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Acid wastewater is not a toxic substance

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 is not a toxic substance
Journal of Water Process Engineering
Journal of Water Process Engineering

mud), five cycles of heavy metals ,removal, could be done. Besides, it is an important research direction to treat sewage by the coagulant pre-pared from modified red mud, such as aluminum ,ferric, silicate floccu-lant and polyaluminium ,ferric, chloride flocculant [18–22]. Fly ash is a solid waste obtained by filtering, deposition, and col-

Investigation of Ammonia and Trace Elements Leaching from ...
Investigation of Ammonia and Trace Elements Leaching from ...

1 INVESTIGATION OF AMMONIA AND ,TRACE ELEMENTS LEACHING FROM CEMENT AND CONCRETE PRODUCTS AMENDED WITH CEMENT, ... CKD has beneficial uses as a soil amendment, as media for ,wastewater, treatment, and as landfill cover soil or ... It was assumed that all of the ,ammonium, in the fly ash is in the form of ,ammonium sulfate, and bisulfate ...

Waste Water Treatment
Waste Water Treatment

These oxidizing agents make waterreusable by hampering the biological growth process of bacteria which happensto be the main cause of decomposition of water. NeutralizationWhen it comes to industrial ,wastewater treatment,, a chemical process known asNeutralization is quite common.This process involves adding ,acid, or base to the water to adjust its pH value andbring it back to neutral level ...

William Abraham Tarpeh's Profile | Stanford Profiles
William Abraham Tarpeh's Profile | Stanford Profiles

Trace, organics (0.1 μg L-1) and ,elements, (30 μg L-1) were not detected at appreciable levels in the ,ammonium sulfate, fertilizer product. This novel approach holds promise for selective recovery of nitrogen from concentrated liquid waste streams such as source-separated urine.

Removal of selenium from water by complexation with ...
Removal of selenium from water by complexation with ...

The prior art has suggested the removal of Selenium in two common methods. One, Ferric coprecipitation, involves the addition of a ferric salt, typically ferric chloride or sulfate to the waste water. Adjustment of pH precipitates the iron as ferric hydroxide. Selenite is …

Waste Water Treatment
Waste Water Treatment

These oxidizing agents make waterreusable by hampering the biological growth process of bacteria which happensto be the main cause of decomposition of water. NeutralizationWhen it comes to industrial ,wastewater treatment,, a chemical process known asNeutralization is quite common.This process involves adding ,acid, or base to the water to adjust its pH value andbring it back to neutral level ...

Phosphorus removal and recovery from wastewater via hybrid ...
Phosphorus removal and recovery from wastewater via hybrid ...

21/1/2021, · Phosphorus ,removal, and recovery from ,wastewater, via hybrid ion exchange nanotechnology: a study on sustainable regeneration chemistries

William Abraham Tarpeh's Profile | Stanford Profiles
William Abraham Tarpeh's Profile | Stanford Profiles

Trace, organics (0.1 μg L-1) and ,elements, (30 μg L-1) were not detected at appreciable levels in the ,ammonium sulfate, fertilizer product. This novel approach holds promise for selective recovery of nitrogen from concentrated liquid waste streams such as source-separated urine.

Sequestration and Transformation in Chemically Enhanced ...
Sequestration and Transformation in Chemically Enhanced ...

For coagulation selection and optimization, jar test are often performed and in laboratory DOC ,removal, studies, ,ferric sulfate, was shown to outperform PAC (Mourad 2008; Henneberry 2012). Laboratory studies subjecting flocs to varying pH and redox conditions to simulate field conditions indicated both types of flocs to be equally resilient and no DOC was observed to be released ( Henneberry 2012 ).

OILS FOUND IN WASTEWATER - University of Washington
OILS FOUND IN WASTEWATER - University of Washington

They are sulfurized and chlorinated by reacting the oil with hydrochloric ,acid, and sulfonic ,acid,. As the heat from cutting hits the cutting fluid, ,ferric sulfate, or chloride is generated at the point where the cutting metal hits the metal being cut, which show up in the ,wastewater,. They are mixed with water and are transparent. 7. LUBRICATING OILS

Oil and Gas Production Wastewater: Soil Contamination and ...
Oil and Gas Production Wastewater: Soil Contamination and ...

During oil and natural ,gas production,, so-called “produced water” comprises the largest byproduct stream. In addition, many oil and gas operations are augmented via injection of hydraulic fracturing (HF) fluids into the formation. Both produced water and HF fluids may contain hundreds of individual chemicals, some known to be detrimental to public health and the environment.

Experimental Research on the Preparation Process and ...
Experimental Research on the Preparation Process and ...

These processes with FeSO4 as an absorbent,NaClO3 as an oxidant and SO2 in flue gases as raw material to synthesize flocculent agent PFS in the packed absorption column were investigated.The oxidation experiment showed that the production of consistent with national standard polymeric ,ferric sulfate,(PFS) under the precondition of high SO2 ,removal, efficiency is feasible.To do the research of ...

Journal of Water Process Engineering
Journal of Water Process Engineering

mud), five cycles of heavy metals ,removal, could be done. Besides, it is an important research direction to treat sewage by the coagulant pre-pared from modified red mud, such as aluminum ,ferric, silicate floccu-lant and polyaluminium ,ferric, chloride flocculant [18–22]. Fly ash is a solid waste obtained by filtering, deposition, and col-

Recovery/removal of metallic elements from waste water ...
Recovery/removal of metallic elements from waste water ...

Because acidic ,wastewater,, including ,acid, mine drainage, discolors streams, damages ecological systems, and harms wildlife, federal and state limits for ,waste-water, effluent require that the discharge pH be between 6 and 9, and that the concentration of common metallic ,elements, such as iron and manganese be less than 2 milligrams per liter (mg/L) [cf. U.S. Environmental Protection Agency, 1994].

Membrane processes - Arabi - 2020 - Water Environment ...
Membrane processes - Arabi - 2020 - Water Environment ...

Domestic ,wastewater, was treated for nitrogen ,removal, using an MBfR with high denitrification efficiency for an economic nitrogen ,removal, process (Lee, Alrashed, Alrashed, & Lee, 2018). Another study used an MBfR to treat ,wastewater, in a neutral energy system through anaerobic ,ammonium, oxidation (Xie, Liu, Liu, Cai, Hu, & Zhiguo, 2018 ).

Sequestration and Transformation in Chemically Enhanced ...
Sequestration and Transformation in Chemically Enhanced ...

For coagulation selection and optimization, jar test are often performed and in laboratory DOC ,removal, studies, ,ferric sulfate, was shown to outperform PAC (Mourad 2008; Henneberry 2012). Laboratory studies subjecting flocs to varying pH and redox conditions to simulate field conditions indicated both types of flocs to be equally resilient and no DOC was observed to be released ( Henneberry 2012 ).

Removing dissolved phosphorus from drainage ditch water ...
Removing dissolved phosphorus from drainage ditch water ...

Alum (aluminum ,sulfate,) Al ,Ferric sulfate, Fe ,Ferric, chloride Fe Byproducts Calcium silicate slag Ca Cement kiln dust Ca Wood ash Ca Paper mill lime Ca Fly-ash (coal fired) Ca, Fe, Al: varies Drinking water treatment residuals Al > Fe, Ca Paper mill sludge Al, Ca ,Acid, mine drainage residuals Fe > Al, Ca: varies Bauxite mining waste Al, Fe > Ca

Removal of silver and antimony radionuclides from low ...
Removal of silver and antimony radionuclides from low ...

Suitable reagent(s) and the optimum doses were to be investigated for the treatment and conditioning of the ,wastewater,. Different scavenging agents like ,ferric, chloride, ferrous ,sulfate,, stannous chloride, in situ precipitated manganese hydroxide and lanthanum nitrate were studied for the ,removal, …

ChemEngineering | Free Full-Text | Removal of the ...
ChemEngineering | Free Full-Text | Removal of the ...

The combined chemical and biological treatment of this ,wastewater, in the bioreactors with hematite iron ore removed up to 70% of TOC. About 20% of TOC was removed quickly by adsorption on iron ore particles, but adsorption/precipitation of others up to 50% of TOC was due to ferrous/,ferric, ions and hydroxides produced during microbial reduction and dissolution of iron ore.

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