Water before being discharged into the sewer system must meet all approved standards. To do this, it is usually cleaned with a filter cartridge for storm sewers. The principle of operation of this node is quite simple. Dirty streams after rains end up in the cartridge tank, where they are repeatedly cleaned. First, a rough preliminary cleaning takes place before water enters the box. A special grate on the lid traps branches, leaves and other large debris.
Steps of sewage cleaning with a filter cartridge
Further, the water is in the upper compartment of the device, where it is cleaned by a non-woven filter from the oil film and other elements. At the final stage, for final purification, the water passes through a sorption backfill in the second chamber. There is a separation of organic compounds, heavy metals, small particles and radionuclides.
Description
Storm sewer filter cartridge representsis a fairly simple device, and it works the same way. It consists of a fairly durable plastic case, which has a cylindrical shape. There is a filter inside. The cartridge is divided into two compartments. The first one is designed for mechanical water purification using polyester fibers.
The second compartment is designed for sorption treatment, which involves the passage of sewage through a hydrophobic sorbent. For easier installation of the filter in storm sewer wells, mounting parts are provided on the device body.
Purpose and scope. More about design features
The filter cartridge for storm sewers is designed to purify rain and melt water from all kinds of suspended particles, oil products, oils, fats and other organic substances. Structurally, the cartridge is a device:
- with a lattice welded bottom;
- shell;
- removable slat cover;
- flange.
The last one is at the top of the shell. Between the lower and upper gratings, the inner space is filled with filter material. It can be a combination of several layers. Each material has different properties. The flange is used for installation on the support ring. She is in a sewer well.
Removable cover allows the replacement of filter materials if the quality of the treated water has fallen below the standards. filter cartridge forstorm sewers can be used in those places where water, falling into the storm water inlet, takes various harmful impurities like oil or mechanical.
Installation is usually done on:
- car washes;
- gas station;
- STO;
- near chemical warehouses;
- near garage complexes;
- in industrial and manufacturing areas;
- in places of private individual activity that is related to car repair.
Types of filter cartridges
Today, several types of filters are known, among them we should highlight:
- coal;
- sorption;
- combined.
When buying, you should get a recommendation from the seller. It will be based on the technical characteristics of the device. This should include the degree of wastewater treatment, throughput, dimensions and weight. The capacity of the sewer filter cartridge, the photo of which you can see in the article, usually ranges from 4 to 32 m3/h. Efficiency will depend on the size of suspended particles. With an increase in their fraction, the content of the output will be less.
Application Features
Depending on the technical characteristics of the models, conclusions can be drawn about the features of the use of certain options. The device filter cartridge "Fops" for storm sewers was describedhigher. Now it's time to find out what are the specifications of some appliances.
If you have a device marked FOPS-MU-0.58-0.9 in front of you, then the flange diameter in this case is 580 mm. The capacity will vary from 2 to 4 m3/h. The height is 900 mm. The diameter of the well is 580 mm. The filter cartridge FOPS-MU-2.0-1.2 has a larger flange diameter. It is 1920 mm. The capacity is 16 m3/h. The height is 1200 mm. The diameter of the well is 2000 mm.
On filter cartridges for storm sewers "Fops" the cleaning indicators will be as follows: if suspended solids are contained at the inlet in a volume of 400 mg per liter, then after filtration this figure will be 10 mg per 1 liter. If combined purification from suspended impurities is carried out, then with the input of oil products in the amount of 50 mg per liter, at the output this volume will be 0.05 mg per 1 liter.
If the actions were correct during the installation and maintenance of the devices, the filter cartridge will be ready to last up to 5 years. The filter media will remain effective for up to 12 months of continuous use. But once a month it will be necessary to clean the cover of the device from stones, leaves, and also to replace or flush the block. The last actions are carried out once a year or taking into account pollution.
Installation features
Installing a filter cartridge for storm sewers does not require dismantling the storm drain, installation can be done in an existing system in several ways. Firstprovides for installation on a support ring made of steel. It is located between the rings of the reinforced concrete well.
Installation of the cartridge will be carried out according to a different technology, if the drains enter the well through pipes. Installation is carried out inside the well, however, the element must be located below the point of the supply pipeline. The storm sewer filter cartridge must be installed on top of the base of the well if runoff enters through a manhole.
Description of the Polychem model
Filter-cartridges for storm sewers "Polykhim" as a filler have a unique nanostructured coal. On sale you can find special modifications for roads and bridges. The quality of cleaning reaches a level suitable for fishery ponds.
The case is reliable and durable, made of HDPE. Designs are convenient for regular service. They are suitable for operation in seismic regions and cold climatic zones. The manufacturer has provided system overflow protection.
Such sewer filter cartridges are offered in several modifications. The specific parameters of the device are selected taking into account the composition of the wastewater, the performance of the system, taking into account the requirements for water quality, as well as the type of sorbents, diameter and height. The diameter of the filter cartridge can have a limit from 580 to 1920 mm. Height varies from 900 to 1800 mm. The diameter is selected taking into account the diameter of the storm water well, where the filter cartridge itself is installed.
The choice of height will depend on:
- from the required performance;
- well heights;
- pollutant concentrations;
- requirements for water quality.
Filter cartridges marked FPM are used for mechanical treatment of wastewater from film oil products, suspended solids and emulsified particles. If the effluents contain ammonium and metal ions, then an FPC filter cartridge should be used. For sorption purification from phenol, oil products and manganese ions, an FPS cartridge is used.
Why choose a rain filter cartridge
The cleaning element does not require electrical connection, personnel intervention and complex maintenance. Installation is carried out without the reconstruction of storm sewers and earthworks. Installation is carried out using a support flange in the form of a ring. It is installed under the saddle of the hatch, while the slab is not dismantled, and the well cover is not touched.
The design is easy to disassemble, so reloading the sorption filler is easy. The module is characterized by high strength, it has a cylindrical shape and selective porous layers. Any modern building requires external engineering networks. The operation of the building without them is impossible. Installation of systems requires the use of materials of appropriate quality, as well as the professionalism of the performers. The guarantor of a long and flawless service will be a competent approach to laying engineering networks. Treatment plants forstorm systems ensure the purity of the water that comes to the disposal of man.
Multistage cleaning
Surface runoff filter cartridges of all sizes and types can be used not only as individual units designed to remove a specific pollutant, but also used as a combination. In this case, several cartridges are installed, which are located in successive wells. This provides deeper and more comprehensive wastewater treatment.
The design of cleaning cartridges allows them to be used in bulk mode, where there is no possibility of connecting to electricity. The system will work on a non-pressure principle. With a multi-stage scheme, the filter cartridge is installed in a network sewer well. The diameter of each of them can be from 1 to 2 m. The filter cartridges must be arranged in series. The exception is the primary well, which acts as a sump.
