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Elevated overflow tank pre-aeration oxidation ditch sewage treatment system

A sewage treatment system and overflow tank technology, which is applied in water/sewage multi-stage treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of low sewage concentration and unsuitable for higher concentration sewage purification and other problems, to achieve the effect of eliminating sediment, reducing floating sludge and odor, and improving purification effect

Inactive Publication Date: 2009-12-02
HAISIBOTE BEIJING SCIENE & TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

However, the sewage concentration suitable for the oxidation ditch is relatively low, and it is not suitable for the purification of high concentration sewage

Method used

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  • Elevated overflow tank pre-aeration oxidation ditch sewage treatment system
  • Elevated overflow tank pre-aeration oxidation ditch sewage treatment system

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Embodiment Construction

[0010] see figure 1 , the present invention provides an oxidation ditch sewage treatment system with pre-aeration of a high-level overflow tank, comprising a grid 1, a water collection sedimentation tank 2 and an oxidation ditch 6 connected in sequence, and the water inlet end of the oxidation ditch is provided with a high-level The overflow tank 5, the outlet water of the water collection and sedimentation tank is pumped into the high-level overflow tank through the sewage pump 4 on the water outlet pipeline 3, and the overflow port of the high-level overflow tank is located at the water inlet of the artificial wetland above the constructed wetland water surface, the overflow weir is a horizontal weir whose extension width is less than or equal to the width of the constructed wetland water inlet end located below it.

[0011] The sewage first enters the water collection and sedimentation tank through the grille, and the water collection and primary sedimentation are combined ...

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Abstract

The invention relates to an elevated overflow tank pre-aeration oxidation ditch sewage treatment system, comprising a bar screen, a catchment sedimentation tank and an oxidation ditch, which are connected in turn; wherein, an inlet and outlet end of the oxidation ditch is provided with the elevated overflow tank; the water flowing out of the catchment sedimentation tank is pumped into the elevated overflow tank by a sewage pump; an overflow mouth of the elevated overflow tank is positioned above a water inlet of a constructed wetland; the elevated overflow tank is over 500mm higher than the water surface of the constructed wetland; an overflow weir of the elevated overflow tank is a horizontal weir with extension width less than or equal to the width of the water inlet of the constructed wetland below the weir; the oxidation ditch is provided with a plurality of parallel baffle plates which divide space in the ditch into a plurality of parallel ditches connected end to end; a plurality of aeration rotary brushes are arranged at intervals in the parallel ditches connected end to end; oxidization and nitration reactions mainly take place in an aerobic zone and hydrolysis and denitrification reactions mainly take place in an anoxic zone. The system features good aeration effect, can eliminate organic pollution, has certain functions of denitrification and dephosphorization and is mainly applicable to treating domestic sewage and other similar organic sewages.

Description

technical field [0001] The invention relates to a sewage treatment system, in particular to an oxidation ditch-based sewage treatment system to achieve a higher degree of purification and descaling and denitrification to a certain degree, and belongs to the field of environmental protection. Background technique [0002] Since 1804, the British first used sedimentation and filtration technology as a centralized water treatment plant. In 1884, the Americans invented the coagulation, sedimentation, filtration, and chlorine disinfection technology, which has been used for 120 years. There are new discoveries and improvements in treatment, but the treatment process of domestic water basically remains the same, essentially no update and breakthrough. However, the water source to be treated has undergone great changes: the water source a hundred years ago was not polluted due to the underdevelopment of industry and agriculture. Over the past few decades, the development of modern...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F3/12C02F3/32
CPCY02W10/10
Inventor 陈光亮
Owner HAISIBOTE BEIJING SCIENE & TECH
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