Raw water → grille → conditioning tank → contact oxidation tank → sedimentation ground → filtration → disinfection → water.
1. Activated sludge water treatment method
(1) Blast aeration: that is, aeration aeration, which continuously compresses compressed air into the wastewater to ensure that there is a certain amount of dissolved oxygen in the water to maintain the life activity of microorganisms and decompose organic matter in the water to achieve purification of water treatment effect.
(2) Mechanical aeration: Surface aeration. The mechanical impeller installed in the aeration tank rotates to agitate the water surface violently, so that the oxygen in the air is dissolved in the water, which is used for the life activity of microorganisms. effect.
(3) Pure oxygen aeration: It is to blow pure oxygen into the water according to the blast aeration method to improve the oxygenation efficiency and thereby speed up the purification rate of water treatment.
2, Biofilm water treatment method
(1) Biological filter: The wastewater is passed through the biofilm growing on the surface of the filter material, and the organic matter in the wastewater is degraded through the material exchange and biochemical action between the two sides to achieve the purpose of water treatment purification.
(2) Biological turntable: It consists of several closely-spaced disks fixed on a horizontal axis. A layer of biofilm is grown on the surface of the rotating disk to achieve the effect of water treatment purification.
3 (3) Biological contact oxidation: all the fillers for microorganisms are immersed in the wastewater, and mechanical equipment is used to fill the wastewater with air to degrade organic matter in the wastewater to purify the wastewater.
3. Land treatment system (1) Land infiltration: Use the purification ability of microorganisms and plant roots in soil membranes to treat domestic sewage, and use water and fertilizer in sewage to promote the growth of crops, forages and trees.
(2) Sewage irrigation: The main purpose of this water treatment method is irrigation, so as to make full use of the purified sewage.
4. Anaerobic biological water treatment method: using anaerobic microorganisms to decompose organic matter in sewage to achieve the purpose of water treatment and purification, and simultaneously generate methane, CO2 and other gases
