CN211141732U - Waste water treatment device - Google Patents

Abstract

The utility model discloses a wastewater treatment device belongs to desulfurization waste water treatment technical field, has solved the problem that current processing apparatus is complicated, the investment is big, the water yield is low, the running cost is high. The wastewater treatment device comprises a base and a shell; a neutralization water tank, a neutralization settling tank, a storage water tank, a filtering funnel, a first supporting plate and a second supporting plate are arranged in the shell; the top of the storage water tank is provided with a filter funnel; a second supporting plate is arranged above the filtering funnel, and the neutralizing and settling tank and the filtering chamber are both arranged on the second supporting plate; the filter chamber is communicated with the filter funnel, the neutralization settling tank is communicated with the filter chamber through a second conduit, a rotary conduit is arranged between the second conduit and the filter chamber, one end of the rotary conduit is connected with the second conduit, the other end of the rotary conduit is communicated with the filter chamber, a filter assembly is arranged on the lower portion of the filter chamber, and the upper surface of the filter assembly is flush with the bottom edge of the second conduit. The utility model can be used for the treatment of desulfurization waste water.

Description

Waste water treatment device

Technical Field

The utility model relates to a desulfurization waste water treatment technical field especially relates to a wastewater treatment device.

Background

China is a country with rich coal resources, and the current thermal power generation accounts for over 70 percent of the whole power generation industry. In recent decades, although the country adopts environmental protection policies such as index limitation, pollution discharge charge and the like, the total amount of discharged desulfurization wastewater is still huge every year. The polluted area of the waste water is rapidly enlarged, which causes great damage to crops, forests, human health and the like in China and also becomes an important factor restricting the sustainable development of economy and society in China. With the increasingly stringent national environmental protection requirements, the desulfurization wastewater draws high attention from people because of the high concentration of heavy metal ions.

At present, the desulfurization wastewater zero-discharge technical route in China is diversified, but the technical processes have advantages and disadvantages, and the conventional desulfurization wastewater zero-discharge system has the disadvantages of complex system, large engineering investment, large workload of equipment operation and maintenance, poor treatment effect, low water yield, frequent replacement of filter media, high operation and maintenance cost and the like.

Disclosure of Invention

In view of the above analysis, the present application aims to provide a wastewater treatment apparatus capable of solving at least one of the following technical problems: (1) the existing desulfurization wastewater treatment device is complex and large in investment; (2) poor treatment effect and low water yield; (3) the filter medium needs to be replaced frequently, the running cost is high and the like.

The purpose of the application is mainly realized by the following technical scheme:

in one aspect, the present application provides a wastewater treatment device comprising a base and a housing; a neutralization water tank, a neutralization settling tank, a storage water tank, a filtering funnel, a first supporting plate and a second supporting plate are arranged in the shell; the top of the storage water tank is provided with a filter funnel; a second supporting plate is arranged above the filtering funnel, and the neutralizing and settling tank and the filtering chamber are both arranged on the second supporting plate; the filter chamber is communicated with the filter funnel, the neutralization settling tank is communicated with the filter chamber through a second conduit, a rotary conduit is arranged between the second conduit and the filter chamber, one end of the rotary conduit is connected with the second conduit, the other end of the rotary conduit is communicated with the filter chamber, a filter assembly is arranged on the lower portion of the filter chamber, and the upper surface of the filter assembly is flush with the bottom edge of the second conduit.

Furthermore, a second supporting plate is arranged above the neutralization settling tank and the filtering chamber, and the neutralization water tank and the storage tank are both arranged on the first supporting plate.

Further, the neutralization water tank comprises a first neutralization chamber, a second neutralization chamber and a third neutralization chamber, the bottoms of the first to third neutralization chambers are provided with water outlets, the tops of the first to third neutralization chambers are provided with water inlets, and the water outlets are communicated with the top of the neutralization settling tank; rotors are arranged in the first to third neutralizing chambers; the top of the shell is provided with a water filling port and a material filling port, and the water inlet is communicated with the water filling port through a three-way pipe; the side of first neutralization chamber is equipped with the feed inlet, feed inlet and storage tank intercommunication, the top and the sprue intercommunication of storage tank.

Furthermore, a supporting base is arranged in the filtering funnel, and the filtering component is placed on the supporting base; a sealing block is arranged between the filtering component and the supporting base.

Further, the filtering component comprises a filtering cotton layer and a ceramic membrane from top to bottom.

Further, the filter cotton layer is provided with active carbon; the ceramic membrane comprises a membrane layer, a transition layer and a supporting layer from top to bottom.

Further, the thickness of the transition layer is 20-60 μm; the thickness of the film layer is 3-10 μm.

Furthermore, the water inlets in the first to third neutralization chambers are all positioned in the middle of the top of the neutralization chamber, and the water outlets are all positioned in the middle of the bottom of the neutralization chamber.

Further, the height h of the feed port on the first neutralizing chamber from the bottom of the first neutralizing chamber₂And the height h of the first neutralizing chamber satisfies: h/7 is less than or equal to h₂≤h/4。

Further, the center of the rotor in the first neutralization chamber is located right below the first water inlet, and the height h of the center of the rotor in the first neutralization chamber from the bottom of the first neutralization chamber₁Is 2 h/5.

Compared with the prior art, the application can realize at least one of the following beneficial effects:

a) the wastewater treatment device provided by the application is provided with the base, the shell, the first supporting plate and the second supporting plate, so that the neutralization water tank, the neutralization settling tank, the storage tank and the storage water tank are distributed into three layers of working units, the structure is clear, and the maintenance and the cleaning are convenient; the neutralization efficiency of the wastewater can be accelerated by adopting the three neutralization water tanks; the side of the neutralization water tank is arranged through the feeding hole, and the rotor in the neutralization water tank is combined, so that when the neutralization reaction is in progress, materials of the desulfurization wastewater and the neutralization wastewater enter the rotor in different directions to push the rotor to rotate, the neutralization reaction is performed to play a certain stirring role, the stirring is uniform, and the neutralization efficiency is accelerated.

b) The filtering component is arranged below the joint of the second conduit, so that water flow generates two component forces on the surface of the filtering component, one component force is a normal force perpendicular to the surface of the filtering component, water molecules penetrate through the surface of the filtering component, the other component force is a tangential force parallel to the surface of the filtering component, trapped matters on the surface of the filtering component are washed away, when the filtering transmittance is reduced, the surface of the filtering component can be effectively cleaned as long as the normal force on the surface of the filtering component is reduced and the tangential force on the surface of the filtering component is improved, so that the surface of the filtering component recovers the original performance, therefore, the surface of the filtering component is not easy to generate concentration polarization phenomenon and scaling problem, the attenuation of the filtering transmittance is slow, the service life of the filtering component can be obviously prolonged, and the filtering efficiency is directly improved; the rotary guide pipe can enable large-flow waste water to enter the rotary guide pipe and enter the filter chamber again and wash impurities adhered to the surface of the filter assembly, so that the surface of the filter assembly is prevented from being blocked, and meanwhile, the influence on the tightness of equipment caused by overlarge water entering the filter chamber can be prevented.

c) The filtering component ensures that the filtering effect after the double purification of the filtering cotton layer and the ceramic membrane reaches the molecular level through the filtering cotton layer and the ceramic membrane with a specific structure, and can ensure that the filtered water quality reaches the requirement, so that the water obtained from the storage water tank directly enters the water using equipment for recycling, and the equipment structure is obviously simplified.

d) Through set up sealed piece between filter assembly and support base, can prevent that waste water from the filter assembly and supporting the gap infiltration of base, influence the filter effect, can increase the gas tightness of the cavity that filters funnel and filter chamber and form simultaneously, rely on inside pressure to combine the shearing force that waste water flow through the filter assembly production, filter waste water.

e) Through the position relation of accurate control rotor and water inlet and feed inlet, can guarantee that the water of water filling port input can lean on the blade of free fall to fall on the rotor and can drive the rotor and rotate, guarantee simultaneously that the material of neutralization waste water also can promote the blade rotation of rotor, guarantee the stirring, show improvement neutralization efficiency.

Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the application, wherein like reference numerals are used to designate like parts throughout.

FIG. 1 is a schematic view showing the construction of a wastewater treatment apparatus according to example 1 of the present application;

FIG. 2 is a schematic structural view of a filter assembly according to example 1 of the present application;

figure 3 is a schematic structural view of the filtering chamber of embodiment 1 of the present application;

fig. 4 is a schematic structural view of a first neutralization chamber in embodiment 1 of the present application.

Reference numerals:

1-water injection port; 2-a first neutralization chamber; 3-a second neutralization chamber; 4-a third neutralization chamber; 5-a first water valve; 6-a second water valve; 7-a third water valve; 8-a neutralization settling tank; 9-a PH sensor; 10-a second support plate; 11-a first water inlet; 12-a feed inlet; 13-water outlet; 14-a housing; 15, a material injection port; 16-a first solenoid valve; 17-a material storage tank; 18-a first support plate; 19-a rotating conduit; 20-filtering chamber; 21-a second solenoid valve; 22-a filter assembly; 23-a filter funnel; 24-a storage tank; 25-single stage water pump; 26-a water quality detector; 27-a base; 28-a roller; 29-a layer of filter cotton; 30-a sealing block; 31-a support base; 32-a pressure sensor; 33-ceramic membrane.

Detailed Description

The preferred embodiments of the present application will now be described in detail with reference to the accompanying drawings, which form a part hereof, and which together with the embodiments of the application serve to explain the principles of the application.

Example 1

The present embodiment provides a wastewater treatment apparatus, see fig. 1-4, comprising a base 27 and a housing 14; the shell 14 is arranged above the base 27, and a neutralization water tank, a neutralization settling tank 8, a storage tank 17, a storage water tank 24, a first supporting plate 18 and a second supporting plate 10 are arranged inside the shell 14; a storage water tank 24 is mounted at the bottom inside the shell 14, a water quality detector 26 is mounted inside the storage water tank 24, the water quality detector 26 can effectively detect the water quality inside the storage water tank 24, and a filter funnel 23 is mounted at the top of the storage water tank 24; a second supporting plate 10 is arranged above the filtering funnel 23, the neutralizing and settling tank 8 and the filtering chamber 20 are both arranged on the second supporting plate, the filtering chamber 20 is communicated with the filtering funnel 23, the neutralizing and settling tank 8 is communicated with the filtering chamber 20 through a second conduit, a rotary conduit 19 is arranged between the second conduit and the filtering chamber 20, one end of the rotary conduit is connected with the second conduit, the other end of the rotary conduit 19 is communicated with the filtering chamber 20, a filtering component 22 is arranged at the lower part of the filtering chamber, and the upper surface of the filtering component 22 is flush with the bottom edge of the second conduit; the neutralization water tank and the material storage tank 17 are both arranged on a first supporting plate 18, the neutralization water tank comprises a first neutralization chamber 2, a second neutralization chamber 3 and a third neutralization chamber 4, the bottoms of the 3 neutralization chambers are respectively provided with a water outlet 13, and the water outlets are communicated with the top of the neutralization settling tank 8; the top of the shell 14 is provided with a water injection port 1 and a water injection port 15, the tops of the 3 neutralization chambers are provided with water inlets, and the 3 water inlets are communicated with the water injection port 1 through a three-way pipe; a feed inlet 12 is formed in the side edge of the first neutralizing chamber 2 and is communicated with a material storage tank 17, rotors are arranged in the 3 neutralizing chambers, and the top of the material storage tank 17 is communicated with a material injection port 15; the bottom of the base 27 is mounted with rollers 28.

Compared with the prior art, the wastewater treatment device has the advantages that the neutralization water tank, the neutralization settling tank 8, the storage tank 17 and the storage water tank 24 are distributed into three layers of working units through the base, the shell, the first supporting plate 18 and the second supporting plate 10, so that the structure is clear, and the maintenance and the cleaning are convenient; the three neutralizing water tanks can accelerate the neutralizing efficiency of the wastewater, the feed inlet is arranged on the side edge of the neutralizing water tank and is combined with the rotor in the neutralizing water tank, when the neutralizing reaction is in progress, materials of the desulfurization wastewater and the neutralizing wastewater enter the neutralizing water tank in different directions of the rotor to push the rotor to rotate to perform a certain stirring effect on the neutralizing reaction, the stirring is uniform, and the neutralizing efficiency is accelerated; the filtering component is arranged below the joint of the second conduit, so that water flow generates two component forces on the surface of the filtering component, one component force is a normal force perpendicular to the surface of the filtering component, water molecules penetrate through the surface of the filtering component, the other component force is a tangential force parallel to the surface of the filtering component, trapped matters on the surface of the filtering component are washed away, when the filtering transmittance is reduced, the surface of the filtering component can be effectively cleaned as long as the normal force on the surface of the filtering component is reduced and the tangential force on the surface of the filtering component is improved, so that the surface of the filtering component recovers the original performance, therefore, the surface of the filtering component is not easy to generate concentration polarization phenomenon and scaling problem, the attenuation of the filtering transmittance is slow, the service life of the filtering component can be obviously prolonged, and the filtering efficiency is directly improved; the rotary conduit is adopted, so that large-flow wastewater can enter the rotary conduit 19 and enter the filter chamber again and scour impurities adhered to the surface of the filter assembly, the surface of the filter assembly is prevented from being blocked, and the influence on the sealing performance of equipment due to the fact that the water entering the filter chamber is too large can be prevented.

Specifically, a supporting base 31 is arranged in the filtering funnel, the filtering component 22 is placed on the supporting base 31, and the filtering component 22 comprises a filtering cotton layer 29 and a ceramic membrane 33 from top to bottom. A sealing block 30 is provided between the filter assembly 22 and the support base 31.

In order to improve the wastewater adsorption, desulfurization and deacidification performances of the filter cotton layer 29, the filter cotton layer 29 is provided with activated carbon, specifically, the activated carbon is honeycomb activated carbon, the activated carbon is made of anthracite, the specific surface area is 900-1000 square meters per gram, the number of holes is 150 holes per square inch, the wall thickness is 1mm, the positive compressive strength is greater than 1.2Pa, and the heavy metal adsorption rate is as follows: the dynamic adsorption is more than or equal to 50 percent; thus, the structure of the filtering cotton layer 29 is porous honeycomb, the pore structure is developed, the specific surface area is large, the fluid resistance is small, the service life is long, heavy metal substances and acid liquor remained in the wastewater can be adsorbed, and the filtering effect is excellent; the filter cotton layer is more compact simultaneously, and the material parameter of filter cotton layer can guarantee that the waste water flow that gets into the filter chamber reaches dynamic balance with the pressure in the filter chamber and the discharge after filtering, can guarantee to bear the pressure range in the filter chamber and guarantee to accomplish the filtration process to be unlikely to cause the damage of filter chamber because of the pressure of filter chamber inside is too big.

Specifically, the ceramic membrane 33 is divided into a membrane layer, a transition layer and a support layer from top to bottom, the aperture of the support layer is 20 μm, the porosity is 40%, and the support layer can increase the mechanical strength of the ceramic membrane; the aperture of the transition layer is smaller than that of the support layer, the transition layer has the function of preventing the particles from permeating into the support layer, the thickness of the transition layer is about 20-60 mu m, and the porosity is 30-40%; the aperture of the film layer is 0.8 nm-1 μm, the thickness is 3-10 μm, the porosity is 40-55%, and the film layer has a good separation function; in this way, the ceramic membrane can allow small molecular substances to permeate and intercept large molecular substances, thereby achieving the purposes of separation, impurity removal, sterilization and the like.

The filtering component 22 ensures that the filtering effect after the double purification of the filtering cotton layer and the ceramic membrane 33 reaches the molecular level by arranging the filtering cotton layer 29 and the ceramic membrane 33 with specific structures, and can ensure that the filtered water quality meets the requirement, so the storage water tank 24 is connected with external water equipment through a third conduit, the third conduit is provided with a single-stage water pump 25, the single-stage water pump 25 is opened after the water obtained from the storage water tank 24 reaches the standard, and the treated wastewater is directly led into the water equipment for recycling.

Be provided with sealed piece 30 between filter component 22 and the support base 31, sealed piece 30 can prevent that waste water from the gap infiltration of filter component with the support base, influences the filter effect, can increase the gas tightness of filtering the cavity that funnel and filter chamber formed simultaneously, relies on inside pressure to combine the shearing force that waste water flow through filter component production, filters waste water.

In order to quickly judge the performance condition of the filter assembly, pressure sensors 32 are arranged at two ends of the ceramic membrane 33, the pressure difference between two ends of the filter assembly is within the range of 1-3bar when the ceramic membrane works normally, and the filter assembly is cleaned when the pressure difference is more than 3 bar.

Specifically, the water inlets in the 3 neutralization chambers are all positioned in the middle of the top of the neutralization chamber, and the water outlets are all positioned in the middle of the bottom of the neutralization chamber.

In order to ensure that water input from the water injection port can fall on the blades of the rotor by a free falling body and can drive the rotor to rotate and simultaneously ensure that materials for neutralizing waste water can also push the blades of the rotor to rotate, the center of the rotor in the first neutralizing chamber is positioned right below the first water inlet 11, and the center of the rotor in the first neutralizing chamber is away from the bottom of the first neutralizing chamber by the height h₁Is 2 h/5.

The height h of the feed inlet from the bottom of the first neutralization chamber₂If the size of the waste water is too small, materials for neutralizing the waste water are easy to deposit at the bottom of the neutralizing chamber, so that the stirring is not uniform, and the neutralizing efficiency is low; h is₂If too big, the material that can't form the feed inlet and the water of water filling port act on the blade simultaneously, promote the effect that the blade rotated. Thus, the height h of the feed port on the first neutralization chamber from the bottom of the first neutralization chamber is controlled₂The height h of the first neutralization chamber satisfies the relationship: h/7 is less than or equal to h₂H/4, preferably, in the first placeThe height h of the feed opening on the neutralization chamber from the bottom of the first neutralization chamber₂Is h/5.

In order to save the time that the staff draws waste water sample detection, improve the treatment effeciency, be equipped with PH sensor 9 in the neutralization and precipitation case 8, PH sensor 9 links to each other with outside display screen, and during the implementation, PH sensor 9 detects the PH value of waste water to show PH value on the display screen, judge according to the PH value of waste water and continue to feed in raw material or with waste water leading-in filter chamber 20.

Specifically, a first water valve 5 is arranged between the first neutralization chamber and the neutralization settling tank 8, a second water valve 6 is arranged between the second neutralization chamber and the neutralization settling tank 8, and a third water valve 7 is arranged between the third neutralization chamber and the neutralization settling tank 8; the first water valve 5, the second water valve 6 and the third water valve 7 are used for controlling the flow of water.

Specifically, a first electromagnetic valve 16 is arranged between the first neutralizing chamber 2 and the material storage tank 17, and the first electromagnetic valve 16 is used for controlling the flow of the material for neutralizing the wastewater.

Specifically, be equipped with second solenoid valve 21 on the second pipe, second solenoid valve 21 can be effectively cut off rivers, makes the staff can adjust the flow of water through the solenoid valve according to actual conditions, has improved the availability factor of device.

In order to detect the water quality condition in the storage water tank 24 at any time, the water quality detector 26 is installed inside the storage water tank 24, the water quality detector 26 is connected with an external display screen, in the implementation process, the water quality condition in the storage water tank 24 is detected by the water quality detector 26, the detection result is displayed on the display screen, after the water quality is judged to reach a certain standard according to the detection result of the water quality detector 26, the waste water is led out to a water using device, the water quality detector 26 can enable workers to master the detected water quality at any time, and damage to the environment and threat to the health of people caused by substandard water quality discharge are avoided.

As a large amount of heat is released in the neutralization reaction, and the strength and toughness of the blades of the rotor are required to be high in the stirring process, the blades of the rotor are made of high-temperature-resistant, corrosion-resistant, high-strength and high-toughness materials, and the blades of the rotor can be made of metal ceramic composite materials.

Because the device of this embodiment divides the module installation, it is convenient to dismantle, and during the implementation, regularly centering and sediment water tank, the filter chamber washs and can keep using simple and convenient.

Example 2

This example provides a method for treating desulfurization wastewater, which employs the wastewater treatment apparatus of example 1, and comprises the following steps:

step S1, moving the wastewater treatment device to a position where operation is needed;

s2, injecting a part of material for neutralizing the wastewater into a neutralizing chamber, then injecting the wastewater into the neutralizing chamber, then injecting a part of material for neutralizing the wastewater into the neutralizing chamber, standing for 5-10 min until the water is not turbid, and allowing the neutralized wastewater to flow into a neutralizing and settling tank;

step S3, automatically detecting the PH value of the wastewater in the neutralization settling tank by a PH sensor, introducing the wastewater into a filtering chamber after the pH value of the wastewater reaches neutral or slightly alkaline, and filtering the wastewater by a filtering component and then introducing the wastewater into a storage tank;

and step S4, detecting the water quality by using a water quality detector, and finishing the treatment of the desulfurization wastewater after the water quality reaches the standard.

Because the desulfurization wastewater is mainly sulfate ions, in step S1, the material for neutralizing the wastewater is lime milk (calcium hydroxide), and the lime milk reacts with the sulfate ions to generate calcium sulfate precipitate, thereby achieving the purpose of treating the desulfurization wastewater.

Specifically, in step S3, the PH of the neutral or slightly alkaline wastewater is controlled to be 7 to 9 in order to avoid the excessive alkalinity of the wastewater quality and the influence on the use of the subsequent water.

Specifically, in step S3, the wastewater is introduced into the filtering chamber, and the large-flow wastewater enters the return conduit and enters the filtering chamber again to wash away impurities adhered to the surface of the filtering assembly, so as to prevent the surface of the filtering assembly from being blocked, and prevent the water entering the filtering chamber from being too large, thereby affecting the sealing performance of the device.

The parameters of the desulfurization wastewater before and after treatment by the method of the embodiment are shown in the following table 1, and the three-step method of firstly injecting the material for neutralizing the wastewater, then injecting the wastewater and then injecting the material for neutralizing the wastewater is adopted in the treatment method of the embodiment, so that the reaction is more uniform and sufficient, and the reaction efficiency is higher; in the implementation process, the PH sensor and the water quality detector can automatically detect the PH value and the water quality, so that a worker can master the detected water quality all the time, and the damage to the environment and the threat to the health of people caused by the substandard discharge of the water quality are avoided; the treatment method of the embodiment has the advantages of simple steps and good effect, greatly reduces the procedures of the traditional process, effectively reduces the production cost, improves the production efficiency, and has wide applicability. As can be seen from Table 1, the desulfurization wastewater treated by the treatment method of the embodiment has clear appearance, greatly reduced contents of sulfate ions, COD, suspended matters and the like, and excellent treatment effect, and the treated wastewater meets the standard and can be recycled.

TABLE 1 comparison of the parameters before and after the desulfurization waste water treatment

Analysis item	Before the desulfurization wastewater treatment	After the desulfurization waste water is treated
			Appearance of the product	Light yellow	Medicine for treating acute respiratory syndrome
PH
		6	9
COD(mg/L)				1510	90.99
	Sulfate ion (mg/L)	4220	1703
Suspended substance (mg/L)				70	≤60

The above description is only for the preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application.

Claims (10)

1. A wastewater treatment plant, characterized in that the treatment plant comprises a base (27) and a housing (14); a neutralization water tank, a neutralization settling tank (8), a storage tank (17), a storage water tank (24), a filter funnel (23), a first support plate (18) and a second support plate (10) are arranged in the shell (14); a filter funnel (23) is arranged at the top of the storage water tank (24); a second supporting plate (10) is arranged above the filtering funnel (23), and the neutralization settling tank (8) and the filtering chamber (20) are both arranged on the second supporting plate (10); the filter chamber (20) communicates with the filter funnel (23), the neutralization settling tank (8) communicates with the filter chamber (20) through a second conduit, a rotary conduit (19) is arranged between the second conduit and the filter chamber (20), one end of the rotary conduit is connected with the second conduit, the other end of the rotary conduit (19) communicates with the filter chamber (20), a filter assembly (22) is arranged at the lower part of the filter chamber, and the upper surface of the filter assembly (22) is flush with the bottom edge of the second conduit.

2. The wastewater treatment plant according to claim 1, characterized in that a second support plate (10) is provided above the neutralization settling tank (8) and the filter chamber (20), and the neutralization tank and the storage tank (17) are placed on the first support plate (18).

3. The wastewater treatment device according to claim 2, characterized in that the neutralization water tank comprises a first neutralization chamber (2), a second neutralization chamber (3) and a third neutralization chamber (4), the bottoms of the first to third neutralization chambers are provided with water outlets, the tops of the first to third neutralization chambers are provided with water inlets, and the water outlets are communicated with the top of the neutralization settling tank (8); rotors are arranged in the first to third neutralizing chambers; the top of the shell (14) is provided with a water injection port (1) and a water injection port (15), and the water inlets are communicated with the water injection port (1) through a three-way pipe; the side of first neutralization chamber (2) is equipped with feed inlet (12), feed inlet (12) and storage tank (17) intercommunication, the top and the sprue (15) intercommunication of storage tank (17).

4. Wastewater treatment plant according to claim 1, characterized in that a support base (31) is provided inside said filtering funnel (23), said filtering assembly (22) being placed on said support base (31); a sealing block (30) is arranged between the filtering component (22) and the supporting base (31).

5. Wastewater treatment plant according to any of claims 1-4, characterized in that the filter module (22) comprises, from top to bottom, a layer of filter cotton (29) and a ceramic membrane (33).

6. The wastewater treatment plant according to claim 5, characterized in that the filter cotton layer (29) is provided with activated carbon; the ceramic membrane (33) is provided with a membrane layer, a transition layer and a supporting layer from top to bottom.

7. The wastewater treatment apparatus according to claim 6, wherein the transition layer has a thickness of 20 to 60 μm; the thickness of the film layer is 3-10 mu m.

8. The wastewater treatment plant according to claim 3, wherein the water inlet ports of the first to third neutralization chambers are each located in the middle of the upper top of the neutralization chamber, and the water outlet ports are each located in the middle of the bottom of the neutralization chamber.

9. Wastewater treatment plant according to claim 8, characterized in that the inlet opening in the first neutralization chamber (2) is at a height h from the bottom of the first neutralization chamber₂And the height h of the first neutralizing chamber satisfies: h/7 is less than or equal to h₂≤h/4。

10. Wastewater treatment plant according to claim 9, characterized in that the centre of the rotor in the first neutralization chamber (2) is located directly below the first water inlet (11), and that the centre of the rotor in the first neutralization chamber (2) is at a height h from the bottom of the first neutralization chamber₁Is 2 h/5.

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