CN116282612A

CN116282612A - Modular assembled village sewage treatment device

Info

Publication number: CN116282612A
Application number: CN202111576077.XA
Authority: CN
Inventors: 曹宁; 商文秀; 王亚东; 王卫; 芦艳平; 果长军; 余正学
Original assignee: Beijing Xincheng Yulu Environmental Protection Technology Co ltd
Current assignee: Beijing Xincheng Yulu Environmental Protection Technology Co ltd
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2023-06-23

Abstract

The invention discloses a modularized assembly type village and town sewage treatment device which sequentially comprises an adjusting tank, a biochemical tank, a sedimentation tank, a sludge tank and a filtration and disinfection tank according to the process flow, wherein different tank bodies are connected by adopting quick connectors; the regulating tank is provided with a sewage lifting pump to lift sewage to the biochemical tank; the biochemical pool consists of an anaerobic zone, an anoxic zone and an aerobic zone. The device can realize quick construction and put into production; the floor area is small, the modular installation is performed, and the floor area is saved; energy saving and consumption reduction, and operation cost reduction; personnel use is reduced, and automation is realized.

Description

Modular assembled village sewage treatment device

Technical Field

The invention belongs to the technical field of sewage treatment, and particularly relates to a modularized assembled village and town sewage treatment device.

Background

With the increasing demands of people on the environment and the increasing shortage of water resources, town sewage is treated in a centralized way, and has good sewage pipelines and sewage treatment measures. The treatment and recycling of rural domestic sewage are urgent, and in remote rural villages, domestic sewage can only be treated in a single village centralized mode. The small-sized domestic sewage treatment station is an effective method for solving rural domestic sewage at the present stage, and the treated sewage can be used for irrigating farmlands and gardens and can also be used for supplementing water to river channels. The sewage treatment station has small water treatment amount and small available land area; when the local government decides to build a sewage treatment station, the general situation requires a short time to put into operation, which adds significant difficulty to the building operator.

The currently used container type integrated sewage treatment equipment is mainly AAO+MBR membrane treatment technology. The process flow is that the water is automatically introduced into a sewage treatment plant through a sewage pipeline, firstly enters a water collecting tank, is lifted to a hydraulic grid positioned at the tank top of an anaerobic tank by a pump, and is subjected to fine filtration through the 1 mm aperture hydraulic grid, so that impurities such as larger suspended matters, sediment, hair, fibers and the like in the sewage are removed, and the sewage is prevented from precipitating and scratching and winding an MBR membrane component in a subsequent treatment structure. Sewage automatically flows to an anaerobic tank through a hydraulic grid, then enters an anoxic tank, an aerobic tank and an MBR membrane tank, and mixed liquid flows back from the membrane tank to the aerobic tank, from the aerobic tank to the anoxic tank and from the anoxic tank to the anaerobic tank in the operation process, so that organic matters, nitrogen and phosphorus removal and mud-water separation are completed. The effluent of the membrane pond is conveyed to a metering channel by a suction pump and is discharged to a designated river after being metered. The disadvantage of this technique is the long construction period; the energy consumption is high; the manpower input is large.

Disclosure of Invention

The invention provides an FRP (fiber reinforced composite) modularized assembled village and town sewage treatment device which is specially designed for small village and town sewage treatment. The invention modularizes all main components of the modularized assembly type sewage treatment device, namely, firstly, modularizes all the components in a factory, after receiving projects, directly transports the components to the site, and carries out simple sewage pipeline connection through a quick connector, thus completing the installation by circuit butt joint.

The specific technical scheme of the invention is as follows.

The modularized assembled village sewage treatment device sequentially comprises an adjusting tank, a biochemical tank, a sedimentation tank, a sludge tank and a filtration and disinfection tank according to the process flow, wherein the different tanks are connected by adopting quick connectors; a sewage lifting pump is arranged in the regulating tank to lift sewage to the biochemical tank; the biochemical pool consists of an anaerobic zone, an anoxic zone and an aerobic zone.

The regulating tank is also provided with a basket grid.

The biochemical pool is provided with an inspection well, and the inspection well is provided with a carbon source dosing device.

The anaerobic zone and the anoxic zone of the biochemical pool are internally provided with vertical guide plates, and the anaerobic zone and the anoxic zone are divided into a plurality of multi-lattice zones which are communicated in sequence; the shape of the guide plate is square or elliptical.

And a microporous aerator is arranged at the bottom of the aerobic zone of the biochemical tank.

The middle part of the sedimentation tank is provided with a guide cylinder for separating mud and water, so that the mud and water are settled, the bottom of the sedimentation tank is provided with a mud discharging pipe which is 54 degrees with the bottom of the sedimentation tank, and the water inlet end of the sedimentation tank is provided with a coagulant dosing device.

The filter sterilizing pond is internally provided with a filter for clarifying and filtering water, and the bottom of the filter is provided with a sludge return pipe.

The quick connector is a glass fiber reinforced plastic pipeline connector, is of a snap ring structure and is used for connecting the end parts of two pipes.

The beneficial effects of the invention are as follows: the construction period is short, and the sewage treatment station can be put into operation quickly; the occupied area is small, the modularized components are installed in a concentrated mode, and the occupied area is saved; the investment of equipment is less, the operation is simple, and the energy is saved compared with the prior art; the model and the shape of each module of the FRP can be optimally designed according to different installation environments and regional characteristics; the equipment is modularized, standard modules of each process monomer and equipment combination are produced in a factory, and all the modules can meet the requirement of long-distance transportation; the module is standardized, standardized design and full-automatic assembly line production are realized, standardized manufacturing of each module is ensured, and processing precision, quality and efficiency of each module are ensured; the investment of personnel is less, and the operation cost is effectively reduced; the construction ecology is realized, various civil construction is greatly reduced in the construction process, the standardized production construction period is short, various environmental pollution is greatly reduced in the system assembly process, and civilized and ecological construction is realized; standardized assembly: the standardized modules are connected through quick connectors, and are connected and detached according to each standard module; each module is provided with a lifting lug, so that the lifting lug is convenient to hoist and move and can be used in a turnover way; the personnel use is reduced, and the automation and unattended operation are realized. In addition, by additionally arranging the biological dephosphorization component, the dephosphorization medicine consumption can be reduced; reasonable combination configuration can be carried out according to different water quality of water inlet and outlet and water outlet requirements, so that stable and standard-reaching water outlet of the system can be ensured, and the water quantity fluctuation of-20% to +20% of water inlet quantity can be adapted; the flow guide plate arranged in the biochemical tank enables sewage to form a good flow field in the biochemical tank area, so that plug flow stirring equipment in the traditional process is omitted, and investment cost and operation cost are reduced; all sewage treatment processes can be completed by only 1 fan, the problems of irregular maintenance and overhaul of an aeration pipe and a submersible stirring motor which are arranged in a pool in the prior art are solved, and the maintenance and overhaul cost is reduced.

The technical scheme of the invention is described in detail below with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is a process flow diagram of a prior art container-type integrated wastewater treatment facility;

FIG. 2 is a process flow diagram of the modular, assembled village and town sewage treatment apparatus of the present invention;

FIG. 3 is a schematic diagram of a biochemical pond of a modular assembled village sewage treatment device of the present invention;

FIG. 4 is a schematic cross-sectional view of a biochemical tank of a modular assembled village sewage treatment device of the present invention;

FIG. 5 is a schematic cross-sectional view of a sedimentation tank of a modular, fabricated village sewage treatment device of the present invention;

FIG. 6 is a schematic cross-sectional view of a filtration and disinfection tank of a modular, fabricated village sewage treatment device of the present invention;

FIG. 7 is a schematic view of a quick connector of a modular, fabricated village sewage treatment device of the present invention.

In the figure: 1 is a water inlet pipe, 2 is an anaerobic zone, 3 is an anoxic zone, 4 is an aerobic zone, 5 is a water outlet pipe, 6 is an anoxic zone backflow pipe, 7 is an aerobic zone backflow pipe, 8 is a gas stripping air pipe, 9 is a guide plate, 10 is a microporous aerator, 11 is an aerobic zone aeration pipe, 12 is a carbon source dosing device, 13 is a sedimentation tank water inlet pipe, 14 is a sedimentation tank, 15 is a guide cylinder, 16 is a water discharge tank, 17 is a water outlet pipe, 18 is a coagulation dosing device, 19 is a mud discharge pipe, 20 is a gas stripping air pipe, 21 is a movable top cover, 22 is a filtration and disinfection tank water inlet pipe, 23 is a filtration and disinfection tank, 24 is a filter, 25 is a sludge backflow pipe, 26 is a gas stripping air pipe, 27 is a disinfection and dosing device, 28 is a disinfection tank water outlet pipe, 29 is a movable top cover, 30 is a steel pipe, 31 is glass, 32 is a snap ring

Detailed Description

The invention relates to a modularized assembled village sewage treatment device, which comprises the technical process that domestic sewage enters a modular regulating tank, a sewage lifting pump and a lifting basket grid are arranged in the modular regulating tank, the sewage is lifted to a modular biochemical tank by the sewage lifting pump, the modular biochemical tank consists of an anaerobic zone, an anoxic zone and an aerobic zone, wherein mixed liquor in the aerobic zone flows back to the anoxic zone through gas stripping, and mixed liquor in the anoxic zone flows back to the anaerobic zone through gas stripping. The mixed liquid enters a modular sedimentation tank from a modular biochemical tank, the mud and water are separated by the modular sedimentation tank, the separated mud is sent into a modular sludge tank, the residual mud flows back to an anaerobic zone through the air stripping effect, the supernatant flows through a modular filtration and disinfection tank for disinfection, and finally the effluent reaches the standard and is discharged.

The structure of the biochemical tank in the modularized assembled sewage treatment device (see figure 3) is as follows: the forefront end of the biochemical pool is an anaerobic zone 2, and sewage flows into the anaerobic zone 2, an anoxic zone 3 and an aerobic zone 4 in sequence along a guide plate 9 from a water inlet pipe 1. The anaerobic zone 2 and the anoxic zone 3 are internally provided with vertical guide plates 9, the anaerobic zone 2 and the anoxic zone 3 are divided into a plurality of multi-lattice areas which are sequentially communicated, and sewage is baffled up and down from a first lattice to a last lattice through gravity flow. The sewage flows into the aerobic zone 4 from the upper part of the last lattice of the anoxic zone 3. The arrangement of the guide plates 9 in the biochemical tank ensures that sewage forms a good flow field in the biochemical tank area, so that the plug flow stirring equipment in the traditional process is omitted, and the investment cost and the running cost are reduced. The anaerobic zone and the anoxic zone of the biochemical pool adopt a bent runner water flow structure, and the flow guiding structure divides the flow guiding channel into a plurality of multi-lattice areas which are communicated in sequence by a plurality of flow plates, so that sewage is in a continuous baffling state in the flow guiding area, the flow of the anaerobic anoxic zone is longest under the same effective volume, sewage cannot flow in short time, and the sewage is in full contact with sludge. The sewage is deflected up and down from the first cell to the last cell by gravity flow. Sewage flows into the aerobic zone from the upper part of the last grid of the anoxic zone. In order to reduce energy consumption and operation and maintenance cost, the sludge discharge and sludge reflux of the biochemical tank are both in a gas stripping mode. The sewage forms a good flow field in the biochemical pool area, so that the plug flow stirring equipment in the traditional process is omitted, and the investment cost and the operation and maintenance cost are reduced.

Referring to fig. 4, a micro-pore aerator 10 is arranged at the bottom of the aerobic zone 4 for aeration. The anoxic zone 3 and the aerobic zone 4 are provided with

sludge reflux devices

6 and 7, and the sludge reflux or the sludge discharge is carried out in a gas stripping mode. The sludge in the aerobic zone 4 flows back to the anoxic zone 3 through a return pipe 7, and the sludge in the anoxic zone 3 flows back to the anaerobic zone 2 through a return pipe 6. A carbon source dosing device 12 is arranged at the first inspection well 30 of the biochemical pool module, and when the carbon source in the water quality of the incoming water is insufficient, the carbon source is supplemented by the dosing device 12.

Referring to fig. 5, effluent from the biochemical tank enters the middle guide cylinder 15 of the sedimentation tank 14 through the sedimentation tank water inlet pipe 13, then flows from bottom to top, the flow speed of water flow is gradually slowed down, sludge is settled down, and supernatant fluid flows into the stainless steel water drainage tank 16 to be collected and then is discharged through the water drainage pipe 17. The coagulant adding device 18 is arranged at the water inlet end of the sedimentation tank, and the sedimentation speed of the sludge is accelerated by adding the coagulant, so that the sludge-water separation effect is improved.

The bottom of the sedimentation tank 14 is provided with a sludge discharge pipe 19, the reflux mode adopts gas stripping reflux, and the settled sludge is continuously conveyed to the anoxic zone 3 and the aerobic zone 4 of the biochemical tank through reflux.

FIG. 6 is a schematic cross-sectional view of a filtration sterilization tank: the effluent from the sedimentation tank automatically flows into the filtration and disinfection tank 23 through the filtration and disinfection tank water inlet pipe 22. The filter 24 is arranged in the filtering and sterilizing pond 23 to clarify and filter water quality, the movable top cover 29 is arranged at the top of the filter 24, the sludge return pipe 25 is arranged at the bottom of the filter, and sludge at the bottom of the filter is returned to the biochemical pond in a gas stripping mode. The sewage flows into other areas of the filtering and sterilizing pond 23 after being filtered, and sterilizing agent is added into the sterilizing pond 23 through a dosing device 27 to sterilize and disinfect the sewage. The water quality is treated to reach the standard and then discharged or recycled through the water outlet pipe 28.

The FRP modular assembled village sewage treatment equipment adopts glass fiber reinforced plastic pipeline quick connectors to connect different tanks. The quick connector solves the technical problem that the traditional glass fiber reinforced plastic pipeline is long in time consumption in connection and installation in a flange butt joint mode. As shown in fig. 7, the quick connector is in a snap ring structure, and two glass reinforced plastic pipes 31 are connected together by a snap ring 32.

Claims

1. The modularized assembled village sewage treatment device is characterized by sequentially comprising an adjusting tank, a biochemical tank, a sedimentation tank, a sludge tank and a filtration and disinfection tank according to the process flow, wherein the different tank bodies are connected by adopting quick connectors; the regulating tank is provided with a sewage lifting pump to lift sewage to the biochemical tank; the biochemical pool consists of an anaerobic zone, an anoxic zone and an aerobic zone.

2. The apparatus of claim 1, wherein the conditioning tank is further equipped with a basket grid.

3. The apparatus of claim 1, wherein the biochemical pond is provided with an inspection well configured with a carbon source dosing device.

4. The device according to claim 1, wherein vertical deflectors are arranged in the anaerobic zone and the anoxic zone of the biochemical tank to divide the anaerobic zone and the anoxic zone into a plurality of multi-lattice zones which are communicated in sequence; the shape of the guide plate is square or elliptical.

5. The device according to claim 1, wherein a microporous aerator is arranged at the bottom of the aerobic zone of the biochemical tank.

6. The device according to claim 1, wherein a guide cylinder is arranged in the middle of the sedimentation tank to separate mud from water and enable the mud to settle.

7. The device of claim 1, wherein the bottom of the sedimentation tank is provided with a mud discharge pipe which is 54 degrees with the bottom of the sedimentation tank, and the water inlet end of the sedimentation tank is provided with a coagulant dosing device.

8. The device according to claim 1, wherein a filter is arranged in the filtering and sterilizing tank for clarifying and filtering water, and a sludge return pipe is arranged at the bottom of the filter.

9. The apparatus of claim 1, wherein the quick connector is a fiber reinforced plastic pipe connector in a snap ring configuration that connects the ends of two pipes to each other.

10. The apparatus of claim 1, wherein the sludge basin is tapered to carry the separated sludge outward.