Specialized Decoloring Agent Water Treatment Approaches for Removal of Dyes and Pigments in Industrial Wastewater Streams

Highlights:

DCA-58 is Our Wastewater Color Remover Of BWD-01 is mainly composed of dicyandiamide formaldehyde polymer.
Super large cationic polymer being used together with PAC and PAM can wrap the pigment and organic matters in the sewage in the floccule and remove them.
It can be applied in decoloration treatment of sewage with high color fastness for various kinds industries, as textile, printing and dyeing, bleaching, papermaking, printing ink, electroplate and pigment, etc.
It is suitable for most dyeing wastewater to remove stubborn chroma.

 

• DCA-58 Water Decoloring Agent is a new type of high efficient decolorizing flocculant, It is a color removal chemical, special product for de-coloring, flocculating, CODcr decreasing and other applications used to remove the color of wastewater generated by textiles process houses and dyes industries and other fields.
• It has high color removal of dye wastewater, by providing a large number of cations, the negative charge is brought on dye molecules are neutralized instability, at the same time with DCA-58 Water Decoloring Agent by a large number of hydrolysis of flocs. Can be adsorbed dye, destabilization of the snare, from water separation, so as to achieve the purpose of bleaching.
• The colored effluents, generated by the industries, when left untreated, play havoc with reusable water resources. For process houses, in water-scarce areas, it comes as heaven-sent facilitating recycling of the industrial effluent into process water. DCA-58 Water Decoloring Agent is used to solve this problem. DCA-58 Water Decoloring Agent is specially working high performance with the dyeing wastewater containing the hydrophilic dyes (reactive dyes, acid dyes, disperse dyes, etc.), less dosage, the color clear, fast speed, high processing liquid clarification of the settlement, but also reduce the composition of COD, improve the COD removal rate.
• In papermaking, DCA-58 Water Decoloring Agent also can be used as a fixing agent in the paper processing, will be a very good performance.

• Dilutes with 10 - 40 times water and then dosed into the waste water Directly, after being mixed for several minutes, waste is precipitated or Air-floated and the water become clear
• pH index of the waste water should be adjusted to 7 - 10 for better Result
• If colority and COD are relatively high, it can be used with the help of Polyaluminum chloride to reduce treatment cost, whether polyaluminum Chloride is used before or afterwards depends on the flocculation test And the treatment process

• Water Decoloring Agent is mainly used to decolor the effluent with high colority from dyestuff plant. It is suitable to treat waste water with activated, acidic and disperse dyestuffs.
• It can be used for color removal treatment for high-colority waste water from dyestuffs plants. It is suitable to treat waste water with activated, acidic and disperse dyestuffs.
• It also can be used in the production process of paper & pulp as retention agent.

• Strong decolorization(>95%)
• Better COD removal ability
• Faster sedimentation, better flocculation
• Non-pollutional(no aluminum, chlorine, heavy metal ions)

The dyehouses are divided in 2 categories:

First we apply the PAC (contact time 3-5 min with the waste water), after then DCA-58 Water Decoloring Agent (contact time 5-10 min), and after then anionic polyacrylamide.

It will give too much economy if we'll adjust the pH 7-8, otherwise the consumption of DCA-58 will be ~20% higher.