CN113087307A

CN113087307A - Treatment method suitable for biological and ecological purification of town sewage

Info

Publication number: CN113087307A
Application number: CN202110417148.5A
Authority: CN
Inventors: 吴橙; 邓伟; 崔世平; 段洪瑞; 孟凡龙; 代莹; 王达
Original assignee: Suzhou Feichi Environmental Technology Co ltd
Current assignee: Suzhou Feichi Environmental Technology Co ltd
Priority date: 2021-04-19
Filing date: 2021-04-19
Publication date: 2021-07-09

Abstract

The invention relates to a treatment method suitable for biological and ecological purification of town sewage, which comprises the following steps: s1, carrying out solid-liquid separation; s2, biological purification. On one hand, the invention can effectively realize the collection of the floating objects in the water, avoid the blockage and simultaneously improve the efficiency and the quality of water purification; on the other hand can make water and the abundant contact of filler, be favorable to the formation of biofilm formation, and aeration oxygenation back simultaneously can improve water dissolved oxygen concentration fast, helps promoting follow-up filler room aerobic bacteria growth for decompose aquatic organic matter, also restrain anaerobic bacteria and breed moreover, effective control water worsens, keeps the water clean.

Description

Treatment method suitable for biological and ecological purification of town sewage

Technical Field

The invention belongs to the technical field of water treatment, and particularly relates to a treatment method suitable for biological and ecological purification of town sewage.

Background

With the rapid development of social economy, the living standard of people is increasingly improved, and the water environment problem of cities and surrounding villages in China is increasingly aggravated. Excessive organic pollutants, nitrogen and phosphorus and the like are discharged into the water body, the self-purification capacity of the water body is exceeded, the water body ecological system is unbalanced, and the water body ecological environment continuously deteriorates to form a black and odorous water body. The black and odorous water body not only brings extremely poor sensory experience to the masses, but also is even harmful to physical and mental health of people, and becomes an important environmental problem which restricts the economic development of China and influences the urban image and ecological safety.

Therefore, in order to solve the above problems, the sewage is treated by using a water ecological purifier, and particularly,

the water ecological purifier comprises a land host and a PVC sewage enclosure, wherein the enclosure is used for isolating the raw water of a river channel and the effluent of a sewage treatment device, the land host comprises a biological filter material system and a backwashing system, the biological filter material system mainly adopts functional filler to filter and intercept suspended matters and colloid in a filter bed, and meanwhile, microorganisms in water are attached to and grow on the surface of the filler to form a biological membrane, so that the COD, BOD, NH3-N and TP of the effluent are effectively reduced.

However, the existing ecological water purifier has the following defects in the purification process:

1. once the sewage contains more impurities, and the impurities and the sewage cannot be subjected to solid-liquid separation, so that the filtering and intercepting effects of the functional filler are influenced, and a water channel is easy to block, so that the sewage treatment efficiency is seriously influenced, and the quality of the sewage treatment cannot meet the discharge requirement easily;

2. in the long-term use process, the water inlet hole can be blocked by a biological membrane, and the porosity is reduced due to the accumulation of impurities among filter materials; the contact area of the water body is not enough, the hydraulic retention time is short, and the film formation is not facilitated due to the over-high flow speed; meanwhile, aerobic reaction is not carried out, which is not beneficial to the degradation of organic matters in the sewage, in addition, the growth of a biological film is not beneficial, the filler cannot reach the maximum utilization rate, and the like.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide an improved treatment method suitable for biological and ecological purification of urban sewage.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

a treatment method suitable for biological and ecological purification of town sewage comprises the following steps:

s1, solid-liquid separation

After the sewage is subjected to aeration and oxygenation treatment, the sewage is sent into an air flotation chamber by a pump, micro bubbles generated by a dissolved air pump are uniformly dispersed in the water by a closed-loop release pipeline at the bottom of the air flotation to drive suspended matters and oily substances to be separated from the water body, the separated water flows to a water outlet, and the separated suspended matters and oily substances enter a floater collecting cavity;

s2, biological purification

The water that accomplishes solid-liquid separation from the air supporting chamber overflows in proper order a preceding packing chamber top, gushes the mode from the bottom of a back packing chamber and passes through a plurality of packing chambers, under dirt and the absorption degradation of multistage packing, carries out quality of water and improves to discharge from the delivery port, wherein a plurality of packing chamber tops and floater collection chamber intercommunication, and produced suspended solid among the water purification process or the suspended solid that step S1 did not completely separate, from packing chamber overflow to floater collection chamber.

Preferably, the treatment method comprises a ship-borne mode and a land use mode, and in the ship-borne mode, the sewage is purified according to the steps S1 and S2 and then is discharged to the river channel from the water outlet; when the land use mode is adopted, in S1, the large-particle-size floaters are intercepted and filtered from the sewage through the grating, the sewage flows into the closed sewage regulation and storage well, the start and stop of the water pump are controlled through the liquid level meter, and the sewage is pumped from the sewage regulation and storage well to the air flotation chamber for solid-liquid separation.

According to a specific implementation and preferred aspect of the invention, the treatment method further comprises: s3, monitoring water quality, extracting a water sample from a water outlet to enter an intelligent water quality monitoring system, monitoring the water quality condition of the water discharged by the equipment in real time or at regular time, feeding the monitoring result back to an intelligent central control system, making analysis and judgment by the control system according to the result, adjusting the back washing time interval in time, maintaining the stability of the water quality, wherein the back washing water needs to flow back to a regulation and storage tank, is purified again through the whole system and cannot be directly discharged, and meanwhile, the sludge is discharged to a sludge tank or a sludge storage mechanism.

Preferably, a drainage cavity is formed at the water outlet end of the multi-stage filling cavity, and the biological purification process is further provided with a water quality monitoring system, wherein a medicament is automatically added into the drainage cavity according to the water quality entering the air flotation chamber or draining the drainage cavity. Through the setting of drainage chamber, firstly just be for the drainage, secondly, the control of the quality of water of being convenient for.

According to a specific implementation and preferable aspect of the invention, the water quality monitoring system comprises a water quality monitoring unit and an automatic dosing unit communicated with the water quality monitoring unit, wherein the water quality monitoring unit is communicated with a water inlet or/and a water outlet, and the automatic dosing unit comprises a plurality of medicine boxes arranged side by side, a pipeline for communicating each medicine box with the drainage cavity and a dosing pump. The water quality is further purified by the medicine, and different medicaments can be added according to different water qualities.

Preferably, the automatic medicine adding unit further comprises medicine bins, a stirrer and medicine dispensing pipelines, the medicine bins are arranged corresponding to the medicine boxes, the medicine dispensing pipelines are communicated with the medicine boxes, the medicine bins can discharge medicine to the corresponding medicine boxes, and the medicine dispensing pipelines are communicated with the water outlet cavities of the water discharging cavities. Specifically, the adding amount of the medicament is completely determined according to the information acquired by the water quality monitoring unit, so that the medicament cabin and the medicament dispensing pipeline are used for dispensing different medicaments according to the information acquired by the water quality monitoring unit.

Further, the medicine dispensing pipeline is located above the pipeline, the medicine boxes corresponding to the medicine dispensing pipeline are introduced from the bottom, and medicines and water are dispensed in the medicine boxes under the stirring of the stirrer. In this example, the pipeline of dispensing is direct to be linked together with the drainage chamber, so, does not need outside water receiving, and simultaneously, the medical kit also communicates with the drainage chamber, and consequently, liquid after dispensing flows back to the drainage chamber again, not only conveniently dispenses, and more be favorable to the rapid mixing of drainage intracavity water and medicine, so to ensure to accomplish the log raft after the high-quality purification and to the river course.

According to still another embodiment and preferred aspect of the present invention, the water ecological purifier used in the treatment method comprises a case having a water inlet and a water outlet, a water purification system and a backwashing system, wherein a water treatment zone and a flotage collection zone are formed inside the case, wherein the water treatment zone comprises a solid-liquid separation chamber disposed at the water inlet and packing chambers sequentially distributed from the water inlet to the water outlet and communicated with each other, and the flotage collection zone comprises a flotage collection chamber, wherein the flotage collection chamber is communicated with the solid-liquid separation chamber from the top, and the packing chambers are communicated with the flotage collection chamber from the top through a communication pipe; the water purification system comprises an air floatation separation device and a filler filtering device which are positioned in a water treatment area, and an aeration and oxygenation device communicated with a water inlet pipeline of the air floatation separation device, wherein the air floatation separation device is positioned in a solid-liquid separation cavity, the filler filtering device comprises a plurality of fillers, and at least one filler is arranged in each filler cavity. On one hand, by the arrangement of aeration and aeration solid-liquid separation and the arrangement of a floating object collecting area, the floating objects in water can be effectively collected, so that blockage is avoided, and the efficiency and quality of water purification are improved; on the other hand through the packing chamber that sets gradually, can be so that water and the abundant contact of filler, be favorable to the formation of biofilm formation, behind the aeration oxygenation simultaneously, can improve water dissolved oxygen concentration fast, help promoting the aerobic bacteria growth of follow-up packing chamber for decompose aquatic organic matter, also restrain the anaerobism and breed moreover, effective control water worsens, keeps the water clean.

Preferably, the floater collecting cavity and the solid-liquid separation cavity are arranged side by side, and the floater collecting cavity, the solid-liquid separation cavity and the plurality of packing cavities after being arranged side by side are arranged from the water inlet to the water outlet. The layout is reasonable in space distribution and more beneficial to miniaturization of the land host.

According to a further embodiment and preferred aspect of the present invention, a first partition and a second partition are formed between every two adjacent packing chambers, wherein a compartment is formed between the first partition and the second partition, and the compartment is communicated with the two adjacent packing chambers from the top and the bottom, respectively. Through the setting that separates the chamber, realize the intercommunication between a plurality of cavitys in the water treatment district on the one hand, on the other hand ensures that the biomembrane on the filler can adsorb degradation aquatic pollutants, improves water quality of water, and the river course is discharged in the last effluent overflow.

Specifically, the top of the first partition plate is disconnected with the top of the case to form an overflow port, the bottom of the second partition plate forms a communication hole, and water overflows from the top of the previous filling cavity to the separation cavity along the flowing direction and then flows from the bottom of the separation cavity to the next filling cavity. This further enhances the adsorption of the filler and the degradation of pollutants in the water.

In addition, the air floatation separation device is positioned at the bottom of the solid-liquid separation cavity, and the liquid positioned in the solid-liquid separation cavity surges upwards; an aeration and oxygen increasing device is correspondingly arranged in the solid-liquid separation cavity. Specifically, the air flotation separation device uses a gas-liquid mixing pump and a diffusion tube to compress air to escape from the tube surface in the form of micro bubbles into water, so that the air is attached to suspended particles in the form of highly dispersed micro bubbles to cause the density of the air to be lower than that of the water, and the air floats on the water surface by utilizing buoyancy, thereby realizing solid-liquid separation.

Of course, if an aeration and oxygenation device is correspondingly arranged in the solid-liquid separation cavity, specifically, a special aeration pump is selected, air compression, an atmospheric ejector, a stirrer and a mixer are not needed, the gas and the liquid can be fully mixed, and the dissolving efficiency can reach 80-100% at most. When a large amount of micro bubbles are injected into water, the dissolved oxygen concentration of the water body can be quickly improved, the growth of aerobic bacteria in a subsequent filling chamber is facilitated, and the decomposition of organic matters in the water is accelerated; and meanwhile, anaerobic bacteria breeding is inhibited, water deterioration is effectively controlled, and the water is kept clean.

Preferably, the backwashing system comprises a backwashing pipeline which is positioned at the same side of the case and can be respectively communicated with the packing cavity and the solid-liquid separation cavity, and a plurality of control valves which are correspondingly arranged on the backwashing pipeline and are correspondingly arranged with the packing cavity and the solid-liquid separation cavity.

Furthermore, the back washing pipeline comprises a back washing pipeline branch pipe and a back washing main pipe, and the control valve is correspondingly arranged on the back washing pipeline branch pipe.

Simultaneously, this application is at the in-process of back flush, and the water of back flush needs to flow back to the regulation pond, purifies once more through entire system, can not directly discharge.

Due to the implementation of the technical scheme, compared with the prior art, the invention has the following advantages:

on one hand, the invention can effectively realize the collection of the floating objects in the water, avoid the blockage and simultaneously improve the efficiency and the quality of water purification; on the other hand can make water and the abundant contact of filler, be favorable to the formation of biofilm formation, and aeration oxygenation back simultaneously can improve water dissolved oxygen concentration fast, helps promoting follow-up filler room aerobic bacteria growth for decompose aquatic organic matter, also restrain anaerobic bacteria and breed moreover, effective control water worsens, keeps the water clean.

Drawings

FIG. 1 is a schematic structural view of a water ecological purifier of the present invention;

FIG. 2 is a schematic front view of FIG. 1;

FIG. 3 is a schematic sectional view taken along line A-A in FIG. 2;

FIG. 4 is a left side schematic view (partially omitted) of FIG. 1;

FIG. 5 is a schematic top view of FIG. 1;

FIG. 6 is a schematic sectional view taken along line B-B in FIG. 5;

FIG. 7 is a schematic sectional view taken along line C-C in FIG. 5;

wherein: j. a chassis; 10. a water inlet; 11. a water outlet; 1a, a water treatment area; 10a, a solid-liquid separation cavity; 11a, a packing cavity; 12a, a drainage cavity; j1, a water purification system; 2. an air flotation separation device; 3. a filler filtration device; 30. a filler; 1b, a floating object collecting area; 10b, a floater collecting cavity; g1, a first separator; g2, a second separator; g. a compartment; k. a communicating hole; 1c, a communicating pipe; 4. an aeration and oxygenation device; 5. a water quality monitoring system 50 and a water quality monitoring unit; 51. an automatic dosing unit; 510. a medicine chest; 511. a pipeline; 512. a medicine bin; 513. a stirrer; 514. a dispensing pipeline;

j2, backwash system; j20, a backwash pipeline; j200, back flushing branch pipes; j201, backwashing the main pipe; j21, control valve.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

As shown in fig. 1, the method for treating town sewage by biological and ecological purification of water according to the present embodiment uses a water ecological purifier comprising a cabinet j having a water inlet 10 and a water outlet 11, a water purification system j1 and a backwashing system j 2.

Referring to fig. 2 to 4, a water treatment area 1a and a floating object collection area 1b are formed inside the case j, the water inlet 10 is located at the bottom of the case j, the water outlet 11 is located at the top of the case j, and the water inlet 10 and the water outlet 11 are located at the front and the back of the case j, respectively.

In this example, the water inlet 10 and the water outlet 11 are diagonally distributed.

Specifically, the water treatment area 1a includes a solid-liquid separation chamber 10a disposed at the water inlet 10 of the cabinet j, a packing chamber 11a sequentially distributed and communicated from the water inlet 10 to the water outlet 11, and a drainage chamber 12a communicated with the packing chamber 11a near the water outlet 11.

The floater collecting area 1b comprises a floater collecting cavity 10b, wherein the floater collecting cavity 10b is communicated with the solid-liquid separation cavity 10a from the top, and the packing cavity 11a is communicated with the floater collecting cavity 10b from the top through a communicating pipe 1 c.

Specifically, the floater collecting cavity 10b and the solid-liquid separation cavity 10a are arranged side by side, and the floater collecting cavity 10b, the solid-liquid separation cavity 10a and the plurality of packing cavities 11b arranged side by side are arranged from the water inlet 10 to the water outlet 11. The layout is reasonable in spatial distribution, and the miniaturization of the water purification system j1 is facilitated.

The water purification system j1 comprises an air flotation separation device 2 and a filler filtering device 3 which are positioned in a water treatment area 1a, and an aeration oxygenation device 4 communicated with a water inlet pipeline of the air flotation separation device 2, wherein the air flotation separation device 2 is positioned in a solid-liquid separation cavity 10a, the filler filtering device 3 comprises a plurality of fillers 30, and at least one filler 30 is arranged in each filler cavity 11 a.

As for the filler 30, commonly used species are: phosphorus removal, nitrogen removal, oxygen enhancement and the like.

In this embodiment, there are three packing cavities 11a, and each packing cavity 11a is formed with a corresponding phosphorus removal, nitrogen removal or oxygen increase packing 30. Here, it should be noted that the kind of the filler may be various, and although the three kinds of fillers are disclosed in the present embodiment, the present invention is not limited to only these kinds of fillers.

In order to reasonably implement the water flow between the plurality of stuffing chambers 11b, and with reference to fig. 5 to 7, a first partition g1 and a second partition g2 are formed between every two adjacent stuffing chambers 11a, wherein a compartment g is formed between the first partition g1 and the second partition g2, and the compartment g is communicated with the two adjacent stuffing chambers 11b from the top and the bottom respectively. Through the setting that separates the chamber, realize the intercommunication between a plurality of cavitys in the water treatment district on the one hand, on the other hand ensures that the biomembrane on the filler can adsorb degradation aquatic pollutants, improves water quality of water, and the river course is discharged in the last effluent overflow.

Specifically, the top of the first partition g1 is disconnected from the top of the chassis 1 to form an overflow port, the bottom of the second partition g2 forms a communication hole k, and water overflows from the top of the previous stuffing chamber to the compartment in the flow direction and then flows from the bottom of the compartment to the next stuffing chamber. This further enhances the adsorption of the filler and the degradation of pollutants in the water.

In order to better purify the water quality by the filler 30, in this example, the three communication holes k are distributed in a staggered manner or in a triangular manner in the width direction of the housing 1.

Meanwhile, in the present embodiment, the liquid in the solid-liquid separation chamber 10a flows upward, and an aeration and oxygen-increasing device 4 is correspondingly disposed in the solid-liquid separation chamber 10 a.

Specifically, the air flotation separation device 2 uses a gas-liquid mixing pump and a diffusion tube to compress air to escape from the tube surface in the form of micro bubbles into water, so that the air is attached to suspended particles in the form of highly dispersed micro bubbles, the density of the air is lower than that of the water, and the air floats on the water surface by utilizing buoyancy, thereby realizing solid-liquid separation.

Specifically, the aeration and oxygenation device 4 adopts a special aeration pump, air compression, an atmospheric ejector, a stirrer and a mixer are not needed, the gas and the liquid can be fully mixed, and the dissolving efficiency can reach 80-100% at most. When a large amount of micro bubbles are injected into water, the dissolved oxygen concentration of the water body can be quickly improved, the growth of aerobic bacteria in a subsequent filling chamber is facilitated, and the decomposition of organic matters in the water is accelerated; and meanwhile, anaerobic bacteria breeding is inhibited, water deterioration is effectively controlled, and the water is kept clean.

In this example, the water purification system j1 further comprises a water quality monitoring system 5, wherein the water quality monitoring system 5 comprises a water quality monitoring unit 50 and an automatic dosing unit 51 communicated with the water quality monitoring unit 50, wherein the water quality monitoring unit is communicated with the water inlet or/and the water outlet. Further purifying the water quality by the medicine.

Specifically, intelligent monitoring: the method comprises the steps of continuously or regularly monitoring the pollution index change of a water environment monitoring section and the running state of equipment by using modern sensing technology, automatic measurement technology, automatic control technology, computer application technology, network communication and other technologies, feeding monitoring results back to a master control room or a designated client, and timely finding abnormal changes of water quality by a user according to the feedback results to timely give early warning for preventing downstream water quality pollution and take countermeasures. The intelligent central control system is carried on the 4G network, realizes signal transmission and terminal control of the PLC to the operating equipment, uploads a detection result, provides people to monitor the running condition in real time, facilitates timely emergency schemes under special conditions, and the like, is easy to implement, and is not elaborated herein.

The automatic medicine adding unit 51 includes a plurality of medicine boxes 510 arranged side by side, a pipe 511 for communicating each of the medicine boxes 510 with the drain chamber 12a, and a medicine adding pump. According to different water qualities, different medicaments are added.

Then, in order to realize automatic medicine dispensing, the automatic medicine adding unit 51 in this example further includes a medicine bin 512 provided for each medicine box 510, a stirrer 513, and a medicine dispensing line 514 communicating with each medicine box 510, wherein the medicine bin 512 can discharge medicines into the corresponding medicine box 510, and the medicine dispensing line 514 communicates with the drain chamber 12 a. Specifically, the adding amount of the medicament is completely determined according to the information acquired by the water quality monitoring unit, so that the medicament cabin and the medicament dispensing pipeline are used for dispensing different medicaments according to the information acquired by the water quality monitoring unit. So, do not need outside water receiving, simultaneously, the medical kit also with arrange water cavity intercommunication, consequently, liquid after dispensing flows back to arranging water cavity again, not only conveniently dispenses, more is favorable to the rapid mixing of drainage intracavity water and medicine moreover, so to ensure to accomplish the log raft after the high-quality purification and to the river course.

That is, the dispensing in this embodiment is performed according to the information acquired by the water quality monitoring unit, and the dispensed medicines are directly mixed in the drainage cavity 12a, which is beneficial to the final purification treatment of the medicines on water and prevents the medicines from being absorbed by the filler 30.

Meanwhile, the dispensing pipe 514 is located above the pipe 511, because the water located at the upper layer is definitely cleaner than the water located at the lower layer, which is not only beneficial for dispensing, but also beneficial for mixing the water in the dosing and discharging cavity 12 a.

Then, the water quality monitoring unit 50 in this example also has a function of evaluating the purifying ability of the packing 30 based on the quality of the discharged water in the drain chamber 12a so as to backwash the packing chamber 11a and the solid-liquid separation chamber 10a at any time.

Specifically, the backwash system j2 includes a backwash pipeline j20 located on the same side of the casing 1 and capable of being respectively communicated with the packing chamber 11a and the solid-liquid separation chamber 10a, and a plurality of control valves j21 correspondingly arranged on the backwash pipeline j20 and corresponding to the packing chamber 11a and the solid-liquid separation chamber 10 a.

The backwash pipeline j20 comprises backwash branch pipes j200 communicated with the packing chamber 11a and the solid-liquid separation chamber 10a one by one, and backwash main pipes j201 for connecting and communicating the plurality of backwash branch pipes j200 in series, wherein a control valve j21 is correspondingly arranged on each backwash branch pipe j 200.

Meanwhile, it should be noted that the backwash water needs to flow back to the storage tank and be purified again by the whole system, and cannot be directly discharged.

In conclusion, the water ecological purifier integrates air flotation separation, aeration and oxygenation, filler filtration, biological purification and intelligent detection, solves the problems of simple function, equipment decentralization, complex installation, difficult operation and maintenance and the like of related products in the market at present, realizes multiple functions and greatly reduces the investment cost.

Regarding air flotation separation: the air floatation system compresses air to escape from the tube surface in the form of micro bubbles through a gas-liquid mixing pump and a diffusion tube, so that the air is attached to suspended particles in the form of highly dispersed micro bubbles to cause the density of the air to be lower than that of water, and the air floats on the water surface by utilizing buoyancy, thereby realizing solid-liquid separation.

Regarding the filler filtration: the water purification filter material with large specific surface area, strong adsorption capacity and convenient film formation is arranged in the packing chamber, most suspended matters and colloid can be removed by filtration, and partial organic matters, nitrogen, phosphorus and other substances are removed at the same time, so that the filter bed has large sewage interception capacity and long backwashing period.

Regarding aeration oxygenation: the special aeration pump is selected, air compression, an atmospheric ejector, a stirrer and a mixer are not needed, the gas and the liquid can be fully mixed, and the dissolving efficiency can reach 80-100 percent at most. When a large amount of micro bubbles are injected into water, the dissolved oxygen concentration of the water body can be quickly improved, the growth of aerobic bacteria in a subsequent filling chamber is facilitated, and the decomposition of organic matters in the water is accelerated; and meanwhile, anaerobic bacteria breeding is inhibited, water deterioration is effectively controlled, and the water is kept clean.

Regarding biological purification: the microorganisms in the water body take the filler as a carrier, rapidly grow and reproduce and form a biological membrane, and the metabolic activity of the microorganisms consumes COD, BOD, NH3-N and TP in the sewage, thereby effectively improving the water quality.

With regard to intelligent monitoring: the method comprises the steps of continuously or regularly monitoring the pollution index change of a water environment monitoring section and the running state of equipment by using modern sensing technology, automatic measurement technology, automatic control technology, computer application technology, network communication and other technologies, feeding monitoring results back to a master control room or a designated client, and timely finding abnormal changes of water quality by a user according to the feedback results to timely give early warning for preventing downstream water quality pollution and take countermeasures. Wisdom central control system realizes that PLC is to operating device's signal transmission and terminal control and can upload the testing result under the carrying of 4G network, supplies people real-time supervision operational aspect, and the convenience is in time made emergent scheme etc. under the special circumstances.

Regarding water purification: the gas floating technology, the oxygen increasing technology, the biomembrane technology and other technologies are integrated, and the water quality index can be effectively improved under the synergistic action of the multiple water quality purification technologies, and the stability of the water quality of the water body can be kept for a long time.

In addition, in the embodiment, the water purification system j1 is also provided with a solar power supply system, so that the environment is protected and the energy is saved; the installation is simple and convenient; the operation management requirement is low; the system is simple and the overall cost is low.

Simultaneously, water purification system collects little nanometer system oxygen system, air supporting piece-rate system, biofilm carrier system, water quality monitoring system, wisdom central control system in an organic whole, and has two kinds of mode: A. for use in ships; B. and (4) land use.

When in use on a ship, the method comprises the following steps:

s1, sewage is sucked into the air flotation chamber by the pump, micro bubbles generated by the dissolved air pump are uniformly dispersed in water by the closed-loop release pipeline at the air flotation bottom, suspended substances and oily substances are driven to be separated from the water body and are discharged by the slag discharge equipment, the possibility of blockage of a follow-up biological filler device is reduced, and the transparency of the water body is improved.

S2, enabling the effluent of the air flotation chamber to overflow into a first-stage filler filter, enabling the water flow to pass through a filler layer from top to bottom, intercepting pollutants on an upper filter bed, enabling the effluent to flow through a third-stage filler filter in the same way, enabling the fillers to filter fine impurities in sewage, enabling a biomembrane on the fillers to adsorb and degrade pollutants in the water, improving the water quality of the water body, and finally discharging the overflow of the effluent into a river channel;

s3, a water sample is extracted from the water outlet of the device and enters the intelligent water quality monitoring system, the water quality condition of the water outlet of the device is monitored in real time or at regular time, the monitoring result is fed back to the intelligent central control system, the control system makes analysis and judgment according to the result, the backwashing time interval is adjusted in time, and the stability of the water quality is maintained.

When the land is used, the method comprises the following steps:

(1) the interception and the filtration of carrying out great particle diameter floater to sewage through the grid, and sewage flows into closed sewage regulation well, opens through level gauge control water pump and stops, from sewage regulation well with sewage pump sending to air supporting chamber after that, the micro bubble that the dissolved air pump produced is by air supporting bottom closed loop release pipeline homodisperse in aquatic, drive suspended solid and oily material and break away from the water, get rid of through slag discharging equipment, reduce the possibility that follow-up biofilm carrier device blockked up, improve water transparency.

(2) The effluent overflow of the air flotation chamber enters a first-stage filler filter, water flows downwards through a filler layer from top to bottom, pollutants are intercepted on an upper filter bed, the effluent flows through a three-stage filler filter in the same way, when the filler filters fine impurities in sewage, a biomembrane on the filler can adsorb and degrade pollutants in water, the water quality is improved, and the final effluent overflow is discharged into a river channel.

(3) The water outlet of the device extracts a water sample to enter the intelligent water quality monitoring system, the water quality condition of the device is monitored in real time or at regular time, a monitoring result is fed back to the intelligent central control system, the control system makes analysis and judgment according to the result, the backwashing time interval is adjusted in time, and the stability of the water quality is maintained.

In addition, no matter whether the system is carried by a ship or used on land, the discharged sludge is discharged to a specific place, namely a sludge pool or a sludge storage mechanism outside the water ecological purifier, and meanwhile, backwashing water needs to flow back to the storage tank and is purified again through the whole system, and the backwashing water cannot be directly discharged.

The present invention has been described in detail in order to enable those skilled in the art to understand the invention and to practice it, and it is not intended to limit the scope of the invention, and all equivalent changes and modifications made according to the spirit of the present invention should be covered by the present invention.

Claims

1. A treatment method suitable for biological and ecological purification of town sewage is characterized in that: the processing method comprises the following steps:

s1, solid-liquid separation

s2, biological purification

2. The method for the biological and ecological purification of urban effluents according to claim 1, characterized in that it comprises the following steps: the treatment method comprises a ship-borne mode and a land use mode, wherein in the ship-borne mode, sewage is purified according to the steps S1 and S2 and then is discharged to a river channel from a water outlet; when the land use mode is adopted, in S1, the large-particle-size floaters are intercepted and filtered from the sewage through the grating, the sewage flows into the closed sewage regulation and storage well, the start and stop of the water pump are controlled through the liquid level meter, and the sewage is pumped from the sewage regulation and storage well to the air flotation chamber for solid-liquid separation.

3. The method for the biological and ecological purification of urban effluents according to claim 2, characterized in that it comprises the following steps: the processing method further comprises the following steps: s3, monitoring water quality

The water sample is extracted from the water outlet and enters the intelligent water quality monitoring system, the water quality condition of the water discharged by the equipment is monitored in real time or at regular time, the monitoring result is fed back to the intelligent central control system, the control system makes analysis and judgment according to the result, the backwashing time interval is adjusted in time, the stability of the water quality is maintained, the backwashing water needs to flow back to the regulation and storage tank, the water is purified again through the whole system and cannot be directly discharged, and meanwhile, the sludge is discharged to a sludge tank or a sludge storage mechanism.

4. The method for the biological and ecological purification of urban effluents according to claim 1, characterized in that it comprises the following steps: and a water outlet end part of the multi-stage filling cavity is provided with a water discharging cavity, and the biological purification process is also provided with a water quality monitoring system, wherein a medicament is automatically added into the water discharging cavity according to the water quality entering the air flotation chamber or discharged from the water discharging cavity.

5. The method for the biological and ecological purification of urban effluents according to claim 4, characterized in that it comprises the following steps: the water quality monitoring system comprises a water quality monitoring unit and an automatic dosing unit communicated with the water quality monitoring unit, wherein the water quality monitoring unit is communicated with a water inlet or/and a water outlet, and the automatic dosing unit comprises a plurality of medicine boxes arranged side by side, a pipeline used for filling the medicine boxes with the drainage cavity and a dosing pump.

6. The method for the biological and ecological purification of urban effluents according to claim 5, characterized in that it comprises the following steps: the automatic medicine adding unit further comprises a medicine bin, a stirrer and a medicine dispensing pipeline, the medicine bin is arranged corresponding to each medicine box, the medicine dispensing pipeline is communicated with each medicine box, the medicine bins can discharge medicines to the corresponding medicine boxes, and the medicine dispensing pipeline is communicated with a water outlet cavity of the water discharging cavity; the medicine dispensing pipeline is located above the pipeline, and corresponding medicine boxes are introduced from the bottom, wherein medicines and water are mixed by the stirrer to dispense medicines.

7. The method for the biological and ecological purification of urban effluents according to claim 1, characterized in that it comprises the following steps: the water ecological purifier adopted by the treatment method comprises a case with a water inlet and a water outlet, a water purification system and a backwashing system, and is characterized in that: a water treatment area and a floater collecting area are formed in the case, wherein the water treatment area comprises a solid-liquid separation cavity arranged at the water inlet and a filler cavity which is sequentially distributed from the water inlet to the water outlet and communicated with the water inlet, the floater collecting area comprises a floater collecting cavity, the floater collecting cavity is communicated with the solid-liquid separation cavity from the top, and the filler cavity is communicated with the floater collecting cavity from the top through a communicating pipe;

the water purification system comprises an air floatation separation device and a filler filtering device which are positioned in the water treatment area, and an aeration and oxygenation device communicated with a water inlet pipeline of the air floatation separation device, wherein the air floatation separation device is positioned in the solid-liquid separation cavity, the filler filtering device comprises a plurality of fillers, and each filler cavity is at least internally provided with one filler.

8. The method for the biological and ecological purification of urban effluents according to claim 7, characterized in that it comprises the following steps: the floater collecting cavity and the solid-liquid separation cavity are arranged side by side, and the floater collecting cavity, the solid-liquid separation cavity and the plurality of packing cavities are arranged side by side from the water inlet to the water outlet.

9. The method for the biological and ecological purification of urban effluents according to claim 7 or 8, characterized in that: and a first partition plate and a second partition plate are formed between every two adjacent packing cavities, wherein a separation cavity is formed between the first partition plate and the second partition plate, and the separation cavity is communicated with the two adjacent packing cavities from the top and the bottom respectively.

10. The method for the biological and ecological purification of urban effluents according to claim 7, characterized in that it comprises the following steps: the air floatation separation device is positioned at the bottom of the solid-liquid separation cavity, and liquid positioned in the solid-liquid separation cavity surges upwards, or the aeration oxygenation device is correspondingly arranged in the solid-liquid separation cavity; the backwashing system comprises a backwashing pipeline which is positioned at the same side of the case and can be respectively communicated with the packing cavity and the solid-liquid separation cavity, and a plurality of control valves which are correspondingly arranged on the backwashing pipeline and are correspondingly arranged with the packing cavity and the solid-liquid separation cavity.