CN217351105U

CN217351105U - Improved ultrafiltration concentrated water reflux system of thermal power plant

Info

Publication number: CN217351105U
Application number: CN202221241360.7U
Authority: CN
Inventors: 陈勇; 杨钰莹
Original assignee: Guangzhou Huantou Zengcheng Environmental Protection Energy Co ltd
Current assignee: Guangzhou Huantou Zengcheng Environmental Protection Energy Co ltd
Priority date: 2022-05-23
Filing date: 2022-05-23
Publication date: 2022-09-02
Anticipated expiration: 2032-05-23

Abstract

The utility model discloses an improved ultrafiltration concentrated water reflux system of a thermal power plant, which comprises a first ultrafiltration concentrated water pipe communicated with a first ultrafiltration subsystem and a MBR two-stage biochemical integrated tank and a second ultrafiltration concentrated water pipe communicated with a second ultrafiltration subsystem and a MBR two-stage biochemical integrated tank; a communicating pipe is fixedly arranged between the first ultrafiltration concentrated water pipe and the second ultrafiltration concentrated water pipe, a communicating valve is fixedly arranged on the communicating pipe, and a first isolating valve and a second isolating valve are respectively arranged on the first ultrafiltration concentrated water pipe and the second ultrafiltration concentrated water pipe. The utility model discloses can handle the biochemical water demand that synthesizes in the pond a set of and two groups of MBR two-stage simultaneously when only a set of ultrafiltration subsystem operation, need not the artifical switching pipeline of outage ultrafiltration system to simplify the operation, guarantee the operation of system safety and stability.

Description

Improved ultrafiltration concentrated water reflux system of thermal power plant

Technical Field

The utility model belongs to thermal power plant equipment field especially relates to a concentrated water reflux system of modified thermal power plant's ultrafiltration.

Background

Generally speaking, the waste incineration treatment scale of the thermal power plant is 2000t/d, 3 grate waste incinerators with 750t/d are adopted, 2 steam turbine generator sets with 25MW power generation installed capacity are adopted, and the designed treatment capacity of a waste leachate treatment system is 600m ³ D (leachate 460 m) ³ D + low concentration 140m ³ And d), the main process of the percolate treatment is 'adjusting tank pretreatment + anaerobic (UASB) system + external MBR (two-stage AO biochemical) + NF + RO'. Because the ultrafiltration system of the conventional thermal power plant respectively flows back to the group A and the group B of an MBR (two-stage AO biochemical) comprehensive pool through two ultrafiltration concentrated water return pipes of two groups of ultrafiltration subsystems, when the ultrafiltration system fails or one group of ultrafiltration subsystems is subjected to membrane passing cleaning, so that only one group of ultrafiltration subsystems operates, in order to ensure the normal operation of the MBR (two-stage AO biochemical) comprehensive pool, the ultrafiltration system must be frequently stopped, and the water inlet of the ultrafiltration system is manually switched in turn as required, so that one group and two groups of water outlet of the MBR comprehensive pool can be sequentially treated, and the high efficiency and the stable operation of the system are frequently influenced. Therefore, the design of the ultrafiltration concentrated water reflux system of the thermal power plant, which is convenient to control and technically improved and has low cost, becomes the research direction.

SUMMERY OF THE UTILITY MODEL

In order to solve the not enough of prior art existence, the utility model provides a concentrated water reflux system of modified heating power plant ultrafiltration utilizes the UNICOM valve, the laying of closing valve and UNICOM's pipeline, even reach when only a set of ultrafiltration subsystem moves, also can be through the UNICOM valve and closing valve on the concentrated water reflux pipe of adjustment ultrafiltration, the simultaneous processing MBR synthesizes a set of and two play water demands of pond, need not to stop to transport ultrafiltration system, and switch over the ultrafiltration intake, simplify the operation, thereby recovery system safety and stability moves.

In order to achieve the above object, the utility model discloses an embodiment's a modified thermal power plant ultrafiltration dense water reflux system, it includes first ultrafiltration dense water pipe, second ultrafiltration dense water pipe, closed tube, first block valve, second block valve and closed valve.

The first end of the first ultrafiltration concentrated water pipe is communicated with a first ultrafiltration subsystem, and the second end of the first ultrafiltration concentrated water pipe is communicated with a group of MBR two-stage biochemical integrated tanks; the first ultrafiltration concentrated water pipe is provided with a first three-way pipe fitting, the first end and the second end of the first three-way pipe fitting are respectively communicated with the first ultrafiltration concentrated water pipe, and the third end of the first three-way pipe fitting is communicated with the first end of the communicating pipe.

The first end of the second ultrafiltration concentrated water pipe is communicated with the second ultrafiltration subsystem, and the second end of the second ultrafiltration concentrated water pipe is communicated with the second MBR two-stage biochemical integrated tank group; and a second tee pipe fitting is arranged on the second ultrafiltration concentrated water pipe, the first end and the second end of the second tee pipe fitting are respectively communicated with the second ultrafiltration concentrated water pipe, and the third end of the second tee pipe fitting is communicated with the second end of the communicating pipe.

The communication pipe is provided with a communication valve, the first ultrafiltration concentrated water pipe between the first three-way pipe fitting and the MBR two-stage biochemical comprehensive tank group is provided with a first isolating valve, and the second ultrafiltration concentrated water pipe between the second three-way pipe fitting and the MBR two-stage biochemical comprehensive tank group is provided with a second isolating valve.

Further, the first isolating valve, the second isolating valve and the communicating valve are butterfly valves.

Furthermore, the first isolating valve, the second isolating valve and the communicating valve are all made of UPVC materials.

Further, the first isolating valve, the second isolating valve and the communicating valve are all DN200 pipe diameters.

The utility model has the advantages that:

the utility model discloses add the UNICOM's pipeline between first ultrafiltration dense water pipe and second ultrafiltration dense water pipe to even reach only when a set of ultrafiltration subsystem moves through laying its upper communication valve and closing valve, also can be through the closing valve on the communication valve on the adjustment UNICOM's pipeline and the ultrafiltration dense water back flow, handle the water demand of MBR comprehensive pool a set of and two groups in a flexible way, need not to stop to transport ultrafiltration system, also need not to carry out frequent manual switch to the ultrafiltration inlet channel, simplify the operation, thereby recovery system safety and stability moves.

Drawings

Fig. 1 is a schematic structural diagram of an improved ultrafiltration concentrated water reflux system of a thermal power plant.

In the figure:

the system comprises a first ultrafiltration subsystem 1, a second ultrafiltration subsystem 2, a first ultrafiltration concentrated water pipe 3, a second ultrafiltration concentrated water pipe 4, a communicating pipe 5, a first isolating valve 6, a second isolating valve 7, a communicating valve 8, a MBR two-stage biochemical comprehensive pool group 9, an MBR two-stage biochemical comprehensive pool group 10, a first three-way pipe fitting 11 and a second three-way pipe fitting 12.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clear, the following description is further made with reference to the accompanying drawings and examples.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

As shown in the attached drawing 1, the utility model provides an improved thermal power plant's ultrafiltration dense water reflux system, it includes first ultrafiltration dense water pipe 3, second ultrafiltration dense water pipe 4, closed tube 5, first block valve 6, second block valve 7 and closed valve 8.

The first end of the first ultrafiltration concentrated water pipe 3 is communicated with the first ultrafiltration subsystem 1, and the second end of the first ultrafiltration concentrated water pipe 3 is communicated with a group 9 of MBR two-stage biochemical integrated tanks; the first ultrafiltration concentrated water pipe 3 is provided with a first three-way pipe fitting 11, the first end and the second end of the first three-way pipe fitting 11 are respectively communicated with the first ultrafiltration concentrated water pipe 3, and the third end of the first three-way pipe fitting 11 is communicated with the first end of the communicating pipe 5.

A first end of the second ultrafiltration concentrated water pipe 4 is communicated with the second ultrafiltration subsystem 2, and a second end of the second ultrafiltration concentrated water pipe 4 is communicated with the MBR two-stage biochemical integrated tank group 10; a second three-way pipe fitting 12 is arranged on the second ultrafiltration concentrated water pipe 4, a first end and a second end of the second three-way pipe fitting 12 are respectively communicated with the second ultrafiltration concentrated water pipe 4, and a third end of the second three-way pipe fitting 12 is communicated with a second end of the communicating pipe 5.

The communicating pipe 5 is provided with a communicating valve 8, a first closing valve 6 is arranged on the first ultrafiltration concentrated water pipe 3 between the first three-way pipe fitting 11 and the MBR two-stage biochemical comprehensive pool group 9, and a second closing valve 7 is arranged on the second ultrafiltration concentrated water pipe 4 between the second three-way pipe fitting 12 and the MBR two-stage biochemical comprehensive pool group 10.

Further, the first closing valve 6, the second closing valve 7 and the communication valve 8 are all butterfly valves.

Furthermore, the first closing valve 6, the second closing valve 7 and the communication valve 8 are all made of UPVC material.

Further, the first closing valve 6, the second closing valve 7 and the communication valve 8 are all DN200 pipe diameters.

In practical use, when the system normally operates, the communication valve 8 on the communication pipe 5 is in a closed state, the ultra-filtration concentrated water reflux system of the thermal power plant simultaneously and respectively reflows to the MBR two-stage biochemical comprehensive tank group 9 and the MBR two-stage biochemical comprehensive tank group 10 through the respective ultra-filtration concentrated water reflux pipes of the first ultra-filtration subsystem 1 and the second ultra-filtration subsystem 2, when the ultra-filtration system fails or needs to carry out membrane cleaning on one group of the ultra-filtration subsystems, so that only one group of the ultra-filtration subsystems operates, for example, the first ultra-filtration subsystem 1 fails, and the second ultra-filtration subsystem 2 operates, the communication valve 8 on the communication pipe 5 is opened, the first isolating valve 6 and the second isolating valve 7 are simultaneously adjusted to control the concentrated water flow of the first ultra-filtration concentrated water pipe 3 and the second ultra-filtration concentrated water pipe 4, so as to ensure the normal operation of the MBR two-stage biochemical comprehensive tanks, the ultra-filtration system does not need to be stopped, and the ultra-filtration water inlet pipe does not need to be frequently switched manually, the operation is simplified, and therefore the safe and stable operation of the system is restored.

The utility model discloses the standard part that uses all can purchase from the market, dysmorphism piece all can be customized according to the description with the record of attached drawing, the concrete connected mode of each part all adopts conventional means such as ripe bolt, rivet, welding among the prior art, machinery, part and equipment all adopt among the prior art, conventional model, including circuit connection adopts conventional connected mode among the prior art, and the details are not repeated here, and the content that does not make detailed description in this description belongs to the prior art that expert technical personnel know in this field.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.

Claims

1. An improved ultra-filtration concentrated water reflux system of a thermal power plant is characterized by comprising a first ultra-filtration concentrated water pipe, a second ultra-filtration concentrated water pipe, a communicating pipe, a first isolating valve, a second isolating valve and a communicating valve;

the first end of the first ultrafiltration concentrated water pipe is communicated with a first ultrafiltration subsystem, and the second end of the first ultrafiltration concentrated water pipe is communicated with a group of MBR two-stage biochemical integrated tanks; a first tee pipe fitting is arranged on the first ultrafiltration concentrated water pipe, the first end and the second end of the first tee pipe fitting are respectively communicated with the first ultrafiltration concentrated water pipe, and the third end of the first tee pipe fitting is communicated with the first end of the communicating pipe;

the first end of the second ultrafiltration concentrated water pipe is communicated with the second ultrafiltration subsystem, and the second end of the second ultrafiltration concentrated water pipe is communicated with the second MBR two-stage biochemical integrated tank group; a second tee pipe fitting is arranged on the second ultrafiltration concentrated water pipe, the first end and the second end of the second tee pipe fitting are respectively communicated with the second ultrafiltration concentrated water pipe, and the third end of the second tee pipe fitting is communicated with the second end of the communicating pipe;

the communication pipe is provided with the communication valve, the first ultrafiltration concentrated water pipe between the first three-way pipe fitting and the MBR two-stage biochemical comprehensive tank group is provided with a first isolating valve, and the second ultrafiltration concentrated water pipe between the second three-way pipe fitting and the MBR two-stage biochemical comprehensive tank group is provided with a second isolating valve.

2. The improved thermal power plant ultrafiltration concentrate recirculation system of claim 1, wherein the first block valve, the second block valve, and the communication valve are butterfly valves.

3. The improved thermal power plant ultrafiltration concentrate recirculation system of claim 1, wherein the first block valve, the second block valve, and the communication valve are all UPVC.

4. The improved thermal power plant ultrafiltration concentrate recirculation system of claim 1, wherein the first block valve, the second block valve, and the communication valve are all DN200 pipe diameters.