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# deep well drilling waste liquid harmless disposal technology ltd

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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deep well drilling waste liquid harmless disposal technology ltd

31/8/2010, · ,acid,. * When diluting, never add ,water, to ,acid,, always add ,acid, to ,water,. Doing so is sometimes highly exothermic, and should be done a bit at a time, wearing safety specs. If done the wrong way the result can even progress to explosion sometimes. Exploding boiling ,acid, …

sulfuric acid and hydrogen peroxide reaction

Sulfuric ,acid, (American / IUPAC spelling) or sulphuric ,acid, (traditional / British spelling), also known as oil of vitriol, is a mineral ,acid, composed of the elements sulfur, oxygen and hydrogen, with molecular formula H 2 SO 4.It is a colourless and viscous liquid that is miscible with ,water, at all concentrations.

Training course on disease diagnosis and prevention ...

Increases in temperature-fish require more but ,there, is less in the ,water, ... (eg ,chromic acid,) ... ,there, has been considerable recent development of fish farming in warm sea ,water,. From that ,reason,, aquaculturists must be carefull for diagnosis and control of diseases.

Wikipedia:Reference desk/Archives/Science/2010 May 10

For Question 2) ,Chromic acid, is not a compound which readily exists either isolated or in ,water,. Stable ",chromic acid," generally only works as a mixture of chromate (or dichromate) salts and a strong ,acid, such as hydrochloric or sulfuric; and the strength of these ,chromic acid, solutions probably depends on the strength of the co-,acid, present.

Biogas Production Essay - 5900 Words | Internet Public Library

Chromic acid is a more commonly used reagent for the oxidation of alcohols, it is a suspected carcinogen and generates hazardous waste. In green chemistry, innocuous chemical such as hypochlorous acid, HOCl will be used in oxidation, as to reduce the harmful waste.

The Color of Acid – Ryan Anderson

There, is one ,acid, that is brightly colored: ,chromic acid, (H2CrO4). Before reacting with something else, it’s usually a red or orange color. After reacting, “spent” ,chromic acid, is a dark green. Oh, this ,acid, is also carcinogenic (spent or fresh).

How to identify what is this? All we know it's some acid ...

If you have good ,reason, to suspect it's phosphoric ,acid,, ... The precipitate will not dissolve ,in acid,. ,There, is a molybdate color test for phosphate which you can google easily. level 1. Comment deleted by user 2 years ago. level 2. 8 points · 2 years ago · edited 2 years ago. EHS chemist here- the hazcat kit is a ridiculous ,waste, of time.

How to identify what is this? All we know it's some acid ...

If you have good ,reason, to suspect it's phosphoric ,acid,, ... The precipitate will not dissolve ,in acid,. ,There, is a molybdate color test for phosphate which you can google easily. level 1. Comment deleted by user 2 years ago. level 2. 8 points · 2 years ago · edited 2 years ago. EHS chemist here- the hazcat kit is a ridiculous ,waste, of time.

Newest 'aqueous-solution' Questions - Chemistry Stack Exchange

when dealing with ,waste water, and the total values of P, N, ... an ,acid, becomes more concentrated because more ions form pairs. However, does that affect the speed of reaction of the ,acid, as ,there, is a smaller ... $,chromic acid, solution, and I got its$\mathrm{pH}$around -1.7. Yet,$\mathrm{pH}$of$\pu{0.4 M}\$ solution was around -0.6 ...

(PDF) DuraChrome Hard Chromium Plating | Zafar Iqbal ...

Chromium Trioxide (,chromic acid,) is a reddish-brown, hygroscopic (,water, absorbing) chemical, easily soluble in ,water, to give a solution containing both H2CrO4 and H2Cr207 as mentioned earlier. Many manufacturers, now aware of the effect of even small amounts of catalyst ,acid, radicals, furnish a pure grade of ,chromic acid, especially suited for chromium plating.

Propionic Acid: Toxicity Uses & Safety - Science Class ...

The reason, it's used as preservative is because it has the ability to prevent the growth of ... then it should be neutralized with alkaline soap and ,water,. If ,there, is a large ... ,Chromic Acid, ...

Batteries: Electricity though chemical reactions ...

Due to the liquid nature of wet cells, insulator sheets are used to separate the anode and the cathode. Types of wet cells include Daniell cells, Leclanche cells (originally used in dry cells), Bunsen cells, Weston cells, ,Chromic acid, cells, and Grove cells. The lead-,acid, cells in automobile batteries are wet cells.

The Color of Acid – Ryan Anderson

There, is one ,acid, that is brightly colored: ,chromic acid, (H2CrO4). Before reacting with something else, it’s usually a red or orange color. After reacting, “spent” ,chromic acid, is a dark green. Oh, this ,acid, is also carcinogenic (spent or fresh).

Propionic Acid: Toxicity Uses & Safety - Science Class ...

The reason, it's used as preservative is because it has the ability to prevent the growth of ... then it should be neutralized with alkaline soap and ,water,. If ,there, is a large ... ,Chromic Acid, ...

(PDF) DuraChrome Hard Chromium Plating | Zafar Iqbal ...

Chromium Trioxide (,chromic acid,) is a reddish-brown, hygroscopic (,water, absorbing) chemical, easily soluble in ,water, to give a solution containing both H2CrO4 and H2Cr207 as mentioned earlier. Many manufacturers, now aware of the effect of even small amounts of catalyst ,acid, radicals, furnish a pure grade of ,chromic acid, especially suited for chromium plating.

Adsorption of chromium on activated carbon

Chromic acid, is a fairly strong ,acid, in its primary dissociation that does not exist except in solu tion. It shows a marked tendency in very concentrated solutions to form polynuclear species (polyacids) through the elimination of ,water,.

More Experiments in the Penny Lab

O– is a good nucleophile”, or ,why, HCl reacts with NaOH, we respond, “because it is an ,acid,–base reaction”. ,Why, do we do this? For one ,reason, the actual explanations of ,why, specific chemical systems behave as they do are often very complex and require lengthy arguments involving ki-netic and thermodynamic concepts. Another ,reason, is that

How to test a drink for methanol - Quora

Any significant amount of methyl alcohol present will release the unpleasant odour of formic acid, easily distinguishable from the odour of ethanol and its fruity ester or its oxidation to acetic acid. *Chromic acid is considered to be the most destructive of acids and is used to clean heavily soiled glassware when other treatments fail!

Chromium Emissions From Chromium Electroplating and ...

Another advantage of ,chromic acid, anodic coatings is their very high resistance to salt spray corrosion as compared to sulfuric ,acid, coatings of the same thickness.34 ,There, are four primary differences between the equipment used for ,chromic acid, anodizing and that used for chromium electroplating: (l) rectifiers must be fitted with a rheostat or other control mechanism to permit voltage ...

Adsorption of chromium on activated carbon

Chromic acid, is a fairly strong ,acid, in its primary dissociation that does not exist except in solu tion. It shows a marked tendency in very concentrated solutions to form polynuclear species (polyacids) through the elimination of ,water,.