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Treatment of acid solution of arsenic containing wastewater

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 solution of arsenic containing wastewater
A crosslinking-induced precipitation process for the ...
A crosslinking-induced precipitation process for the ...

15/10/2019, · The precipitation occurs in the form of a PVA/boric acid/didiol complex that is produced at pH 8–10 by a reaction with boric acid, or with borax added in the presence of inorganic salts , , . It is a simple and cost-effective method, but the sludge dewatering is a difficult process, primarily because of the hydrophilic nature of PVA.

Alkaline Wastewater - an overview | ScienceDirect Topics
Alkaline Wastewater - an overview | ScienceDirect Topics

Chemical pretreatment may involve pH adjustment or coagulation and flocculation. The acidity or alkalinity of wastewater affects both wastewater treatment and the environment., Low pH, indicates increasing acidity while a high pH indicates increasing alkalinity. The pH of wastewater needs to remain between 6 and 9 to protect organisms.

TREATMENT OF WASTEWATER CONTAINING DYE MIXTURE …
TREATMENT OF WASTEWATER CONTAINING DYE MIXTURE …

the removal of potentially toxic substances from the effluent, ,precipitation, is the most widely used for the removal of metals from industrial effluents. In this experiment, we used the lime, which was added to treated effluents, while maintaining the ,pH, value in the range 7.5-8, in order to meet the requirements [14].

Treatment of real benzene dye intermediates wastewater by ...
Treatment of real benzene dye intermediates wastewater by ...

On the contrary, ,under, the ,conditions, of higher ,pH,, the production of ˙OH is inhibited by ferric hydroxo complexes. Moreover, Fe 2+ or Fe 3+ tends to generate a variety of amorphous complex ,precipitation, even further forming Fe(OH) 4 − when the ,pH, value is higher, 39,40 which significantly decreases the oxidation capability of the system.

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