What Is Wastewater Disinfection?

What Is Wastewater Disinfection?

WASTEWATER DISINFECTION There are a number of chemicals and processes that will disinfect wastewater, but none are universally applicable Disinfection can be attained by means of physical or chemical disinfectants. The agents also remove organic contaminants from water, which serve as nutrients or shelters for microorganisms. Disinfectants should not only kill microorganisms. Disinfectants must also have a residual effect, which means that they remain active in the water after disinfection. A disinfectant should prevent pathogenic microorganisms from growing in the plumbing after disinfection, causing the water to be recontaminated. For chemical disinfection of water the following disinfectants can be used: - Chlorine (Cl2) - Chlorine dioxide (ClO2) - Bromine chloride (BrCl) - Alcohols - Soaps and detergents - Hydrogen peroxide - Several acids and bases physical disinfection of water the following disinfectants can be used: - Ultraviolet light (UV) - Electronic radiation - Gamma rays - Sounds - Heat Wastewater Disinfection Surface waters have been the focal point of water disinfection regulations since their inception, as groundwaters (like wells) have been historically considered...
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4 Common Effluent Treatment Plant Problems and Solutions

4 Common Effluent Treatment Plant Problems and Solutions

Wastewater treatment and its many methods is not at all adverse to facing challenges along the way, while still being very important to countless people around the globe. It is estimated that upwards of £150 billion will be needed to repair or replace Us and UK stormwater and wastewater management plants, as we saw in the UK recently with the frost destroying many pipelines across the country. But infrastructure is not the only issue facing these facilities. Today will we take a look at four common problems wastewater treatment plants are facing today and maybe some possible solutions.   1. Staffing The Problem: When it comes to wastewater treatment, it’s important to have highly skilled individuals who have the necessary training and education to get the job done right. These individuals are responsible for everything from pipe leaks to electrical malfunctions. And chemical applications And unfortunately, there aren’t enough of them. The Solution: Sadly there will always be a huge demand for highly skilled and knowledgeable individuals in the...
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Coagulation and Flocculation Water Treatment Specialists

Coagulation and Flocculation Water Treatment Specialists

Gpc Clear Solutions are Coagulation and Flocculation Water Treatment Specialists https://youtu.be/U_LVYZHrhbU Emulsion and powder flocculants At GPC Clear Solutions Limited, our highly efficient coagulants and flocculants are designed for solid-liquid separation of suspended solids in wastewater. Chemical coagulation and flocculation are effective in the removal of suspended solids in wastewater. During the solid-liquid separation process, coagulants are added which destabilises the colloidal suspension. Flocculants are then introduced to collect the coagulated solids resulting in larger flocs of suspended solids content in the wastewater. The larger flocs separate resulting in clear water. The majority of these chemicals added to the process do not stay in the aqueous phase. They are attached to the solids that are further processed and removed from the treatment area. Our high standard chemicals come in various grades and forms which are available for use depending on the application. Anionic emulsion grade polymers A range of high molecular weight anionic water in oil emulsions. These products are suitable for inline dilution before being added...
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What chemicals are used in an Effluent Treatment Plant?

What chemicals are used in an Effluent Treatment Plant?

What chemicals are used in an Effluent Treatment Plant? One form of wastewater treatment is to use an Effluent Treatment Plant; this method is used to purify industrial wastewater for its reuse and safe release into the environment. Industrial effluents contain various materials depending on the industry.  One of the main contributing factors to Industrial wastewater charges are the quantity of Chemical Oxygen Demand (COD) and Suspended Solids (SS) present in the effluent. Some effluents contain oils and grease, and some contain toxic materials (e.g. Cyanide). Effluents from food and drink factories contain degradable organic pollutants whilst effluents from metal plating factories contain inorganic pollutants.  This means that all effluents and wastewater streams are different and contain a diversity of impurities and therefore site-specific chemical treatment is needed. The Effluent Treatment Plant needed for each process can greatly vary as every effluent behaves differently.  Effluent that naturally floats will require chemicals and equipment that aids this, e.g. DAF plant. Conversely, Effluent that...
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What Is Polyacrylamide

What Is Polyacrylamide

What is Polyacrylamide? Polyacrylamide otherwise known as PAM is an organic polymer formed from acrylamide sub-units. It has many uses and is known throughout many industries or its versatility and quality, but one of the main purposes is in the separation of solids/liquids in the municipal and industrial wastewater sectors. Initially, it is produced with a simple, repeating, linear chain structure, but can be modified to form highly structured, branched and cross-linked variants. As part of the manufacturing process, the ionic characteristics of the polymer can be manipulated to achieve varying degrees of anionic (negative charge) or cationic (positive charge) qualities and non-ionic (minimal charge), which is a key factor during the polymer selection process. Uses: Polyacrylamide is used to flocculate solids in a liquid. This process applies to water treatment and processes like papermaking and screen printing. Polyacrylamide can be supplied in a powder or liquid form, with the liquid form being sub-categorised as a solution and a white emulsion polymer. The nature of...
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What Are Phosphates In Water Treatment

What Are Phosphates In Water Treatment

What are Phosphates? Enhanced biological phosphorus removal (EBPR) is a sewage treatment configuration applied to activated sludge systems for the removal of phosphate. The common element in EBPR implementations is the presence of an anaerobic tank (nitrate and oxygen are absent) prior to the aeration tank. Phosphorus removal processes Removing phosphorus from wastewater involves the incorporation of phosphate into Total Suspended Solids and the subsequent removal from these solids. Phosphorus can be incorporated into either biological solids for example microorganisms or chemical precipitates. Phosphate precipitation Chemical precipitation is used to remove the inorganic types of phosphate by the extension of a coagulant, and a mixing of wastewater and coagulant. The multivalent metal ions most commonly used are Aluminium, iron and calcium. Aluminium and Iron: Alum or hydrated aluminium sulphate is widely used precipitating phosphates and aluminium phosphates (AlPO4). The primary reaction is: Al3+ + HnPO43-n ↔ AlPO4 + nH+ This reaction is knowingly simple and must be considered in the light of the many challenging reactions and their associated...
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What Is Coagulation In Wastewater Treatment

What Is Coagulation In Wastewater Treatment

What is Coagulation in wastewater treatment? how can flocculants and coagulants help your business? How can they save you potential fines and help you stay compliant? Have a read of our article and get in touch with our team who will be happy to answer any questions. Coagulation and flocculation describe the chemical process of contact and adhesion whereby the particles of a dispersion (colloids) form a larger-size cluster (flocs or flakes) allowing them to be more easily removed from water (e.g. by settling). The coagulation-flocculation processes facilitate the removal of suspended and colloidal particles. It’s used in the first stage of solids-liquids separation: settling, flotation or filtration. In water treatment, coagulation-flocculation involves the addition of polymers that clump the small, destabilized particles together into larger aggregates so that they can be more easily separated from the water. Coagulation is a chemical process that involves neutralization of charge whereas flocculation is a physical process and does not involve neutralization of charge. The coagulation-flocculation...
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