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Efficient disinfection performance of disinfectants containing NaDCC

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  Hypochlorites, the most widely used of the chlorine disinfectants, are available as liquid or solid. The most prevalent chlorine products in the United States are aqueous solutions of 5.25%–6.15% sodium hypochlorite, usually called household bleach. They have a broad spectrum of antimicrobial activity, do not leave toxic residues, are unaffected by water hardness, are inexpensive and fast acting, remove dried or fixed organisms and bio‒films from surfaces and have a low incidence of serious toxicity. Sodium hypochlorite at the concentration used in household bleach (5.25‒6.15%) can produce ocular irritation or oropharyngeal, esophageal and gastric burns. NaDCC   with  2,500 ppm available chlorine  is effective against bacteria in the presence of up to 20% plasma, compared with 10% plasma for sodium hypochlorite at 2,500 ppm. "Super oxidized water" has been tested against bacteria, mycobacteria, viruses, fungi and spores. Freshly generated super oxidized water is ra...

About Water Treatment Processes

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  Chemical Addition .  Once the pre-screened source water is received into the treatment plant, chemicals are added to help make the suspended particles that are floating in the water clump together to form a heavier and larger gelatinous particle, often called floc. In this process,  chemicals used for water treatment   are  added that reacts with the natural alkalinity in solution to form an insoluble precipitate. Coagulation and flocculation are often the first steps in water treatment. Chemicals with a positive charge are added to the water. The positive charge of these chemicals neutralizes the negative charge of dirt and other dissolved particles in the water. When this occurs, the particles bind with the chemicals and form larger particles, called floc.   A rapid mix unit is usually used where the coagulant is added to the water to provide a very quick and thorough mixing. The water mixing is then slowed to allow the water to come in contact with the...

What Is Calcium Hypochlorite (CHC)

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 Calcium hypochlorite is a white solid that you can purchase in granular or tablet form. It is used to disinfect water and kill off bacteria that could make you sick. Its uses extend to swimming pools, drinking water for small communities and industrial food processing. Calcium Hypochlorite CHC 70% ( also called bleaching powder) is a white crystalline solid, decomposes at 170 C, decomposes  in water and alcohol, not hygroscopic, practically clear in water solution. It is produced by passing chlorine gas over slaked lime. Chlorine is a general biocide substance killing germs, micro-organisms, algae, etc. The most widely used chloride chemical disinfectants are chlorine, ozone, chlorine dioxide and chloramine. Hypochlorite is an alternative choline source when chlorine gas is impractical. The commercially available liquid form is sodium hypochlorite (NaOCl). Hypochlorite is the common name for chlorate(I) salt.  Calcium Hypochlorite quickly forms hypochlorous acid (the kil...

What Is Caustic Soda Used for

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Sodium hydroxide (NaOH) is an odorless, white crystalline solid that absorbs moisture from the air. Caustic Soda Flakes is white transparent flaky in appearance. It can cause irritation to the eyes, skin, and mucous membrane; an allergic reaction; eye and skin burns, and temporary loss of hair. Workers may be harmed from exposure to sodium hydroxide. The level of harm depends upon the dose, duration, and work being done. Sodium hydroxide is used to manufacture soaps, rayon, paper, explosives, dyes, and petroleum products. It is also used in processing cotton fabric, laundering and bleaching, metal cleaning and processing, oxide coating, electroplating, and electrolytic extracting. It is commonly present in commercial drain and oven cleaners. Caustic soda or sodium hydroxide has many different uses, such as clearing drains and making soap. The main uses of caustic soda include its use as a drain pipe cleaner, removing blockages in drain pipes, removing grease accumulated in the oven, a...

Uses of TCCA in Swimming Pool Water Treatment

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TCCA, also called Trichlor and Chloreal, is an organic compound with various domestic and industrial applications. It is a white, crystalline powder that is commonly used as an outstanding source of chlorine. Usually containing varying mixes of chlorine, it can be found with up to 90%, 86% or 50% chlorine concentration. One of the characteristics of the compound is its strong “chlorine odour” which you would usually notice when it is unmixed. There’s a lot of science behind how TCCA functions , including its production. For instance, TCCA is  prepared from cyanuric acid  by way of a reaction with chlorine gas and sodium hydroxide. Its preparation as such is to enable it display strong biocide, bactericide and disinfectant qualities. These make it extremely useful for sanitation and disinfection of a great variety of matter. Importantly, TCCA is made to be very human friendly. When used properly, it causes no side effects. It can be used to purify drinking water, making it perf...

Applications And Effects of Sodium Dichloroisocyanurate Dihydrate

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Sodium dichloroisocyanurate dihydrate is a solid chlorine bleaching agen t  generally used as an alternative to sodium hypochlorite for water treatment . Calibration substance for the photometric determination of active chlorine. Guidelines for the analysis of waste water and surface water . Fengbai  Sodium dichloroisocyanurate dihydrate  can be used as a chlorine source to convert alkoxyl- s -triazines into  N -chlorinated alkoxy- s -triazines. Sodium dichloroisocyanurate  for Household Water Treatment Household water treatment using sodium hypochlorite (NaOCl) has been recognized as a cost-effective means of reducing the heavy burden of diarrhea and other waterborne diseases, especially among populations without access to improved water supplies. Sodium dichloroisocyanurate (NaDCC), which is widely used in emergencies, is an alternative source of chlorine that may present certain advantages over NaOCl for household-based interventions in development settings. ...

Know More About Features of Polyaluminium Chloride

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In the field of water treatment engineering, the demand for polyaluminium chloride PAC coagulant in various countries is increasing rapidly, especially in water treatment, it has gradually replaced the traditional flocculant and has become the mainstream flocculant. A large number of application practices have proved that the use of polymerization chlorination rate to replace traditional iron and aluminum salt coagulants can significantly improve the purification efficiency of water plants, reduce treatment costs, and improve effluent water quality. Its main advantages are as follows 1. Excellent coagulation, turbidity, decolorization and humus removal effects and a wider range of pH. PAC not only has a strong coagulation and turbidity removal effect, but also has obvious decolorization and humus removal effects. To achieve the best flocculation under the same treatment conditions, the dosage of polyaluminum needed to be reduced by 2/3 compared with traditional aluminum salt. Under th...