CN217264966U - Single-flow water purification system - Google Patents

Abstract

The utility model discloses a single-flow water purification system, which comprises a raw water treatment area, the device comprises a clean water area and an air inlet area, wherein the raw water treatment area is provided with a raw water inlet pipeline, a separation membrane pipe is horizontally laid, the clean water area is communicated with the water outlet end of the separation membrane pipe, an air distribution mud separation plate is arranged below the separation membrane pipe, a mud discharge filter head and an air flush filter head are distributed on the air distribution mud separation plate and comprise a filter cap and a filter handle, the filter cap is positioned above the air distribution mud separation plate, the filter handle penetrates through the air distribution mud separation plate downwards, a granular rough surface body is spread on the air distribution mud separation plate, a mud collection hopper is arranged below the air distribution mud separation plate, a mud discharge pipe for discharging mud to the outside is arranged in the mud collection hopper, a scum overflow groove is arranged above the separation membrane pipe and is communicated with a scum overflow pipe for discharging scum to the outside, the air inlet area is communicated with the air inlet end of the separation membrane pipe, and the raw water treatment area is provided with an air inlet pipeline for introducing air to holes in the filter handle of the air flush filter head. The utility model can greatly reduce the investment cost; the construction period can be greatly shortened, and the water supply speed in production can be greatly advanced.

Description

Single-flow water purification system

Technical Field

The utility model relates to an environmental protection feedwater drainage field, more specifically the saying so, it relates to a single flow water purification system.

Background

At present, two water purification processes are generally adopted, one is a conventional process treatment technology, namely an 'old four-section' conventional water treatment technology: in-water (raw water or turbid water) -adding medicine (adding a flocculant system) -mixing (mechanical or mixer mixing) -flocculation reaction (reaction tank device) -precipitation (sedimentation tank) -filtering (various filters) -effluent water (clear water) -resident users and other multi-process technologies. Its drawbacks and disadvantages are: the method has the advantages of multiple process sections, complex treatment, multiple structures, large occupied area, high construction cost, huge investment, long construction period, slow production, complex management, multiple operators, high operation and maintenance cost, low water yield, poor water quality and the like. The other is as follows: the treatment technology of dosing, mixing, reaction flocculation and membrane filtration is as follows: intake water (raw water or turbid water) -adding chemicals (adding a flocculant system) -mixing (mechanical or mixer mixing) -reaction flocculation (reaction tank device) -membrane filtration (generally a plastic membrane, namely an organic membrane) -effluent water (clear water) -resident users and other multi-process technologies. Its drawbacks and disadvantages are: the method has the advantages of complex process, many structures, expensive membrane price, short service life (generally about 4 years for updating the membrane group), expensive engineering cost, huge investment, long construction period, slow production, complex management, necessity of regular chemical cleaning, serious influence on water quality, high operation and maintenance cost, short membrane service life, high replacement cost, influence on normal water supply, serious environmental pollution caused by chemical cleaning agents and replaced waste membranes, and the like.

Disclosure of Invention

The utility model aims at providing a single-flow water purification system, which cancels four process sections of dosing, mixing, flocculation, sedimentation and clarification and the like in the traditional process, directly feeds turbid raw water into a tubular ceramic membrane or composite membrane water treatment tank, and carries out single-flow negative pressure filtration or positive pressure filtration to achieve the purposes of obtaining clear water and removing sludge turbid water, thereby greatly reducing the investment cost; the construction period for constructing water purification engineering facilities can be greatly shortened, and the production and water supply speed can be greatly advanced; the construction period is shortened, and the economic benefit and the social and economic benefit of a production project can be generated; meanwhile, the addition of chemical agents is cancelled, so that by-products left by the chemical agents and additives in the drinking water are eliminated, and the drinking water is ecological and natural due to the fact that the drinking water is subjected to hidden increasing harm to human health after being drunk for a long time; the drinking water is healthier and safer.

The utility model provides a technical scheme that its technical problem adopted is:

a single-flow water purification system comprises a raw water treatment area, the device comprises a clean water area and an air inlet area, wherein a raw water inlet pipeline is arranged in the raw water treatment area, a separation membrane pipe is horizontally laid in the raw water treatment area, the clean water area is communicated with the water outlet end of the separation membrane pipe, an air distribution mud separation plate is arranged below the separation membrane pipe, a mud discharge filter head and an air flushing filter head are distributed on the air distribution mud separation plate, the mud discharge filter head and the air flushing filter head respectively comprise a filter cap and a filter handle, the filter cap is positioned above the air distribution mud separation plate, the filter handle penetrates through the air distribution mud separation plate and faces downwards, a granular rough surface body is spread on the air distribution mud separation plate, a mud collection hopper is arranged below the air distribution mud separation plate, a mud discharge pipe for discharging mud to the outside is arranged in the mud collection hopper, an overflow groove is arranged above the separation membrane pipe and is communicated with a scum overflow pipe for discharging scum to the outside, the air inlet area is communicated with the air inlet end of the separation membrane pipe, and the raw water treatment area is provided with an air inlet pipeline for feeding air to holes in the filter handle of the air flushing filter head.

Preferably, the former water treatment district is located the pond internal, and the clear water district is for establishing a space in the pond or outside the pond, and the space relies on pond inner wall or pond outer wall to set up, including bottom plate and curb plate, the top is open, and all separation membrane pipe outlet ends pass curb plate or pond wall, and the pipe wall is sealed with the junction of curb plate or pond wall, perhaps the space is enclosure space, and enclosure space relies on pond inner wall or pond outer wall to set up, including bottom plate, roof and curb plate.

Preferably, the height of the clean water zone is from the top of the tank to the bottom of the tank, or from the position of the separation membrane tube to the bottom of the tank.

Preferably, a negative pressure suction pump is arranged in the clear water area.

Preferably, the separation membrane is a ceramic membrane or a composite membrane.

Preferably, the gas distribution mud separation partition plate is horizontally fixed on the inner wall of the tank, and a gap between the gas distribution mud separation partition plate and the inner wall of the tank is smaller than the size of the granular rough surface body.

Preferably, the filter handle of the mud discharging filter head and the filter handle of the air impact filter head are vertically downward, the hole site on the filter handle of the mud discharging filter head is lower than the hole site on the filter handle of the air impact filter head, an air distribution layer is formed between the bottom of the air distribution mud separation partition plate and the hole site on the filter handle of the air impact filter head, and the air inlet pipeline feeds air into the range of the air distribution layer.

Preferably, the filter handle of the sludge discharge filter head is longer than the filter handle of the air-jet filter head, a hole in the filter handle of the sludge discharge filter head is arranged below the filter handle of the air-jet filter head, the air distribution and separation plate is a plane plate, the air distribution layer is arranged between the bottom of the air distribution and separation plate and the bottom of the filter handle of the air-jet filter head, the air inlet direction is perpendicular to the filter handle of the air-jet filter head, and the sludge discharge filter head and the air-jet filter head are uniformly distributed.

Preferably, the mud collecting hopper is provided with a groove in the middle and slopes on two sides, and the mud discharging pipe is positioned in the groove.

Preferably, the size of the granular rough surface body is larger than the size of the holes on the filter caps of the sludge discharge filter head and the air impact filter head.

Preferably, the air inlet pipeline is connected with the air inlet main pipe, and the air inlet pipeline is provided with an air blast control valve; the air inlet area is a closed space arranged in the pool or outside the pool, the closed space is arranged by depending on the inner wall or the outer wall of the pool and comprises a bottom plate, a top plate and side plates, the air inlet ends of all the separation membrane tubes penetrate through the side plates or the pool wall, the connection part of the tube wall and the side plates or the pool wall is sealed, the air inlet area is connected with an air inlet branch tube, the air inlet branch tube is connected with an air inlet main tube, and the air inlet branch tube is provided with an air-water back washing control valve; or the air inlet area is replaced by an air inlet pipeline, and the air inlet end of the separation membrane tube is directly connected with the air inlet pipeline.

The utility model has the advantages that:

1. the four processes of dosing, mixing, flocculation and sedimentation clarification existing in the traditional process are cancelled, turbid raw water is directly fed into a tubular ceramic membrane or composite membrane treatment tank, and single-process negative pressure filtration or positive pressure filtration is carried out, so that the purposes of obtaining high-quality stable clear water and removing sludge turbid water are achieved, and the engineering investment cost can be greatly reduced; the construction period for constructing water purification engineering facilities can be greatly shortened, and the production and water supply speed can be greatly advanced; shortening the construction period can produce economic benefits and social and economic benefits of the production project.

2. The method has great adaptability to the change of the turbidity of raw water, and avoids the requirement of adjusting the adding amount of the added flocculating agent in time in the traditional water purification process.

3. The water purifying device has great adaptability to seasonal temperature and seasonal climate change, and avoids the requirement that the traditional water purifying process adjusts the water inflow and the addition and reduction of the flocculating agent in time in the seasonal climate change.

4. The addition of chemical agents is cancelled, the by-products left by the chemical agents and additives in the drinking water are eliminated, and the drinking water is ecological and natural due to the fact that the drinking water causes hidden and increasing harm to human health after being drunk for a long time; the drinking water is healthier and safer.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic diagram showing the structure inside the raw water treatment zone and biased to the view angle of the air intake zone.

Fig. 3 is a schematic view showing the structure inside the raw water treatment zone and biased to the view angle of the clear water zone.

Fig. 4 is a schematic structural view showing the interior of the fresh water region and the air intake region.

Fig. 5 is a front view of the present invention.

The labels in the figure are: a raw water treatment area 1, a raw water inlet pipeline 101, a separation membrane pipe 102, a separation membrane pipe water outlet end 1021, a separation membrane pipe air inlet end 1022, an air distribution mud separation partition plate 103, a mud discharge filter head 104, a mud discharge filter cap 1041, a mud discharge filter handle 1042, an air flushing filter head 105, an air flushing filter cap 1051, an air flushing filter handle 1052, a granular rough surface body 106, a mud collecting hopper 107, a mud discharge pipe 108, a mud discharge valve 1081, a scum overflow trough 109, a scum overflow trough 110, an air inlet pipeline 111, an air flushing control valve 1111, a water distribution plate 112 and a connecting piece 113;

a clear water area 2, a negative pressure suction pump 201, a water outlet pipeline 202 and a water outlet valve 203;

an air inlet area 3, an air inlet branch pipe 301, an air inlet main pipe 302 and a back washing control valve 303;

a tank body 4.

Detailed Description

The structures referred to in the present invention or these terms of art used are further described below. These illustrations are merely examples of how the invention may be carried out and are not intended to limit the invention in any way.

The present invention will be further described with reference to the accompanying drawings and the following detailed description. In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left" and "right" 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 simplification of description, but do not indicate or imply that the indicated position or element must have a specific orientation, be constituted in a specific orientation, and be operated, and thus, are not to be construed as limitations of the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the present invention, unless otherwise explicitly specified or limited, the terms "connected" and "fixed" are to be understood broadly, and for example, "fixed" may be a fixed connection, a detachable connection, or an integral body; either directly or indirectly through intervening media, or may be interconnected between two elements or in a relationship wherein the two elements interact, unless expressly limited otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 1 to 5, the single-pass water purification system comprises a raw water treatment area 1, a clear water area 2 and an air intake area 3, wherein the raw water treatment area 1 is provided with a raw water inlet pipe 11, the raw water treatment area 1 is horizontally laid with a separation membrane pipe 102, the clear water area 2 is communicated with a water outlet end 1021 of the separation membrane pipe, an air distribution mud separation partition plate 103 is arranged below the separation membrane pipe 102, a mud discharge filter head 104 and an air flush filter head 105 are distributed on the air distribution mud separation partition plate 103, the mud discharge filter head 104 and the air flush filter head 105 both comprise a filter cap and a filter handle, the filter cap is positioned above the air distribution mud separation partition plate 103, the filter handle passes through an air distribution mud separation partition plate 13 downwards, a granular rough surface body 106 is laid on the air distribution mud separation partition plate 103, a mud collection hopper 107 is arranged below, a through long mud discharge pipe 108 for discharging mud to the outside is arranged in the mud collection hopper 107, a scum overflow trough 109 is arranged above the separation membrane pipe 102, the scum overflow trough 109 is communicated with a scum overflow pipe 110 for discharging scum to the outside, the air inlet area is communicated with the air inlet end 1022 of the separation membrane pipe, and the raw water treatment area 1 is provided with an air inlet pipeline 111 for introducing air to the hole on the filter handle of the air impact filter head 105.

All devices of four process sections of dosing, mixing, flocculation, sedimentation, clarification and the like in the traditional process are cancelled, turbid raw water is directly fed into a tubular ceramic membrane or composite membrane water treatment tank for single-flow negative pressure filtration or positive pressure filtration, the purposes of obtaining clear water and removing sludge turbid water are achieved, and the investment cost can be greatly reduced; the construction period for constructing water purification engineering facilities can be greatly shortened, and the production and water supply speed can be greatly advanced; shortening the construction period can produce economic benefits and social and economic benefits of production projects. Moreover, the method has great adaptability to the change of the turbidity of raw water, and avoids the requirement that the adding amount of a flocculating agent is required to be adjusted in time in the traditional water purification process; meanwhile, the water purifier is highly adaptive to seasonal temperature and seasonal climate change, and the requirements of timely adjusting the water inflow and increasing and decreasing the adding amount of a flocculating agent in the seasonal climate change in the traditional water purifying process are avoided. Meanwhile, the addition of a chemical agent (flocculating agent) is cancelled, so that by-products left by the chemical agent and the additive in the drinking water are eliminated, and the drinking water is subjected to recessive increasing harm to human health after being drunk for a long time, so that the drinking water returns to ecology and returns to nature; the drinking water is healthier and safer.

As a specific implementation mode, the raw water treatment area 1 is positioned in the tank body 4, the clean water area 2 is a space arranged in the tank or outside the tank, the space is arranged by means of the inner wall or the outer wall of the tank and comprises a bottom plate and side plates, the top of the space is open, the water outlet ends 1021 of all the separation membrane tubes penetrate through the side plates or the tank wall, the joints of the tube walls and the side plates or the tank wall are sealed, or the space is a closed space which is arranged by means of the inner wall or the outer wall of the tank and comprises a bottom plate, a top plate and side plates. That is, when the clean water area 2 is arranged outside the tank, the water outlet ends 1021 of all the separation membrane tubes penetrate through the tank wall, the joints of the tank walls and the side plates are sealed, and the end seal shape of the clean water area 2 can be square, rectangular or circular.

As a specific embodiment, the height of the clean water zone 2 can be from the top of the tank to the bottom of the tank, or from the position of the separation membrane tube 102 to the bottom of the tank. Of course, the two forms are only possible descriptions, and the height, width and length of the clear water zone are not limited herein and can be designed according to the amount of treated water.

In a specific embodiment, a negative pressure suction pump 201 is arranged in the clean water area 2, the negative pressure suction pump 201 is connected with an outlet pipe 202, and the outlet pipe 202 is provided with an outlet water valve 203. Raw water is separated by the separation membrane tube 102, clear water is introduced into the membrane tube under negative pressure, sludge and scum are separated by the membrane tube, clear water is introduced into the clear water area 2 through the water outlet end 1021 of the separation membrane tube, and is pumped by the negative pressure suction pump 201 to be sent to a clear water reservoir or a water storage pool and users along with a pipeline.

As a specific embodiment, the raw water inlet pipe 101 is positioned above the separation membrane pipe 102. A water distribution plate 112 is arranged below the mouth of the raw water inlet pipeline, and the water distribution plate 112 is fixed below the mouth of the raw water inlet pipeline through a connecting piece 113. The raw water is uniformly distributed between the separation membrane tubes 102 by the water distribution plate 112.

The separation membrane tube 102 is used to separate raw water. As a specific embodiment, the separation membrane adopts a ceramic membrane or a composite membrane. The wall of the ceramic membrane or the composite membrane is densely distributed with micropores, raw water flows outside the membrane tube under the action of pressure, water, inorganic salt and small molecular substances permeate the membrane, and suspended substances, microorganisms, glue, macromolecular substances and the like are intercepted by the membrane, so that the purposes of separation, concentration, purification, environmental protection and the like are achieved. The ceramic membrane or the composite membrane has the advantages of high separation efficiency, stable effect, good chemical stability, acid and alkali resistance, organic solvent resistance, bacteria resistance, high temperature resistance, durability, pollution resistance, high mechanical strength, good regeneration performance, simple separation process, low energy consumption, simple and convenient operation and maintenance, long service life and the like.

The air distribution and mud separation partition plate 103 is used as a support plate for mounting a mud discharge filter head 104 and an air impact filter head 105 on the one hand, and is used for bearing and spreading a granular rough surface body 106 on the other hand. In a specific embodiment, the air distribution mud separation plate 103 is horizontally fixed on the inner wall of the tank, and a gap for allowing the granular rough surface body 106 to fall is not formed between the plane where the air distribution mud separation plate 103 is located and the inner wall of the tank. In a specific embodiment, the gap between the air distribution mud separation partition plate 103 and the inner wall of the tank is smaller than the size of the granular rough surface body 106. The granular rough surface bodies 106 distributed on the air distribution mud separation partition plate 103 are prevented from falling below the air distribution mud separation partition plate 103.

The sludge discharge head 104 is used for discharging sludge. In some embodiments, the mud filter head 104 includes a mud filter cap 1041 and a mud filter handle 1042, the mud filter handle 1042 facing vertically downward. The number of the sludge discharge filter heads 104 is arranged according to the design requirement and is uniformly distributed, so that the sludge in each area of the gas distribution and mud separation partition plate 103 can be discharged through the sludge discharge filter heads 104. The sludge discharge filter head 104 is a common filter head on the market, is formed by injection molding of ABS engineering plastics, and has the advantages of reasonable structure, firm connection, high bearing strength, no deformation of gaps, and long handle generally larger than 150mm or is determined according to the scale of water treatment quantity.

The sludge separated by the separation membrane tube 102 settles down to the gas distribution mud separation partition plate 103, enters the mud discharging filter handle 1042 through the holes and gaps on the mud discharging filter cap 1041, flows out from the holes, gaps and end orifices on the filter handle, and settles down to the mud collecting hopper 107. In some embodiments, air can also be supplied to the sludge discharge filter head 104, that is, the air enters from the filter handle and is ejected from the filter cap, and the holes and the gaps of the sludge discharge filter head 104 are easily blocked under long-term use, so that the holes and the gaps are unobstructed through air-water backwashing, and the sludge discharge function is recovered.

The mud collection hopper 107 is used for accumulating settled mud. In some embodiments, the mud collecting hopper 107 has a groove in the middle and slopes on both sides, so that the mud discharged from the mud discharging filter head 104 sinks onto the slope and into the groove, and then slides down and accumulates into the groove, thereby facilitating the discharge of the mud discharging pipe 108.

The through-length sludge discharge pipe 108 is used for discharging the sludge out of the tank. In some embodiments, the mud pipe 108 is disposed in the groove, and is installed throughout, and one end of the pipe is closed, and the other end of the pipe extends out of the tank body wall and is connected to a mud valve 1081. The sludge valve 1081 is opened, and the sludge in the sludge discharge pipe 108 is discharged through the sludge valve 1081. The structure and the principle of sludge discharge belong to the prior art, and reference can be made to the patent and literature of the disclosed sludge discharge device.

The air-blast filter head 105 is used for air-water backwashing. In some embodiments, the air impingement head 105 includes an air impingement cap 1051 and an air impingement handle 1052, with the air impingement handle 1052 facing vertically downward. The positions of the holes and the gaps on the sludge discharging filter handle 1042 are lower than the positions of the holes in the air flushing filter handle 1052, an air distribution layer is formed between the bottom of the air distribution mud separation partition plate 103 and the positions of the holes on the air flushing filter handle 1052, and air is fed into the range of the air distribution layer through the air inlet pipeline 111. Wherein, the small holes, the gaps and the openings at the tail ends of the filter handles on the sludge discharge filter head and the air flushing filter head are collectively called as holes. In a specific embodiment, the sludge discharging filter rod 1042 is longer than the air flushing filter rod 1052, the hole on the sludge discharging filter rod 1042 is below the air flushing filter rod 1052, the air distribution and separation partition plate 103 is a flat plate, and the air distribution layer is between the bottom of the air distribution and separation partition plate 103 and the bottom of the air flushing filter rod 1052. The number of the air-blast filter heads 105 is not limited, and the air-blast filter heads are uniformly distributed, so that each area is provided with sprayed air water. The air impact filter head 105 is formed by injection molding of ABS engineering plastics, and has the advantages of reasonable structure, firm connection, high bearing strength and no deformation of gaps.

Some micropores on the pipe wall of the separation membrane pipe working for a long time can be blocked by sludge, if the separation membrane pipe is not cleaned in time, the permeation flux can be reduced, the separation performance is reduced, and the water treatment efficiency is reduced or lowered. During back flushing, air enters the air distribution layer through the air inlet pipeline 111, and air and water can simultaneously enter from holes, gaps and end orifices on the filter handle of the air flushing filter head and are ejected from the gaps on the filter cap of the air flushing filter head to strongly flush and clean peripheral membrane pieces. The positions of the holes and the gaps on the filter handle of the sludge discharge filter head are lower than the positions of the holes and the gaps on the filter handle of the air-jet filter head, and the air distribution layer is arranged between the bottom of the air distribution mud separation partition plate 103 and the positions of the holes and the gaps on the filter handle of the air-jet filter head, so that the air-water back washing does not influence the sludge discharge of the sludge discharge filter head 104.

The granular rough surface body 106 is used for colliding and rubbing the separation membrane tube 102 on one hand, so that the attached pollutants accumulated on the outer wall of the separation membrane tube 102 are removed and fall off. On the other hand, the sludge distributing device is used for scattering sludge settled on the gas distribution mud isolation partition plate 103, so that the sludge is lifted and fully discharged by the sludge discharge filter head 104.

In some embodiments, the size of the granular scalenohedron 106 is larger than the size of the holes in the caps of the sludge discharge filter head 104 and the air impact filter head 105, so that the granular scalenohedron 106 does not follow the sludge discharge filter head 104 and the air impact filter head 105 and does not cause clogging of the sludge discharge filter head 104 and the air impact filter head 105. The number of the granular rough surface bodies 106 is not limited, but the quantity does not influence the sludge discharge of the sludge discharge filter head 104. The surface of the granular rough surface body 106 is rough, so that the friction between the granular rough surface body and the separation membrane tube 102 can be increased, and the capability of removing the attached layer on the outer wall of the separation membrane tube 102 is improved. In some embodiments, the grained surface bodies 106 are spheres that roll easily. Of course, the shape of the granular asperities 106 can be other shapes, such as circular rings, polyhedrons, or irregular shapes.

The separation membrane tube 102 working for a long time can also accumulate sludge and impurities on the outer wall of the tube to form an adhesion layer, and the adhesion layer is not easy to drop, so that not only the micropores are repeatedly blocked, but also the pressure bearing of the separation membrane tube 102 is increased. During back flushing, gas with certain pressure enters the gas distribution layer 1053 through the gas inlet pipeline 111, and gas and water can simultaneously enter from holes and gaps on the filter handle of the gas flushing filter head and are ejected from the gaps on the filter cap of the gas flushing filter head, so that the granular rough surface body 106 on the gas distribution mud separation partition plate 103 rolls and jumps, collides and rubs with the separation membrane tube 102, and an adhesion layer on the outer wall of the separation membrane tube 102 falls off, thereby achieving the purpose of removing pollutants adhered to the outer wall of the separation membrane tube 102.

The gas inlet area 3 is used for delivering gas with certain pressure into the separation membrane tube 102, and the gas pressure can be adjusted. In some embodiments, the air intake area 3 is a closed space arranged inside or outside the tank, the closed space is arranged by means of the inner wall or the outer wall of the tank and comprises a bottom plate, a top plate and side plates, the air intake ends of all the separation membrane tubes penetrate through the side plates or the tank wall, the joints of the tube walls and the side plates or the tank wall are sealed, the air intake area 3 is connected with the air intake branch tubes 301, the air intake branch tubes 301 are connected with the air intake main tube 302, the air intake branch tubes 302 are provided with air-water back-flushing control valves 303, and the air intake speed and the air intake flow are controlled by the air-water back-flushing control valves 303.

In a specific embodiment, the inlet port of the separation membrane tube is sealed when the water and sludge are discharged, or the inlet region 3 is filled with gas, and the pressure of the gas is higher than the water pressure in the separation membrane tube, so that the clear water is prevented from flowing out from the inlet end of the separation membrane tube 102.

As a specific embodiment, the inlet region 3 is replaced with an inlet conduit, even though the inlet end 1022 of the separator tube is directly connected to the inlet conduit. As a specific embodiment, the height of the gas inlet section 3 covers the gas inlet ends of all the separation membrane tubes 102. Of course, the height, width and length of the air intake zone are not limited herein and may be designed as desired. The gas in the gas inlet area 3 enters the separation membrane tube 102, and the gas and the water in the tank are simultaneously ejected from the micropores under certain air pressure, so that the gas-water backwashing is realized, the purpose of cleaning the through holes is achieved, and the separation performance of the separation membrane tube 102 is recovered.

In one embodiment, the water outlet end 1021 and the air inlet end 1022 are respectively located at two opposite ends of the separation membrane tube 102, and the clean water zone 2 and the air inlet zone 3 are respectively located at two sides of the raw water treatment zone 1.

The gas inlet pipe 111 is used for conveying gas with certain pressure in the raw water treatment area 1, and the gas pressure is adjustable. In one specific embodiment, the air intake pipe 111 is provided with an air blast control valve 1111, and the air intake pipe 111 is an air intake branch pipe and is connected to the air intake main pipe 302. The air inlet speed and the air inlet flow are controlled by the air blast control valve 1111.

The water purification process comprises the following steps: raw water to be treated enters a raw water treatment area 1 through a raw water inlet pipeline 101, is separated through a separation membrane tube 102, enters a membrane tube under negative pressure to be clean water, then enters a clean water area 2, and is pumped out through a negative pressure suction pump 201. The sludge (the substances capable of settling are collectively called sludge) and scum (the substances capable of floating on the water surface are collectively called scum) separated by the separation membrane tube 102, the sludge settles on the air distribution mud separation partition plate 103, enters the filter handle through the gaps on the filter cap of the mud discharge filter head, flows out of the holes, the gaps and the end orifices on the filter handle, settles in the mud collection hopper 107, and the settled mud accumulated in the mud collection hopper 107 is discharged through the mud discharge tube 108. The scum floats on the water surface of the raw water, and when the scum reaches the height of the scum overflow trough 109, the scum is gathered in the scum overflow trough 109 and then discharged through a scum overflow pipe 110.

During back flushing, the process is carried out simultaneously with the water purification process or the water purification process is closed, gas in the gas inlet area 3 enters the separation membrane tube 102, and under certain air pressure, the separation membrane tube is back flushed simultaneously with clean water and pollutants permeating pores of the membrane wall are flushed and extruded to a raw water area outside the membrane wall, and meanwhile, the purpose of through holes is achieved, so that the separation performance of the separation membrane tube is recovered. Meanwhile (or not simultaneously) the gas of the gas inlet pipeline 111 enters the gas distribution layer 1053, and under certain gas pressure, the gas and the water simultaneously enter from holes and gaps on the filter handle of the gas flushing filter head and are ejected from the gaps on the filter cap, so that the granular rough surface body 106 on the gas distribution mud separation partition plate 103 rolls and jumps, and collides and rubs with the separation membrane tube 102, so that the adhesion layer on the outer wall of the separation membrane tube 102 falls (part of the adhesion falls off and forms a scum layer to be gathered in a scum overflow trough), and the aim of cleaning the wall of the separation membrane tube is fulfilled.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. Single flow water purification system, including former water treatment district, clear water district and inlet zone, former water treatment district establishes former water inlet pipe, its characterized in that: the raw water treatment area is horizontally paved with a separation membrane tube, the clear water area is communicated with the water outlet end of the separation membrane tube, a gas-mud separation partition plate is arranged below the separation membrane tube, a mud discharge filter head and a gas-flushing filter head are distributed on the gas-distribution mud separation partition plate, the mud discharge filter head and the gas-flushing filter head respectively comprise a filter cap and a filter handle, the filter cap is positioned above the gas-distribution mud separation partition plate, the filter handle penetrates through the gas-distribution mud separation partition plate to face downwards, a granular rough surface body is paved on the gas-distribution mud separation partition plate, a mud collection hopper is arranged below the gas-distribution mud separation plate, a mud discharge tube for discharging mud to the outside is arranged in the mud collection hopper, a scum overflow trough is arranged above the separation membrane tube and is communicated with a scum overflow pipe for discharging scum to the outside, the gas inlet area is communicated with the gas inlet end of the separation membrane tube, and the raw water treatment area is provided with a gas inlet pipeline for introducing gas to holes in the filter handle of the gas-flushing filter head.

2. The single pass water purification system of claim 1, wherein: the raw water treatment district is located the pond internal, and the clear water district is for establishing a space in the pond or outside the pond, and the space relies on pond inner wall or pond outer wall to set up, including bottom plate and curb plate, the top is open, and all separation membrane pipe water outlet ends pass curb plate or pond wall, and the pipe wall is sealed with the junction of curb plate or pond wall, perhaps the space is enclosure space, and enclosure space relies on pond inner wall or pond outer wall to set up, including bottom plate, roof and curb plate.

3. The single pass water purification system of claim 2, wherein: a negative pressure suction pump is arranged in the clear water area.

4. The single pass water purification system of claim 1, wherein: the separation membrane is a ceramic membrane or a composite membrane.

5. The single pass water purification system of claim 1, wherein: the air distribution mud separation partition plate is horizontally fixed on the inner wall of the tank, and a gap between the air distribution mud separation partition plate and the inner wall of the tank is smaller than the size of the granular rough surface body.

6. The single pass water purification system of claim 1, wherein: the filter handle of the mud discharging filter head and the filter handle of the air-jet filter head are vertically downward, the hole site on the filter handle of the mud discharging filter head is lower than the hole site on the filter handle of the air-jet filter head, an air distribution layer is formed between the bottom of the air distribution mud separation partition plate and the hole site on the filter handle of the air-jet filter head, and an air inlet pipeline admits air to the range of the air distribution layer.

7. The single pass water purification system of claim 6, wherein: the filter handle of the mud filter head is longer than the filter handle of the air-jet filter head, the hole on the filter handle of the mud filter head is arranged below the filter handle of the air-jet filter head, the air distribution mud separation partition plate is a plane plate, the air distribution layer is arranged between the bottom of the air distribution mud separation partition plate and the bottom of the filter handle of the air-jet filter head, the air inlet direction is perpendicular to the filter handle of the air-jet filter head, and the mud filter head and the air-jet filter head are uniformly distributed.

8. The single pass water purification system of claim 1, wherein: the mud collecting bucket is provided with a groove in the middle and slopes on two sides, and the mud discharging pipe is positioned in the groove.

9. The single pass water purification system of claim 1, wherein: the size of the granular rough surface body is larger than the size of the holes on the filter caps of the sludge discharge filter head and the air impact filter head.

10. The single pass water purification system of claim 1, wherein: the air inlet pipeline is connected with the air inlet main pipe and is provided with an air blast control valve; the air inlet area is a closed space arranged in the pool or outside the pool, the closed space is arranged by depending on the inner wall or the outer wall of the pool and comprises a bottom plate, a top plate and side plates, the air inlet ends of all the separation membrane tubes penetrate through the side plates or the pool wall, the connection part of the tube wall and the side plates or the pool wall is sealed, the air inlet area is connected with an air inlet branch tube, the air inlet branch tube is connected with an air inlet main tube, and the air inlet branch tube is provided with an air-water back washing control valve; or the air inlet area is replaced by an air inlet pipeline, and the air inlet end of the separation membrane tube is directly connected with the air inlet pipeline.

Images