CN216711848U

CN216711848U - Modular assembly type village and town sewage treatment device

Info

Publication number: CN216711848U
Application number: CN202123229501.1U
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: 2022-06-10
Anticipated expiration: 2031-12-21

Abstract

The utility model discloses a modular 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 filtering and disinfecting tank according to a process flow, wherein different tank bodies are connected by adopting quick connectors; the adjusting tank is provided with a sewage lifting pump for lifting sewage to the biochemical tank; the biochemical tank consists of an anaerobic zone, an anoxic zone and an aerobic zone. The device can realize rapid construction and put into production; the floor area is small, the modular installation is realized, and the floor area is saved; energy conservation, consumption reduction and operation cost reduction; the use of personnel is reduced, and automation is realized.

Description

Modular assembly type village and town sewage treatment device

Technical Field

The utility model belongs to the technical field of sewage treatment, and particularly relates to a modular assembly type village and town sewage treatment device.

Background

With the increasing requirements of people on the environment and the increasing shortage of water resources, the urban sewage is completely and intensively treated, and a good sewage pipeline and a good sewage treatment measure are provided. The treatment and the recycling of rural domestic sewage are urgent, and in remote rural villages, the domestic sewage can be treated only 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 also can be used for supplementing water to river channels. The sewage treatment station has small water treatment amount and small available land area; when a local government decides to build a sewage treatment station, the general condition requires short investment and operation time, which increases great difficulty for building an operator.

The container type integrated sewage treatment equipment used at present is mostly AAO + MBR membrane treatment process. The process flow is that 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 top of an anaerobic tank by a pump, and is finely filtered by the hydraulic grid with the aperture of 1 mm, so that larger suspended matters, silt, hair, fibers and other impurities in the sewage are removed, and the MBR membrane module is prevented from being precipitated and scratched and wound in a subsequent treatment structure. The 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 the 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 the removal of organic matters, the removal of nitrogen and phosphorus and the separation of sludge and water are completed. The effluent of the membrane pool is conveyed to a metering channel by a suction pump and then discharged to a designated river after being metered. The disadvantage of this technique is the long construction period; the energy consumption is high; the human input is large.

SUMMERY OF THE UTILITY MODEL

The utility model provides an FRP (fiber reinforced plastic) modular assembly type village and town sewage treatment device which is specially designed for small-sized village and town sewage treatment. According to the modularized assembly type sewage treatment device, all main components of the modularized assembly type sewage treatment device are modularized, namely, all the components are produced in a modularized mode in a factory, after the components are connected to a project, the components are directly transported to the site, simple sewage pipeline connection is carried out through the quick connectors, and the installation can be completed through circuit butt joint.

The specific technical scheme of the utility model is as follows.

A modular assembly type village and town sewage treatment device sequentially comprises an adjusting tank, a biochemical tank, a sedimentation tank, a sludge tank and a filtering and disinfecting tank according to the process flow, wherein different tank bodies are connected by adopting quick connectors; a sewage lifting pump is arranged in the adjusting tank to lift sewage to the biochemical tank; the biochemical pool is composed of an anaerobic zone, an anoxic zone and an aerobic zone.

The conditioning 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.

Vertical guide plates are arranged in the anaerobic zone and the anoxic zone of the biochemical tank, and the anaerobic zone and the anoxic zone are divided into a plurality of multi-grid areas which are communicated in sequence; the shape of the guide plate is square or elliptical.

The bottom of the aerobic zone of the biochemical tank is provided with a microporous aerator.

The middle part of the sedimentation tank is provided with a guide cylinder for separating mud and water to settle sludge, the bottom of the sedimentation tank is provided with a sludge 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 adding device.

The filter disinfection tank 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 which is of a snap ring structure and connects the end parts of two pipes with each other.

The utility model has the beneficial effects that: the construction period is short, and the sewage treatment station can be put into operation quickly; the occupied area is small, and the modularized components are installed in a centralized manner, so that the occupied area is saved; the investment equipment is less, the operation is simple, and the energy is saved compared with the prior art; the styles and shapes of all modules of the FRP can be optimally designed according to different installation environments and regional characteristics; equipment modularization, wherein standard modules of all process monomers and equipment combinations are produced in a factory, and all the modules can meet the requirement of long-distance transportation; the module standardization, standardized design and full-automatic assembly line production ensure the standardized manufacture of each module and the processing precision, quality and efficiency of each module; the investment of personnel is less, and the operation cost is effectively reduced; the construction is ecological, various civil constructions are greatly reduced in the construction process, the standardized production construction period is short, various environmental pollutions are greatly reduced in the system assembling process, and civilized and ecological construction is realized; standardized assembly: the standardized modules are connected through quick connectors and are connected and disassembled according to each standard module; each module is provided with a lifting lug, so that the lifting is convenient, the movable lifting device is movable and can be used in a turnover way; the use of personnel is reduced, and automation and unattended operation are realized. In addition, by additionally arranging a biological phosphorus removal part, the consumption of phosphorus removal medicine can be reduced; the reasonable combination configuration can be carried out according to different water inlet and outlet quality and water outlet requirements, the stable standard of the system water outlet is ensured, and the system water outlet can adapt to the water quantity fluctuation of the water quantity from-20 percent to +20 percent; the guide plate arranged in the biochemical tank enables sewage to form a good flowing field in the biochemical tank area, thereby saving plug flow stirring equipment in the traditional process and reducing investment cost and operation cost; all sewage treatment processes can be completed by only 1 fan, the problem of irregular maintenance and overhaul of the aeration pipe and the submersible stirring motor which are installed in the pool in the prior art is solved, and the maintenance and overhaul cost is reduced.

The technical solution of the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is a process flow diagram of a container-type integrated sewage treatment plant of the prior art;

FIG. 2 is a process flow diagram of the modular assembly type village and town sewage treatment plant of the present invention;

FIG. 3 is a schematic view of a biochemical pool of the modular assembly type village and town sewage treatment plant of the present invention;

fig. 4 is a schematic sectional view of a biochemical tank of the modular assembled village and town sewage treatment plant of the present invention;

FIG. 5 is a schematic sectional view of a settling tank of the modular assembly type village and town sewage treatment plant of the present invention;

FIG. 6 is a schematic sectional view of a filtering and disinfecting tank of the modular assembled village and town sewage treatment plant of the present invention;

fig. 7 is a schematic view of a quick coupling of the modular assembly type village and town sewage treatment device of the utility model.

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 return pipe, 7 is an aerobic zone return 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 drainage tank, 17 is a water outlet pipe, 18 is a coagulation dosing device, 19 is a sludge discharge pipe, 20 is a gas stripping air pipe, 21 is a movable top cover, 22 is a filtering and disinfecting tank water inlet pipe, 23 is a filtering and disinfecting tank, 24 is a filter, 25 is a sludge return pipe, 26 is a gas stripping air pipe, 27 is a disinfecting and dosing device, 28 is a disinfecting tank water outlet pipe, 29 is a movable top cover, 30 is an inspection well, 31 is a glass steel pipe, and 32 is a snap ring

Detailed Description

The process flow of the modularized assembled village and town sewage treatment device comprises the steps that domestic sewage enters a modular adjusting tank, a sewage lifting pump and a basket grid are arranged in the modular adjusting tank, the sewage is lifted to a modular biochemical tank through the sewage lifting pump, the modular biochemical tank consists of an anaerobic zone, an anoxic zone and an aerobic zone, mixed liquor in the aerobic zone flows back to the anoxic zone through the gas stripping action, and mixed liquor in the anoxic zone flows back to the anaerobic zone through the gas stripping action. Mixed liquid enters a modular sedimentation tank from a modular biochemical tank, the modular sedimentation tank separates mud and water, the separated sludge is sent to a modular sludge tank, the residual sludge flows back to an anaerobic zone under the action of air stripping, supernatant flows through a modular filtering and disinfecting tank for disinfection, and finally the effluent is discharged after reaching the standard.

The structure of the biochemical pool in the modularized assembly type sewage treatment device (see figure 3) of the utility model: the foremost end of the biochemical tank is an anaerobic zone 2, and sewage flows into the anaerobic zone 2, the anoxic zone 3 and the aerobic zone 4 from a water inlet pipe 1 along a guide plate 9 in sequence. Vertical guide plates 9 are arranged in the anaerobic zone 2 and the anoxic zone 3, the anaerobic zone 2 and the anoxic zone 3 are divided into a plurality of multi-grid areas which are communicated in sequence, and sewage flows from the first grid to the last grid through gravity and flows back and forth. The sewage flows into the aerobic zone 4 from the upper part of the last grid of the anoxic zone 3. The arrangement of the guide plate 9 in the biochemical tank enables sewage to form a good flowing field in the biochemical tank area, thereby omitting plug flow stirring equipment in the traditional process and reducing investment cost and operation cost. The anaerobic zone and the anoxic zone of the biochemical pool adopt a bent runner water flow structure, and the flow guide structure divides the flow guide channel into a plurality of multi-grid areas which are sequentially communicated by a plurality of flow plates, so that sewage presents a continuous flow-deflecting state in the flow guide area, the flow of the anaerobic anoxic zone is longest under the same effective volume, the sewage cannot flow in a short time, and the anaerobic zone is in most sufficient contact with sludge. Sewage is deflected up and down from the first grid to the last grid 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 reduce operation and maintenance costs, the sludge discharge and sludge reflux of the biochemical tank adopt an air stripping mode. The sewage forms a good flowing field in the biochemical pool area, thereby saving plug flow stirring equipment in the traditional process and reducing the investment cost and the operation and maintenance cost.

Referring to fig. 4, a microporous 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 sludge reflux or sludge discharge is carried out in an air stripping mode. The sludge in the aerobic zone 4 flows back to the anoxic zone 3 through the return pipe 7, and the sludge in the anoxic zone 3 flows back to the anaerobic zone 2 through the return pipe 6. A carbon source dosing device 12 is arranged at a 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 through the dosing device 12.

Referring to fig. 5, the effluent of the biochemical tank enters a guide shell 15 in the middle of a sedimentation tank 14 through a sedimentation tank inlet pipe 13, then flows from bottom to top, the flow rate of the water flow is gradually slowed down, sludge is settled down, and supernatant flows into a stainless steel drainage tank 16 and is collected and then discharged through a drainage pipe 17. A 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 air stripping reflux, and the precipitated 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 of the sedimentation tank automatically flows into a filtering and sterilizing tank 23 through a water inlet pipe 22 of the filtering and sterilizing tank. A filter 24 is arranged in the filtering and disinfecting tank 23 to clarify and filter water, a movable top cover 29 is arranged at the top of the filter 24, a 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 tank in an air stripping mode. The sewage flows into other areas of the filtering and disinfecting tank 23 after being filtered, and a disinfectant is added into the disinfecting tank 23 through a dosing device 27 to sterilize and disinfect the sewage. The water quality is discharged or recycled through the water outlet pipe 28 after being treated to reach the standard.

Different tank bodies of the FRP modularized assembled village and town sewage treatment equipment are connected by adopting fiber reinforced plastic pipeline quick connectors. The quick connector solves the technical problem that the connection and installation of the traditional glass fiber reinforced plastic pipeline in a flange butt joint mode are long in time consumption. As shown in fig. 7, the quick coupling has a snap ring structure, and two glass fiber reinforced plastic pipes 31 are connected together by a snap ring 32.

Claims

1. A modular assembly type village and town sewage treatment plant is characterized by comprising a regulating tank, a biochemical tank, a sedimentation tank, a sludge tank and a filtering and disinfecting tank in sequence according to a process flow, wherein different tank bodies are connected by adopting quick connectors; the adjusting tank is provided with a sewage lifting pump for lifting sewage to the biochemical tank; the biochemical pool is composed of an anaerobic zone, an anoxic zone and an aerobic zone.

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

3. The device of claim 1, wherein the biochemical pool is provided with a manhole, and the manhole is provided with a carbon source dosing device.

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

5. The apparatus of claim 1, wherein the bottom of the aerobic zone of the biochemical tank is provided with a microporous aerator.

6. The device as claimed in claim 1, wherein a draft tube is arranged in the middle of the sedimentation tank to separate mud from water so as to settle the sludge.

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

8. The device as claimed in claim 1, wherein a filter is arranged in the filtering and disinfecting 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 glass fiber reinforced plastic pipe connector having 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 separated sludge out.