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Acid wastewater containing chromium should be treated

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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Acid wastewater containing chromium should be treated
Recovery of Ammonium Salt from Nitrate-Containing Water by ...
Recovery of Ammonium Salt from Nitrate-Containing Water by ...

Nitrate, Reduction & ,Recovery, by NZVI and Membrane Contactor ume, the membrane length, and the feed velocity in the module, respectively. Eq. (1) was derived from mass balances of the mod - ule and the ammonia solution, assuming that the ,acid, reservoir is big enough to neutralize all the ammonia. 3. Results and Discussion 3.1.

FEASIBILITY OF ELECTROLYSIS IN NUTRIENT RECOVERY
FEASIBILITY OF ELECTROLYSIS IN NUTRIENT RECOVERY

-N), ionic species: ,nitrate, and nitrite, and nitrogen gas. One more nitroge-nous ,compound,, which can be found from ,wastewater, is urea. Urea is formed in the liver as a result of de-amination of amino acids. (PubChem, 2017). Nitrogen cycle is a process, where nitrogen is changed from one form to another and

Nitrogen and Phosphorus Harvesting from Human Urine Using ...
Nitrogen and Phosphorus Harvesting from Human Urine Using ...

Bioelectrochemical Ammoniation Coupled with Microbial Electrolysis for Nitrogen ,Recovery from Nitrate, in ,Wastewater,. Environmental Science & Technology 2020, 54 (5) , 3002-3011.

Phosphorus Reclamation by End-of-pipe Recovery as Calcium ...
Phosphorus Reclamation by End-of-pipe Recovery as Calcium ...

dissolved inorganic carbon (DIC) in the ,wastewater, and makes calcium available for calcium phosphate precipitation [8]. From reaction (3) it is also obvious that the ratio of DIC (bicarbonate) removed over ammonium nitrified to ,nitrate, is two. -+NH 4 + 2 O 2 → NO 3 + H 2 O + 2 H+ (1) 2 HCO 3-++ 2 H → 2 H 2 CO 3 → 2 H 2 O + 2 CO

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