CN102276114B - Water treatment equipment - Google Patents

Abstract

The invention provides a water treatment device, which is used to solve the problem that the water quality of the purified water easily exceeds the standard due to the unstable hydraulic load when the existing water purification device is in use. The water treatment equipment includes: a water supply device for storing water and discharging the water at a preset flow rate; a water purification device for purifying the water discharged from the water supply device and discharging the purified water. In the water treatment equipment, the water supply device provides the water to be purified to the water purification device according to the preset flow rate. Compared with the prior art, the water supply device overcomes the problem that the existing water purification equipment relies on the direct water supply of the water pump to easily cause the water purification equipment to be degraded. The water flow rate is too large, or the hydraulic load is unstable due to the water level difference in the water tank. The water flow rate of the water purification device in the present invention can not only be controlled according to the needs, but also relatively stable, which can ensure that the water quality of the purified water is not high. Exceeded the standard.

Description

A kind of water treatment equipment

technical field

The invention relates to the technical field of water purification, in particular to water treatment equipment.

Background technique

At present, my country's urban centralized drinking water treatment technology is developing rapidly, and urban drinking water basically meets the standards stipulated by the state, while rural decentralized drinking water treatment technology has been neglected. The safety of drinking water in rural areas is directly related to the health and life safety of farmers and the stable development of rural society. It is an important task in the construction of a new socialist countryside.

There are some water purification equipment for drinking water in the prior art, and its water supply device is to arrange a water outlet at the bottom of the water tank, through which the water in the water tank is guided to the water purification equipment. Existing water supply devices rely on the water head pressure difference in the water tank to achieve water outlet. Since the water head pressure difference decreases with the gradual outflow of water in the water tank, the flow rate of the water outlet gradually decreases. The result of this phenomenon is that the flow rate of the outlet water gradually decreases with the decrease of the water level in the water supply device, which makes the hydraulic load of the water intake of the water purification equipment unstable, especially in the initial stage. The water quality of the purified water exceeds the standard. In addition, the existing water purification equipment can also rely on the water pump to directly supply water, but this will easily lead to poor control of the water inlet flow rate of the water purification equipment, often causing the water inlet flow rate of the water purification equipment to be too large, and it is easy to cause the water quality of the purified water to exceed the standard .

Some water purification equipment in the prior art also has the disadvantage of requiring manual operation. Due to the limitation of the knowledge level of farmers in most rural areas of our country, although some water purification equipment has a better treatment effect, the operation is complicated and difficult for farmers to master.

Contents of the invention

The embodiment of the present invention provides a water treatment device, which is used to solve the problem that the hydraulic load of the water inlet is unstable when the existing water purification device is in use, and the water quality of the purified water tends to exceed the standard.

An embodiment of the present invention provides a water treatment device, comprising:

water supply means for storing water and discharging said water at a preset flow rate;

The water purification device is used to purify the water discharged from the water supply device and discharge the purified water.

The water supply device includes:

an elevated water tank for storing water and discharging said water;

A constant flow device is used to control the drainage speed of the high-level water tank at the preset flow rate.

Described water treatment equipment also includes:

a filter for filtering water entering said water supply;

The filter net is arranged in the filter and is used for intercepting suspended matter in the water.

The bottom of the elevated water tank is also provided with a mud discharge port; and/or

The high-level water tank is in the shape of an inverted cone.

The galvanostat includes:

The container is placed in the high-level water tank, and the top opening and the bottom of the container are interspersed with a first tube and a second tube;

The first pipe is used to guide the water in the high-level water tank into the container when the water level in the high-level water tank is higher than the water level in the container;

The second pipe communicates with the water outlet of the high-level water tank, and is used to guide the water in the container to the water outlet of the high-level water tank at the preset flow rate.

The water treatment equipment also includes:

a pump for guiding the water in the water source to the elevated water tank;

a distribution box for turning on or off the pump according to an instruction input by a user;

The water level measuring device is used to measure the water level in the high-level water tank, and when the water level reaches a first preset value, it sends a shutdown command, and when the water level reaches a second preset value, it sends a start command, and the first preset value The set value is greater than the second preset value;

The distribution box is further configured to receive the startup instruction or the shutdown instruction, and turn off the pump when receiving the shutdown instruction, and turn on the pump when receiving the startup instruction.

The water purification device is a biological slow filtration water purification device, and the biological slow filtration water purification device includes:

The filter bucket has a water inlet and a water outlet, and the water inlet of the filter bucket communicates with the water outlet of the water supply device;

At least one layer of filter material is located in the filter bucket;

Microbial mucous membrane attached to the upper surface of the top filter material layer;

Wherein, the water inlet of the filter bucket is located above the microbial mucous membrane, and the water outlet is located below the filter material layer.

The biological slow filter water purification device also includes:

The water distributor is used for uniform water distribution and is arranged between the water inlet of the filter barrel and the microbial mucous membrane.

A filter material is also arranged in the water distributor.

The biological slow filter water purification device also includes:

The supporting layer is used to prevent the filter material in the filter material layer from blocking the water outlet of the filter bucket, and is arranged below the filter material layer, and the water outlet of the filter bucket is located in the supporting layer; or

The porous plate is used to carry the filter material layer, so that a water storage space is formed between the filter material layer and the bottom of the filter bucket, so that the water passing through the filter material layer enters the water storage space and prevents the filter material from The filter material in the layer falls into the water storage space, and is arranged under the filter material layer, and the water outlet of the filter bucket communicates with the water storage space.

In the water treatment equipment provided by the embodiment of the present invention, the water supply device provides the water to be purified to the water purification device at a preset flow rate. Compared with the prior art, the water supply device overcomes the problem that the existing water purification equipment relies on the water pump to directly supply water It is easy to cause the water inlet flow rate of the water purification equipment to be too large, or the hydraulic load is unstable due to the water level difference in the water tank. The water inlet flow rate of the water purification device in the present invention can not only be controlled according to needs, but also relatively stable, and can Ensure that the water quality of the purified water does not exceed the standard. When the water purification device is a biological slow filtration water purification device, the microbial mucous film formed on the surface of the top filter material under low flow rate conditions is used to further improve the removal effect of heavy metals and toxic organic substances in the water body. When the water purification device is a biological slow filtration water purification device, the microbial mucous film formed on the surface of the top filter material under low flow rate conditions is used to further improve the removal effect of heavy metals and toxic organic substances in the water body.

Description of drawings

Fig. 1 is the structural representation of a kind of water treatment equipment in the embodiment of the present invention;

Fig. 2 is the structural representation of another kind of water treatment equipment in the embodiment of the present invention;

FIG. 3 is a schematic structural view of a current constant device in an embodiment of the present invention;

Fig. 4 is the structural representation of a kind of water purifying device in the embodiment of the present invention;

Fig. 5 is the structural representation of another kind of water purifying device in the embodiment of the present invention;

6 is a schematic structural view of another water purification device in an embodiment of the present invention;

Fig. 7 is a working flow diagram of a water treatment device in an embodiment of the present invention;

FIG. 8 is a specific flowchart of step S75 in FIG. 7 .

Detailed ways

In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

As shown in Figure 1, an embodiment of the present invention provides a water treatment device, including:

A water supply unit for storing water and discharging it at a preset flow rate;

The water purification device is used to purify the water discharged from the water supply device and discharge the purified water.

Among them, the preset low flow rate can be set according to the needs of the water purification device and users.

When the water supply device discharges the water to be purified to the water purification device according to the preset flow rate, first, the preset flow rate should ensure that the speed of the water to be purified provided by the water supply device is not greater than the maximum flow rate of the purified water discharged by the water purification device, and When the water purification device is shown in Figure 4, when a microbial mucous membrane is formed on the surface of the first filter material layer, the preset flow rate must also meet the requirements of not disturbing the filter material layer; secondly, the preset flow rate can also be set according to user needs, For example, when the water consumption of the user is small, the preset flow rate can be adjusted to a small value. In this way, the service life of the filter material in the filter tank can be extended while meeting the water quality and quantity requirements of the water user.

In the water treatment equipment provided by the embodiment of the present invention, the water supply device provides the water to be purified to the water purification device at a preset flow rate. Compared with the prior art, the water supply device overcomes the problem that the existing water purification equipment relies on the water pump to directly supply water It is easy to cause the water inlet flow rate of the water purification equipment to be too large, or the hydraulic load is unstable due to the water level difference in the water tank. The water inlet flow rate of the water purification device in the present invention can not only be controlled according to needs, but also relatively stable, and can Ensure that the water quality of the purified water does not exceed the standard.

As shown in Figure 2, the above-mentioned water supply device may include:

High level water tank, used to store water and discharge water;

A flow regulator to control the rate at which the head tank drains to a preset flow rate.

Preferably, as shown in FIG. 2 , the bottom of the high-level water tank is also provided with a mud discharge port for discharging the dirt such as particles and mud deposited on the bottom of the high-level water tank. The high-level water tank can be in the shape of an inverted cone, so that suspended matter such as particles and soil in the high-level water tank can settle at the bottom, and can be easily collected and discharged through the mud discharge port. A transparent pipe can also be communicated with on the high level water tank, is used for making water level indicator, and when high level water tank adopts transparent material to make, water level indicator can be omitted.

The above-mentioned water treatment equipment may also include:

The filter is used to filter the water entering the water supply device, and the filter is provided with a filter mesh to intercept the suspended matter in the water (Figure 2 shows the position of the filter by taking the water supply device including the high-level water tank and the constant flow device as an example) .

The function of the filter is to initially intercept the large particle pollutants in the water to be purified. The filter includes a water inlet, a water outlet and a filter screen between the water inlet and the water outlet. After the filter screen is blocked, it can be taken out and cleaned with a brush. It can be reused. If the filter screen is broken, a new filter screen can also be replaced , more convenient to use. The water flowing out from the pump enters the water supply device after preliminary filtration by the filter with the help of the power of the pump, which reduces the filtering burden of the subsequent water purification device and reduces the blockage of the filter material in the water purification device.

Preferably, as shown in Figure 3, the above-mentioned constant current device may include:

The container is placed in the high-level water tank, the top is open, and the bottom is interspersed with a first pipe and a second pipe;

The first pipe is used to guide the water in the high-level water tank into the container when the water level in the high-level water tank is higher than the water level in the container;

The second pipe communicates with the water outlet of the high-level water tank and is used to guide the water in the container to the water outlet of the high-level water tank at the preset flow rate.

The working principle of the above-mentioned constant flow device is to use the water level difference inside and outside the container (that is, the water level difference between the container and the high-level water tank, and the water level in the high-level water tank is higher than the water level in the container), to keep the water level difference constant, then the water inlet flow rate of the first pipe Constant, and then the drainage flow rate of the second pipe is constant. By adjusting the water level difference inside and outside the container, the purpose of controlling the drainage speed of the high-level water tank at the preset flow rate can be achieved. Adjusting the water level difference inside and outside the container can be achieved in the following ways: put some heavy objects (such as stones, etc.) Heavy objects increase (decrease) the water level difference so that the drainage speed of the high-level water tank meets the requirements. In addition, under the condition that a certain weight is placed in the container, by raising or lowering the height of the first pipe in the container, the adjustment of reducing or increasing the drainage speed of the container can also be realized. The introduction of the constant flow device overcomes the problems of excessive flow rate caused by the direct water supply of the existing water treatment equipment by the pump, or unstable hydraulic load caused by the water level difference in the high-level water tank, and realizes the function of low-speed and constant water supply.

As shown in Figure 2 again, the above-mentioned water treatment equipment can also include:

A pump for directing water from the source to the elevated water tank;

A distribution box for switching the pump on or off according to commands entered by the user;

The water level measuring device is used to measure the water level in the high-level water tank. When the water level reaches the first preset value, it sends a shutdown command, and when the water level reaches the second preset value, it sends a start command. The first preset value is greater than the second preset value. ;

The distribution box is also used to receive a startup command or a shutdown command, and shut down the pump when receiving the shutdown command, and turn on the pump when receiving the startup command.

Specifically, a gear switch can be configured on the power distribution box, and the leftmost gear of the gear switch is automatic, that is, the above-mentioned water level measuring device and the power distribution box work together, so that when the water level in the high-level water tank reaches the first preset value Turn off the pump, and turn on the pump when the water level in the high-level water tank reaches the second preset value; the middle gear of the gear switch is stop, that is, the user can turn off the pump by turning the gear switch to the middle gear; the gear switch The rightmost gear is manual, that is, the user can force the pump to be turned on by turning the gear switch to the rightmost gear. For example, when the family needs a large amount of water such as washing clothes and feeding livestock, the user can directly turn on the pump at the water outlet of the high-level water tank. Receive water without going through the treatment of the water purification device. In addition, a running indicator light and a stop indicator light can also be set on the distribution box, so that users can clearly understand the working status of the water treatment equipment.

The water level measuring device can be implemented as an electric water level gauge. At this time, a weak voltage can be separated from the distribution box for power supply to the water level gauge. The electric water level gauge can include two probes of different lengths. The long probe is closer to the bottom of the high water tank. When the water level drops to the end of the long probe, the distribution box turns on the pump; the short probe is closer to the top of the high water tank. , when the water level rises to the end of the short probe, the distribution box turns off the pump, thus realizing automatic water intake. Electric water level gauge can adopt float switch or mechanical structure.

As shown in Figure 4, the above-mentioned water purification device can be a biological slow filtration water purification device, and the biological slow filtration water purification device can include:

The filter bucket has a water inlet and a water outlet, and the water inlet of the filter bucket communicates with the water outlet of the water supply device;

At least one layer of filter material layer is located in the filter bucket;

Microbial mucous membrane attached to the upper surface of the top filter material layer;

Wherein, the water inlet of the filter bucket is located above the microbial mucous membrane, and the water outlet is located below the filter material layer.

The shape of the above-mentioned filter bucket is not limited, usually a cylinder or a cuboid. In order to ensure uniform water flow, the cross-sectional area of the upper part of the filter bucket is slightly larger than the bottom; the water inlet of the filter bucket is located at the upper end of the filter bucket, and the water outlet of the filter bucket is located at the The lower end of the barrel; during the purification process, the water discharged from the water supply device enters the filter barrel through the water inlet of the filter barrel. The nozzle is discharged.

In addition, as shown in Figure 4, the water outlet can be connected to the elbow and straight pipe outside the filter barrel, so that the outlet water can be led to about 15 cm above the filter material to flow out, so as to ensure the depth of the upper layer above the filter material, and ensure the formation of microbial mucous membranes and microorganisms. survive. Wherein, the straight pipe and the elbow connected with the water outlet of the filter barrel may not be provided with a water flow control valve.

When the flow rate of the water entering the filter barrel is slow, the organic matter and minerals in the water can provide nutrients for the growth and reproduction of microorganisms. Therefore, there are a large number of microbial groups on the surface of the filter layer, and the microbial groups are attached to the filter material After a period of growth, a stable and mature microbial mucosa can be formed. There are a large number of organisms such as algae and bacteria in the microbial mucous membrane. In addition, there are protozoa in the upper water above the filter material. Protozoa and algae can effectively swallow bacteria and viruses in the water, and bacteria and other microorganisms can use their own metabolic processes to degrade The organic matter in the water can also remove the ammonia nitrogen in the water through the nitrification reaction, the microbiological mucosa has small gaps, and can also intercept the suspended impurities in the water, effectively disinfecting and filtering the water to be purified.

The water after the biochemical treatment of the microbial mucosa can be further physically adsorbed and filtered through the filter material layer to further reduce the turbidity of the water and improve the purification effect.

Through the above-mentioned biological slow filtration water purification device, there is no need to set up special disinfection facilities, nor do you need to add any chemicals. Only the microbial mucous membrane attached to the upper surface of the top filter material layer is used to disinfect and biochemically react the water to be purified. The disinfection process is reduced, the cost is saved, and it is easily accepted by farmers; at the same time, the water to be purified is further filtered through the physical adsorption of the filter material layer. In addition, the above-mentioned biological slow filtration water purification device has a simple structure and low installation and operation costs , very suitable for the purification of drinking water and domestic water in rural areas.

It can be understood that the greater the thickness of the filter material layer set in the above-mentioned biological slow filtration water purification device, the more types of filter materials (such as the use of different filter material particle sizes, coconut shell, activated carbon and other filter materials with different filter properties) ), the better the purification effect of the biological slow filtration water purification device. Of course, in order to save the cost of the biological slow filtration water purification device and ensure the filtration rate of the biological slow filtration water purification device, it is necessary to choose a reasonable filter material layer thickness and filter material type.

Normally, the filter material in the top filter material layer is a filter material with a finer particle size. The finer the particle size of the filter material, the stronger its purification ability, so it can effectively ensure the cleanliness of the purified water. In addition, the filter material The finer the particle size, the easier it is to form a microbial mucous membrane; of course, it is not possible to use a filter material with a particle size that is too fine to prevent water from passing through; considering the permeability of the biological slow filtration water purification device, the flow along the water The particle size of the filter materials in different filter material layers can be arranged from fine to coarse. For example, the biological slow filtration water purification device includes four layers of filter material. It is assumed that the filter material of the top layer of filter material is river sand with a finer particle size. Of course, quartz sand can also be used. Since river sand is more common in rural areas, it is convenient and The cost is low, therefore, under normal circumstances, river sand is used as the filter material of the top filter layer; the filter material of the second filter layer is zeolite; the filter material of the third filter layer is also zeolite, but the third layer The particle size of the zeolite in the filter material layer is greater than that of the zeolite in the second layer of filter material layer; the fourth layer of filter material layer can be river sand with a relatively coarse particle size. Of course, the above-mentioned filter material layer can also be three layers, five layers or other layers, and the filter material in the filter material layer can also be other different types of filter materials, such as quartz sand, activated carbon, etc. In the specific implementation process, it can be According to the local filter material resources, choose a lower-cost solution for implementation.

Through the biological slow filtration water purification device provided in the above embodiments, multiple layers or different types of filter material layers can be used to strengthen the physical adsorption and filtration of the water to be purified.

In the above embodiment, when the water to be purified enters the filter bucket, if the water flow is not uniform or the water flow is too large, it may disturb the filter material layer, which is not conducive to the formation of microbial mucous membrane, and at the same time, after the formation of microbial mucous membrane, it may also destroy In order to avoid the integrity of the microbial mucous membrane, as shown in Figure 5, the above-mentioned biological slow filtration water purification device can also include:

The water distributor is located between the water inlet of the filter barrel and the filter material layer, and is used for uniform water distribution. After the water to be purified entering from the water inlet of the filter bucket passes through the water distributor, the flow rate of the water can be effectively reduced, and the hydraulic impact of the water flow on the surface filter material can be avoided, which is conducive to the formation of the microbial mucous membrane and maintains the integrity of the microbial mucous membrane .

The water distributor can adopt square basin, round basin and other structures according to the structure of the filter bucket, and the water distribution holes are evenly distributed at the bottom. In order to increase the water distribution effect of the water distributor, further improve the removal effect of suspended solids in the water, and reduce the clogging of the filter material in the biological slow filtration water purification device, coarse-grained quartz sand, stones and other filter materials can also be laid in the water distributor. And/or lay a layer of non-woven fabric. When the water passing effect of the water distributor is reduced, the filter material in the water distributor can be taken out for washing and then put back in for repeated use, which is convenient to use. Because the non-woven fabric is very cheap, it can be discarded directly and replaced with a new one.

In addition, when the particle size of the filter material in the bottom filter material layer is relatively small, the filter material in the bottom filter material layer may block the water outlet of the filter bucket. At this time, it can be installed in the biological slow filter water purification device The following support layer or perforated plate to prevent the water outlet of the filter bucket from being blocked:

1. Supporting layer

As shown in Figure 5 again, the above-mentioned biological slow filtration water purification device may also include:

The support layer is used to prevent the filter material in the filter material layer from blocking the water outlet of the filter bucket, and is arranged below the filter material layer, and the water outlet of the filter bucket is located in the support layer.

The supporting layer can effectively collect drainage and prevent the clogging and loss of the filter material in the filter material layer. Usually, the supporting layer is composed of gravel with coarse particle size. Of course, other methods can also be used to prevent the filter material in the filter material layer from blocking the water outlet of the filter bucket, for example, a filter screen is arranged at the water inlet of the water outlet pipe of the filter bucket.

2. Perforated plate

As shown in Figure 6, the above-mentioned biological slow filtration water purification device may also include:

The porous plate is used to carry the filter material layer, so that a water storage space is formed between the filter material layer and the bottom of the filter bucket, so that the water passing through the filter material layer enters the water storage space and prevents the filter material in the filter material layer from falling into the storage space. The water space is arranged under the filter material layer, and the water outlet of the filter barrel is connected with the water storage space.

The perforated plate is a plate-like structure with multiple holes, and the pore size can be determined according to the particle size of the filter material in the bottom filter material layer. The pore size of the porous plate should be able to intercept the filter material in the bottom filter material layer. . The perforated plate can ensure the flow of water to the lower part and prevent the upper filter material from penetrating into the lower space; when the upper filter material is taken out, the perforated plate can be taken out for cleaning; the lower part of the perforated plate is the water storage space, and the water in the lower part passes through the outlet of the filter bucket The water outlet flows out, and the purified water flowing out from the water outlet of the filter barrel can be collected into containers such as barrels, vats, and basins.

Compared with the supporting layer, the porous plate has a smaller thickness, correspondingly reducing the height of the biological slow filtration water purification device and reducing the volume of the water treatment equipment.

In addition, in order to prevent the microbial mucous membrane and the filter material layer from being damaged by pollutants such as rainwater washing or dust, the biological slow filtration water purification device may further include: a top cover, which is located on the top of the filter barrel. Preferably, the top cover is made of transparent material so that there is enough light in the filter bucket to promote the formation and growth of microbial mucous membrane; of course, if the biological slow filtration water purification device is located in a good environment such as indoors, the top cover may not be used , in order to have enough light and air to provide a good environment for the formation and generation of microbial mucous membranes.

As shown in Figure 7, it is a schematic diagram of the operation flow of the above-mentioned water treatment equipment, including the following steps:

Step S71, preparation work.

Connect the distribution box to the power supply.

When the water purification device is a biological slow filtration water purification device (as shown in Figure 4, 5 or 6), first add a certain amount of water into the filter bucket, then fill the filter material in sequence, and add water at the same time, when filling the filter material , it is necessary to squeeze out the air bubbles in the filter material layer, and ensure that all the filter materials are in contact with water to prevent short circuit of the water flow during the water purification process; after the filter material is filled, the filter material on the upper surface of the top filter material layer is smoothed To facilitate the formation of microbial mucosa.

Connect the water outlet of the filter barrel to the elbow and straight pipe outside the filter barrel, so that the outlet water will flow out about 15cm above the filter material to ensure the depth of the upper layer of water above the filter material.

Step S72, using the distribution box to control the pump to start working.

The distribution box is equipped with three gear switches of automatic, stop and manual. The user can make the pump work according to the user's needs by toggling these gear switches. For example, if the user expects to obtain purified water continuously, the user can turn the gear switch to the automatic gear; when the purified water obtained by the user is enough or the water treatment equipment needs to be cleaned and maintained, the user can turn the gear switch When the user expects to wash clothes, feed livestock and other large amounts of water, the user can turn the gear switch to the manual gear to force the pump to be turned on, and the user can directly receive water at the water outlet of the high-level water tank. No need to go through the treatment of the water purification device.

Step S73, the pump draws water from the water source, so that the water enters the high-level water tank after being pre-filtered by the filter.

Step S74, the water in the high-level water tank is discharged into the water purification device at a preset flow rate under the control of the flow regulator.

Wherein, when the constant flow device has the structure shown in Figure 3, the purpose of controlling the drainage speed of the high-level water tank to the preset flow rate can be achieved by adjusting the water level difference inside and outside the container. Adjusting the water level difference inside and outside the container can be achieved in the following ways: put some heavy objects (such as stones, etc.) Heavy objects increase (decrease) the water level difference so that the drainage speed of the high-level water tank meets the requirements;

In addition, when the gear switch of the distribution box is turned to the automatic position, the water level measuring device will measure the water level in the high level water tank in real time, and when the water level reaches the first preset value, the water level measuring device will send a shutdown command to the distribution box , the distribution box shuts down the pump according to the shutdown command to stop the water from entering the high water tank and prevent the water in the high water tank from overflowing; and when the water level reaches the second preset value, the water level measuring device will send a start command to the distribution box, and the distribution box The electric box starts the pump according to the starting command to restart water intake into the high-level water tank. The above automatic control process can ensure that the high-level water tank is always in normal working condition.

Step S75, the water purification device purifies the water.

Specifically, as shown in Figure 8, when the water purification device is a biological slow filtration water purification device, the process of purifying water by the biological slow filtration water purification device includes the following steps:

Step S751, the water discharged from the high-level water tank enters the filter barrel from the water inlet on the upper part of the filter barrel, and the water distributor arranged above the filter material layer distributes the water evenly.

Step S752, running at a low filtration rate (relative to normal operating conditions).

In the initial stage, low filtration rate is used to feed water (that is, the constant flow device controls the drainage rate of the high-level water tank to a relatively low flow rate), so as not to disturb the filter material layer, and the low filtration rate is also conducive to the formation of microbial mucous membrane; continuous low filtration rate After running for a period of time, test the water discharged from the outlet of the filter bucket to check whether the filter material layer is working normally.

Step S753, gradually increasing the filtration rate to a preset value.

If the filter material layer works normally, that is, the removal rate of pollutants remains basically unchanged, indicating that a mature and stable microbial mucous film has been formed on the upper surface of the filter material layer, at this time, the filtration flow rate can be increased until the preset value (that is, the constant flow device will be set to high The drainage speed of the water tank increases to the preset value).

Step S754, the filtering is performed normally.

When the drainage water quality remains stable, keep the filtration rate at the preset value (that is, the constant flow device controls the drainage rate of the high-level water tank at the preset value) and continue to operate.

Step S755, the filter material is blocked.

If the displacement of the filter bucket is getting smaller and smaller, it means that the filter material is clogged and needs to be cleaned.

Step S756, removing the surface filter material.

The user controls the pump to stop running through the distribution box. When the water in the filter bucket is released to the surface of the top layer of filter material, the top layer of filter material and the microbial mucous membrane attached to the surface of the top layer of filter material are immediately removed. The faster the cleaning , the possibility and degree of disturbance of the filter material in the lower filter material layer are smaller.

In summary, in the embodiment of the present invention, the water supply device supplies the water to be purified to the water purification device at a preset flow rate. Compared with the prior art, the hydraulic load of the water purification device in the embodiment of the present invention is stable, avoiding the occurrence of purification The phenomenon that the water quality of the back water exceeds the standard. In addition, if the water purification device is a biological slow filtration water purification device, the biological slow filtration water purification device uses the microbial mucous membrane located on the upper surface of the top filter material layer to disinfect the water to be purified, does not require special disinfection facilities, and is easy to operate. It has a good removal effect on bacteria, viruses, organic pollutants and other pollutants; in addition, multi-layer filter material layer is used for filtration and adsorption, so that the final drainage water quality meets the standards stipulated by the state; in addition, the structure of biological slow filtration water purification device Simple, low installation and operating costs, suitable for specific conditions in rural areas of our country.

The above description is a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.

Claims (8)

1. water treating equipment is characterized in that, comprising:

Water supply installation is used for storing water, and discharges described water by preset flow rate;

Purifier is used for purifying the described water that described water supply installation is discharged, and discharges the rear water of purification;

Wherein, described water supply installation comprises:

Elevated tank is used for storing water, and discharges described water;

Galvanostat is used for the drainage speed of described elevated tank is controlled at described preset flow rate;

Described galvanostat comprises:

Container places described elevated tank, and the open top of described container, bottom are interspersed with the first pipe and the second pipe;

Described the first pipe when being used for the water surface when described elevated tank and being higher than the water surface in the described container, imports the water in the described elevated tank in the described container;

Described the second pipe is communicated with the water outlet of described elevated tank, is used for described preset flow rate the water of described container being directed at the water outlet of described elevated tank.

2. water treating equipment as claimed in claim 1 is characterized in that, also comprise:

Strainer is used for filtering the water that enters described water supply installation;

Filtering net is arranged in the described strainer, is used for the suspended matter of interception water.

3. water treating equipment as claimed in claim 1 is characterized in that,

The bottom of described elevated tank also is provided with mud discharging mouth; And/or

Described elevated tank is inverted cone-shaped.

4. such as claim 1,2 or 3 described water treating equipment, it is characterized in that, also comprise:

Pump is used for the water at water source is directed in the described elevated tank;

Switch box is used for opening or close described pump according to the instruction of user's input;

Water level measurement device, the water level for measuring described elevated tank sends out code when described water level reaches the first preset value, send enabled instruction when described water level reaches the second preset value, and described the first preset value is greater than described the second preset value;

Described switch box also is used for receiving described enabled instruction or out code, and closes described pump when receiving described out code, opens described pump when receiving described enabled instruction.

5. water treating equipment as claimed in claim 1 is characterized in that, described purifier is that biology is filtered purifier slowly, and described biology is filtered slowly purifier and comprised:

Lauter tub has water-in and water outlet, and the water-in of described lauter tub is communicated with the water outlet of described water supply installation;

The multilayer filter material layer is arranged in described lauter tub, described multilayer filter material layer from the top layer of lauter tub to the lauter tub bottom according to particle diameter from carefully to thick arranged sequentially;

Be attached to the microorganism mucous membrane of top layer filter material layer upper surface;

Wherein, the water-in of described lauter tub is positioned at the top of microorganism mucous membrane, the below that water outlet is positioned at described filter material layer.

6. water treating equipment as claimed in claim 5 is characterized in that, described biology is filtered slowly purifier and also comprised:

Water distributor is used for water distribution uniformity, is arranged between the water-in and described microorganism mucous membrane of described lauter tub.

7. water treating equipment as claimed in claim 6 is characterized in that,

Also be provided with filtrate in the described water distributor.

8. such as claim 5,6 or 7 described water treating equipment, it is characterized in that described biology is filtered slowly purifier and also comprised:

Supporting layer for the water outlet of the described lauter tub of filter clogging that prevents described filter material layer, is arranged at the below of described filter material layer, and the water outlet of described lauter tub is arranged in described supporting layer; Perhaps

Porous plate, be used for carrying described filter material layer, make and form a water space between the bottom of described filter material layer and described lauter tub, make the water that passes filter material layer enter water space and prevent that the filtrate in the described filter material layer from falling into described water space, be arranged at the below of described filter material layer, the water outlet of described lauter tub is communicated with described water space.

Images