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Treatment of acid wastewater by Chitosan

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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Treatment of acid wastewater by Chitosan
SOLUTION FOR WASTEWATER PROBLEM RELATED TO …
SOLUTION FOR WASTEWATER PROBLEM RELATED TO …

cleaners etc. This effluent is supposed to be most hazardous ,containing, heavy metallic ions such as ,nickel,, chromium, zinc, lead, silver, cadmium, mercury etc. as well as cyanides, hydrogen sulphides, ammonia, chloramines which are toxic but valuable. Electroplating ,wastewater, is variable in character and alkaline in nature.

Pollution Prevention in the Plating Process
Pollution Prevention in the Plating Process

If a plater uses traditional chemical precipitation to treat the ,nickel,-laden ,wastewater, prior to discharge, the resulting sludge automatically is classified as a F006 hazardous waste. ,Iron, and chromium contamination is common ,in acidic nickel, baths.

Sequential recovery of copper and nickel from wastewater ...
Sequential recovery of copper and nickel from wastewater ...

The electroplating industry is one of the most important industries, which use, copper and ,nickel, in batch for ,plating,. However, the electroplating effluent produces ,wastewater containing, several heavy metal ions, which would toxify the water body and be harmful to human beings. Thus, heavy metal removal has become a serious problem to be solved.

(PDF) Nickel recovery from the rinse waters of plating ...
(PDF) Nickel recovery from the rinse waters of plating ...

rinse waters, charge transfer coefficient and related G. Orhan et al. / Hydrometallurgy 65 (2002) 1–8 3 In an earlier study, where electrolytic treatment of ,nickel,-,containing, rinse waters was investigated, For- nari and Abbruzzese (1999) obtained 99.5% ,nickel, recovery from a solution initially ,containing, 10 g/L Ni2 + , in their 180 mL laboratory-scale ,electrolysis, cell with a 3.05-kWh/kg Ni specific energy consump- tion.

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