Энергонезависимое очистное сооружение с биофильтром BioBox Mega 50 с системой механической и биологической очистки

**Title:** Three-chamber septic tank for domestic and industrial sewage, 30 m3
**Description:**
Three-chamber treatment plant for domestic and industrial sewage with a volume of 30m3 (30000l) and a capacity of 10000 liters per day.
BioBox®-SO50 overflow sewage treatment plants with R-Tub biofilter are autonomous, non-volatile treatment facilities designed for mechanical and biological treatment of industrial and domestic sewage.
Three manholes with tightly screwed lids with a diameter of 800 mm are provided for servicing the chambers.
The standard version is supplied with 500 mm high manholes for installation in the ground at a depth of 600 to 700 mm from the ground surface to the inlet sewer pipe (septic tank inlet).
Three-chamber sewage treatment systems should be used when the plant capacity is more than 5 m3 per day. For up to 5000 liters, 2-chamber treatment facilities should be used.
Depending on the depth of the supply pipeline, the treatment systems are supplied with different heights of service wells.
* Manhole 500 mm — supply pipeline depth 600-700 mm.
* Manhole 1000 mm — supply pipeline depth 1100-1200 mm.
* Manhole 1500 mm — supply pipeline depth 1600-1700 mm.
* Manhole 2000 mm — supply pipeline depth 2100-2200 mm. (Reinforced version of the «Premium» series with a 20% reinforced body).
**Choosing the volume of the treatment plant**
*For a private house*
When choosing an installation, it is important to determine the required volume. We determine this volume based on the calculation of 600 liters of system volume. The resulting figure is calculated according to SNiP — 200 liters per 1 person per day multiplied by the residence time of wastewater in the septic tank (at least three times the inflow volume). From a family of 3 people, we calculate 200×3 people=600×3 days=1800 liters. The required septic tank volume should be 1800 liters.
*For industries*
In any production facility, people involved in the production process usually only use the toilet and sink to wash their hands. Therefore, for industrial enterprises, it is necessary to take the calculation from 50 to 100 liters per 1 employee per working shift. As a rule, water consumption does not exceed 50 liters.
The facility is capable of serving from 30 to 35 people.
*For cafes, restaurants, hotels*
Depending on the volume of water consumption.
**General description of operation and calculation**
The non-volatile local treatment plant LOS is a non-volatile, simplest (independent) biological wastewater treatment system operating with gravity flow of wastewater sequentially through 3 chambers, separating suspended and solid substances that precipitate and settle to the bottom, where an anaerobic wastewater treatment process takes place and additional biological treatment on a removable R-TUB biofilter installed in a special compartment at the outlet of the system.
The calculation of the required cubic capacity of the septic tank is carried out according to the accepted standards (SNiP 2.04.03.85 «Sewerage. External networks and structures»): with a wastewater flow rate of up to 5 m3 / day — at least three times the daily inflow at a rate of 170 to 250 l / day for each resident.
**Advantage of construction**
Structurally, the septic tank is a high-strength sealed container with massive stiffening ribs divided into 2 (two) chambers equipped with nozzles, extension necks and lids, cuffs for inlet and outlet pipes with a diameter of 110 mm, ready for installation and operation.
A two-section sewage treatment plant reduces operating costs due to the absence of aerators and electricity-powered compressors that inject air to operate the aeration elements.
**Principle of operation of LOS**
The operation of the two-volume treatment system (sump) Rodlex-SO5000-2 is based on mechanical and biological treatment of incoming, contaminated domestic wastewater.
Contaminated water entering the treatment plant flows through pipes laid from the house to the system at a negative angle (1-2 cm per 1 meter). As from the septic tank to the filtration fields. The openings in the septic tank are located at different heights, which allows the effluent to move freely from chamber to chamber to the filtration area, to the infiltrators, to the wells.
Chamber 1 of the septic tank is the receiving compartment in the tank (septic chamber), where untreated, black and gray wastewater from the toilet, kitchen, bathroom, jacuzzi, etc. enters. In the first chamber, primary settling of the liquid takes place according to the principle of graphitation, where surfactants (surface-active substances) in the form of films and grease float to the surface, and heavy inclusions (sand and other inorganic compounds) precipitate. Then the sewage wastewater enters the second chamber.
Chamber 2 of the septic tank is a biological wastewater treatment chamber (anaerobic fermentation), in which biological wastewater treatment and oxidation take place by means of anaerobic bacteria and microorganisms living without oxygen supply (a deficiency of free oxygen is maintained). The effluent flows by gravity to the final post-treatment in filtration fields, in a filtering well or through an intermediate, inspection well into drainage fields.
3 compartment — additional fermentation chamber.
**The main stage is wastewater post-treatment!**
Wastewater that has undergone mechanical and biological treatment in the septic tank enters the ground, where the most important part of the final treatment of wastewater separated from surfactants and suspended particles takes place — natural treatment of wastewater in filtering fields.
For the effective operation of any septic tank or deep biological wastewater treatment system, it is important to understand where to put the conditionally treated effluent, where it will go after the sewage system. The presence of normal, permeable soils (sand, loam) ensures the system’s full normal operation. In poor soils (clay, quicksand), the presence of a high level of groundwater, wastewater post-treatment is almost impossible. In this case, it is necessary to build artificial filtration fields created from gravel and sand with a large area, filtration blocks with a storage capacity for gradual absorption by the soil.
**Filtration and absorption fields for the disposal of treated wastewater**
A filtering area can be created for the final natural post-treatment of conditionally treated effluent (65-70%) from R-Block infiltration blocks connected to each other, from a UN filtering well, from a drainage perforated pipe in geotextiles or coconut braid, which protects the pipe from the ingress of sand and other small particles in the soil.
For the effective operation of the septic tank and living bacteria, the system is insulated and useful bacteria and microorganisms in powder or liquid form are added systematically (1 -2 times) per month. These bacteria for the septic tank allow to accelerate the process of biological treatment, reduce the volume of sludge, odor in the treatment plant.
At a high level of groundwater, it is possible to install a septic tank with the correct organization of the filtration field, as a rule, with VUGV, drainage pipes are installed under the filtration fields with a pumping station mounted next to it, consisting of a sealed well with a float pump, where excess groundwater enters, followed by drainage of groundwater into a drainage ditch. Or filtration fields are organized on the ground (an artificial dune of sand and earth).
**Recommendations for additional equipment**
Rodlex specialists recommend installing an additional receiving well of the KDU,D1000 series after sewage systems before filtration fields for a control and inspection well where a check valve is installed (at the inlet, in the well) in order to prevent (reverse) the ingress of excess groundwater formed from melting snow after winter from the filtration fields.
**Options for wastewater disposal from the septic tank**
1. If there are well-permeable soils, into drainage (perforated pipes) by gravity with the organization of a filtering layer of sand and granite crushed stone (fr.30-40) under the drainage pipe.
2. In filtration (storage) blocks.
3. In concrete filtering wells without a bottom.
4. In clay soils and quicksand, wastewater is forcibly discharged into bulk filtration fields arranged in the upper (permeable) layers of the soil using a pumping station.
5. Wastewater is discharged from the septic tank into prefabricated Rodlex® filtering wells with a screw cap, which provides the customer with an additional volume of accumulation of treated effluent for effective absorption by the soil.
6. With a large difference in the geodetic height of the outlet pipe from the house from 800 to 2000 mm, a large distance of the sewage system from the house, a sewage pumping station is used to forcibly supply wastewater to the septic tank
In each case, we can find an effective solution for you for installing a septic tank on your site, an optimal placement and disposal of treated effluent. Give recommendations and advice on the choice of system.
Backfill: Sand