The sequence of wastewater treatment of industrial enterprises. Waste water disposal

Straining

To screen out large suspended particles (the density is almost equal to the density of water), the effluents are filtered through gratings and sieves installed in their path.

Filtration

Instead of sieves, fabric, porous or fine-grained filters are used.

There are special devices - micro-strainers, which are a drum equipped with a mesh. Screened impurities are washed off into the catch hopper with a stream of water spouting from special nozzles.

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In domestic and industrial water supply systems, special treatment facilities are installed, in which the remains of dirty effluents accumulate over time. Silt deposits contain a huge amount of hazardous chemicals. If they get into the soil, they cause irreparable harm not only to the soil, but also to groundwater. Therefore, pouring contaminated liquids without prior neutralization is prohibited.

Disposal of wastewater from industrial enterprises is a mandatory measure, since liquid waste is classified as hazard class 4. They can poison the water used by people and permanently upset the balance of land and water resources in the area. Therefore, in order to competently disinfect liquid products, responsible entrepreneurs are increasingly turning to recycling professionals.

How is sewage sludge disposed of?

For efficient processing of dirty suspensions, specialists use a complex of specialized equipment. Sediments are taken to a high-tech site for their neutralization. As a result, valuable material can be obtained from liquid impurities for land irrigation, heat generation, construction and other purposes. Unsuitable sludge is burned or used as fertilizer after processing.

Methods for the disposal of sewage sludge are selected taking into account the concentration and chemical composition weigh. Skilled workers resort exclusively to environmentally friendly methods of neutralization and disposal. The pyrolysis method is widely used. It provides for the decomposition of organic compounds under thermal influence. Harmful substances are not emitted.

Properly executed waste disposal provides:

preservation of a favorable environmental background on the ground, without the presence of odor and toxic emissions into the air, soil and water;

obtaining useful energy, industrial, construction and other resources;

proper functioning of the water supply system and local treatment facilities;

execution of production processes without the risk of being penalized for improper disposal of dirty liquid.

At the legislative level, the need for disinfection and processing of sludge is controlled by the Federal Law "On Production and Consumption Waste". Failure to comply with sanitary-epidemiological and environmental requirements entails considerable penalties.

Domestic and industrial wastewater: recycling is profitable at ECOUMWELT

Qualified employees from the ECOUMWELT company have extensive experience in the field of industrial waste and the processing of dirty effluents of any type. They have modern equipment and know perfectly how to neutralize sewage deposits without compromising environment.

If you contact ECOUMWELT, then the disposal of sewage sludge will be carried out on the most favorable terms for you:

with the conclusion of an agreement and the execution of official reporting documentation confirming the processing in accordance with the regulations;

with payment for professional service at the lowest rates available to all;

with the provision by the company of its own specialized transport and equipment for recycling procedures.

If you want to consult on the issues of wastewater treatment and quickly order the service, call us or write to e-mail. Disposal of liquid waste is carried out on time, in Moscow and with a trip to the region!

EcoTechprom-South company offers wastewater disposal services. All work is carried out in full compliance with the regulations adopted in the field of waste collection and disposal.

What is included in the complex of works for the disposal of wastewater

Wastewater disposal includes the following areas:

• collection of industrial and domestic wastewater, as well as rainwater;
• cleaning of cesspools and septic tanks;
• maintenance of toilets with chemical sterilization;
• maintenance of sewerage networks;
• collection of sludge from sewage treatment plants.

The complex of works also includes transportation and neutralization of wastewater.

The purpose of domestic wastewater treatment should be their use in agriculture, reuse detergents, obtaining methane from organic components. In the agro-industrial complex, prepared effluents can be in demand for watering plants, creating mixtures for hydroponics, and in fish farming.

Who benefits from our services

Wastewater disposal services are necessary for both legal entities and individuals. The processing of the sludge that remains after the treatment of discharges is needed by the treatment facilities of heavy and light industries, car washes. We are also needed by the city utilities and the private housing sector, which does not have a central sewerage system.

How is the processing of sewage treatment plant sludge

Wastewater treatment of large enterprises is organized at the place of production. The scope of our services includes the transportation and disposal of sludge that accumulates during the treatment of wastewater. It consists of heavy metals, surfactants and petroleum products that are harmful to the environment. Therefore, much attention is paid to the processing of the settled layer.

Waste disposal is carried out according to the following technologies:

• deposition (evaporation) on sludge sites;
• composting for later use as fertilizer;
• burning;
• pyrolysis.

The most efficient and environmentally friendly processing technology is pyrolysis. It consists in the thermal decomposition of organic substances without access to oxygen. From the inorganic component, pure slag (metal oxides) is obtained, which is used as a mineral filler for cement, filling dumps in road construction, and landscape planning. It is also used in the production of vibropressed paving slabs.

The question of which technology will be used for the disposal of sewage sludge is decided for each enterprise individually. It depends on local conditions and composition of the mass.

To receive the sludge, sewage silt-sucking machines are used. Pumping out and transportation of the contents of the drain pits is carried out by sewer-flushing and combined equipment equipped with vacuum pumps.

Our advantages

"EcoPromtech-South" is a specialized company licensed to carry out work on the disposal of wastewater. We employ highly qualified specialists who have valuable knowledge and skills in the field of technological processes of processing. Thanks to a large fleet of special equipment, we can cope with tasks of any complexity. Our customers receive all the documents necessary for reporting to the supervisory authorities. We work on a contractual basis, we guarantee compliance with the terms of waste removal, environmental friendliness of the process.

Call the company "EcoPromtech-South", and wastewater disposal of your organization will be carried out using the most economical and efficient technology.

largest ecological problem CIS countries - contamination of their territory with waste. Of particular concern are wastes generated in the process of urban wastewater treatment - sewer sludge and sewage sludge (hereinafter referred to as SS).

The main specificity of such waste is its two-component nature: the system consists of an organic and mineral component (80 and 20%, respectively, in fresh waste and up to 20 and 80% in waste after long-term storage). The presence of heavy metals in the composition of waste determines their IV hazard class. Most often, these types of waste are stored under open sky and cannot be further processed.

For example, By now, more than 0.5 billion tons of WWS have been accumulated in Ukraine, the total area for storage of which is approximately 50 km 2 in suburban and urban areas.

The absence in world practice of effective methods for the disposal of this type of waste and the resulting aggravation of the environmental situation (pollution of the atmosphere and hydrosphere, rejection of land areas for landfills for storing WWS) indicate the relevance of finding new approaches and technologies for involving WWS in economic circulation.

In accordance with Council Directive 86/278/EEC of 06/12/1986 "On the protection of the environment and especially soils when using sewage sludge in agriculture" in the countries of the European Union in 2005, WWS were used as follows: 52% - in agriculture, 38% - burned, 10% - stockpiled.

Russia's attempt to transfer foreign experience incineration of WWS on domestic soil (construction of waste incineration plants) turned out to be inefficient: the volume of the solid phase decreased by only 20% with simultaneous release into the atmospheric air a large number gaseous toxic substances and products of combustion. In this regard, in Russia, as in all other CIS countries, their storage remains the main way of handling WWS.

PERSPECTIVE SOLUTIONS

In the process of searching for alternative ways to dispose of WWS by conducting theoretical and experimental studies and pilot testing, we have proved that the solution of the environmental problem - the elimination of accumulated waste volumes - is possible through their active involvement in economic circulation in the following industries:

• road construction(production of organo-mineral powder instead of mineral powder for asphalt concrete);
• construction(production of expanded clay insulation and effective ceramic bricks);
• agricultural sector(production of high-humus organic fertilizer).

Experimental implementation of the results of the work was carried out at a number of enterprises in Ukraine:

• pavement of the heavy equipment storage area MD PMK-34 (Lugansk, 2005), section of the bypass road around Lugansk (at pickets PK220-PK221+50, 2009), pavement of the street. Malyutin in Anthracite (2011);

BY THE WAY

The results of observations of the condition and quality of the road surface indicate its good performance, exceeding traditional analogues in a number of indicators.

• production of a pilot batch of effective lightweight ceramic bricks at the Lugansk brick factory No. 33 (2005);
• production of biohumus based on WWS at the treatment facilities of Luganskvoda LLC.

COMMENTS ON THE INNOVATION OF THE USE OF WWS IN ROAD CONSTRUCTION

Analyzing our accumulated experience of waste disposal in the field of road construction, we can highlight the following: positive points:

• the proposed recycling method allows involving large-tonnage waste in the sphere of large-tonnage industrial production;
• the transfer of WWS from the category of waste to the category of raw materials determines their consumer value - the waste acquires a certain value;
• in ecological terms, waste of hazard class IV is placed in the roadbed, the asphalt concrete surface of which corresponds to hazard class IV;
• for the production of 1 m 3 of asphalt concrete mix, up to 200 kg of dry WWS can be disposed of as an analogue of mineral powder to obtain high-quality material that meets the regulatory requirements for asphalt concrete;
• the economic effect of the adopted method of disposal takes place both in the field of road construction (reducing the cost of asphalt concrete) and for Vodokanal enterprises (preventing payments for waste disposal, etc.);
• in the considered method of waste disposal, the technical, environmental and economic aspects are consistent.

Problem moments related to the need:

• cooperation and coordination of various departments;
• wide discussion and approval by specialists of the chosen method of waste disposal;
• development and implementation of national standards;
• amendments to the Law of Ukraine dated 05.03.1998 No. 187/98-ВР “On Waste”;
• development of technical specifications for products and certification;
• amendments to building codes and regulations;
• preparation of an appeal to the Cabinet of Ministers and the Ministry of Environmental Protection with a request to develop effective mechanisms for the implementation of waste disposal projects.

And finally, one more problematic point - can't solve this problem alone.

HOW TO SIMPLIFY ORGANIZATIONAL POINTS

On the way to the widespread use of the considered method of waste disposal, organizational difficulties arise: cooperation is necessary between various departments with different visions of their production tasks - public utilities (in this case, Vodokanal - the owner of the waste) and a road construction organization. At the same time, they inevitably have a number of questions, incl. economic and legal ones, such as “Do we need it?”, “Is it a costly mechanism or profitable?”, “Who should bear the risks and responsibility?”

Unfortunately, there is no common understanding that the general environmental problem - the disposal of WWS (essentially waste from society accumulated by public utilities) - can be solved with the help of public utilities in the road construction industry by involving such waste in the repair and construction of public roads. That is, the whole process can be carried out within one communal department.

FOR YOUR INFORMATION

What is the interest of all participants in the process?
1. The road construction industry receives sediment in the form of an analogue of mineral powder (one of the components of asphalt concrete) at a price much lower than the cost of mineral powder and produces high-quality asphalt concrete pavement at a lower cost.
2. Sewage treatment companies dispose of accumulated waste.
3. The society receives high-quality and cheaper road surfaces while improving the environmental situation in the territory of its residence.

Taking into account the fact that the disposal of WWS solves an important environmental problem that has national importance, in which case the state should be the most interested participant. Therefore, under the auspices of the state, it is necessary to develop an appropriate legal framework that would meet the interests of all participants in the process. However, this will require a certain time interval, which in a bureaucratic system can be quite long. At the same time, as mentioned above, the problem of precipitation accumulation and the possibility of solving it are directly related to the utility industry, therefore it must be solved here, which will drastically reduce the time for all approvals, and narrow the list of necessary documentation to departmental standards.

VODOKANAL AS A PRODUCER AND CONSUMER OF WASTE

Is cooperation of enterprises always necessary? Let us consider the option of disposing of accumulated WWS directly by Vodokanal enterprises in their production activities.

NOTE

Vodokanal enterprises after repair work on pipeline networks obliged to restore the damaged roadbed, which is not always done. So, according to the results of our approximate average annual assessment of the volume of such works in the Luhansk region, these volumes range from 100 to 1000 m 2 of the coverage area, depending on the locality. Considering that the structure of large enterprises, such as Luganskvoda LLC, includes dozens of settlements, the area of ​​​​restored pavements can reach tens of thousands of square meters, which requires hundreds of cubic meters of asphalt concrete.

The need to get rid of waste, the properties of which make it possible to obtain high-quality asphalt concrete as a result of its disposal, and, most importantly, the possibility of its use in the repair of disturbed road surfaces are the main reasons for the possible use of the considered method of waste disposal by Vodokanal enterprises.

It should be noted that the WWS of treatment facilities in various settlements are similar in their positive impact on asphalt concrete, despite some differences in chemical composition.

For example, Asphalt concrete modified by precipitation in Luhansk (Luganskvoda LLC), Cherkassy (Azot Production Association) and Kievvodokanal meets the requirements of DSTU B V.2.7-119-2003 “Asphalt concrete mixes and asphalt concrete for road and airfield. Specifications» (hereinafter - DSTU B V.2.7-119-2003) (Table 1).

Let's discuss. 1 m 3 of asphalt concrete has an average weight of 2.2 tons. With the introduction of 6-8% sediment as a substitute for mineral powder in 1 m 3 of asphalt concrete, 132-176 kg of waste can be disposed of. Let's take an average value of 150 kg/m 3 . So, with a layer thickness of 3-5 cm, 1 m 3 of asphalt concrete allows you to create 20-30 m 2 of the road surface.

As you know, asphalt concrete consists of crushed stone, sand, mineral powder and bitumen. Vodokanals are the owners of the first three components as artificial technogenic deposits: crushed stone - replaceable loading of biofilters; sand and deposited sediment are waste from sand and silt sites (Fig. 1). To turn this waste into asphalt concrete (useful disposal), only one additional component is needed - road bitumen, the content of which is only 6-7% of the planned output of asphalt concrete.

Existing waste (raw materials) and the need to carry out repair and restoration work with the possibility of using these wastes are the basis for creating a specialized enterprise or site within the structure of Vodokanal. The functions of this unit will be:

• preparation of asphalt concrete components from existing waste (stationary);
• production of asphalt mix (mobile);
• laying the mixture in the roadway and its compaction (mobile).

The essence of the technology for preparing the raw material component of asphalt concrete - mineral (organo-mineral) powder based on WWS - is shown in Fig. 2.

As follows from Fig. 2, feedstock (1) - sediment from dumps with a moisture content of up to 50% - is preliminarily sieved through a sieve with a mesh size of 5 mm (2) to remove foreign debris, plants and loosen lumps. The sifted mass is dried (in natural or artificial conditions) (3) to a moisture content of 10-15% and is fed for additional screening through a sieve with meshes of 1.25 mm (5). If necessary, additional grinding of lumps of mass (4) can be performed. The resulting powdered product (microfiller is an analogue of mineral powder) is packed into bags and stored (6).

Similarly, crushed stone and sand are prepared (drying and fractionation). Processing can be carried out at a specialized site located on the territory of the treatment plant, using improvised or special equipment.

Consider the equipment that can be used at the stage of preparation of raw materials.

vibrating screens

Vibrating screens from various manufacturers are used for screening WWS. So, vibrating screens can have the following characteristics: “The adjustable rotation speed of the vibration drive allows you to change the amplitude and frequency of vibration. Hermetic design allows the use of vibrating screens without an aspiration system and with the use of inert media. The material distribution system at the entrance to the vibrating screens allows you to use 99% of the screening surface. The vibrating screens are equipped with a split class wiring system. End replacement of screening surfaces. High reliability, easy setup and adjustment. Quick and easy deck replacement. Up to three screening surfaces .

Here are the main characteristics of the VS-3 vibrating screen (Fig. 3):

• dimensions - 1200 × 800 × 985 mm;
• installed power - 0.5 kW;
• supply voltage - 380 V;
• weight - 165 kg;
• productivity — up to 5 t/h;
• sieve mesh size - any on request;
• price - from 800 dollars.

Dryers

For drying bulk material - soil (sediment) and sand - in an accelerated mode (as opposed to natural drying), it is proposed to use drum dryers SB-0.5 (Fig. 4), SB-1.7, etc. Consider the principle of operation of such dryers and their characteristics (Table 2).

Through the loading hopper, wet material is fed into the drum and enters the internal nozzle located along the entire length of the drum. The nozzle provides uniform distribution and good mixing of the material over the drum section, as well as its close contact with the drying agent during pouring. Continuously mixing, the material moves to the exit from the drum. The dried material is removed through the discharge chamber.

Delivery set: dryer, fan, control panel. In dryers SB-0.35 and SB-0.5, the electric heater is built into the structure. Production time - 1.5-2.5 months. The cost of such dryers is from 18.5 thousand dollars.

Moisture meters

To control the moisture content of the material, various types of moisture meters can be used, for example, VSKM-12U (Fig. 5).

Let's bring specifications such a moisture meter:

• humidity measurement range - from dry state to full moisture saturation (real ranges for specific materials are indicated in the device passport);
• relative measurement error - ± 7% of the measured value;
• depth of the control zone from the surface - up to 50 mm;
• calibration dependences for all materials controlled by the device are stored in non-volatile memory for 30 materials;
• the selected type of material and measurement results are displayed on a two-line display directly in humidity units with a resolution of 0.1%;
• the duration of a single measurement is no more than 2 s;
• duration of holding indications - not less than 15 s;
• universal power supply: autonomous from the built-in battery and from the mains ~ 220 V, 50 Hz via a network adapter (it is also a charger);
• dimensions of the electronic unit - 80 × 145 × 35 mm; sensor — Æ100×50 mm;
• total weight of the device - no more than 500 g;
• full service life - at least 6 years;
• price - from 100 dollars.

FOR YOUR INFORMATION

According to our calculations, the organization of a stationary point for the preparation of asphalt concrete aggregates will require equipment in the amount of 20-25 thousand dollars.

Production of asphalt concrete with OSV filler and its laying

Consider the equipment that can be used directly in the process of manufacturing asphalt concrete with OSV filler and its laying.

Small Asphalt Mixing Plant

For the production of asphalt concrete mixtures from the production waste of Vodokanal and their use in the road surface, the smallest possible complex in terms of capacity is proposed - a mobile asphalt concrete plant (mini-APZ) (Fig. 6). The advantages of such a complex are low price, low operating and depreciation costs. The small dimensions of the plant allow not only its convenient storage, but also energy-efficient instant start-up and production of finished asphalt concrete. At the same time, the production of asphalt concrete is carried out at the place of laying, bypassing the stage of transportation, using a mixture high temperature, which provides a high degree of compaction of the material and excellent quality of the asphalt concrete pavement.

The cost of a mini-assembly plant with a capacity of 3-5 tons/hour is 125-500 thousand dollars, and with a capacity of up to 10 tons/hour - up to 2 million dollars.

Here are the main characteristics of mini-ABZ with a capacity of 3-5 t / h:

• outlet temperature — up to 160 °С;
• engine power - 10 kW;
• generator power - 15 kW;
• volume of bitumen tank - 700 kg;
• fuel tank volume - 50 kg;
• fuel pump power - 0.18 kW;
• bitumen pump power - 3 kW;
• exhaust fan power - 2.2 kW;
• skip hoist motor power - 0.75 kW;
• dimensions - 4000 × 1800 × 2800 mm;
• weight - 3800 kg.

In addition, to carry out a full cycle of work on the production and laying of asphalt concrete, it is necessary to purchase a container for transporting hot bitumen and a mini-skating rink for laying asphalt (Fig. 7).

Vibratory tandem road rollers weighing up to 3.5 tons cost 11-16 thousand dollars.

Thus, the entire complex of equipment required for the preparation of materials, production and placement of asphalt concrete can cost about 1.5-2.5 million dollars.

CONCLUSIONS

1. The application of the proposed technological scheme will solve the problem of waste disposal from sewerage stations by involving them in economic circulation at the local level.

2. The implementation of the method of waste disposal considered in the article will make it possible to bring water utilities into the category of low-waste enterprises.

3. Through the use of WWS in the production of asphalt concrete, the list of services provided by Vodokanal can be expanded (the possibility of repairing intra-quarter roads and driveways).

Literature

1. Drozd G.Ya. Utilization of mineralized sewage sludge: problems and solutions // Ecologist's Handbook. 2014. No. 4. S. 84-96.
2. Drozd G.Ya. Problems in the sphere of treatment with deposited sewage sludge and methods for their solution // Water Supply and Water Supply. 2014. No. 2. S. 20-30.
3. Drozd G.Ya. New technologies for sludge disposal - a way to low-waste sewage treatment facilities // Vodoochistka. Water treatment. Water supply. 2014. No. 3. S. 20-29.
4. Drozd G.Ya., Breus R.V., Bizirka I.I. Deposited sludge from urban sewage. Recycling Concept // Lambert Academic Publishing. 2013. 153 p.
5. Drozd G.Ya. Proposals for the involvement of deposited sewage sludge in the economic turnover // Mater. International Congress "ETEVK-2009". Yalta, 2009. C. 230-242.
6. Breus R.V., Drozd G.Ya. A method for utilizing sediments from local sewage waters: Patent for the core model No. 26095. Ukraine. IPC CO2F1 / 52, CO2F1 / 56, CO4B 26/26 - No. U200612901. Appl. 12/06/2006. Published 09/10/2007. Bull. No. 14.
7. Breus R.V., Drozd G.Ya., Gusentsova E.S. Asphalt-concrete sumish: Patent for coris model No. 17974. Ukraine. IPC CO4B 26/26 - No. U200604831. Appl. 05/03/2006. Published 10/16/2006. Bull. No. 10.

• Sewage treatment facilities: issues of operation, economics, reconstruction

• Decree of the Government of the Russian Federation of 01/05/2015 No. 3 "On Amendments to Certain Acts of the Government of the Russian Federation in the Sphere of Water Disposal": what's new?

The need of the population, industrial enterprises and Agriculture in fresh water grows from year to year. All countries of the world are concerned about its deficit, and the problem of the rational use of water reserves is becoming one of the priorities in solving state problems. The sources of the greatest water consumption are petrochemical, energy and pulp and paper enterprises, metallurgical plants, livestock industries. Water used in any way goes into the category of wastewater and the question of its further consumption creates a need to search for new types of its purification and reuse.

Existing waste treatment methods

The concept itself means the processing of water that has already been used in various ways so that it becomes again suitable for use. The cleaning process, regardless of the method, is a rather complex undertaking, and implies the strictest observance of technology. It can be compared with the work of an ordinary enterprise, since there is a raw material with which a number of actions have to be carried out - waste water, and a finished product, which is the ultimate goal of these actions - purified water.

Of all the existing processing methods, the appropriate method is determined individually for each type of wastewater, and depends on the nature of the pollution and the degree of harmfulness of impurities. There are the following methods:

• mechanical;
• biological;
• physical and chemical;
• chemical;
• combined.

Technology mechanical way processing lies in the fact that by settling the raw material and subsequent filtration, up to 75% of coarse particles that cannot be decomposed are removed from it. These indicators are typical for domestic water treatment. Effluent, as a product of industrial consumption, after application mechanical way cleaning, loses up to 95% of all harmful impurities that got into it during use. After settling, the water passes through devices that trap insoluble impurities, such as sieves, gratings, sand traps, manure traps, septic tanks. These devices are able to retain coarse particles that are directly in the body of water. Those that linger on the surface due to their properties are removed by oil traps, settling tanks, gasoline and oil traps.

Application chemical method is the use of reagents. They react with pollutants, and in the form of insoluble grains they are removed to the residue. Thanks to the application chemical method the amount of insoluble particles is reduced by 95%, and soluble particles during processing - by 25%.

Physico-mechanical process Purification of polluted water according to the types of application of a particular method is carried out using several technologies. More often than others, for the dissolution of inorganic impurities, the destruction of organic and poorly oxidized substances, they resort to the use of oxidation, extraction, coagulation, and sorption. The use of electrolysis and ultrasound is also widely used.

Electrolysis destroys almost all harmful organic substances, and removes acids, metals and a number of other destructive substances from inorganic substances. This method is most effective for industrial water treatment at enterprises using lead and ore, as well as producing paint and varnish products. The use of ultrasound, ion exchange resins, ozone give excellent results.

biological method is based on the application of the laws of the natural process of biochemical and physiological self-purification of water bodies, and consists in the use of a number of biological devices, such as biofilters, volumetric aerotanks, biological ponds. The latter are nothing more than specific reservoirs in which wastewater is purified thanks to the organisms that inhabit the reservoir. And biofilters are coarse-grained material covered with the thinnest bacterial film, which creates a biological oxidation reaction, which leads to the destruction of contaminants.

Aerotanks - specialized tanks huge size from reinforced concrete, the cleansing basis of which is activated sludge, consisting of microscopic living beings and bacteria. All kinds of organic substances contained in wastewater, under the influence of the air flow entering the reinforced concrete structure, create for these living beings an optimal environment for vigorous activity, the result of which is the gluing of a number of bacteria into flakes and the release of unique enzymes that mineralize organic pollution. The flakes, increasing in volume, settle, separating from the purified water, which then enters other tanks. The smallest living organisms remaining in the sludge layer of sewage, such as rotifers, amoeba, ciliates and some others, devour non-coagulating bacteria, thereby rejuvenating the bacterial composition of the sludge layer.

Before biological treatment in aerotanks, wastewater undergoes mechanical treatment, and after the receipt of treated water biologically, into clean tanks, it undergoes a process of removing disease-causing bacteria by chlorination.

Biological wastewater treatment has excellent results for the removal of hazardous waste generated during the production of oil refineries, pulp and paper and other chemical enterprises, as well as for the treatment of municipal water waste.

The choice of technology for processing

Depending on the quantitative and qualitative level of pollution, the choice of technology for its purification and further application is determined. The degree of pollution depends on the industry and the technological processes that are the basis of their production. The most dangerous are those that burden the water with inorganic toxic impurities and poisons.

Today, the task of cleaning and processing wastewater obtained in the course of production activities falls on the shoulders of the heads of enterprises, and the state environmental services monitor the quality of this task. Undoubtedly, choose the best technological scheme pretty hard.

Sanitary standards are distinguished by high requirements for the quality of purified water and vary depending on how it will be used in the future: discharged into water bodies or re-participated in the production process of an enterprise. In any case, it is mandatory to comply with the established standards for the admissibility of the concentration of impurities in treated waters.

The video clearly shows the processing scheme: