Wastewater treatment, acid water neutralizing, water purification and disinfection

Modern Electroplating Wastewater Neutralization

Electroplating wastewater. Electroplating facilities and shops produce toxic solid waste in the form of ions of heavy metals, acids and alkalis that can cause water pollution. It is due to the electrochemical technology requiring large volumes of water.

Generally, the decontamination and neutralization of electroplating wastewater is performed by a special unit which uses reagent purification. Despite the mainstream use of this approach, it is not without...

Physico-chemical methods of ceramic production wastewater treatment: coagulation and adsorption

Water treatment process. Ceramic production forms two major streams of wastewater.

The first stream is formed at the stage of preparing the slip casting of ceramic products, their mandrel, filling and bonding of parts and includes, mainly, a large amount of suspended clay particles and glycerol. The second stream is formed in the preparation of ceramic colors and contains pigments, which are made from different metal oxides....

Removal of Heavy Metals from Wastewater Using Electromagnetic Nano-mills

Removal of heavy metals.. From the beginning of the 1970s, technological and scientific research has been increasingly directed towards protection and preservation of the environment, which is becoming more and more important around the world.

This is due to the irreversibility of negative anthropogenic impact, which is a real threat to the existence of mankind. It makes national conservation a number one priority.

The environment saturated...

Fish Processing Wastewater Treatment

The food industry, including the fish industry, is a source of organic compounds and water solutions of inorganic salts. These organic substances contain proteins and fats. They are washed by hygienic washing equipment with different types of detergents, resulting in different amounts of pollutants in the wastewater.

Their daily flow of concentrated wastewater varies between 5-7% of the total amount of wastewater. At the same time, the...

Biotechnology in dairy wastewater treatment

Dairy wastewater treatment. The technology of food preparation creates waste varying in quantity, pollution, state of aggregation, etc.

Wastewater of the food industry is considered concentrated by the level of contaminants. It contains a significant amount of organic substances.

The most contaminated is the wastewater from alcohol, meat, dairy and sugar industries. Since these enterprises are situated mainly in urban areas, some of their wastewater is...

The problem of treating wastewater containing pharmaceutical substances

Treating wastewater. The efficiency of wastewater treatment in sewage treatment plants depends on many factors, among them is the presence of toxic substances in wastewater which affect activated sludge.

Typically, a pharmaceutical substance (medicine) is a mixture prepared by treating natural materials by synthesis or chemical treatment. These chemicals are released into sewage in micro concentrations, but some of these chemicals have an extremely negative effect, which...

Wastewater Treatment With Microorganisms

Wastewater treatment. In the process of biological treatment of highly concentrated wastewater from industrial enterprises, food and light industries, the main role is played by microorganisms that colonize the treatment plants. These microorganisms use the substances contained in wastewater for their life-sustaining activity. These bacteria in the activated sludge are  Pseudomonas, Bacterium, Micrococcus, Bacillus, Corynebacterium, Thiobacillus. They perform the destruction of complex organic compounds and nitrogen compounds.

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Electrochemical treatment of industrial wastewater

Electrochemical treatment of wastewater. In recent years, the electrochemical methods of  industrial wastewater treatment became more popular than chemical treatment. It is due to a significant increase in prices of chemical reagents such as oxidizing agents, reducing agents, acids, alkalis, coagulants and flocculants. The other reasons to abandon chemical reagent treatment is the absence of secondary pollution of the treated water with anions and cations of salts, which...

Treatment of Wastewater From Galvanic Production

Wastewater system. The existing methods of electroplating wastewater treatment do not fully meet the requirements and regulations for wastewater discharge into waterways and the environment.

The reasons lie in the design and operation of wastewater treatment equipment. The difficulty is the comprehensive removal of the entire spectrum of pollutants used in industrial processes.

Furthermore, it is very important to...

Meat Processing Wastewater Treatment

Meat processing wastewater treatment. Rational use of raw materials and energy resources is a major problem of today. It is closely related to the protection of environment and, in particular, the protection and conservation of water resources.

In the 1980s the big meat processing complexes treated their wastewater mainly by mechanical methods. Now a significant number of small and medium enterprises release their practically untreated wastewater into...

Biological treatment of wastewater. Bioplatо

Bioremediation is a promising treatment of wastewater of different origins. Generally, a wastewater treatment plant is a complex engineering structure. In this article we will examine one such plant: a floating bioplato.

A bioplato is used for post-treatment and treatment of industrial wastewater, utilities, and surface water run-offs. It almost doesn’t require chemical reagents; it involves minimal costs and minimal maintenance.

The “bioplato” technology uses natural...

Tannery Wastewater Treatment

Tannery wastewater treatment.. Tannery wastewater is highly concentrated and contains contaminant particles of different size. This is due to a large variety of chemicals in leather industry: sulfuric acid, lime, soda ash, sodium sulfate, sodium sulfide, hypophosphite, ammonium sulfate, synthetic surfactants and finishing agents, kerosene, methyl esters, molasses etc. Synthetic surfactants are used in tanneries as solvents, wetting agents, detergents, emulsifiers, dispersants and accelerators of the processes.

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Removal of Coke and Byproducts From Wastewater

The problem of industrial wastewater treatment to remove dissolved organic matter, such as phenols, is important and difficult at the same time, despite the large amount of domestic and imported equipment innovations.

First, deep purification of wastewater dictates special rules and conditions that are difficult to implement in practice. Second, many effective methods of deep purification require significant resources and costs, the the use of hard to...

Sorbent wastewater treatment to remove heavy metals

Remove heavy metals. The presence of heavy metal ions such as copper, lead, iron, nickel, zinc in the water is a serious problem for the environment due to their high toxicity, and also due to the inability of microorganisms to process them. The main water pollutants with such metals are ferrous and non-ferrous metallurgy and machine-building facilities.

As a result of outdated technologies, a large amount of...

Dairy wastewater treatment

Dairy wastewater treatment . Dairy production is the second largest sector in the food industry. Milk processing plants are spread across the country due to the widespread availability of feedstock. The technology of food production creates large amounts of waste with different contaminants and concentrations. This problem needs to be solved to make dairy industry environmentally clean. It will automatically improve the environmental conditions in the area, because...

Wastewater treatment of baker's yeast production plant

Baker’s yeast.. Rational use of water resources and the protection of waterways from wastewater pollution is of paramount importance. The only way to effectively clean the waterways from pollution is to properly treat wastewater (especially industrial), improving the existing physical, chemical and biological treatment methods and developing new methods.

Wastewater from plants producing bakery’s yeast contain organic and inorganic contaminants. They are suspended mineral matter and volatile...

Treating wastewater from electroplating plants

Treating wastewater. Improving environmental safety through development of low-waste technologies, efficient treatment equipment, resource recovery wastewater treatment are the priority directions of the modern industry.

Natural water resources are becoming a critical problem of today, because of outdated industrial water supply processes, poor state of wastewater treatment plants and old wastewater treatment technologies. They all lead to aggravation of the environmental situation. While towns and settlements suffer...

Biological wastewater treatment to remove nitrogen and phosphorus compounds

Biological wastewater treatment. Wastewater treated with traditional biological methods contains large amounts of leftover biogenic substances (nitrogen and phosphorus compounds), which cause a lot of damage in natural water bodies.

The rapid growth of algae in the water causes secondary water pollution, intense coloration and reduction of oxygen concentration. Blooming water greatly complicates its use as drinking water for residences and industrial facilities. Therefore, the content of...

Industrial wastewater treatment from lead

Industrial wastewater. Wastewater containing lead is extremely toxic. This metal is hazardous and has toxic and mutagenic effects on living organisms.

It has an extremely negative effect on the human reproductive system. For these reasons, the presence of lead is strictly limited in the wastewater of industrial facilities. When industrial wastewater is discharged into municipal sewage systems, the maximum permissible discharge (MPD) of lead should not exceed...

Methods of chromium and heavy metals removal from wastewater

Heavy metals removal from wastewater. In recent years, the most widely used methods of wastewater treatment to remove chromium and heavy metals are chemical (reagent), ion-exchange and electrochemical.

Wastewater treatment with reagents

Reagent treatment of wastewater is based on the use of reducing agents for chromium purification and precipitation agents for heavy metals neutralization. The reagent treatment of chromium containing wastewater restores the hexavalent chromium to...