14 (AR 14) was investigated in a high-throughput microporous tube-in-tube microchannel reactor.

A New Strategy for Treating a Cotton Dyeing Wastewater ...
A New Strategy for Treating a Cotton Dyeing Wastewater ...

2.1 Synthetic Cotton ,Dyeing Wastewater, Preparation As mentioned above, a real ,wastewater, was not used in this work because its characteristics change dramatically from day to day. So, a synthetic effluent was prepared in accordance with the information presented elsewhere (Rodrigues et al., 2012 a).

Textile Wastewater Treatment: A Critical Review
Textile Wastewater Treatment: A Critical Review

discharge huge amounts of highly colored wastewater as the uptake of these dyes by fabrics is very poor. This highly colored textile wastewater severely affects photosynthetic function in plant but also has an adverse effect on aquatic life due to low light penetration and oxygen consumption. It may also be lethal

Reduction Clearing Agent| Dyeing Process | Manufacturers ...
Reduction Clearing Agent| Dyeing Process | Manufacturers ...

Enables to treat substrate after ,dyeing, in ,acidic, medium, thus saving neutralization step which leads to save time, water, stream, power & labour. As there is no need to add alkali to the dyebath or to the freshclearing bath, or to acidify the polyester after the alkalinetreatment, less time, energy, water and chemicals are required andthe ,wastewater, is much cleaner.

Poultry keratin based decolorants for dyeing wastewater ...
Poultry keratin based decolorants for dyeing wastewater ...

acidic dyeing wastewater,. In contrast, the results for MKA were completely different, with the optimum performance obtained in the neutral to alkaline range (pH from 6 to 12), indicating that MKA was suitable for treating neutral or alkaline ,wastewater,. When the pH was lower than the isoelectric point of KA, its amine groups were protonized to

Poultry keratin based decolorants for dyeing wastewater ...
Poultry keratin based decolorants for dyeing wastewater ...

acidic dyeing wastewater,. In contrast, the results for MKA were completely different, with the optimum performance obtained in the neutral to alkaline range (pH from 6 to 12), indicating that MKA was suitable for treating neutral or alkaline ,wastewater,. When the pH was lower than the isoelectric point of KA, its amine groups were protonized to

Removal of Dyes from Textile Industrial Wastewater using ...
Removal of Dyes from Textile Industrial Wastewater using ...

Wastewater, containing dyes is very difficult to treat, since the dyes are recalcitrant organic molecules, resistant to aerobic digestion, ... Tai-Lee Hu (1996) stated that adsorption of reactive dyes by bacterial cells is significant particularly under ,acidic, conditions. Mohan, S.V.and Karthikeyan, J., ...

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