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Which treatment method is better for 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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Which treatment method is better for acid wastewater
Winery Wastewater and Animal Manure: The New Alternative ...
Winery Wastewater and Animal Manure: The New Alternative ...

The resulting ,wastewater, is typically ,acidic,, has a high organic load, and high polyphenol, macro/micro nutrient, and heavy metal concentrations. It is possible that the levels of these compounds may vary, depending upon local laws, though for the purpose of this article, we’ll assume there are no differences in ,wastewater, content between wine regions (this article focus on the wine industry ...

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

Fermentation of swine wastewater-derived duckweed for ...
Fermentation of swine wastewater-derived duckweed for ...

Abstract Duckweed harvested from a ,swine wastewater, treatment system was evaluated for its potential as a fermentation feedstock for the production of biohydrogen. The effects of pretreatment and fermentation conditions on biohydrogen production were investigated in laboratory-scale batch experiments. The results showed that mild ,acidic, thermal pretreatment (1% H2SO4 and 85 °C for 1 h) …

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, > 20 g/L) [1]. Excess discharge of nitrogen has not only led to

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