CN116621279A - A short-flow ultrafiltration membrane water purification device - Google Patents

Abstract

The invention discloses a short-flow ultrafiltration membrane water purification device. The short-flow ultrafiltration membrane water purification device is a superimposed and distributed multi-layer civil structure, which includes a clear water pool located at the lowest layer, and the clear water pool The upper layer is horizontally arranged with a grid flocculation tank, an upward flow inclined tube sedimentation tank and a submerged ultrafiltration membrane tank, and a plurality of ultrafiltration membrane modules are arranged in the submerged ultrafiltration membrane tank. The short-process ultrafiltration membrane water purification device can realize the short-process deep water purification treatment of raw water with the submerged ultrafiltration membrane pool as the core, that is, a new route for deep water purification treatment, which is suitable for new construction or upgrading. Waterworks offers more viable options. Compared with conventional full-process advanced treatment devices, this short-process ultrafiltration membrane water purification device simplifies the sand filtration process, integrates flocculation, sedimentation, ultrafiltration, and clean water tank disinfection and storage as a whole, significantly reduces the occupied area, and improves the quality of effluent water , saving operating energy consumption and facilitating water plant operation and management.

Description

A short-flow ultrafiltration membrane water purification device

technical field

The invention relates to the technical field of water treatment, in particular to a short-flow ultrafiltration membrane water purification device.

Background technique

In the past, the conventional water purification treatment process of waterworks was: water source → coagulation → sedimentation → filtration → disinfection → user. In terms of risk prevention and control, a higher degree of attention has been put forward, and higher industry standards have been put forward for the quality of purified water. The conventional water purification treatment process is mainly to remove inorganic suspended solids and large molecular weight organic matter in water, while it removes small molecular weight, solubility, hydrophilic, and polar organic matter in water, such as ammonia nitrogen, dissolved organic carbon, algae, etc. The effect is minimal, and the ability to intercept pathogenic microorganisms is not strong, and there are limitations in the ability to deal with the sudden risk of micro-pollution in water sources.

Therefore, in order to be able to effectively deal with the deterioration of water sources and the urgent need to improve water quality standards, more and more waterworks are gradually adopting conventional treatment combined with advanced treatment processes to achieve high-quality water supply. At present, the advanced treatment process of ozone activated carbon process, ultrafiltration membrane process and their combination is the most common in the field of water purification. The advanced treatment process of the whole process is: conventional treatment process + ozone activated carbon + ultrafiltration. The ozone activated carbon process can remove dissolved organic matter and dissolved toxic and harmful substances, which can be regarded as an advanced treatment process guaranteed in terms of chemical safety; while the ultrafiltration membrane process can reduce the turbidity of factory water and effectively control "two insects", which can be regarded as An advanced treatment process guaranteed in terms of biological safety. On the basis of the conventional water purification process, the combination of the two can effectively improve the quality of the produced water and deal with the sudden risk of micro-pollution of the raw water. However, new waterworks and upgrading of old waterworks often face problems such as land shortage and limited investment, and it is impossible to achieve a full-process deep water purification process. Therefore, the inventors are committed to improving or solving this problem.

Contents of the invention

In view of this, the present invention proposes a short-flow ultrafiltration membrane water purification device, which provides a new water purification route attempt, significantly reduces the occupied area, improves the quality of effluent water, saves energy consumption in operation, and facilitates the operation and management of water plants.

Technical scheme of the present invention is realized like this:

A short-flow ultrafiltration membrane water purification device, the short-flow ultrafiltration membrane water purification device is a superimposed distribution of multi-layer civil structures, the short-flow ultrafiltration membrane water purification device includes a clear water pool located at the bottom, A flocculation tank, a sedimentation tank, and a submerged ultrafiltration membrane tank are arranged horizontally on the upper layer of the clear water tank, and a plurality of ultrafiltration membrane modules are arranged in the submerged ultrafiltration membrane tank.

As a further optional solution of the short-flow ultrafiltration membrane water purification device, a lifting unit is provided above the submerged ultrafiltration membrane pool.

As a further option of the short-flow ultrafiltration membrane water purification device, the lifting unit includes a lifting frame arranged above the submerged ultrafiltration membrane pool and an electric single beam arranged on the lifting frame crane.

As a further option of the short-flow ultrafiltration membrane water purification device, the flocculation tank is a grid flocculation tank, the input end of the grid flocculation tank is connected to a raw water inlet pipe, and the grid flocculation tank is connected to the grid flocculation tank. A water distribution flower wall is arranged between the above-mentioned upward flow inclined tube sedimentation tanks, and the lower part of the water distribution flower wall is provided with a water distribution hole, and the water in the grid flocculation tank enters the upper part of the upward flow inclined tube sedimentation tank through the water distribution hole. bottom.

As a further option of the short-flow ultrafiltration membrane water purification device, the sedimentation tank is an upward-flowing inclined tube sedimentation tank, and the upward-flowing inclined-tube sedimentation tank is divided into a sedimentation area and an air-avoiding area in the horizontal direction. area, the lower part of the sedimentation area is divided into a water distribution area, a support structure layer is arranged above the water distribution area, a honeycomb inclined tube layer is arranged above the support structure layer, and a clear water area is divided above the honeycomb inclined tube layer. Area, the upper part of the clear water area is provided with a sedimentation tank outlet channel, and a plurality of water collection tanks are arranged on both sides of the sedimentation tank outlet channel; the avoidance area is connected with the water distribution area in the sedimentation area.

As a further option of the short-flow ultrafiltration membrane water purification device, a movable siphon type dredger is provided on the upward flow inclined tube sedimentation tank, and the dredger assembly on the siphon type dredger is removed from the The avoidance area extends into the mud accumulation area at the lower part of the water distribution area.

As a further option of the short-flow ultrafiltration membrane water purification device, a mud discharge tank is provided on the outside of the upward flow inclined tube sedimentation tank and the grid flocculation tank, and the siphon type mud suction machine will suck The sediment is discharged into the mud discharge tank, and the bottom of the grid flocculation tank is provided with a mud discharge pipe, and the grid flocculation tank discharges the sediment into the mud discharge tank through the mud discharge pipe; The above-mentioned mud discharge tank discharges the sediment through the mud discharge main pipe.

As a further optional scheme of the short-flow ultrafiltration membrane water purification device, a general outlet channel is provided between the upward flow inclined tube sedimentation tank and the submerged ultrafiltration membrane tank, and the outlet channel of the sedimentation tank drains the water Drain into the main water outlet channel; the input end of the submerged ultrafiltration membrane pool is connected to the water inlet channel of the membrane workshop, and the main water outlet channel discharges water into the water inlet channel of the membrane workshop; the submerged ultrafiltration membrane pool The output end of the outlet is connected with a water production pipe, and the water production pipe discharges water into the clear water pool.

As a further optional solution of the short-flow ultrafiltration membrane water purification device, the submerged ultrafiltration membrane pool further includes a backwashing system.

As a further optional solution of the short-flow ultrafiltration membrane water purification device, multiple groups of the clear water tanks, flocculation tanks, sedimentation tanks and submerged ultrafiltration membrane tanks are arranged side by side.

The beneficial effects of the present invention are: the short-flow ultrafiltration membrane water purification device can realize the short-flow deep water purification treatment of raw water with the submerged ultrafiltration membrane pool as the core, that is, form a new route of deep water purification treatment , providing more feasible options for new construction or upgrading of waterworks. The so-called short-process deep water purification treatment means that the treatment process is significantly shortened, and the raw water enters the submerged ultrafiltration membrane tank for membrane filtration after proper pretreatment (such as oxidation, adsorption, biochemical, etc.), so as to achieve advanced treatment for improving the quality of effluent water; and Compared with conventional full-process advanced treatment devices, this short-process ultrafiltration membrane water purification device simplifies the sand filtration process, integrates flocculation, sedimentation, ultrafiltration, and clean water tank disinfection, regulation and storage as a whole, significantly reduces the occupied area, and improves the quality of effluent water. It saves energy consumption and facilitates the operation and management of water plants.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a side sectional schematic view of a short flow ultrafiltration membrane water purification device of the present invention;

Fig. 2 is a schematic cross-sectional view of A-A in Fig. 1;

Fig. 3 is a schematic cross-sectional view of B-B in Fig. 2;

Figure 4 is a schematic cross-sectional view of C-C in Figure 3

Fig. 5 is the enlarged schematic view of the upward flow inclined tube sedimentation tank described in Fig. 1;

Fig. 6 is the enlarged schematic view of the upward flow inclined tube sedimentation tank described in Fig. 2;

Fig. 7 is a cross-sectional schematic view of the siphon dredger installed in the upward-flowing inclined tube sedimentation tank;

Fig. 8 is a schematic diagram of a short-flow deep water purification treatment process of the present invention.

In the figure: 1. Clean water tank; 11. Water supply pipe; 2. Mesh flocculation tank; 21. Raw water inlet pipe; 22. Water distribution flower wall; 221. Water distribution hole; 23. Mud discharge pipe; pool; 31, sedimentation area; 311, water distribution area; 312, support structure layer; 313, honeycomb inclined tube layer; 314, clear water area; 315, sump; 316, sedimentation tank outlet channel; Siphon suction mud machine; 4. Submerged ultrafiltration membrane pool; 41. Inlet channel of membrane workshop; 42. Water production pipe; 5. Lifting unit; 51. Lifting frame; 52. Electric single-girder crane; ; 61, mud discharge main pipe; 7, water outlet main channel.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In describing the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer" etc. indicate an orientation or The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as limiting the invention.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

Referring to Figures 1-8, a short-flow ultrafiltration membrane water purification device is shown. The short-flow ultrafiltration membrane water purification device is a multi-layered civil structure that is superimposed and distributed, and it includes a clear water pool 1 located at the bottom. On the upper floor of the clear water pool 1, a flocculation tank, a sedimentation tank, and a submerged ultrafiltration membrane pool 4 are distributed successively in a horizontal arrangement, and a plurality of ultrafiltration membrane modules (not marked in the figure) are arranged in the submerged ultrafiltration membrane pool 4. ). In this embodiment, the flocculation tank adopts the grid flocculation tank 2, and the sedimentation tank adopts the upward flow inclined tube sedimentation tank 3.

Specifically, with reference to Fig. 8, the raw water enters the grid flocculation tank 2, and the grid flocculation tank 2 creates suitable hydraulic conditions to allow particles with flocculation performance to gather in mutual contact to form larger flocs (flocculation) Particles), thereby separating suspended matter and colloidal matter in the raw water; water enters the described upflow inclined tube settling tank 3 afterwards, so that sediment settles at the bottom of the described upward flow inclined tube settling tank 3; water enters the said upflow inclined tube settling tank 3 afterwards The submerged ultrafiltration membrane pool 4 is used for filtration. The submerged ultrafiltration membrane pool 4 itself has the characteristics of small footprint, intensive functions, stable effluent quality, and high degree of automation, and can effectively remove suspended solids and colloids in the water body; Afterwards, the water enters the clear water pool 1 for disinfection, and finally the water is transported to the water supply user through the pressurization facility; Water treatment, that is, a new route of advanced water purification treatment, provides more feasible options for new construction or upgrading of waterworks. The so-called short-process deep water purification treatment means that the treatment process is significantly shortened, and the raw water enters the submerged ultrafiltration membrane pool 4 for membrane filtration after proper pretreatment (such as oxidation, adsorption, biochemical, etc.), so as to realize advanced treatment for improving the quality of effluent water; Compared with conventional full-process advanced treatment devices, this short-process ultrafiltration membrane water purification device simplifies the sand filtration process, integrates flocculation, sedimentation, ultrafiltration, and clean water tank 1 disinfection, regulation and storage as a whole, significantly reduces the occupied area, and improves the water output. Improve water quality, save energy consumption, and facilitate water plant operation and management.

Specifically, the submerged ultrafiltration membrane tank 4 also includes a backwash system (not marked in the figure), through which the particles accumulated on the outer surface of the membrane on the ultrafiltration membrane module are washed away, The transmembrane pressure difference of the ultrafiltration membrane module is reduced again, and the filtration performance of the ultrafiltration membrane module is recovered.

In some specific implementations, referring to FIG. 1 , a lifting unit 5 is provided above the submerged ultrafiltration membrane tank 4 . Specifically, the lifting unit 5 includes a lifting frame 51 arranged above the submerged ultrafiltration membrane pool 4 and an electric single-girder crane 52 arranged on the lifting frame 51 . Wherein, the dry weight of the ultrafiltration membrane module before installation is about 2.5t, and the wet weight after operation is about 4t. The lifting unit 5 can be used for the first lifting and installation of the ultrafiltration membrane module, and can also be used for the The lifting and replacement installation of the filter membrane module after running for a certain period of time; the short-flow ultrafiltration membrane water purification device is a multi-layer civil structure with superimposed distribution, and the submerged ultrafiltration membrane pool 4 is located at a certain height, and the lifting The unit 5 can bring great convenience to the construction and maintenance of the submerged ultrafiltration membrane pool 4 .

With reference to Fig. 1 and Fig. 2, the input end of described grid flocculation tank 2 is connected with raw water inlet pipe 21, and raw water enters described grid flocculation tank 2 from described raw water inlet pipe 21; Referring to Fig. 5 again, described grid A water distribution flower wall 22 is provided between the flocculation tank 2 and the upward flow inclined tube sedimentation tank 3, and a water distribution hole 221 is provided at the lower part of the water distribution flower wall 22, and the water in the grid flocculation tank 2 passes through the water distribution hole 221 enters the bottom of the upward flow inclined tube sedimentation tank 3. Wherein, the water distribution flower wall 22 can evenly distribute the flow on the water inlet section, thereby reducing disturbance to the upward flow inclined tube sedimentation tank 3 .

Referring to Fig. 2, Fig. 5, Fig. 6 and Fig. 7, the upward flow inclined tube sedimentation tank 3 is divided into a sedimentation area 31 and an avoidance area 32 in the horizontal direction, and the innermost part of the sedimentation area 31 is divided into a water distribution area. Area 311, above the water distribution area 311 is provided with a support structure layer 312, above the support structure layer 312 is provided with a honeycomb inclined tube layer 313, above the honeycomb inclined tube layer 313 is divided into a clear water area 314, the clear water area The upper part of 314 is provided with sedimentation tank outlet channel 316, and the two sides of described sedimentation tank outlet channel 316 are arranged with a plurality of sump tanks 315; Collected by the sump 315 in the clear water area 314, and collect to the sedimentation tank outlet channel 316 along the sump 315;

In addition, the avoidance area 32 communicates with the water distribution area 311 in the sedimentation area 31 . A movable siphon dredger 33 is provided on the upward flow inclined tube sedimentation tank 3, and the dredger assembly on the siphon dredger 33 extends from the avoidance area 32 into the lower part of the water distribution area. Mud accumulation area; in other words, the siphon type mud suction machine 33 moves in the said avoidance area, will not be blocked by structures such as the honeycomb inclined tube layer 313, the sump 315, and can gather in the The sediment at the bottom of the distribution area 311 is sucked away.

Referring to Fig. 3 and Fig. 5, the outside of the upward flow inclined tube sedimentation tank 3 and the grid flocculation tank 2 is provided with a mud discharge tank 6, and the siphon type mud suction machine 33 will remove from the empty area 32 The sediment sucked in is discharged into the mud discharge tank 6, and the bottom of the grid flocculation tank 2 is provided with a mud discharge pipe 23, and the grid flocculation tank 2 discharges the sediment to the sludge discharge pipe 23. In the mud discharge tank 6; the mud discharge tank 6 discharges the sediment through the mud discharge main pipe 61.

In some specific embodiments, with reference to Figures 1-4, the number of the clear water tank 1, the grid flocculation tank 2, the upward flow inclined tube sedimentation tank 3 and the submerged ultrafiltration membrane tank 4 are all provided with multiple groups and Arranged side by side; And with reference to Fig. 2, be provided with outlet main channel 7 between described upflow inclined tube sedimentation tank 3 and described submerged ultrafiltration membrane tank 4, described sedimentation tank outlet channel 316 is discharged into the described The main water outlet channel 7; the input end of the submerged ultrafiltration membrane pool 4 is connected to the membrane workshop inlet channel 41, and the water outlet channel 7 discharges water into the membrane workshop inlet channel 41; the submerged ultrafiltration membrane The output end of the tank 4 is connected with a water production pipe 42 , and the water production pipe 42 discharges water into the clear water tank 1 . The main water outlet channel 7 can collect the water discharged from the settling tanks 3 of upward flow inclined tubes, and then evenly distribute water to the multiple sets of submerged ultrafiltration membrane pools 4; in the submerged ultrafiltration membrane pools 4 , the water body to be filtered utilizes the liquid level difference between its liquid level and the water level in the clear water pool 1 of the lower part as power, so that the membrane thread of the ultrafiltration membrane module enters the water production pipe 42 and collects; and the water production pipe 42. The filtered water can be imported into the clear water pool 1; with reference to Fig. 4, multiple diversion walls are provided in the clear water pool 1, so that the water path in the clear water pool 1 is longer and sufficient disinfection time is provided for the water , and finally the water is discharged from the water supply pipe 11.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (10)

1. A short-flow ultrafiltration membrane water purification device, characterized in that, the short-flow ultrafiltration membrane water purification device is a multi-layered civil structure that is superimposed and distributed, and the short-flow ultrafiltration membrane water purification device includes a The lowermost clear water tank, on the upper layer of the clear water tank, is arranged in sequence with a flocculation tank, a sedimentation tank and a submerged ultrafiltration membrane tank, and a plurality of ultrafiltration membrane modules are arranged in the submerged ultrafiltration membrane tank. 2. The short-flow ultrafiltration membrane water purification device according to claim 1, characterized in that a lifting unit is provided above the submerged ultrafiltration membrane pool. 3. short process ultrafiltration membrane water purifier according to claim 2, is characterized in that, described hoisting unit comprises the hoisting frame that is arranged on above described submerged ultrafiltration membrane pond and is arranged on described hoisting frame electric single-girder crane. 4. The short-flow ultrafiltration membrane water purification device according to claim 1, wherein the flocculation tank is a grid flocculation tank, and the input end of the grid flocculation tank is connected with a raw water inlet pipe, and the network A water distribution flower wall is provided between the grid flocculation tank and the upward flow inclined tube sedimentation tank, and the lower part of the water distribution flower wall is provided with a water distribution hole, and the water in the grid flocculation tank enters the upward flow through the water distribution hole. The bottom of the inclined tube sedimentation tank. 5. The short-flow ultrafiltration membrane water purification device according to claim 4, wherein the settling tank is an upward flow inclined tube settling tank, and the upward flow inclined tube settling tank is divided into horizontally The sedimentation area and the avoidance area, the innermost part of the sedimentation area is divided into a water distribution area, a support structure layer is arranged above the water distribution area, a honeycomb inclined pipe layer is arranged above the support structure layer, and the honeycomb inclined pipe layer The upper part of the clear water area is divided into a clear water area, and the upper part of the clear water area is provided with a sedimentation tank outlet channel, and a plurality of water collection tanks are arranged on both sides of the sedimentation tank outlet channel; the avoidance area and the water distribution area in the sedimentation area connected. 6. The short-flow ultrafiltration membrane water purification device according to claim 5, wherein a movable siphon type suction machine is provided on the described upward flow inclined tube sedimentation tank, and the The mud suction assembly extends from the avoidance area into the mud accumulation area at the lower part of the water distribution area. 7. The short flow ultrafiltration membrane water purification device according to claim 6, characterized in that, the outside of the upward flow inclined tube sedimentation tank and the grid flocculation tank is provided with a mud discharge tank, and the siphon type The dredger discharges the sucked sediment into the mud discharge tank, and the bottom of the grid flocculation tank is provided with a mud discharge pipe, and the grid flocculation tank discharges the sediment to the drain through the mud discharge pipe. In the mud tank; the mud discharge tank discharges the sediment through the mud discharge main pipe. 8. The short-flow ultrafiltration membrane water purification device according to claim 6, characterized in that, a total water outlet channel is provided between the upward flow inclined tube sedimentation tank and the submerged ultrafiltration membrane tank, and the sedimentation The water outlet channel of the pool discharges water into the main water outlet channel; the input end of the submerged ultrafiltration membrane pool is connected to the water inlet channel of the membrane workshop, and the main water outlet channel discharges water into the water inlet channel of the membrane workshop; the submerged The output end of the type ultrafiltration membrane pool is connected with a water production pipe, and the water production pipe discharges water into the clear water pool. 9. The short-flow ultrafiltration membrane water purification device according to claim 1, characterized in that, the submerged ultrafiltration membrane pool further comprises a backwashing system. 10. according to claim 1-9 any one described short process ultrafiltration membrane water purification device, it is characterized in that, the quantity of described clear water pond, flocculation pond, settling pond and submerged ultrafiltration membrane pond are all provided with multiple group and set side by side.