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Pretreatment of acid 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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Pretreatment of acid wastewater
CN103159342B - Hydrofluoric acid wastewater treatment ...
CN103159342B - Hydrofluoric acid wastewater treatment ...

Abstract. The invention relates to a hydrofluoric ,acid wastewater, treatment method for treating ,wastewater, after etching glass substrates. According to the invention, ,acid,, ,calcium, salt and ,calcium, hydroxide are added to the ,wastewater, in order to deposit fluoride ions and form ,calcium, …

water treatment – precipitation inhibitors - Degremont®
water treatment – precipitation inhibitors - Degremont®

The retarding action is straight forward on ,calcium carbonate, but a little less so on magnesia and ,calcium, sulphate. As a rule, approximately 2 g · m –3 of polyphosphate will be required to stabilise water having a TH and a M-alk. of approximately 20°F. This amount will increase with the TH, M-alk., turbidity and utilisation temperature.

Amino Trimethylene Phosphonic Acid Uses in Water Treatment ...
Amino Trimethylene Phosphonic Acid Uses in Water Treatment ...

The purpose of ,adding acid, is to adjust the equilibrium concentration of ,carbonate, compounds by adjusting the pH value of water. And then adjust the equilibrium concentration of ,calcium carbonate, to prevent the formation of ,calcium carbonate,. 3. The common acids are hydrochloric ,acid, and sulfuric ,acid,.

Recovery of Calcium Carbonate from Wastewater Treatment ...
Recovery of Calcium Carbonate from Wastewater Treatment ...

The use of otation technique for the recovery of ,calcium carbonate, (CaCO 3) from ,wastewater, treatment sludge was investigated in this study. The parameters that were investigated included dosage ...

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