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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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vibratory separator screens
Disinfection of Water & WW - Norweco - Norwalk Wastewater ...
Disinfection of Water & WW - Norweco - Norwalk Wastewater ...

treatment processes do little or nothing to stabilize nitrogen compounds. If the wastewater is retained in a collection system, or in a septic tank for several hours, a high percentage of the organic nitrogen undergoes the “ammonification” process whereby it is converted to ammonia-nitrogen. Chlorine readily combines with ammonia 2 3)

Effect of Ammonia Nitrogen and Dissolved Organic Matter ...
Effect of Ammonia Nitrogen and Dissolved Organic Matter ...

For the first time, ,ammonia nitrogen, (NH 3 N) was found to significantly influence genotoxicity during ,wastewater, chlorination. After chlorination, the genotoxicity decreased in ,wastewater, with a low NH 3 N concentration (<10∼20 mg/L), but it increased notably in ,wastewater, with a …

Chloramines as a disinfectant - Water Treatment and ...
Chloramines as a disinfectant - Water Treatment and ...

The amounts of ,chlorine, and ,ammonia, in the water also influence the origination of ,chloramines,. The ,chlorine,/ ,ammonia, rate is ideally 6:1. During chloramine production the rate is usually 3-5:1. When ,ammonia, concentrations are higher, more di- and trichloramines are formed. Organic ,chloramines, can also be formed during these reactions.

Lime Use in Wastewater Treatment: Design and Cost Data
Lime Use in Wastewater Treatment: Design and Cost Data

Supernatant Quality for CCCSD ,Wastewater, 41 6- 4 Phosphorus Removal for Low pH Operation lime and Iron ,Treatment, of CCCSD ,Wastewater, 44 6- 5 Effect of Lime ,Treatment, on Salt Lake City ,Wastewater, 45 6- 6 Calcium Loss to Supernatant and Phosphorous Precipitation 46 6- 7 Location of Lime Slakers at the CCCSD Water Reclamation Plant 49 6- 8 Lime Dosage Control Diagrams 50 6- 9 Lime Dosage Control ...

Page 3: Guidelines for Canadian Drinking Water Quality ...
Page 3: Guidelines for Canadian Drinking Water Quality ...

Free ,chlorine,: the amount of ,chlorine, present in water as dissolved gas (Cl 2), hypochlorous ,acid, (HOCl), and/or hypochlorite ion (OCl-) that is not combined with ,ammonia, or other compounds in water. Combined ,chlorine,: the sum of the species resulting from the reaction of free ,chlorine, with ,ammonia, (NH 3 ), including monochloramine (NH 2 Cl), dichloramine (NHCl 2 ), and trichloramine (,nitrogen, ...

Advanced Disinfection Study Guide
Advanced Disinfection Study Guide

Adding ,chlorine, to treated ,wastewater,, which has ,ammonia, (NH3), will cause a reaction, where hypochlorous ,acid, (HOCl) reacts with ,ammonia, to form chloramines. Chloramines are not effective disinfecting compounds. The reactions and type of chloramines formed are: NH3 + HOCl --> NH2Cl + H2O = Monochloramine NH2Cl + HOCl --> NHCl2 + H2O =Dichloramine

Cyanide Wastewater Treatment Chlorine Oxidation ...
Cyanide Wastewater Treatment Chlorine Oxidation ...

30/3/2021, · In the presence of free ,chlorine,, ,ammonia, is rapidly converted to ,nitrogen, gas. 3Cl2+6NaOH+(NH4)2CO3+Na2CO3^2NaHCO3+N2|+6NaCl+6H2O. As with all breakpoint chlorination applications, other products such as N2O and NCl3 are also formed. Another way of hydrolyzing the cyanate is to employ ,acid, conditions (pH<2.5). 2NaCNO+H2SO4+4H2O^(NH4)2SO4+2NaHCO3

BOQU - Water Quality Analyzer Water Quality Sensor ...
BOQU - Water Quality Analyzer Water Quality Sensor ...

Through excessive use of resources, China's economy has developed rapidly. But at the same time, a series of environmental problems emerged. The most obvious part is water pollution, such as industrial ,wastewater,, medical ,wastewater,, river pollution, heavy metal pollution, drinking water problem, and domestic sewage.

Lesson 8: Nitrification and Denitrification
Lesson 8: Nitrification and Denitrification

Breakpoint chlorination requires relatively high chlorine dosages per unit of ammonia present in the wastewater. In general, about 10 pounds of chlorine are required to oxidize one pound of ammonia-nitrogen. Because of the high chlorine demand, breakpoint chlorination is not used as the primary ammonia (or nitrogen) removal process.

Brief Analysis of Ammonia Nitrogen Wastewater Treatment ...
Brief Analysis of Ammonia Nitrogen Wastewater Treatment ...

The removal rate of ,ammonia nitrogen, was 90%-100% when the pH value was 6-7, the dosage of ,ammonia nitrogen, and ,chlorine, per mg was 10 mg and the exposure time was 0.5-2.0 H. Therefore, this method is suitable for low concentration ,ammonia nitrogen wastewater,.

Advanced wastewater treatment - SlideShare
Advanced wastewater treatment - SlideShare

When chlorine is added to wastewater containing ammonia-nitrogen, it initially reacts with hypochlorous acid to form chloramines. Continued addition of chlorine after "breakpoint" (occurring when free chlorine residual is formed) converts chloramines to nitrogen gas.

Ammonia Uses and Benefits | Chemical Safety Facts
Ammonia Uses and Benefits | Chemical Safety Facts

Ammonia,, a colorless gas with a distinct odor, is a building-block chemical and a key component in the manufacture of many products people use every day.It occurs naturally throughout the environment in the air, soil and water and in plants and animals, including humans. The human body makes ,ammonia, when the body breaks down foods containing protein into amino acids and ,ammonia,, then ...

Ammonia-Nitrogen Removal by Breakpoint Chlorination
Ammonia-Nitrogen Removal by Breakpoint Chlorination

Ammonia in wastewater and water was oxidized by chlorine to chiefly nitrogen gas with a residual NH 3 -N concentration of less than 0.1 mg/i. The chlorine was applied in the gaseous state to a stream of water and base before mixing with the wastewater, or as a solution of hypochlorite.

Understanding Laboratory Wastewater Tests: I. ORGANICS ...
Understanding Laboratory Wastewater Tests: I. ORGANICS ...

14/10/2010, · To ensure proper biological activity during the BOD test, a ,wastewater, sample: Must be free of ,chlorine,. If ,chlorine, is present in the sample, a dechlorination chemical (e.g, sodium sulfite) must be added prior to testing. Needs to be in the pH range of 6.5-7.5 S.U. If the sample is outside this range, then ,acid, or base must be added as needed.

Chlorination Chloramination and Chlorine Measurement
Chlorination Chloramination and Chlorine Measurement

One of the first uses of ,chlorine, in water and ,wastewater treatment, was addition to sewers in London, England in the 1830’s, ... formation of hypochlorous ,acid,. If the pH should drop below 4, ,chlorine, gas can come out of solution. ... Reactions of ,chlorine, with ,nitrogen, containing compounds (,ammonia,, nitrites and organic amines) ...

Total Ammonia in Water and Wastewater - CHEMSCAN
Total Ammonia in Water and Wastewater - CHEMSCAN

Ammonia can be found in surface water, groundwater and wastewater. When this water is disinfected through the addition of chlorine, there are interactions between the chlorine and ammonia that result in the formation of chloramines. The exact form of chloramine is a function of the chlorine to nitrogen ratio, pH and reaction time.

Physical-Chemical Nitrogen Removal Wastewater Treatment
Physical-Chemical Nitrogen Removal Wastewater Treatment

Chlorine is added to the wastewater being treated until the chlorine residual has reached a minimum (the breakpoint) and the ammonia is'removed. A typical breakpoint curve is shown in figure III-l. The reaction with ammonia is very rapid.

(PDF) Handbook of Water and Wastewater Treatment Plant ...
(PDF) Handbook of Water and Wastewater Treatment Plant ...

Handbook of Water and ,Wastewater Treatment, Plant Operations.pdf. 670 Pages. Handbook of Water and ,Wastewater Treatment, Plant Operations.pdf

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