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How to reuse acidic wastewater

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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How to reuse acidic wastewater
HJ 2056-2018 PDF. - Chinese Standard
HJ 2056-2018 PDF. - Chinese Standard

10.2.3 The ,wastewater, treatment project shall be equipped with corresponding labor protection articles for employees, and stored and transported in hazardous chemicals such as ,acid, and ,alkali,. The positions of preparation, dosing, etc. are equipped with corresponding labor safety and sanitation facilities, such as emergency cleaning water pipes and other devices.

Implementation of Effluent Treatment Plants for Wastewater ...
Implementation of Effluent Treatment Plants for Wastewater ...

For ,alkali, wastes (high pH) sulphuric ,acid, or hydrochloric ,acid, may be added. Acids can cause corrosion of equipment and care must be taken in choosing which ,acid, to use. Hydrocholoric ,acid, is probably better from an environmental view point but can corrode stainless steel therefore plastic or appropriately coated pumps and pipes must be used.

IS 3025-38 (1989): Methods of sampling and test (physical ...
IS 3025-38 (1989): Methods of sampling and test (physical ...

Collect the sample in 300 ml bottle, add 0’7 ml of concentrated sulphuric ,acid,, 1 ml of potas- sium permanganate solution and 1 ml of potas- sium fluoride solution. Stopper the bottle and mix by inverting. The sulphuric ,acid, addition should’not be in excess.

Implementation of Effluent Treatment Plants for Wastewater ...
Implementation of Effluent Treatment Plants for Wastewater ...

For ,alkali, wastes (high pH) sulphuric ,acid, or hydrochloric ,acid, may be added. Acids can cause corrosion of equipment and care must be taken in choosing which ,acid, to use. Hydrocholoric ,acid, is probably better from an environmental view point but can corrode stainless steel therefore plastic or appropriately coated pumps and pipes must be used.

IS 3025-38 (1989): Methods of sampling and test (physical ...
IS 3025-38 (1989): Methods of sampling and test (physical ...

Collect the sample in 300 ml bottle, add 0’7 ml of concentrated sulphuric ,acid,, 1 ml of potas- sium permanganate solution and 1 ml of potas- sium fluoride solution. Stopper the bottle and mix by inverting. The sulphuric ,acid, addition should’not be in excess.

Physical-chemical Wastewater Treatment Plant Design
Physical-chemical Wastewater Treatment Plant Design

A limit of 1 mg/1 of phosphorus is the general requirement for wastewater dis- charged to these waters. The usual requirement for secondary treatment was not defined in terms of BOD, but a limit of 112 mg/1 of COD has been prescribed by the New York Department of Environmental Conservation, along with a limit of 35 mg/1 of suspended solids and 0.23 mg/1 of phenol.

HJ 2048-2015 PDF. - chinesestandard.net
HJ 2048-2015 PDF. - chinesestandard.net

6.3.1.1 high temperature ,wastewater, should be pre-cooling pretreatment, the temperature dropped to below 30 ℃, before entering the integrated processing system. 6.3.1.2 ,acid, and ,alkali wastewater, should be ,acid, and ,alkali, pretreatment pretreatment, pH adjusted to 6 ~ 9 before they can enter the integrated processing system.

HJ 2056-2018 PDF. - Chinese Standard
HJ 2056-2018 PDF. - Chinese Standard

10.2.3 The ,wastewater, treatment project shall be equipped with corresponding labor protection articles for employees, and stored and transported in hazardous chemicals such as ,acid, and ,alkali,. The positions of preparation, dosing, etc. are equipped with corresponding labor safety and sanitation facilities, such as emergency cleaning water pipes and other devices.

Rehabilitation and upgrading wastewater treatment plant ...
Rehabilitation and upgrading wastewater treatment plant ...

This study aimed to achieve four objectives: (i) to rehabilitate the old and heavily destroyed Gravel Bed Hydroponic Wetland (GBHW) for treatment of municipal ,wastewater,; (ii) to upgrade the constructed wetland system to cope with the increased amount of received ,wastewater, as a result of population increase on one hand and to improve the efficiency of treatment on the other hand; (iii) to add a …

Open simultaneous saccharification and fermentation of l ...
Open simultaneous saccharification and fermentation of l ...

The biosynthesis of lignocellulosic L-lactic ,acid, has been intensively studied because of its substrate advantages including renewable nature, wide-distribution, abundance, and low cost. 1 An ,alkali, or ,acid, pretreatment is generally required to disrupt the stable structure of lignocellulose, which further enhances the efficiency of enzymatic hydrolysis. 2 Although various lignocellulosic substrates have been used for L-lactic ,acid, …

QUALITY ASSURANCE MANUAL - IN.gov
QUALITY ASSURANCE MANUAL - IN.gov

Alkali,-iodide-azide reagent: Dissolve 500 g NaOH(Sodium Hydroxide) and 135 g NaI(Sodium Iodide) in reagent water. Dilute to 1 L. Add 10 g NaN3(Sodium Azide) dissolve in 40 mL reagent water. This reagent should not give a color with starch solution when diluted and acidified. Concentrated Sulfuric ,acid,…

Assessment of Effluent Quality of Tertiary Wastewater ...
Assessment of Effluent Quality of Tertiary Wastewater ...

Sodicity hazard ,calculation,: Concentrations of Na +, Ca +2, Mg +2, CO 3-2 and HCO 3 ¯ were transferred to millequivalent concentrations and employed to evaluate sodicity hazard by calculating SAR, SAR adj, SSP, ESP and RSC according to Eaton (1950), Richards …

Assessment of Effluent Quality of Tertiary Wastewater ...
Assessment of Effluent Quality of Tertiary Wastewater ...

Sodicity hazard ,calculation,: Concentrations of Na +, Ca +2, Mg +2, CO 3-2 and HCO 3 ¯ were transferred to millequivalent concentrations and employed to evaluate sodicity hazard by calculating SAR, SAR adj, SSP, ESP and RSC according to Eaton (1950), Richards (1954) and Suarez (1981) using the following equations:

QUALITY ASSURANCE MANUAL - IN.gov
QUALITY ASSURANCE MANUAL - IN.gov

Alkali,-iodide-azide reagent: Dissolve 500 g NaOH(Sodium Hydroxide) and 135 g NaI(Sodium Iodide) in reagent water. Dilute to 1 L. Add 10 g NaN3(Sodium Azide) dissolve in 40 mL reagent water. This reagent should not give a color with starch solution when diluted and acidified. Concentrated Sulfuric ,acid,…

HJ 2048-2015 PDF. - chinesestandard.net
HJ 2048-2015 PDF. - chinesestandard.net

6.3.1.1 high temperature ,wastewater, should be pre-cooling pretreatment, the temperature dropped to below 30 ℃, before entering the integrated processing system. 6.3.1.2 ,acid, and ,alkali wastewater, should be ,acid, and ,alkali, pretreatment pretreatment, pH adjusted to 6 ~ 9 before they can enter the integrated processing system.

Hydrochloric Acid Storage Tanks & HCl Specifications
Hydrochloric Acid Storage Tanks & HCl Specifications

In a general ,calculation, for strong acids, the pH of the solution is equal to the negative log of the solution’s molarity: pH = -log[molarity], and as such, HCl solutions of 1M (M, for molarity) or greater will have negative pH values, indicative of the health and safety …

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