Pumping stations for wastewater. Sewage pumping stations (sewage pumping stations)

Housing options:

• made of fiberglass (high strength, low weight, low cost of installation and maintenance);
• made of metal (double anti-corrosion coating).

SPS from the Ekolos plant are equipped with proven pumps of foreign and domestic production: Flygt, Grundfos (Grundfos), KSB, ABS, Wilo, DAB, Srednevolzhsky Machine-Building Plant LLC, Vzlet JSC.

Types of sewage pumping stations

which you can buy in Moscow at Ecolos Group:

• single-hull,
• multihull,
• with remote shut-off valves,
• with dry chamber,
• in a horizontal housing.

Advantages of purchasing stations from TD Ekolos

• factory quality,
• 5 year warranty,
• installation and dismantling of the pump is simple due to special fasteners,
• reliable operation of the system thanks to installed sensors for monitoring equipment operation,
• savings on maintenance due to the presence of a convenient control panel,
• earthquake resistance.

How to buy KNS?

Fill out the questionnaire and our specialists will select and calculate the price of equipment with delivery to Moscow or the Moscow region to the location of the facility.

You can get advice by calling the hotline listed on the website.

“NIS” (Fig. 1) are designed for lifting and pumping wastewater in the event that drainage of this water by gravity is not possible (for example, due to the terrain), and also when this is not economically feasible (requires a large depth of the gravity collector) .

Sewage pumping stations "NIS" can be used to discharge domestic, industrial, storm and drainage wastewater into the city sewerage network. In addition to this, KNS " PRAdest» can be used to lift wastewater to treatment plants, as well as release purified water into a reservoir.

2. DESIGN FEATURES SEWAGE PUMPING STATIONS "PRAdest"

The sewage pumping station produced by NIS is a cylindrical body made of a spiral polyethylene pipe, in which internal piping from HDPE pipes is factory installed, including shut-off, control and safety valves in the form of gate valves and check valves. The pump station has a reinforced double bottom for installing submersible pumps, a stainless steel ladder, a platform for maintenance and access to fittings, as well as an insulated hatch made of polyethylene or stainless steel (at the customer’s request). If the pumps installed in the pumping station are heavy, it is possible to manufacture an above-ground pavilion to accommodate lifting equipment, as well as a pumping station control cabinet. The lifting equipment is a hoist with a manual or electric drive, moving along an I-beam using a special carriage. Also, a shelter pavilion is provided to prevent unauthorized access to the equipment and automation of the pumping station.

The materials used in the production of complete pumping stations, polyethylene and stainless steel, are not subject to corrosion, thereby eliminating the need for anti-corrosion protection of the housing and ensuring a long service life of the entire structure. The service life of the polyethylene casing of a sewage pumping station is at least 50 years. The operation of the pumping equipment is also designed for a long service life - at least 15 years, depending on the conditions of the specific manufacturer.

Explanations for the drawing: 1-submersible pump; 2-automatic pipe coupling system; 3-wedge gate valve; 4-ball check valve; 5-inlet pipe; 6-pressure pipe; 7-float level sensors; 8-pumping station control cabinet; 9-bracket for fastening guide pipes; 10 guide pipes for raising/lowering pumps; 11-lifting chain; 12-ladder; 13-service hatch cover; 14-ventilation pipe; 15-housing pump station made of spiral polyethylene pipe; 16-cable entries; 17-garbage basket; 18 guide pipes for raising/lowering the basket; 19-internal pipeline; 20-operational site.

NIS has developed a number of standard sewage pumping stations. In addition to standard solutions, our company manufactures and assembles products according to customer drawings.

Standard model range of KNS "NIS".

Note:
The data in the table may differ from the actual ones, depending on the specific conditions and technical specifications.

3. OPERATING PRINCIPLE

Sewage pumping stations "PRAdest" operate fully automatically and do not require the constant presence of maintenance personnel. The signal to turn the pumps on/off comes from float level sensors suspended inside the housing, which is transmitted to the control cabinet of the pumping station. A float switch is an automatic device that is used in water supply and wastewater systems to control pumps as liquid level alarm sensors. Each float switch is set to its appropriate response level. It has a built-in mechanism that interrupts the current flow when the contact opens and thus transmits the corresponding information to the control device. With an explosion-proof isolation relay, float switches can also be used in explosive environments. These relays reduce the current to a level at which, even in the event of a malfunction, a spark does not occur, causing ignition of the pumped or external medium. Each float switch hangs from above into the working chamber and moves freely within its limits, being on the surface of the liquid or suspended in the air. If the medium level is exceeded, it tilts relative to the conventional axis of the liquid, which leads to the activation of the corresponding mechanism in the control device.

When the pumping station operates as 1 worker + 1 standby, both pumps are installed inside the pumping station, and each of them is capable of providing the required performance of the pumping station. With this scheme, the CNS operates in three modes:

1. Design load - pumps, turning on alternately, pump out incoming wastewater;

2. Peak load - the amount of incoming wastewater exceeds the capacity of one pump. When the pumping station is filled to the appropriate level, the backup pump is additionally switched on;

3. Emergency situation - both pumps, when operating simultaneously, cannot cope with the incoming wastewater, or one of the pumps has failed. When the SPS is filled to the appropriate level and the float sensor is triggered, the following occurs:

a) a duplicate signal is sent to restart both pumps;
b) an alarm signal is sent to the control cabinet;
c) a signal is sent to the dispatcher, or in the absence of remote dispatch, a sound and/or light alarm is triggered.

The alarm may also turn on in the following cases:
- incorrect phase sequence;
- network overload;
- overheating of the pump electric motor;
- malfunction of the float switch.

The pumps are switched off when the pumped liquid drops to the level at which the float sensor triggers the general pump shutdown.

4. ADVANTAGES OF A POLYETHYLENE SEWAGE PUMPING STATION

Installation advantages:

Production of the station in a factory with appropriate quality;
- short production times;
- complete factory readiness of the pumping station allows installation to begin immediately after delivery to the site, which significantly reduces the time it takes to complete it;
- the body is made of polyethylene - has complete tightness, which eliminates the need for waterproofing measures, as well as a high degree of strength, which, with low weight, greatly facilitates installation;
- savings in usable space, since local pumping stations do not require the construction of large reinforced concrete reservoirs and take up significantly less space;
- wide choice of design solutions (see catalogue);
- the ability to place all the necessary equipment inside the station, which makes it possible to manufacture a pumping station without ground-based structures.

Operational advantages of CNS:

Reduced energy costs, since the tank fill level control system allows modern pumps to operate systematically, turning on as needed;
- the use of high-tech submersible pumps guarantees uninterrupted operation for many years;
- automation of the work of the CNS allows you to reduce the number of service personnel, due to the fact that it does not require their constant presence and monitoring of the operation of the system. In the event of an emergency, a signal about the operation of the equipment can be sent to the dispatcher’s console, computer or mobile phone;
- to service the pumping station there is no need to go down to the bottom of the tank - the pumps are lifted by lifting mechanisms and devices along guide rods and are automatically disconnected from the diaphragm connector;
- the use of modern high-tech materials - polyethylene and stainless steel, ensures a significant service life of the station. The housing is completely inert to corrosive environments and is also an excellent dielectric;
- complete sewerage stations provide low noise and vibration levels;
- the presence of several local pumping stations instead of one centralized one is preferable from an environmental point of view, since the failure of a centralized pumping station on a city scale leads to emergency discharges of wastewater onto the terrain and environmental problems.

5. USE IN EARTHQUICK AREAS AND SEVERE CLIMATIC CONDITIONS

The NIS company produces complete prefabricated sewage pumping stations in low-density polyethylene (HDPE) housings and sells them at a competitive price. They are suitable for use in the most difficult conditions.

For seismic regions up to 9 points inclusive, we offer buildings of increased resistance, with increased wall thickness and ring stiffness class SN8 (8 MPa/m2).

For regions of the far north and permafrost zones, buildings are made with insulated walls to the depth of soil freezing in these areas. It is also possible to use a self-regulating heating cable for the entire height of the housing; the price for such equipment will be appropriate.

It is the pump station made of plastic that allows you to pump wastewater to places where it is purified and processed. In addition, the KNS sewerage station eliminates the need to lay gravity sewers at a fairly large depth.

When choosing a sewage pumping station, you must be guided by the following parameters: the volume and type of liquid that flows through the collector, the type of pumps and the way they operate, as well as the hydrogeological conditions of the area.

If we take into account the liquid that the station can pump, it can be divided into the following types:

• Domestic waste;
• Storm drains;
• Industrial effluents.

Production of containers from polyethylene.

The sewage pumping stations produced by our company meet modern quality requirements. Our products have the highest operational and technical characteristics, and thanks to the use of advanced technologies, pumping stations work perfectly in adverse conditions, including in areas with an increased risk of earthquakes.

Our company produces its products on high-tech equipment using modern technologies. The pumps made of polyethylene use submersible pumps from global manufacturers such as Grundfos and KSB. The use of submersible pumps is due to their high efficiency, minimal size, lack of need for a cooling system, low energy consumption and ease of installation.

Cost of the KNS housing with internal wiring, including VAT

The cost of sewage pumping stations made of polyethylene includes the following equipment:

• KNS building
• KNS cover
• Service area
• Sewage basket with guides and chains
• Cable channel for powering pumps
• Metal staircase
• Ventilation tube

The design of pump stations is a cylindrical body made of thick-walled polyethylene pipe (diameter from 1000 mm to 2400 mm, with wall thickness from 60 to 160 mm). To simplify maintenance, the SPS design is equipped with an operating platform and a ladder. When using the station in harsh climates, a heated block container is installed, which is mounted above the station and facilitates the maintenance of automation and shut-off valves.

But for the manufacture of plastic parts of the pumping station, special low-density polyethylene (HDPE) is used. After all, HDPE is much more durable than other types of polyethylene. The combination of all of the above parameters ensures a significant service life and ease of maintenance for pumping stations, for example, the tank lasts for more than 50 years, and the units for more than 15 years. The above facts once again prove the simplicity and reliability of sewage pumping stations from the PLAST|PRODUCT company.

Domestic wastewater is transported to the disposal site through a pipeline. They usually move by gravity, in pipes laid with a slight slope. If the significant length of the main line does not allow for the movement of water, a sewage pumping station is installed.

Scheme of a three-chamber septic tank

Design and principle of operation of a sewage pumping station

A sewage pumping station is a sealed container equipped with special units for transporting wastewater. Depending on the model and purpose, the dimensions and components of the installation may change, but the receiving tank and pumps are unchanged parts of the station.

The principle of operation of sewage pumping stations KNS is to receive wastewater moving by gravity and pump it into a pressure pipeline. It transports liquid waste to treatment facilities. The system is protected from liquid return by installing a check valve. In the event of an unusual situation, an additional pump is connected to operation or an alarm is activated to indicate a breakdown.

SPS design elements

1. Sealed container - a wastewater collection tank is usually made of a durable polymer that provides high resistance to aggressive environments. When installing a SPS with your own hands, you use a homemade storage tank made of concrete rings with a sealed bottom and high-quality waterproofing. The tank neck must be at ground level so that inspection and necessary repairs of equipment can be carried out through it. A ladder is installed inside the station, a pipe system and pumps are installed. The container has a special section or basket for collecting large debris. A ventilation system must be installed. The housing is equipped with a hatch that cuts off unpleasant odors from the tank.
2. Sewage pumps are submersible units that lift wastewater. Using guides or chains, they are lowered to the bottom of the container and forcibly pumped waste into the transport pipeline. The units are equipped with knives that crush large fractions of feces and garbage. For domestic stations, two pumps are installed - the main and backup ones, and for municipal installations a larger amount of equipment is provided. Industrial pumps are not equipped with cutting parts, because the wastewater contains solid particles that can cause breakdown of the units.
3. Pipe system - combines pumping units into one system that transports wastewater to the central sewer system. The pipeline is equipped with check valves that prevent the return movement of water.
4. Fill sensors (floats) - devices used to turn pumps on and off. When the tank is filled with wastewater to a certain level, the float rises and turns on the pump motor. The pumping of liquid to the discharge point begins. After the level decreases, the sensor lowers and turns off the equipment.

Attention. Ventilation plays an important role in stable ventilation operation. It consists of two pipes facing the roof. One of them serves to supply fresh air, and the second to remove gases.

Managing the work of the CSC

Control over the filling level and operation of the sewage pump is carried out automatically. Sensors that control the process are located at different levels:

• the first is a small volume of waste;
• second - the float turns on the pump for pumping, operation in normal mode;
• third - the sensors are triggered when the volume of wastewater increases above the norm, turns on backup equipment;
• the fourth is an emergency device that is triggered at a critical level of wastewater; this is usually a consequence of a pump breakdown and requires the intervention of repairmen.

The automated operation of the station can be transferred to manual control; such actions are taken in case of repairs, when cleaning the tank and when starting the pumping station for the first time. Instruments are controlled and power is supplied from an electrical control panel, which is installed near the station or taken to a convenient place.

Advice. To ensure uninterrupted operation of the sewage pumping station, it is necessary to provide a backup power source. Installing significant power requires large batteries; the best option in this case would be to use a gasoline generator, which will provide power to the pumping station after a power outage.

Types of sewer stations

The need to install a station arises when it is impossible to organize gravity drainage of waste due to the terrain. Based on the type of design and installation, they are divided into vertical and horizontal. SPS are also classified according to the type of liquid being pumped:

• for domestic and economic waste;
• collection and pumping of storm water;
• industrial waste;
• drains from large utility networks.

Industrial stations are characterized by high productivity and power; they process significant volumes of wastewater.

Household sewer pumping units can be installed underground near the house, directly on plumbing equipment (toilet) or in a room where wastewater from several appliances is supplied with subsequent pumping.

Attention. Requirements for the installation and connection of sewer stations are regulated by SNiP 2.04.01-85.

What to consider when choosing a CNS

When choosing the best option for installing a sewerage station, several aspects are taken into account:

• material used to make the tank body;
• installation depth of the supply system;
• pump design;
• control method;
• station power;
• placement method;
• quantity and composition of pumped liquid.

Common tank materials are polyethylene, polypropylene and fiberglass. Polymer compounds are resistant to moisture, durable and strong. A plastic container is easy to shape into the desired shape, it is airtight, lightweight and less expensive than metal.

The internal parts are made of material resistant to aggressive environments. Typically stainless steel is used. When operating a pumping station in a climate with low temperatures, a heating element is installed, and the tank body and manhole cover are insulated with polyurethane.

Depending on the performance, the stations can be compact in size and power up to 4 kW or used to pump out wastewater from entire villages. Miniature models are installed in the house; they are equipped with submersible sewage pumps that lift wastewater to 5-11 meters. The installations have a presentable appearance, low levels of vibration and noise, and a guarantee of environmental safety. Medium power models have the widest range; they are used for pumping domestic and industrial wastewater. Large pump stations are equipped with powerful multi-channel pumps and are used in urban sewer systems. They are equipped with a filtration container into which large fractions and debris fall before entering the pumping chamber.

Installation of a pumping station in the house

Types and features of sewage pumps

The basis of the pumping station is its pumping equipment; it is this that pumps household wastewater from plumbing fixtures into the septic tank, storm water and waste into the pressure pipeline. In order for the units to cope with their functions, it is necessary to correctly select the type of sewage pump, power, control features, and take into account the temperature of the pumped wastewater. There are three main types of equipment:

1. Submersible.
2. Console.
3. Self-priming.

Submersible pump

Submersible sewage pumps are the optimal choice for pumping stations. The unit is installed at the bottom of the tank and operates submerged. Using a sewer pump in a private house, you can pump out water from the basement or septic tank. Taking into account the special operating conditions, the equipment body is made of cast iron or stainless steel; these materials are resistant to aggressive environments. Installation of the pump is simple: a pipe is installed at the bottom, and the unit, when lowered along the guides under its own weight, is connected to it. The operation of the equipment is controlled automatically in the form of a float switch.

Two types of pumps are used: fecal and drainage. The first is designed for water without large particles, and the second works without restrictions. The point is in its design - on the side of the pipe, a cutting element is installed in the pump, which is capable of grinding fecal matter, paper and other debris. The maximum immersion depth of the unit depends on the manufacturer, usually it is 7-8 meters. The equipment can pump contaminated liquid with various impurities with a diameter greater than 35 mm. Advantages of the submersible type:

• ease of maintenance and operation;
• reliability and durability;
• versatility;
• ability to function at low temperatures.

Submersible pump

Cantilever pump

The unit assumes dry installation and is used in industrial pumping stations. Before installing the equipment, it is necessary to install a separate foundation and connect the pipeline. Access to the pumps is unrestricted and they are easy to maintain and repair. Advantages of the unit:

• the ability to vary performance when changing the power of the electric motor and other design parts;
• reliability;
• ease of maintenance.

Self-priming pump

The equipment is designed for pumping heavily polluted wastewater. The large diameter of the pipe avoids clogging. The device is used for installation in municipal and industrial stations. Pump advantages:

• capable of functioning at negative temperatures when installing a heating element;
• has a convenient design of the electric motor with flange mounting;
• pumps wastewater with large fractions;
• Double mechanical seal ensures high tightness.

Fecal pump: design, types, purpose

The fecal pump is manufactured in a corrosion-resistant housing; its main feature is installation on the drive shaft of the grinding mechanism. This could be a knife or a cutting edge. Sewage pumps with a grinder operating from 220 V are installed in apartments, private houses and institutions where there is a risk of pipeline clogging. Their flow channels have a large diameter and are capable of receiving wastewater with fractions up to 10 cm. The start and stop of the equipment is controlled using automation.

The principle of operation of a fecal pump with a grinding mechanism

The equipment is installed near the toilet; after flushing, the water enters the storage chamber. A special sensor detects increasing air pressure and sends a signal to a relay that starts the electric motor. At the same time, the knives are turned on and grind the garbage. The liquid under pressure is sent to the outlet pipe and transported through it to the riser. After pumping out, the sensor detects a decrease in pressure and turns off the engine relay.

Fecal pump with grinder

Types of pumps

Stations equipped with such a pump are compact, versatile, operate silently, and are easy to maintain. The units are manufactured taking into account the conditions in which they will have to pump wastewater. Sewage pumps for the home are divided into four groups:

1. A device with a grinder for pumping out low-temperature domestic wastewater. The unit is designed for wastewater with large fractions, for example, from a toilet. It is installed in a toilet on the ground floor, when the riser is located far away and the general level of the sewer system is higher than that of the devices located here. When the storage tank is filled with waste, pumping and operation of the knives is switched on. The liquid is forced into the general system.
2. A unit without blades, designed for hot waste from a bath or sauna, as well as a shower and washing machine. Estimated water temperature up to 90 degrees.
3. Pump without cutting parts for pumping wastewater from a swimming pool or flooded basement. The model has the most affordable price.
4. Equipment with a grinder for transporting hot waste. A universal unit that can be used in a private home or bathhouse if there is a toilet.

Installation methods

1. Submersible sewer pump - installed in a sewer pit or tank, completely immersed in liquid. The most popular option for household use.
2. Semi-submersible - the pumping part of the unit is lowered into the water, and the engine remains on the surface. This model can be used for pumping water at high temperatures.
3. External - the device is installed near a sewer well into which intake hoses are lowered. Such equipment can be transported to the desired location.

Installation of a submersible pump

Advice. When installing a submersible pump, it is necessary to provide automatic protection for the blades and electric motor. If solid debris gets under the shredder, the entire unit may break down.

Sewage pumps for the kitchen

Kitchen drains contain grease and food debris and are often the cause of blockages. Installing a sewer pump for the kitchen allows you to solve several problems at once:

• place kitchen appliances below the level of utility lines without re-equipping the premises;
• shredding of waste using pump cutting parts for safe transportation through small diameter pipes;
• transfer of kitchen equipment without the need to comply with the mandatory slope of the pipeline.

Types of kitchen units

Stationary pump - a compact device located in a convenient location and ensures transportation of wastewater over long distances.

Sanitary equipment - a pump for sewerage in the apartment, connected to the sink or sink in the kitchen. Its design does not include a grinder, so its use is limited by the degree of wastewater contamination. The unit is designed for temperatures of 30-45 degrees.

Sanitary pump for sink

Forced sewerage is small equipment equipped with knives for grinding waste. The sealed design prevents unpleasant odors from entering the room. The pump has high performance; it crushes and moves wastewater horizontally over 100 meters.