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Treatment technology of fracturing fluid backflow

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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Treatment technology of fracturing fluid backflow
Impact of imidacloprid on Daphnia magna under different ...
Impact of imidacloprid on Daphnia magna under different ...

Article Impact of ,imidacloprid, on Daphnia magna under different food quality regimes. Aquatic ecosystems are characterized by fluctuating conditions that have direct effects on aquatic communities, but also indirect influences such as changing the to...

Imidacloprid - an overview | ScienceDirect Topics
Imidacloprid - an overview | ScienceDirect Topics

This condition would enhance the concentration of • OH radicals and their effective utilization, which subsequently increases the degradation of imidacloprid. Under acidic conditions the state of the, imidacloprid molecule changes from ionic to molecular, thereby causing it to locate at, the, cavity water interface, where the, concentration, of the • OH radicals is high and hence the degradation rate increases.

CN102190411B - Treatment method for acidic organic ...
CN102190411B - Treatment method for acidic organic ...

The invention discloses a treatment method for ,acidic, organic chemical ,wastewater, with high COD (chemical oxygen demand) and high sulfate radical concentration, which mainly comprises the following steps: Ca(OH)2 pretreatment, anaerobic treatment, two-stage aerobic treatment, etc. After Ca(OH)2 pretreatment of the ,acidic, organic chemical industry ,wastewater, to remove most of sulfate radicals ...

(PDF) Sorption and Degradation of Imidacloprid in Soil and ...
(PDF) Sorption and Degradation of Imidacloprid in Soil and ...

This study demonstrated that ,imidacloprid, can be highly toxic to soil invertebrates, even in soil concentrations lower than those expected from recommended dose, causing an impact on the edaphic ...

Bacterial biodegradation of neonicotinoid pesticides in ...
Bacterial biodegradation of neonicotinoid pesticides in ...

However, alkaline conditions were found to be slightly more favourable for imidacloprid degradation as compared to acidic conditions. The temperature studies indicated that the maximum acetamiprid degradation was achieved at a temperature of 35°C, in keeping with mesophilic conditions suited to …

Toxics | Free Full-Text | Insights into the Toxicity and ...
Toxics | Free Full-Text | Insights into the Toxicity and ...

Imidacloprid, is quite stable in, acidic, and neutral, water;, however, under alkaline conditions, the hydrolysis of, imidacloprid, under different temperatures is enhanced by hydrolyzation, which follows quasi-first-order kinetics, but is relatively slow when the activation energy of the hydrolyzation is 42.72 KJ·mol −1, almost six times that of photodegradation .

Treatment of Two Recalcitrant Neonicotinoid Insecticided ...
Treatment of Two Recalcitrant Neonicotinoid Insecticided ...

imidacloprid, (IMD) removal using from ,wastewater,, a terbium ped Ti/PbO 2 (denoted as Ti/PbO 2 –Tb) dimensionally stable Ti/PbO 2 – Tb anode with one-step electrodeposition path via electrocatalytic degradation.70.05% of chemical oxygen demand and 76.07% of IMD are removed after 2.5h of degradation under current

(PDF) Comparative toxicity of imidacloprid and its ...
(PDF) Comparative toxicity of imidacloprid and its ...

The its agonistic action on insect nicotinic acetylcholine receptors primary IMI breakdown products in soil are: ,imidacloprid, urea, and its selective toxicity to insects over vertebrates [1]. 6-hydroxynicotinic acid and 6-chloronicotinic acid (6CNA) [4].

Degradation of imidacloprid in wastewater by dielectric ...
Degradation of imidacloprid in wastewater by dielectric ...

The degradation behavior of ,imidacloprid, in ,wastewater, was investigated with dielectric barrier discharge (DBD) system and the effect of several factors that could influence degradation process was explored in this study. The study showed that ,imidacloprid, could be effectively removed by DBD system under certain conditions.

(PDF) Degradation of neonicotinoid insecticides by ...
(PDF) Degradation of neonicotinoid insecticides by ...

When exposing ,imidacloprid, to UV radiation, the photons are more efficiently absorbed by ,imidacloprid, and therefore faster degradation kinetics is observed for ,imidacloprid,.Likewise, also ozone experiments confirmed the higher chemical stability of thiacloprid both in ,acidic, and in neutral solutions.

(PDF) Removal of imidacloprid using activated carbon ...
(PDF) Removal of imidacloprid using activated carbon ...

As shown in Figure 5A, t he adsorbed amount of, imidacloprid, is, low in acidic, and basic media. The best adsorption process is obtained at pH 6.9 suggesting that the pH significantly

Degradation of imidacloprid containing wastewaters using ...
Degradation of imidacloprid containing wastewaters using ...

1/9/2014, · Imidacloprid is one such, pesticide generally used for seed treatment to control the, sucking and biting insects,. Imidacloprid has high toxicity, relatively high solubility (0.58 g L −1) and stability in water creating significant environmental concerns,,.

VT ETF Holdings: FKnol.com
VT ETF Holdings: FKnol.com

CBRE ,Group, (CBRE) CBRE ,Group,, Inc., incorporated on February 20, 2001, is a holding company that conducts all of its operations through its subsidiaries. The Company operates as a commercial real estate services and investment company. $81.82: $27.52 billion 286) Dollar Tree (DLTR)

Efficient removal of insecticide “imidacloprid” from water ...
Efficient removal of insecticide “imidacloprid” from water ...

27/3/2014, · Abstract. The oxidative degradation of ,imidacloprid, (ICP) has been carried out by electrochemical advanced oxidation processes (EAOPs), anodic oxidation, and electro-Fenton, in which hydroxyl radicals are generated electrocatalytically. Carbon-felt cathode and platinum or boron-doped diamond (BDD) anodes were used in electrolysis cell.

Degradation of imidacloprid in wastewater by dielectric ...
Degradation of imidacloprid in wastewater by dielectric ...

The degradation behavior of ,imidacloprid, in ,wastewater, was investigated with dielectric barrier discharge (DBD) system and the effect of several factors that could influence degradation process was explored in this study. The study showed that ,imidacloprid, could be effectively removed by DBD system under certain conditions.

Mass Balance Assessment for Six Neonicotinoid Insecticides ...
Mass Balance Assessment for Six Neonicotinoid Insecticides ...

A few studies have detected imidacloprid in wastewater, showing that treated effluent can inadvertently contribute to neonicotinoid discharge into receiving water bodies. Indeed, a nationwide assessment of United States streams showed a positive correlation between neonicotinoid occurrence and urban land usage but not with agricultural use.

Treatment of fish processing industry wastewater using ...
Treatment of fish processing industry wastewater using ...

The degradation of ,Imidacloprid, (insecticide) in ,wastewater, has been successfully carried out in HC with H 2 O 2 (Raut-Jadhav et al. 2013). With the use of H 2 O 2 with HC, phenol oxidation is carried out effectively under controlled conditions ( Yiyu et al. 2012 ).

Neonicotinoid insecticide hydrolysis and photolysis: Rates ...
Neonicotinoid insecticide hydrolysis and photolysis: Rates ...

Baseline ,imidacloprid, results are similar to previously reported hydrolysis studies, in which ,imidacloprid, was only observed to react at pH values >9 (Zheng and Liu 1999; Liu et al. 2006). Thiamethoxam hydrolysis kinetics at high pH were similar to previously reported work (Liqing et al. 2006 ; Karmakar et al. 2009 ; Klarich et al. 2017 ).

Treatment of fish processing industry wastewater using ...
Treatment of fish processing industry wastewater using ...

The degradation of ,Imidacloprid, (insecticide) in ,wastewater, has been successfully carried out in HC with H 2 O 2 (Raut-Jadhav et al. 2013). With the use of H 2 O 2 with HC, phenol oxidation is carried out effectively under controlled conditions ( Yiyu et al. 2012 ).

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