The quality of buried sewage treatment equipment in rural area is guaranteed

Process characteristics of integrated underground sewage treatment equipment

(1) it can efficiently separate the solid and liquid, separating the suspended substances, colloidal substances and microbial flora lost by biological units from the purified water.The separation process is simple, covers a small area, and the effluent quality is good.

(2) the biomass in the biological treatment unit can be maintained at a high concentration, the volume load can be greatly increased, the efficiency of membrane separation can be greatly reduced, the hydraulic retention time of the treatment unit can be greatly shortened, and the floor area of the bioreactor can be correspondingly reduced.

(3) because it can prevent the loss of various microbial flora, it is conducive to the growth of slow-growing bacteria (nitrifying bacteria, etc.), so as to make various metabolic processes in the system proceed smoothly.

(4) the residence time of some refractory organic compounds will be longer, which is conducive to their decomposition.

[5] membrane treatment technology is the same as other filtration and separation technologies. In the long-term operation process, the membrane is blocked as a filter medium, and the membrane gradually decreases through the running time of water volume. Effective backwashing and chemical cleaning can slow down the decline of membrane flux and maintain the effective service life of the sewage treatment system.

(6) sewage treatment technology is applied in urban sewage treatment. Due to its simple process and convenient operation, automatic operation management can be realized.

Principle of underground sewage treatment and anaerobic biological filter

1. Filtration effect: the filler intercepts and filters large particles and suspended solids in the water

2. Hydrolysis: anaerobic microorganisms can hydrolyze insoluble substances of large molecules into soluble substances of small molecules

3. Absorption: part of the organic pollutants in the water are absorbed and absorbed by anaerobic microorganisms, which are used for their own growth and reproduction. Part of the organic pollutants are sealed out by u-shaped water in the form of methane gas

4. Denitrification: the denitrifying bacteria in the anaerobic microorganisms in the anaerobic filter can use the nitrate nitrogen in the backflow water and convert it into nitrogen to remove nitrogen from the sewage.The concentration of suspended solids, organic pollutants and nitrogen was reduced after the treatment of rural sewage by anaerobic filter.