Efficient town sewage treatment and recycling device and process

Abstract

The invention discloses an efficient town sewage treatment and recycling device and process. The efficient town sewage treatment and recycling device comprises a device body and a remote environmental medicine expert diagnosis and control system, wherein the device body comprises three modules of a biochemical reaction module, a mud-water separation module and an equipment integration module; tank bodies of the biochemical reaction module and the mud-water separation module are communicated through partition water holes or overflow weir water holes; a water outlet pipe of a sedimentation tank is connected with an ultraviolet sterilizer in the equipment integration module; the biochemical reaction module comprises a pre-deoxidating mud film tank, a phosphorus-releasing mud film tank, a denitrifying phosphorus-accumulating mud film tank and an aerobiotic mud film tank which are communicated in sequence; a set of intermittent gas disturbance equipment is arranged at the bottom of the denitrifying phosphorus-accumulating mud film tank. According to the efficient town sewage treatment and recycling device and process, the short-flow phenomenon in the tanks is overcome, the microbial community structure distribution of the tanks is optimized, the function of the sedimentation tank is enhanced, the total nitrogen and total phosphorus treatment efficiency is higher, the gas-stripping energy consumption is low, the structure is compact, the occupied area is small, and the sludge floating phenomenon and the effluent suspended matter content can be significantly reduced.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to a high-efficiency village and town sewage treatment and reuse device and its technology. Background technique [0002] At present, the pollution of water environment and ecological environment in my country is becoming more and more prominent. Most of the domestic sewage in rural areas and other places is discharged directly without treatment, and most of them are directly discharged into natural water bodies, causing serious pollution to surrounding water bodies and soil. However, rural domestic sewage in my country has the characteristics of scattered distribution, complex terrain, imperfect pipe network coverage, and unstable water volume, so it is not suitable for large-scale centralized sewage treatment plants for treatment. Existing integrated sewage treatment devices mainly include activated sludge method, biofilm method and membrane biological method devices. ...

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Problems solved by technology

[0003] At present, the existing integrated device still has the following problems: 1. The existing air-lifting sludge return system is a pulse-type effluent, and the effluent carries high dissolved oxygen and it is difficult to control the amount of air-lifting reflux sludge water, which is very unfavorable to anaerobic reaction and difficult. Precise control; 2. Existing equipment has uneven water distribution, stagnant water areas, serious short-flow problems and unreasonable process settings, which is not conducive to achieving the purpose of efficient nitrogen and phosphorus removal; 3. Anaerobic pools and anoxic pools of existing equipment There is a lot of sludge at the bottom, and it is difficult to fluidize the sludge so that it is difficult to achieve efficient nitrogen and phosphorus removal reactions; 4. The existing integrated sewage treatment equipment sedimentation tank is unreasonable due to unreasonable equipment, and there is no control of floating sludge and effluent suspended matter exceeding the standard Technical measures lead to poor water discharge effect of the sedimentation tank; 5. The existing integrated device cannot adjust the corresponding operating conditions for changes in water quality, water volume, temperature and other environments, and there are many problems in unmanned and intelligent operation management

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