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Jet-pipe pre-aeration oxidation ditch sewage treatment system

A sewage treatment system and oxidation ditch technology, applied in water/sewage multi-stage treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc. problem, to achieve the effect of increasing the content of air and oxygen

Inactive Publication Date: 2009-12-02
HAISIBOTE BEIJING SCIENE & TECH
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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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  • Jet-pipe pre-aeration oxidation ditch sewage treatment system

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Embodiment Construction

[0009] see figure 1 , the present invention provides a jet tube pre-aeration oxidation ditch sewage treatment system, comprising a grid 1 connected in sequence, a water collection and sedimentation tank 15 and an oxidation ditch 7, and a text is arranged between the water collection and sedimentation tank and the oxidation ditch The venturi tube 3, the inlet of the taper part of the venturi tube is connected to the upper part of the water collection and sedimentation tank through the high-pressure pump 2, the throat is connected to the atmosphere through the inlet pipe, and the outlet of the diverging part is connected to the bottom of the oxidation ditch.

[0010] The sewage first enters the water collection and sedimentation tank through the grille, and the water collection and primary sedimentation are combined into one, which can simplify the overall structure of the equipment and save investment.

[0011] The grille is provided at the inlet of the water collection and sed...

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Abstract

The invention relates to a jet-pipe 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, a Venturi is arranged between the catchment sedimentation tank and the oxidation ditch; the entrance of a converging part of the Venturi is connected with the upper part of the catchment sedimentation tank via a high-pressure pump; the throat of the Venturi is connected to atmosphere via an intake pipe; the exit of a diverging part of the Venturi is connected with the bottom of the oxidation ditch; the front end of the oxidation ditch is provided with a deep water area; the water in the deep water area is 2-2.5 times deeper than that in other areas of the oxidation ditch; the oxidation ditch is internally 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, therefore, an aerobic zone and an anoxic zone can be transformed in turn, wherein, oxidization and nitration reactions mainly take place in the aerobic zone and hydrolysis and denitrification reactions mainly take place in the anoxic zone. The system features good aeration effect, is provided with the efficiently oxidized deep water area, 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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IPC IPC(8): C02F9/14C02F3/12C02F1/52
CPCY02W10/10
Inventor 陈光亮
Owner HAISIBOTE BEIJING SCIENE & TECH
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