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Mine waste water is alkaline and mineral processing waste water becomes acidic when it enters tailings pond

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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Mine waste water is alkaline and mineral processing waste water becomes acidic when it enters tailings pond
Chemical Industry Wastewater Treatment Using Adsorption
Chemical Industry Wastewater Treatment Using Adsorption

wastewater9 was reduced to less than 0.5 mg/L by passing the ,wastewater, through a three-stage­ adsorbing tank, each stage packed with activated carbon. More than 80 per cent ,COD removal, was obtained from ,wastewater, containing benzene derivatives. carboxylic acids, pesticides. and phenols

COD removal from industrial wastewater using activated ...
COD removal from industrial wastewater using activated ...

COD removal, from industrial ,wastewater, using ... (CAC) with respect to uptake of the organic components responsible for the ,chemical oxygen demand, (,COD,) ... pretreated by washing the container with dilute hydrochloric ,acid, and later rinsed with distilled water.

Wastewater COD removal using sol-gel immobilized humic acid
Wastewater COD removal using sol-gel immobilized humic acid

Key words: ,Wastewater,, humic ,acid,, ,COD,, sol-gel. INTRODUCTION Pollution of water by organic and inorganic chemicals is of serious environmental concern. The organic content of ,wastewater, is traditionally measured using lumped parameters such as biological oxygen demand (BOD), ,chemical oxygen demand COD,), total suspended solids (TSS). These ...

Biological Treatment of Petrochemical Wastewater | IntechOpen
Biological Treatment of Petrochemical Wastewater | IntechOpen

9/4/2018, · Hybrid system combining UASB and aerobic stage treating oilfield wastewater showed good effects on COD removal by enabling acidification prior to the aerobic stage where organisms are actively reacting with organic chemicals. The COD removal rates were over 70–95%. Oil and ammonia removal was also recorded over 87% .

Reduction of Chemical Oxygen Demand (COD) from Waste Water ...
Reduction of Chemical Oxygen Demand (COD) from Waste Water ...

28/8/2018, · Wastewaters containing organics dramatically contaminate the environment. As an example, ,wastewater, from alcohol manufacturing plant has a ,chemical oxygen demand, (,COD,) as high as 35,000–40,000 mg/1.

Reduction of Chemical Oxygen Demand (COD) from Waste Water ...
Reduction of Chemical Oxygen Demand (COD) from Waste Water ...

28/8/2018, · Wastewaters containing organics dramatically contaminate the environment. As an example, ,wastewater, from alcohol manufacturing plant has a ,chemical oxygen demand, (,COD,) as high as 35,000–40,000 mg/1.

Current recovery from sewage wastewater using ...
Current recovery from sewage wastewater using ...

The COD removal rates were calculated from the initial and final CODs determined immediately after and before wastewater replacement. CODs in the 1.0–2.0 mg d −1 cm −3 range were determined for all bottles, and no significant differences were observed among the cultures incubated with the three types of anode ( Fig. 4B ).

Chemical Industry Wastewater Treatment Using Adsorption
Chemical Industry Wastewater Treatment Using Adsorption

wastewater9 was reduced to less than 0.5 mg/L by passing the ,wastewater, through a three-stage­ adsorbing tank, each stage packed with activated carbon. More than 80 per cent ,COD removal, was obtained from ,wastewater, containing benzene derivatives. carboxylic acids, pesticides. and phenols

Removal of hard COD from biological effluent of coking ...
Removal of hard COD from biological effluent of coking ...

In this study, a synchronized oxidation-adsorption (SOA) technology was proposed for the removal of hardly biodegradable COD (hard COD) from the biological effluent of coking wastewater, and its performance was verified in a full-scale coking industrial park wastewater treatment plant (Q …

Biological Treatment of Petrochemical Wastewater | IntechOpen
Biological Treatment of Petrochemical Wastewater | IntechOpen

9/4/2018, · Hybrid system combining UASB and aerobic stage treating oilfield wastewater showed good effects on COD removal by enabling acidification prior to the aerobic stage where organisms are actively reacting with organic chemicals. The COD removal rates were over 70–95%. Oil and ammonia removal was also recorded over 87% .

COD removal from petrochemical wastewater by UV/hydrogen ...
COD removal from petrochemical wastewater by UV/hydrogen ...

In the UV/PS system, pH did not significantly influence COD removal from petrochemical wastewater. COD removal efficiencies were 47%, 51% and 49% for pH 3.0, 7.0 and 10.0, respectively. There was no significant difference in removal efficiencies with various pH values. In contrast to UV/H 2 O 2, PS/UV has an acceptable performance in alkali conditions.

Current recovery from sewage wastewater using ...
Current recovery from sewage wastewater using ...

The COD removal rates were calculated from the initial and final CODs determined immediately after and before wastewater replacement. CODs in the 1.0–2.0 mg d −1 cm −3 range were determined for all bottles, and no significant differences were observed among the cultures incubated with the three types of anode ( Fig. 4B ).

COD and BOD Reduction of Domestic Wastewater using ...
COD and BOD Reduction of Domestic Wastewater using ...

The results showed that the activated sludge, sand filter and the activated carbon were effective for removal of COD from the wastewater. The reduction in COD was from 130.33 mg L-1 (raw water) to 10.2 mg L-1 (treated water) with a mean removal efficiency of 92.17%. The study results agree with those of Healy et al. (2006) who studied the performance of a stratified sand filter in removal of chemical …

Reducing COD in final effluent | NTS chemicals for industry
Reducing COD in final effluent | NTS chemicals for industry

The NTS CLEAR 2550 can efficiently reduce the COD of waste water. NTS CLEAR 2550 is used in the physicochemical standard stations. The NTS CLEAR 2550 is a liquid, easy to use and economical. The NTS CLEAR 2550 is recommended to remove color wastewater trouble and suspended solids.

COD removal from industrial wastewater using activated ...
COD removal from industrial wastewater using activated ...

COD removal, from industrial ,wastewater, using ... (CAC) with respect to uptake of the organic components responsible for the ,chemical oxygen demand, (,COD,) ... pretreated by washing the container with dilute hydrochloric ,acid, and later rinsed with distilled water.

Wastewater COD removal using sol-gel immobilized humic acid
Wastewater COD removal using sol-gel immobilized humic acid

Key words: ,Wastewater,, humic ,acid,, ,COD,, sol-gel. INTRODUCTION Pollution of water by organic and inorganic chemicals is of serious environmental concern. The organic content of ,wastewater, is traditionally measured using lumped parameters such as biological oxygen demand (BOD), ,chemical oxygen demand COD,), total suspended solids (TSS). These ...

COD removal from petrochemical wastewater by UV/hydrogen ...
COD removal from petrochemical wastewater by UV/hydrogen ...

In the UV/PS system, pH did not significantly influence COD removal from petrochemical wastewater. COD removal efficiencies were 47%, 51% and 49% for pH 3.0, 7.0 and 10.0, respectively. There was no significant difference in removal efficiencies with various pH values. In contrast to UV/H 2 O 2, PS/UV has an acceptable performance in alkali conditions.

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