Local treatment plants LOS
Local treatment facilities (LOS) are wastewater treatment systems designed to filter sewage effluents and are installed at specific locations to serve industrial sites, buildings, residential houses, production workshops, and other facilities. In Kazakhstan, local treatment plants are most commonly used for country houses and cottages, turning domestic wastewater treatment into a simple and automated process.
A local treatment station is installed on-site and processes liquid household waste using bacteria. These microorganisms break down organic substances into safe compounds that can later be disposed of. Wastewater treatment units can be used not only for residential purposes but also for commercial organizations, where the treatment of industrial wastewater plays a critical role in overall operations.
Advantages of wastewater treatment plants:
- High level of purification from contaminants and harmful components.
- Reliable and efficient equipment performance throughout its service life.
- Easy installation and convenient operation.
- Full compliance with environmental standards and safety requirements.
Local treatment plants in Astana and other cities of the Republic are available in various models and configurations, allowing the selection of the optimal solution for each specific facility. We also provide a full range of services — from installation and commissioning to ongoing maintenance of local wastewater treatment systems.
ZAVOD TEHMASH manufactures local wastewater treatment plants and related equipment in accordance with environmental safety requirements and technical standards. All our products comply with international quality standards. Our wastewater treatment units are distinguished by high capacity, long service life, durability, and structural strength.
You can order local treatment plants in Astana right now by contacting us through our official phone numbers. Our specialists will help you select a solution tailored to the specific conditions of your site and operational requirements. After finalizing all details, our team will install the LOS wastewater treatment system on a turnkey basis — you will only need to accept the completed project. Entrust your facility to experienced professionals and contact us today.
The homogenizer is designed to equalize the inflow of wastewater in terms of flow rate and composition. Wastewater enters the homogenizer at varying hourly flow rates depending on the population’s water usage schedule. From the homogenizer, water is supplied at a constant flow rate equal to the average hourly flow. The presence of a homogenizer ensures the most stable possible pumping of water to biological treatment, thereby improving the overall quality of biological purification. A trash-retaining basket with a smaller opening than in the SPS is also installed at the inlet of the homogenizer. This basket serves as a mechanical pre-treatment unit for debris removal.
After the homogenizer, wastewater enters the denitrifier, where a recirculation flow from the nitrifier and activated sludge from the secondary settling tank are added. Continuous mixing of wastewater and sludge takes place in the denitrifier to create optimal conditions for the denitrification process.
From the denitrifier, the wastewater mixture flows into the nitrifier, where purification with activated sludge occurs. Air is supplied to this compartment to support the activity of aerobic bacteria. A recirculation pump with a constant flow rate is installed at the outlet section of the nitrifier.
After the nitrifier, water enters the secondary settling tank. Due to the design of the tank, the flow direction changes: water first moves downward and then upward, which allows activated sludge to separate and settle at the bottom of the tank. The settled sludge is pumped back to the denitrifier, while the clarified water is directed to post-treatment.
In BioLOS-5, 10, 15, 20, and 30 units, a sand filter is used for post-treatment. Water passes through a sand layer and is freed from fine suspended contaminants. Air is supplied periodically to loosen the sand. In the BioLOS-50 unit, a drum microfilter is used. The operating principle of mesh drum filters is as follows: treated water continuously flows through the inlet pipe into the drum, is filtered through mesh filter elements, and enters the installation chamber, from where it flows over a weir into the discharge channel for purified water. The drum is not fully submerged in water; its upper section (approximately 0.15 of the diameter) remains above water. When the filter element reaches the upper position, contaminants are washed off by water jets from the flushing device into hoppers inside the drum, then discharged into the sewer system. The mesh drums are washed periodically depending on the level of contamination.
The main method of disinfecting biologically treated water in BioLOS systems is UV disinfection. After post-treatment, purified water passes through a UV disinfection unit, where bacteria are destroyed through exposure to ultraviolet radiation. If deeper disinfection is required, water after UV treatment is directed to a contact tank, where a hypochlorite solution is dosed. Each disinfection method fully meets the required standards, so simultaneous use of both methods is generally unnecessary. However, under increased disinfection requirements or in case of risk of failure of one method, both can be used.
The sludge stabilizer is designed for storage and stabilization of excess sludge. It is a tank equipped with internal aerators. If necessary, sludge stored in the stabilizer can help restart the treatment plant without importing sludge from another facility. Stabilized sludge is more suitable for dewatering processes, making stabilization an important stage before sludge dewatering.
The sludge dewatering unit is designed to separate water from stabilized sludge. For treatment facilities with a capacity of up to 100 m³/day, a bag-type dewatering system can be used. It consists of a metal frame with attached bags made of non-woven filter material. As sludge passes through the material, water drains out, leaving partially dewatered sludge inside the bag. The dewatered sludge is then disposed of in accordance with the approved project requirements. The design allows for repeated replacement of filled sludge bags with new ones. To accelerate the process and increase water removal efficiency, the use of a flocculant dosing system is recommended. For higher dewatering requirements, a screw-type sludge dewatering unit can be applied, which is more efficient in terms of water removal and final sludge moisture content compared to the bag-type system.
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ТОО «STEM Engineering»Адрес:
Республика Казахстан, г. Астана Ул. Асан Кайгы 8 НП16.
Телефоны:
+7 771 968 83 23
+7 702 478 81 60
Республика Казахстан, г. Астана Ул. Асан Кайгы 8 НП16.
Телефоны:
+7 771 968 83 23
+7 702 478 81 60
