CN211470879U - TMF sewage treatment system - Google Patents

Abstract

The utility model discloses a TMF sewage treatment system, which can thoroughly remove deposited particles in a pickling and alkali washing mode by adding a chemical cleaning chemical box, thereby ensuring the filtering capacity; in addition, a pneumatic pump is used as the conveying power of the medicament, so that on one hand, conveying of cleaning liquid medicine can be carried out, on the other hand, air washing can be carried out on the TMF membrane filter, the whole pipeline structure can be simplified, in addition, a pipeline between a water source and the TMF membrane filter is increased, water can be directly introduced into the filter, and therefore acid washing is carried out firstly in the chemical cleaning process, acid liquor is removed through water washing, and finally gaps are carried out, so that toxic and harmful gases generated in a pipeline can be effectively avoided, and the safety of chemical cleaning is ensured; in addition, the starting of the pneumatic pump can be reduced, and the energy consumption is reduced.

Description

TMF sewage treatment system

Technical Field

The utility model relates to a sewage treatment field, especially TMF sewage treatment system.

Background

The core technology of a tubular microfiltration membrane (TMF) system is a microfiltration membrane, which is combined with a micro-flocculation technology, mainly utilizes the structure of the system, and is pumped into the membrane through a booster pump, and suspended particles, colloids, organic macromolecules, bacteria, microorganisms and the like in raw water can be separated by utilizing the aperture (0.1-1.0 micron) in the membrane, so that the purpose of separating pollutants from clean water in water is achieved, and the system is physical separation.

As the filtration time increases, particles are trapped in the membrane surface or pores, and in order to maintain a certain flow rate, the driving pressure must be increased, and when the pressure is increased to a certain value, the trapped layer on the membrane must be backwashed to restore the capacity of the filter membrane.

Usually, the mode of water washing and gas washing is adopted, but after the system is used for a long time, part of pollutants and particles are firmly adsorbed by the filter membrane and cannot be removed through the water washing and the gas washing, so that the filtering efficiency and the filtering capacity of the tubular microfiltration membrane system are influenced to a certain extent.

Meanwhile, when air exists in the tubular microfiltration membrane, the existing tubular microfiltration membrane system can be discharged through an installed exhaust structure (a check valve and a hose) during operation, but liquid is continuously discharged from an exhaust port during subsequent operation, so that the operation efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a TMF sewage treatment system for solving the above-mentioned problem that exists among the prior art.

The purpose of the utility model is realized through the following technical scheme:

the TMF sewage treatment system comprises at least one TMF membrane filter, wherein a liquid inlet end pipe of the TMF membrane filter is connected with a concentration liquid tank through a liquid inlet pipeline and is connected with a water source through a first water supply pipeline, the water source is connected with a chemical cleaning medicine box through a second water supply pipeline, and the chemical cleaning medicine box is connected with a liquid inlet end of the TMF membrane filter through a medicine supply pipeline; the pneumatic pump on the medicine supply pipeline is connected with an air source through an air supply pipeline, the concentrated solution outlet of the TMF membrane filter is connected with a concentrated solution tank through a first water outlet pipeline, and the clear solution outlet of the TMF membrane filter is connected with a filtering water tank through a second water outlet pipeline; and the exhaust port of the TMF membrane filter is connected with a trench through an exhaust pipeline.

Preferably, in the TMF sewage treatment system, the chemical cleaning chemical tank includes two chemical tanks, and the two chemical tanks are respectively connected to the two branches of the second water supply pipeline and the two chemical supply branches of the chemical supply pipeline.

Preferably, in the TMF sewage treatment system, the first water outlet pipeline and the second water outlet pipeline are respectively connected to the chemical cleaning chemical tank and the trench through a backflow branch.

Preferably, in the TMF sewage treatment system, the second water outlet pipeline includes a water storage pipe, and a liquid outlet end of the water storage pipe is connected to a pipeline connected to the filtering water tank and the air supply pipeline.

Preferably, in the TMF sewage treatment system, the exhaust pipeline comprises an automatic exhaust valve disposed on a pipeline.

Preferably, in the TMF sewage treatment system, the shell of the automatic exhaust valve is an engineering plastic shell, and the pipeline of the exhaust pipeline is an engineering plastic pipe.

The utility model discloses technical scheme's advantage mainly embodies:

the scheme has the advantages of ingenious design and simple structure, and can thoroughly remove deposited particles in an acid washing and alkali washing mode by adding a chemical cleaning chemical box, thereby ensuring the filtering capacity; in addition, a pneumatic pump is used as the conveying power of the medicament, so that on one hand, conveying of cleaning liquid medicine can be carried out, on the other hand, air washing can be carried out on the TMF membrane filter, the whole pipeline structure can be simplified, in addition, a pipeline between a water source and the TMF membrane filter is increased, water can be directly introduced into the filter, and therefore acid washing is carried out firstly in the chemical cleaning process, acid liquor is removed through water washing, and finally gaps are carried out, so that toxic and harmful gases generated in a pipeline can be effectively avoided, and the safety of chemical cleaning is ensured; in addition, the starting of the pneumatic pump can be reduced, and the energy consumption is reduced.

A plurality of TMF membrane filters of this scheme can the public part pipeline, and whole pipeline reasonable in design, and the pipeline structure is simplified greatly than prior art, is favorable to reducing equipment cost.

The tap water pipeline between the water source and the TMF membrane filter is increased, so that the chemical cleaning time can be effectively saved, and the water quantity for circularly cleaning the tubular microfiltration membrane can be saved.

This scheme replaces the check valve and the hose that prior art gathered with air relief valve to install on the blast pipe of membrane export. Only exhaust and no water are ensured on the exhaust pipeline.

The automatic exhaust valve and all parts of the scheme are made of engineering plastics, so that the automatic exhaust valve has strong corrosion resistance and chemical corrosion resistance; the maintenance frequency is low, and the service life is long. The valve body adopts a direct flow passage design, and the air inlet valve has large size and large flow. The automatic exhaust valve accords with the integral floating ball anti-blowing design of gas dynamics, and prevents the floating ball from being blown by high-speed airflow to cause the exhaust port to be closed prematurely without influencing air suction or exhaust. The dynamic low seal can keep good seal under the working condition of low pressure (0.1 Mpa), and the leakage phenomenon is avoided.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic partial structure diagram of the present invention, which only shows the TMF membrane filter 1, the first water supply pipeline 4, the water source 5, the second water supply pipeline 6, the chemical cleaning chemical box 7, the chemical supply pipeline 8, the air supply pipeline 9 and the air source 10;

fig. 3 is a schematic view of the present invention showing only the TMF membrane filter 1, the first water outlet pipeline 20, the concentrated solution tank 3, the second water outlet pipeline 30, the filtered water tank 40, the exhaust pipeline 50 and the trench 60.

Detailed Description

Objects, advantages and features of the present invention will be illustrated and explained by the following non-limiting description of preferred embodiments. These embodiments are merely exemplary embodiments for applying the technical solutions of the present invention, and all technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the scope of the present invention.

In the description of the embodiments, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the embodiment, the operator is used as a reference, and the direction close to the operator is a proximal end, and the direction away from the operator is a distal end.

The TMF sewage treatment system disclosed by the present invention is explained with reference to the accompanying drawings, as shown in fig. 1, the system includes at least one TMF membrane filter 1, preferably a plurality of TMF membrane filters 1, a liquid inlet end pipe of each TMF membrane filter 1 is connected to a concentrated liquid tank 3 through a liquid inlet pipeline 2 and connected to a water source 5 through a first water supply pipeline 4, the water source 5 is connected to a chemical cleaning chemical tank 7 through a second water supply pipeline 6, and the chemical cleaning chemical tank 7 is connected to a liquid inlet end of the TMF membrane filter 1 through a chemical supply pipeline 8; the pneumatic pump 84 on the medicine supply pipeline 8 is connected with the air source 10 through the air supply pipeline 9, the concentrated solution outlet of the TMF membrane filter 1 is connected with the concentrated solution tank 3 through the first water outlet pipeline 20, and the clear solution outlet of the TMF membrane filter is connected with the filtering water tank 40 through the second water outlet pipeline 30; the exhaust port of the TMF membrane filter 1 is connected to a trench 60 via an exhaust line 50.

The TMF membrane filter 1 may be any known tubular microfiltration membrane device, and is known in the art and not described in detail herein.

As shown in fig. 1 and fig. 2, the liquid inlet pipeline 2 is used for introducing wastewater to be treated into the TMF membrane filter 1 for filtering, the liquid inlet pipeline 2 includes a pipeline 21 connected to a water outlet of the concentrated liquid tank 3, a centrifugal pump 22, a butterfly valve 23 and a pressure regulating valve 24 are sequentially arranged on the pipeline 21 from a connection end thereof with the concentrated liquid tank 3, a pipe diameter of the pipeline between the centrifugal pump 22 and the butterfly valve 23 is changed from small to large, and the pressure of liquid entering the TMF membrane filter 1 can be effectively regulated through the pressure regulating valve 24, so that the water pressure during operation can be flexibly regulated.

As shown in fig. 1 and fig. 2, the first water supply line 4 is used for introducing clean water from a water source 5 into the TMF membrane filter 1 for cleaning, the first water supply line 4 includes a pipe 41 having one end connected to the water source 5, the other end of the pipe 41 is connected between the butterfly valve 23 of the liquid inlet pipe 2 and the pressure regulating valve 24, and the pipe 41 is provided with ball valves 42 and 43 for controlling the on-off of the pipe 41.

As shown in fig. 1 and 2, the second water supply pipeline 6 is used for introducing clean water into the chemical cleaning chemical box 7 to prepare cleaning chemicals, is communicated with the first water supply pipeline 4 to connect with a water source 5, and includes a pipeline 61 connected to the pipeline 41 of the first water supply pipeline 4, a connection point of the pipeline 61 and the pipeline 41 is located at a rear end of the ball valve 42 (in this embodiment, a position where the liquid passes first and then passes is defined as a front position), a butterfly valve 62 is disposed thereon, and two branches are disposed thereon in front of the butterfly valve 62, and each branch includes a branch pipe 63, 64 and a ball valve 65, 66 disposed on each branch pipe 63, 64.

As shown in fig. 1 and 2, the two branch pipes 63 and 64 are respectively connected to two reagent tanks 71 and 72 of the chemical cleaning reagent tank 7, the reagent tanks 71 and 72 are respectively used for allocating reagents required for cleaning, one reagent tank 71 is used for allocating reagents for acid cleaning, the other reagent tank 72 is used for allocating requirements for alkali cleaning, and in actual cleaning, sodium hydroxide, sodium hypochlorite and hydrochloric acid are used as reagents, and in cleaning, the two reagent tanks 71 and 72 are respectively connected to the reagent supply pipeline 8 and the trench through the discharge branch pipes 73 and 74.

As shown in fig. 1 and fig. 2, the medicine supply pipeline 8 is used for introducing the medicine in the chemical cleaning medicine box 7 into the TMF membrane filter 1 for chemical cleaning, and includes two medicine supply branches 81 and 82 connected to the medicine pools 71 and 72, respectively, each of the medicine supply branches 81 and 82 includes a branch pipe connected to a main medicine supply pipe 83, each of the branch pipes is provided with a ball valve,

as shown in fig. 1 and 2, the other end of the main drug supply pipe 83 is connected to the pipeline 41 between the pneumatic valves 42 and 43, the main drug supply pipe 83 is provided with a pump and a ball valve 85 in sequence from the connection end with the drug supply branch, the pump may be various known pumps, such as a centrifugal pump, a circulating pump, etc., preferably a pneumatic pump 84, and the pneumatic pump 84 may be various known structures using compressed air as a power source, such as a pneumatic diaphragm pump, so that in the whole system, both the pneumatic pump 84 can be driven by using an air source and the TMF membrane filter 1 can be air-washed by using the air source. The main drug supply pipe 83 is further connected with a drain pipe 86, the connection point of the drain pipe 86 and the main drug supply pipe 83 is located at the connection trench of the drain pipe 44, the front end of the ball valve 45 is arranged on the connection point, the other end of the drain pipe 86 is connected with the trench, and the ball valve 87 is arranged on the connection point.

As shown in fig. 1 and fig. 2, the gas supply pipe 9 is used for introducing compressed gas from a gas source 10 into the pneumatic pump 84 to drive the pneumatic pump 84 to operate, the gas supply pipe 9 includes a gas supply pipe 91, and a ball valve 92, pressure regulating valves 93 and 94, a ball valve 95 and an electromagnetic valve 96 are sequentially arranged on the gas supply pipe 91 from one end of the gas supply pipe connected with the gas source 10.

As shown in fig. 1 and fig. 3, the first water outlet pipeline 20 includes a water outlet pipe 201, a ball valve 202 is disposed on the water outlet pipe 201, the water outlet pipe 201 is connected to a section of water storage pipe 203, a pipe 204 connected to the filtered water tank 40 and the air supply pipeline 9 is connected to a liquid outlet end of the water storage pipe 203, a ball valve 205, a pressure gauge 206, a butterfly valve 207, a check valve 208, an electric butterfly valve 209, and a flow meter 210 are sequentially disposed on the pipe 204 from an end thereof connected to the filtered water tank 40, and a connection point of the water outlet pipe 203 and the pipe 204 is located between the check valve 208 and the butterfly valve 207.

As shown in fig. 1 and fig. 3, the second water outlet pipeline 30 includes a water outlet pipeline 301, the water outlet pipeline 301 is sequentially provided with a pressure regulating valve 302 and a butterfly valve 303, and the water outlet pipeline 301 is connected to the concentrate tank 3 to realize circulation of the concentrated wastewater of the TMF membrane filter 1.

Further, since chemical cleaning is required, and waste liquid after chemical cleaning needs to be treated by backflow or removed by other means, as shown in fig. 1 and fig. 3, the first water outlet pipeline 20 and the second water outlet pipeline 30 are respectively connected to the chemical cleaning medicine box 7 through backflow branches 70 and 80, and the backflow branches 70 and 80 are used for introducing cleaned medicine back to the chemical cleaning medicine box 7 or discharging the cleaned medicine through a trench.

As shown in fig. 1 and fig. 3, the return branch 70 includes a return pipe 701 connected to the water outlet pipe 201 of the first water outlet pipeline 20, a connection point of the return pipe 701 and the water outlet pipe 201 is located at the front end of the ball valve 202, the return pipe 701 is provided with ball valves 702, 703, the return pipe 701 is connected with 3 return branches 704, 705, 706, the two return branches 704, 705 are respectively provided with ball valves and are respectively connected with one of the reagent tanks 71, 72 and share a structure with the two branch pipes 63, 64 and valves of the second water inlet pipeline 6, so that the pipelines can be simplified; the return branch 706 is connected with a trench, in addition, the return pipe 701 is also connected with a pressure measuring pipe 707, two ends of the pressure measuring pipe 707 are connected with the return pipe 701 at the front end and the rear end of the ball valve 703, a flow meter 708 is arranged on the pressure measuring pipe 707, the position of the ball valve 703 is lower than that of the lowest TMF membrane filter 1, and the highest point of the pressure measuring pipe 707 is higher than that of the highest TMF membrane filter 1.

As shown in fig. 1 and 3, the return branch 80 includes a return pipe 801 connected to the outlet pipe 301 between the pressure regulating valve 302 and the butterfly valve 303, the return pipe 801 is provided with a ball valve 802, an output end of the return pipe 801 is connected to three return branches 803, 804, and 805, the two return branches 803 and 804 are respectively provided with a ball valve and are respectively connected to one of the medicament pools 71 and 72, and the return branch 805 is connected to a trench.

As shown in fig. 1 and fig. 3, the exhaust pipeline 50 includes an automatic exhaust valve 501 disposed on a pipe 502, where the pipe 502 is preferably an engineering plastic pipe, such as a PVC pipe, and an outlet end of the pipe is connected to a trench; the shell of the automatic exhaust valve 501 is an engineering plastic shell, the preferred main material of the shell is UPVC, the shell comprises an upper interface and a lower interface, a buoy is arranged in the shell, the buoy is designed with a direct current channel, and a raised part of a base of the shell of the automatic exhaust valve can be tapped for connecting a pressure gauge and also can be used as an exhaust valve check point or used for drainage test. The specific structure of the automatic exhaust valve 501 is known in the art and will not be described herein.

The automatic exhaust valve adopts positive pressure exhaust and negative pressure air intake design, and has exhaust and air intake functions. The automatic exhaust valve automatically exhausts a small amount of air valve accumulated inside under the pressure state of the pipeline. Negative pressure air intake can discharge air in the pipeline when the empty pipeline is filled with water and can automatically intake air when the pipeline is emptied. Especially under the working condition of water column separation, the valve can be automatically opened, and air is fed into the pipeline to eliminate vacuum. In the water injection process of the system, a large amount of air is discharged from the upper opening of the power type automatic exhaust valve. After water enters the air cavity, the floating ball is closed along with the rise of the liquid level, and the air inlet and the air outlet are rapidly formed. The valve body design and the floating ball anti-blowing design which accord with pneumatic dynamics can prevent the floating ball from being blown by high-speed airflow to cause the premature closing of an exhaust valve port before water enters an air valve. The system has a pressure state: the automatic exhaust valve is closed when the system is in a pressurized state. The negative pressure state of the system: when the system is emptied, a negative pressure difference is formed, air pushes the floating ball downwards, the power type quick air inlet is opened, and air enters the automatic exhaust valve to avoid negative pressure from being formed in the system. Thereby can effectually avoid prior art to carry out the easy weeping problem that the exhaust caused through check valve and hose.

The utility model has a plurality of implementation modes, and all technical schemes formed by adopting equivalent transformation or equivalent transformation all fall within the protection scope of the utility model.

Claims (6)

1. TMF sewage treatment system which characterized in that: the device comprises at least one TMF membrane filter (1), wherein a liquid inlet end pipe of the TMF membrane filter (1) is connected with a concentrated liquid tank (3) through a liquid inlet pipeline (2) and is connected with a water source through a first water supply pipeline (4), the water source (5) is connected with a chemical cleaning medicine box (7) through a second water supply pipeline (6), and the chemical cleaning medicine box (7) is connected with a liquid inlet end of the TMF membrane filter (1) through a medicine supply pipeline (8); the pneumatic pump (84) on the medicine supply pipeline (8) is connected with the air source (10) through the air supply pipeline (9), the concentrated solution outlet of the TMF membrane filter (1) is connected with the concentrated solution tank (3) through the first water outlet pipeline (20), and the clear solution outlet of the TMF membrane filter is connected with the filtering water tank (40) through the second water outlet pipeline (30); the exhaust port of the TMF membrane filter (1) is connected with a trench (60) through an exhaust pipeline (50).
2. 2. The TMF sewage treatment system of claim 1, wherein: the chemical cleaning medicine box (7) comprises two medicine pools (71 and 72), and the two medicine pools (71 and 72) are respectively connected with two branches of the second water supply pipeline (6) and two medicine supply branches (81 and 82) of the medicine supply pipeline (8).
3. 3. The TMF sewage treatment system of claim 1, wherein: the first water outlet pipeline (20) and the second water outlet pipeline (30) are respectively connected with the chemical cleaning pesticide box (7) and the trench through reflux branches (70 and 80).
4. 4. The TMF sewage treatment system of claim 1, wherein: the first water outlet pipeline (20) comprises a section of water storage pipe (203), and the liquid outlet end of the water storage pipe (203) is connected with a pipeline connected with the filtering water tank (40) and the air supply pipeline (9).
5. 5. The TMF sewage treatment system of any of claims 1-4 wherein: the exhaust pipeline (50) comprises an automatic exhaust valve (501) arranged on a pipeline.
6. 6. The TMF sewage treatment system of claim 5, wherein: the shell of the automatic exhaust valve (501) is an engineering plastic shell, and the pipeline (502) of the exhaust pipeline (50) is an engineering plastic pipe.

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