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The ammonia nitrogen in acid dye dyeing wastewater exceeds the standard

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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The ammonia nitrogen in acid dye dyeing wastewater exceeds the standard
Treatment of Acid Red 73 wastewater by the O3/RSR-BCR ...
Treatment of Acid Red 73 wastewater by the O3/RSR-BCR ...

1/3/2021, · Rotor-stator reactor, (,RS,R), was employed in tandem with bubble column reactor, (,BC,R), to enhance Acid Red 73 (AR73) degradation by ozonation in a simulated dyeing wastewater in this work. It was found that AR73 and COD degradation efficiencies of more than 97% and 30% respectively were achieved in the O 3 /RSR-BCR process.

Reducing COD in final effluent | NTS chemicals for industry
Reducing COD in final effluent | NTS chemicals for industry

The COD reduction is made by, oxidation in an acid medium of a large part of, the oxidizable substances dissolved in the water to be treated. After the treatment, the reduction of COD can be measured by analysis of the acidified medium is more favorable to continued treatment with a much lower reagent consumption. Product to reduce the effluent COD

Treatment of terephthalic acid plant wastewater with an ...
Treatment of terephthalic acid plant wastewater with an ...

Anaerobic treatment of terephthalic ,acid, plant ,wastewater, with a lab-scale downflow tubular fixed film reactor achieved 75% of ,COD, removal with a HRT of 3.4 days at 33°C. The raw ,wastewater, from a petrochemical plant was settled and neutralized prior to reactor feeding. The responses to shock loads and to periods without feeding

Highly efficient treatment of terephthalic acid wastewater ...
Highly efficient treatment of terephthalic acid wastewater ...

remove ,chemical oxygen demand, (,COD,) from the ,wastewater,. Thus, a biodegradation process was used to further treat the effluent of the Fenton-like process. After 12 h of aerobic activated sludge process, 90% of ,COD, was removed, and the pH value of the effluent ranged from 8 to 9. In addition,

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