CN103523968B - Integrated water purification device - Google Patents

Abstract

An integrated water purification equipment, including a tubular mixer, a mechanical stirring tank, a flocculation tank, a lateral flow inclined plate sedimentation tank, a regulating channel, a dissolved air channel, a carbon sand filter and a water collection channel; the tubular mixer and the mechanical The stirring tank is connected, and the tube mixer is equipped with a dosing port; a water distribution wall is set between the mechanical stirring tank and the flocculation tank; the flocculation tank is connected to the bottom of the inclined plate sedimentation tank; the bottom of the lateral flow inclined tube sedimentation tank is a slope , the bottom of the lateral flow inclined plate sedimentation tank is provided with a mud collection tank; the lateral flow inclined plate sedimentation tank is connected with the regulating channel, the dissolved air channel is connected with the upper part of the carbon sand filter, and the dissolved air channel is provided with a dissolved air release Dissolved air releaser, activated carbon filter layer, quartz sand filter layer and backwash drainage pipe are arranged in sequence from bottom to top in the carbon sand filter; the carbon sand filter is connected with the bottom of the water collection channel. The equipment has a compact structure, a small footprint, and simple and convenient operation and control. It can effectively remove pollutants in water, with good purification effect and high stability.

Description

An integrated water purification device

technical field

The invention relates to an integrated equipment for drinking water treatment, which belongs to the technical field of drinking water treatment.

Background technique

With the continuous development of science and technology, people's development and utilization of water resources have reached an unprecedented height. At the same time, the degree of pollution of water sources is increasing day by day, and the number of pollution sources is gradually increasing. With the continuous improvement of people's lives, the requirements for drinking water quality are getting higher and higher, which makes water supply treatment face great challenges. At present, my country's water supply plants have a wide range of water supply and good water quality, but there are still some remote areas such as towns and rural areas that are not within the water supply area of the water plant. The safety of drinking water for residents in these areas cannot be guaranteed, and there are serious hidden dangers. Moreover, land resources are scarce in our country, and traditional water supply plants have long process flow, complicated process, high energy consumption and large floor area.

Most of the existing integrated water purification equipment combines the traditional three water purification units of coagulation, sedimentation and filtration in the same equipment, and is equipped with dosing and disinfection. Although it occupies a small area, it is suitable for low turbidity and high algae water. The treatment effect is not ideal, and the water body to be treated has limitations, so it cannot be widely applied. For example, in the "Emergency Vehicle Water Purification Equipment" disclosed in CN202576112U, the equipment is assembled in an independent compartment of the carriage, and the equipment includes a raw water submersible pump connected in sequence through pipelines, an inclined tube sedimentation tank, vortex mixing reaction-micro-flocculation direct contact filtration device, living water tank, primary precision filter, activated carbon filter, secondary precision filter, primary ultraviolet sterilizer, direct drinking water tank and secondary ultraviolet sterilizer, and the equipment also includes a dosing machine.

Contents of the invention

Aiming at the problems existing in the existing drinking water treatment technology, the invention provides an integrated water purification device capable of effectively removing various pollutants in the water body, having a wide application range, good treatment effect and high stability.

The integrated water purification equipment of the present invention adopts the following technical solutions to realize:

The integrated water purification equipment includes sequentially connected tubular mixers, mechanical stirring tanks, flocculation tanks, lateral flow inclined plate sedimentation tanks, regulating channels, dissolved air channels, carbon sand filters and water collection channels; tubular mixers It is connected with the mechanical stirring tank, and the tube mixer is equipped with a dosing port; there is an agitator in the mechanical stirring tank, and a water distribution wall is set between the mechanical stirring tank and the flocculation tank, and the two are connected through the water distribution wall; the flocculation tank is connected to the lateral There is a blocking wall between the inclined plate sedimentation tanks, and the flocculation tank and the inclined plate sedimentation tank are connected through the bottom of the blocking wall; the bottom of the lateral flow inclined tube sedimentation tank is a slope, and the slope faces the flocculation tank, and the lateral flow inclined plate The bottom of the sedimentation tank is provided with a mud collection tank, and a mud discharge pipe is arranged on the mud collection tank. The inclined plate in the lateral flow inclined plate sedimentation tank is 60 degrees to the horizontal plane; the lateral flow inclined plate sedimentation tank is connected with the regulating channel, and the adjustment The upper part of the canal is provided with a decanter for the regulating canal, and the regulating canal and the dissolved air canal are connected through the decanter, and the dissolved air canal is provided with a dissolved air release device; the dissolved air canal is connected with the upper part of the carbon sand filter, and the dissolved air canal The water body in the air channel enters the carbon sand filter through overflow; the carbon sand filter is equipped with a dissolved air releaser, an activated carbon filter layer, a quartz sand filter layer and a backwash drainage pipe in sequence from bottom to top. The activated carbon filter material is filled, and the quartz sand filter layer is filled with quartz sand filter material; the carbon sand filter tank is connected to the bottom of the water collection channel, the upper part of the water collection channel is provided with a water collection channel decanter, and the lower part of the water collection channel is equipped with an outlet pipe and a reverse Rinse the water inlet pipe, the outlet pipe is connected with the decanter of the water collection channel, and the backwash water inlet pipe is equipped with a vent pipe;

Add coagulant into the tubular mixer through the dosing port. The raw water and coagulant are fully mixed through the tubular mixer and then enter the mechanical stirring tank. Alum flowers are formed by stirring. The mechanical stirring tank is only set up in one grid. The velocity gradient G of the medium water flow changes. According to the position of the stirring paddle, the value of the velocity gradient G near the stirring paddle is large, and the farther away from the stirring paddle, the smaller the value of the velocity gradient G is. In the mechanical stirring tank, the water flow velocity gradually The G value also gradually decreases along the process, which is conducive to the formation of large and dense alum flowers; the alum flowers enter the flocculation tank for flocculation; the flocculation tank and the lateral flow inclined tube sedimentation tank are connected at the bottom, which reduces the impact of influent on The impact of the wall of the flocculation tank; the lateral flow inclined tube sedimentation tank solves the problem of mud-water separation. The bottom of the lateral flow inclined tube sedimentation tank slopes towards the flocculation tank, and the sludge returns to the flocculation tank by itself, while preventing the side flow inclined tube from settling The sludge dead zone is formed in the tank, and the clear water can be collected in the regulating channel effectively and stably, while most of the sludge is collected in the sludge collection tank at the bottom of the lateral flow inclined tube sedimentation tank, and is discharged from the sludge discharge pipe on the sludge collection tank. The sludge returns to the flocculation tank and mixes with the influent water. The return of the sludge can promote clarification. The alum flower particles in the sludge can absorb the suspended solids in the water and the sediments generated by the reaction, so that the suspended solids and sediments can be separated from the water and reacted. The generated sediment acts as the core of crystallization, which promotes the gradual growth of the sediment and accelerates the sedimentation and separation; the water continues to flow to the regulating channel, and the water in the regulating channel enters the dissolved air channel from the regulating channel decanter, and the dissolved air channel The water enters the carbon sand filter by way of overflow, which prevents the bursting of air bubbles caused by falling water; the activated carbon filter material in the carbon sand filter simultaneously performs filtration, adsorption and biological functions; the quartz sand filter material first acts as a supporting layer to avoid Second, during the operation of activated carbon, due to the shedding of the biofilm on the surface of the activated carbon and the leakage of non-biological particles, the water quality of the effluent is affected. Setting the quartz sand filter material can effectively ensure the water quality of the effluent water. It can also provide good attachment conditions for the survival of microorganisms and play a role in biodegradation; after being filtered and adsorbed by the activated carbon filter layer and the quartz sand filter layer, the water flows into the catchment canal.

The invention integrates pipeline mixing, mechanical flocculation, inclined plate sedimentation, air flotation, carbon sand adsorption filtration and other technological processes ingeniously, has a compact structure, a small footprint, and simple and convenient operation and control, effectively removes pollutants in water, and has a high purification effect. Well, high stability.

Description of drawings

Fig. 1 is a schematic plan view of the integrated water purification equipment 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. 1 .

Fig. 4 is a schematic cross-sectional view of C-C in Fig. 1 .

Fig. 5 is a schematic structural view of the blocking wall in the present invention.

In the figure: 1. Tubular mixer, 2. Mechanical stirring tank, 3. Flocculation tank, 4. Lateral flow inclined plate sedimentation tank, 5. Adjusting channel, 6. Dissolved air channel, 7. Carbon sand filter, 8 , water collection channel, 9, agitator, 10, water distribution wall, 11, blocking wall, 12, inclined plate, 13, sludge collection tank, 14, decanter, 15, dissolved air release device, 16, activated carbon filter layer, 17, quartz sand filter layer, 18, water inlet pipe, 19, dosing port, 20, water outlet pipe, 21, mud discharge pipe, 22, vent pipe, 23, backwash water inlet pipe, 24, backwash drain pipe.

Detailed ways

As shown in Figure 1 and Figure 2, the integrated water purification equipment of the present invention mainly includes a tubular mixer 1, a mechanical stirring tank 2, a flocculation tank 3, a lateral flow inclined plate sedimentation tank 4, a regulating channel 5, Dissolved air channel 6, carbon sand filter tank 7 and water collection channel 8. One end of the tube mixer 1 is connected to the water inlet pipe 18, and the other end is connected to the mechanical stirring tank 2. The tube mixer 1 is provided with a dosing port 19 through which coagulant is added into the tube mixer 1. A stirrer 9 is provided in the mechanical stirring tank 2 , and a water distribution wall 10 is provided between the mechanical stirring tank 2 and the flocculation tank 3 , and the two are connected through the water distribution wall 10 . A blocking wall 11 is arranged between the flocculation tank 3 and the lateral flow inclined plate sedimentation tank 4, and the flocculation tank 3 and the inclined plate sedimentation tank 4 are connected through the bottom of the blocking wall 11, as shown in Figure 5, the blocking wall 11 is I-shaped, with notches on the upper and lower parts. The flocculation tank 3 and the lateral flow inclined tube sedimentation tank 4 are connected at the bottom, which can reduce the impact of influent water on the wall of the flocculation tank 3. The bottom surface of the lateral flow inclined tube sedimentation tank 4 is a slope surface with a certain slope. The flocculation tank 3, so the sludge can flow back to the flocculation tank 3 by itself, and at the same time, it can prevent the sludge dead zone from forming in the lateral flow inclined tube sedimentation tank 4. A mud collection tank 13 is provided at the bottom of the lateral flow inclined plate sedimentation tank 4, and a mud discharge pipe 21 is provided on the mud collection tank 13. As shown in Figure 3, the inclined plate 12 in the lateral flow inclined plate sedimentation tank is 60° to the horizontal plane. The side flow inclined plate sedimentation tank 4 is connected with the regulating channel 5, and the upper part of the regulating channel 5 is provided with a decanter 14, and the regulating channel 5 and the dissolved gas channel 6 are connected through the decanter 14, and the dissolved gas channel 6 is provided with a Gas releaser 15. The dissolved air channel 6 communicates with the upper part of the carbon sand filter 7, and the water body in the dissolved air channel 6 enters the carbon sand filter 7 by way of overflow, which can prevent bubbles from collapsing caused by falling water. As shown in FIG. 4 , a dissolved air releaser 15 , a quartz sand filter layer 17 , an activated carbon filter layer 16 and a backwash drain pipe 24 are sequentially arranged in the carbon sand filter tank 7 from bottom to top. Activated carbon filter layer 16 is filled with activated carbon filter material, and quartz sand filter layer 17 is filled with quartz sand filter material. The activated carbon filter material plays the role of filtration, adsorption and biology at the same time; the quartz sand filter material can firstly act as a supporting layer to prevent the leakage of carbon chips; Leakage will affect the water quality of the effluent. Setting up a quartz sand cushion can effectively ensure the quality of the effluent. Finally, the rough surface of the quartz sand filter material can also provide good attachment conditions for the survival of microorganisms and play a certain role in biodegradation. The carbon sand filter 7 undergoes the air flotation process on the water surface, and the filtration and adsorption process under the water surface. It is the integration of conventional treatment and advanced treatment, which can save investment and operating costs.

The water overflows into the carbon sand filter 7 from the dissolved air channel 6, and after filtering and adsorption by the activated carbon filter layer 16 and the quartz sand filter layer 17, the filtered water flows into the water collection channel 8, and the upper part of the water collection channel 8 is also provided with a decanter Water container, the collected water is discharged by the water outlet pipe 12 by this water container. The bottom of the water collecting channel 8 is provided with an outlet pipe 20 and a backwashing water inlet pipe 23, and the backwashing water inlet pipe 23 is provided with an emptying pipe 22, and the water outlet pipe 20 communicates with the decanter in the water collecting channel.

The stirrer 9 adopts a vertical shaft type, and the water is stirred by using a motor to drive the stirrer. There is only one grid in the mechanical stirring tank 2. In this grid, the water flow velocity gradient G changes. According to the position of the stirring paddle, the velocity gradient G value near the stirring paddle is larger, and the farther away from the stirring paddle, the velocity gradient G value is larger. smaller. In the mechanical stirring tank 2, the water flow velocity gradually decreases along the process, and the G value also gradually decreases along the process, which is conducive to the formation of large and dense alum flowers.

The inclined plate sedimentation tank 4 adopts lateral flow. Compared with the opposite flow, the direction of mud flow and water flow is 90° during the sedimentation process, which is helpful for the mud to slide down; compared with the same flow, it can well solve the problem of mud-water separation. The clear water can be effectively and stably collected in the regulating channel 5, and most of the sludge is collected in the sludge collection tank 13 and discharged from the sludge discharge pipe 21, and a small amount of sludge is returned to the flocculation tank 3 and mixed with the incoming water. Sludge reflux can promote clarification, and the alum flower particles in the sludge are a kind of adsorbent, which can absorb suspended solids in water and precipitates generated by reaction, so as to separate them from water. At the same time, the precipitate generated by the reaction acts as a crystallization core, which promotes the gradual growth of the sediment and accelerates the sedimentation and separation.

Raw water enters the tubular mixer 1 through the water inlet pipe 18, adds coagulant into the tubular mixer 1 through the dosing port 19, fully mixes through the tubular mixer 1, first enters the mechanical stirring tank 2, and is stirred by the agitator 9 Alum flowers are formed, enter the flocculation tank 3 for flocculation, and then pass through the lateral flow inclined plate sedimentation tank 4, and the impurity particles sink to the bottom of the inclined plate sedimentation tank 4 to form sludge. The settled sludge is mainly collected in the mud accumulation area and discharged, and a small part Return to mechanically stirred tank 2. The water continues to flow to the regulating channel 5, and the water in the regulating channel 5 enters the air-dissolving channel 6 from the decanter 14, and the water dissolves the air in the air-dissolving channel 6 and then enters the carbon sand filter 7, and the scum floats on the carbon sand filter 7 of the water. In air flotation, the dissolved air releaser 15 releases microbubbles into the dissolved air channel 6. After the filtered water enters, the microbubbles adhere to the flocs, thereby realizing the forced floating of the flocs and achieving solid-liquid separation. Air flotation mainly removes suspended solids, oils, algae and other pollutants in the water body. After air flotation, filtration and adsorption treatment, the effluent is obtained.

When the activated carbon filter layer 16 and the quartz sand filter layer 17 need to be backwashed, the water in the carbon sand filter tank 7 is first vented through the vent pipe 22, and then backwashed. When the backwashing was carried out, the valves on the backwashing water inlet pipe 23 and the backwashing drain pipe 24 were opened, the valve on the vent pipe 22 was closed, and the backwashing water entered the carbon sand filter tank 7 by the backwashing water inlet pipe 23, and activated carbon filter The layer 16 and the quartz sand filter layer 17 are backwashed, and the backwash water is discharged from the backwash drain pipe 24.

Claims (1)

1. An integrated water purification equipment, comprising sequentially connected tubular mixers, mechanical stirring tanks, flocculation tanks, lateral flow inclined plate sedimentation tanks, regulating channels, dissolved air channels, carbon sand filters and water collection channels; The characteristics are: the tube mixer is connected with the mechanical stirring tank, and the tube mixer is equipped with a dosing port; the mechanical stirring tank is equipped with an agitator, and a water distribution wall is set between the mechanical stirring tank and the flocculation tank, and the two pass through the water distribution wall. Connected; there is a blocking wall between the flocculation tank and the lateral flow inclined plate sedimentation tank, and the flocculation tank and the inclined plate sedimentation tank are connected through the bottom of the blocking wall; the bottom surface of the lateral flow inclined tube sedimentation tank is a slope surface, and the slope direction The bottom of the lateral flow inclined plate sedimentation tank is provided with a mud collection tank, and a mud discharge pipe is arranged on the mud collection tank. The inclined plate in the lateral flow inclined plate sedimentation tank is 60 degrees to the horizontal plane; the lateral flow inclined plate sedimentation tank The tank is connected with the regulating channel, and the upper part of the regulating channel is provided with a decanter for the regulating channel, and the regulating channel and the dissolved air channel are connected through the decanter, and the dissolved air channel is provided with a dissolved air release device; the dissolved air channel and the carbon sand filter The upper part of the pool is connected, and the water in the dissolved air channel enters the carbon sand filter by overflow; the carbon sand filter is equipped with a dissolved air releaser, a quartz sand filter layer, an activated carbon filter layer and a backwashing filter in sequence from bottom to top. The drainage pipe is filled with activated carbon filter material in the activated carbon filter layer, and filled with quartz sand filter material in the quartz sand filter layer; The lower part is provided with a water outlet pipe and a backwash water inlet pipe, the water outlet pipe is connected with the water collection canal decanter, and the backwash water inlet pipe is provided with a vent pipe; Add coagulant into the tubular mixer through the dosing port. The raw water and coagulant are fully mixed through the tubular mixer and then enter the mechanical stirring tank. Alum flowers are formed by stirring. The mechanical stirring tank is only set up in one grid. The velocity gradient G of the medium water flow changes. According to the position of the stirring paddle, the value of the velocity gradient G near the stirring paddle is large, and the farther away from the stirring paddle, the smaller the value of the velocity gradient G is. In the mechanical stirring tank, the water flow velocity gradually The G value also gradually decreases along the process, which is conducive to the formation of large and dense alum flowers; the alum flowers enter the flocculation tank for flocculation; the flocculation tank and the lateral flow inclined tube sedimentation tank are connected at the bottom, which reduces the impact of influent on The impact of the wall of the flocculation tank; the lateral flow inclined tube sedimentation tank solves the problem of mud-water separation. The bottom of the lateral flow inclined tube sedimentation tank slopes towards the flocculation tank, and the sludge returns to the flocculation tank by itself, while preventing the side flow inclined tube from settling The sludge dead zone is formed in the tank, and the clear water can be collected in the regulating channel effectively and stably, while most of the sludge is collected in the sludge collection tank at the bottom of the lateral flow inclined tube sedimentation tank, and is discharged from the sludge discharge pipe on the sludge collection tank. The sludge returns to the flocculation tank and mixes with the influent water. The return of the sludge can promote clarification. The alum flower particles in the sludge can absorb the suspended solids in the water and the sediments generated by the reaction, so that the suspended solids and sediments can be separated from the water and reacted. The generated sediment acts as the core of crystallization, which promotes the gradual growth of the sediment and accelerates the sedimentation and separation; the water continues to flow to the regulating channel, and the water in the regulating channel enters the dissolved air channel from the regulating channel decanter, and the dissolved air channel The water enters the carbon sand filter by way of overflow, which prevents the bursting of air bubbles caused by falling water; the activated carbon filter material in the carbon sand filter simultaneously performs filtration, adsorption and biological functions; the quartz sand filter material first acts as a supporting layer to avoid Second, during the operation of activated carbon, due to the shedding of the biofilm on the surface of the activated carbon and the leakage of non-biological particles, the water quality of the effluent is affected. Setting the quartz sand filter material can effectively ensure the water quality of the effluent water. It can also provide good attachment conditions for the survival of microorganisms and play a role in biodegradation; after being filtered and adsorbed by the activated carbon filter layer and the quartz sand filter layer, the water flows into the catchment canal.