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Study on the acidity of wax casting 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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Study on the acidity of wax casting wastewater
Ph as a real-time control parameter in swine wastewater ...
Ph as a real-time control parameter in swine wastewater ...

Description. The main objective of this research was to evaluate the effectiveness of pH as areal-time ,control parameter in swine wastewater treatment,. This real-time control processwas implemented into a Two Stage Sequencing Batch Reactor (TSSBRs) system. Thefirst SBR is …

Recovery of ammonia and phosphate minerals from swine ...
Recovery of ammonia and phosphate minerals from swine ...

the pH of ,swine wastewater, to 9.2 without alkali chemicals and obtained NH4 þ recovery efficiencies of 96e98% while reducing costs of treatment by 70%. The annualized of NH4 þ recovery from a 4000-head ,swine, farm with anaerobic digester (12,547 kg N/year) using gas-permeable membranes with low-rate aeration and nitrification

Polyacrylamide for chemical fiber
Polyacrylamide for chemical fiber

Chemical fiber ,wastewater, contains high organic matter content, various toxic substances, high B/C and unstable, between 1000-10000mg/1, ,wastewater, treatment has poor biodegradability, ,wastewater, is ,acidic, or destructive, and contains aldehydes and cyanide Toxic substances such as benzene, benzene, etc., are likely to have toxic effects on microorganisms.

Ammonia Nitrogen Removal and Recovery from Swine ...
Ammonia Nitrogen Removal and Recovery from Swine ...

mous amounts of ,swine wastewater,. ,Swine wastewater, is composed of feces, urines and washing water discharged from pig farm con-tains high nitrogen content (total nitrogen; TN, 1.8-4.3 g/L) and organic matter content (total chemical oxygen demand; TCOD, > …

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