1, first of all, according to the population of the home to determine the size of the septic tank, the most common is the two-compartment, three-compartment septic tank, the material has brick and concrete.
2, three compartments of septic tank foundation should be adjacent to the original building foundation to maintain a certain distance between the value is generally taken not less than the difference in height of the bottom of the adjacent foundation.
3, sprinkle lime line, put the line left brick masonry, and then according to the line digging pit, excavation of the pit, the soil quality of the plot, it is appropriate to use direct excavation, so that the brick masonry close to the wall of the pit; on the soil quality is poor or there is groundwater of the plot, had to be used in accordance with a certain slope slope of the excavation, and leave no less than 150mm backfill width, according to the size of the septic tank wall, then plastering and waterproofing.
In the masonry need to pay attention to, in the case of the same width and depth, the length of the three pools should be 2:1:3
4, the pool cover size and pool body matching, the thickness of the septic tank mainly depends on the location of the ground, usually 5cm, the pool cover at the outer edge of the tank cover can be designed as an internal groove along the mouth.
5, the installation of the septic pipe connection, one or two pools between the length of 65-75cm, inner diameter of 15cm PVC pipe, and the angle of the partition wall to 60 degrees. Two or three pools in addition to the length of 45-55cm, the other two pools with the same. The distance from the outlet of the third pool to the top cover is about 20cm.
6, cover, cover height of about 5cm is appropriate.
7, the ideal outlet for handling manure is to use it for fertilizing farmland, but most farmers use chemical fertilizers instead. If you need to take a manure truck to clean up, it is better to choose a place where it is convenient for the truck to go in and out of the tank, and generally speaking, clean it up once in about 2 years.
Expanded InformationThe role of septic tank
Septic tank is the basic sludge treatment facilities, but also the pre-treatment of domestic sewage facilities, its role is manifested in:
1, to protect the environmental health of the living community, to avoid the proliferation of domestic sewage and pollutants in the living environment.
2, in the septic tank anaerobic corrosion of the working environment, kill mosquitoes and flies.
3, temporary storage of sludge, organic sludge for anaerobic putrefaction, cooked organic sludge can be used as agricultural fertilizer.
4, pre-treatment of domestic sewage (primary treatment), precipitation of impurities, and hydrolysis of macromolecules of organic matter into acids, alcohols and other small molecules of organic matter, to improve the subsequent sewage treatment.
Baidu Encyclopedia: Baidu Encyclopedia: Septic Tank