A multi-cycle self-reflux small domestic sewage treatment system with denitrification function

A domestic sewage and treatment system technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, sustainable biological treatment, etc., can solve uneven water flow, pump selection and matching problems, and weir design without consideration and other issues, to achieve the effects of saving construction costs and maintenance costs, high energy utilization efficiency, and small and simple facilities

A domestic sewage and treatment system technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, sustainable biological treatment, etc., can solve uneven water flow, pump selection and matching problems, and weir design without consideration and other issues, to achieve the effects of saving construction costs and maintenance costs, high energy utilization efficiency, and small and simple facilities

CN105417853BInactive Publication Date: 2017-12-29CHINA ACAD OF TRANSPORTATION SCI +1
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  • A multi-cycle self-reflux small domestic sewage treatment system with denitrification function
  • A multi-cycle self-reflux small domestic sewage treatment system with denitrification function
  • A multi-cycle self-reflux small domestic sewage treatment system with denitrification function

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] see figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 7 As shown, a multi-circulation self-reflux small-scale domestic sewage treatment system with denitrification function in the preferred first embodiment of the present invention is composed of three parts: water volume adjustment area 1, biochemical treatment area 2 and precipitation area 3. The described The biochemical treatment zone 2 is an aerobic biochemical reaction zone, while the water volume regulation zone 1 is an anoxic zone, and the sewage is circulated multiple times in the two zones to achieve a very high denitrification effect. in,

[0056] The water volume adjustment area 1 is provided with a lifting pump 1-1, a grid 1-2, a backflow device 1-3 and a water inlet 1-4, and the water inlet 1-4 is arranged in a part of the water volume adjustment area 1. On the upper part of the side pool wall, the grid 1-2 is arranged at the water inlet 1-4, and the return device 1-3 is arranged on t...

Embodiment 2

[0062] see figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, a multi-circulation self-reflux small-scale domestic sewage treatment system with denitrification function according to the preferred second embodiment of the present invention is composed of four parts: water volume adjustment area 1, biochemical treatment area 2, precipitation area 3 and equipment area. in:

[0063] Wherein the weir top of the outlet weir 2-2 is at the same height as the top of the backflow weir 2-3, and the weir bottom of the outlet weir 2-2 is higher than the bottom of the backflow weir 2-3, by adjusting the top of the outlet weir 2-2 The height difference between the bottom of the weir mouth and the bottom of the backflow weir mouth 2-3 can adjust the return flow rate and the sewage treatment time, so that the water flow can be discharged after being processed through multiple cycles, so as to realize efficient sewage treatment.

[0064] refer to ...

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Abstract

The invention discloses a multi-cycle self-backflow small living sewage treatment system with a denitrification function. The system is composed of a water yield adjusting area, a biochemical treatment area and a settling area. A lifting pump is arranged in the water yield adjusting area to lift sewage to be treated to one end of the biochemical treatment area. An aerating apparatus and biochemical reaction filler are installed in the biochemical treatment area. A backflow device is arranged on the pond wall between the other end of the biochemical treatment area and the water yield adjusting area, and after the backflow device is started, sewage subjected to a biochemical reaction can flow back into the water yield adjusting area. An effluent weir is arranged on the pond wall between the other end of the biochemical treatment area and the settling area. A sufficient circular reaction of sewage can be achieved due to the design of the height difference of the bottom of the crest of the effluent weir and the bottom of the crest of a backflow weir, the pollution load impact is the smallest, and the sewage treatment efficiency is highest. The system is applicable to small-yield sewage treatment, and particularly suitable for non-uniform inflowing sewage treatment conditions with the denitrification requirement. Impact of the instantaneous water inflowing pollution load on the system is small, the ammonium-nitrogen removal rate is high, and the sewage treatment efficiency is high.

Description

technical field [0001] The invention relates to a small-scale domestic sewage treatment system, in particular to a multi-cycle self-reflux small-scale domestic sewage treatment system with denitrification function. Background technique [0002] Most of the existing small-scale sewage treatment systems cannot realize the treatment of aerobic and hypoxic two links, or only use two links for treatment but cannot be recycled. For example, the patent application number CN201510151759 proposes a Small and medium-sized sewage treatment integrated device, including sequentially connected biochemical treatment unit, sedimentation and sludge return unit, photocatalytic oxidation unit, advanced treatment unit, and disinfection unit; patent application number CN201520071877 proposes a small sewage treatment device , including comprehensive adjustment tank, contact oxidation tank, biological aerated filter tank, filter tank and automatic control module; patent application number CN201420...

Claims

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Application Information

Patent Timeline
29 Dec 2017
Publication
CN105417853B
IPC
C02F9/14; C02F3/28; C02F3/02
CPC
Y02W10/10
Inventors
简丽; 陈学平