CN219807856U

CN219807856U - Wastewater treatment system

Info

Publication number: CN219807856U
Application number: CN202320236517.5U
Authority: CN
Inventors: 任允军
Original assignee: Shanghai Fuzi Environmental Protection Technology Co ltd
Current assignee: Shanghai Fuzi Environmental Protection Technology Co ltd
Priority date: 2023-02-16
Filing date: 2023-02-16
Publication date: 2023-10-10
Anticipated expiration: 2033-02-16

Abstract

The utility model provides a wastewater treatment system which comprises a collecting tank, a pH adjusting tank, a buffer tank, a hydrolysis acidification tank, a biochemical tank and an MBR filter tank, wherein the collecting tank, the pH adjusting tank, the buffer tank, the hydrolysis acidification tank, the biochemical tank and the MBR filter tank are sequentially connected, the wastewater treatment system further comprises a disinfection tank, the disinfection tank is connected with the MBR filter tank, and a liquid separation mechanism is connected to the MBR filter tank. This wastewater treatment system, through the sewage that will be discharged flows automatically and gets into the collecting vat, in the sewage in the collecting vat gets into pH equalizing basin, the effluent flows automatically and gets into buffer tank and hydrolytic acidification tank in proper order after the pH value of sewage is adjusted to neutrality, the effluent flows automatically and gets into the biochemical pond after hydrolytic acidification tank reaction, the effluent flows automatically and gets into the MBR filtering pond after the biochemical pond reaction is over, liquid separation mechanism separates the sewage after the MBR filtering pond is handled, sewage inflow disinfection pond, sewage is through disinfecting back from flowing into the nanotube and is discharged, this wastewater treatment system can be to the solid in the waste water and the targeted treatment of liquid.

Description

Wastewater treatment system

Technical Field

The utility model relates to the technical field of wastewater treatment, in particular to a wastewater treatment system.

Background

With the development of scientific technology, the construction quantity of various laboratories is continuously increased, the laboratory wastewater discharge amount is not large, the pollution is easy to ignore, the laboratory is a typical serious pollution source, the wastewater generated in the existing laboratory is directly discharged into an underground sewage pipe network after being generally not treated or simply treated, and is sent to a large-scale domestic sewage treatment plant for centralized treatment, and the laboratory sewage is inconvenient to reach the standard for treatment due to complex components, particularly heavy metals such as lead, mercury, cadmium, hexavalent chromium, copper, antimony, ferrous iron, aluminum, manganese and the like, a large number of pathogenic pathogens such as bacteria, viruses, worm eggs and the like, chemical agents, radioactive isotopes and the like.

In the existing wastewater treatment process, wastewater, sludge impurities in the wastewater and the like are treated together, so that the wastewater for separating the impurities is easy to cause pipeline blockage and the like in the concentrated discharge process, and the sludge impurities in the wastewater which are not subjected to effective solid-liquid separation can not be fully utilized, so that waste of production resources is caused, and further the wastewater treatment cost is high, so that the popularization is not facilitated.

In view of the foregoing, there is an urgent need for a wastewater treatment system that can perform solid-liquid separation on wastewater, can treat solid-liquid wastewater specifically, and can reduce treatment costs.

Disclosure of Invention

In order to solve the problems that sludge impurities in wastewater in the existing wastewater treatment system affect the treatment effect and the treatment cost is high, the utility model provides a wastewater treatment system.

According to one object of the present utility model, there is provided a wastewater treatment system comprising: the device comprises a collecting tank, a pH adjusting tank, a buffer tank, a hydrolysis acidification tank, a biochemical tank and an MBR filter tank, wherein the collecting tank, the pH adjusting tank, the buffer tank, the hydrolysis acidification tank, the biochemical tank and the MBR filter tank are sequentially connected;

the disinfection pond, the disinfection pond with the MBR filtering pond is connected, be connected with liquid separation mechanism on the MBR filtering pond, so that sewage in the MBR filtering pond flows into in the disinfection pond, the discharge end in disinfection pond is connected with the nano tube.

Preferably, the liquid separation mechanism includes:

the self-priming pump is positioned in the MBR filter;

the electromagnetic valve is positioned in the MBR filter tank, the self-priming pump, the electromagnetic valve and the disinfection tank are sequentially connected, the electromagnetic valve is a back flushing electromagnetic valve, and a timing start-stop module is arranged on the electromagnetic valve.

Preferably, the liquid separation mechanism further comprises:

the filter floating ball is arranged in the MBR filter, and the filter floating ball is respectively in control connection with the self-priming pump and the electromagnetic valve.

Preferably, the liquid separation mechanism further comprises:

and the electric contact negative pressure meter is respectively connected with the self-priming pump and the electromagnetic valve in a control way.

Preferably, a sludge circulating pump is arranged in the MBR filter tank, and the timing module is arranged on the sludge circulating pump.

Preferably, a disinfection dosing pump and a disinfection fan are arranged in the disinfection tank, and the disinfection dosing pump is interlocked with the disinfection fan.

Preferably, an aeration fan is arranged in the biochemical tank, and a timing module is arranged in the aeration fan.

Preferably, the pH regulating tank is provided with a pH on-line instrument, an alkaline dosing pump and an acidic dosing pump, and the pH on-line instrument is respectively connected with the alkaline dosing pump and the acidic dosing pump in a control manner.

Preferably, a liquid level floating ball is arranged in the wastewater collecting barrel, the wastewater collecting barrel is connected with the pH regulating tank through a submersible sewage pump, and the liquid level floating ball is in control connection with the submersible sewage pump.

Preferably, the wastewater treatment system further comprises: the sludge tank is connected with the MBR filter, a filtrate pump and a sludge floating ball are arranged in the sludge tank, and the filtrate pump is interlocked with the sludge floating ball;

and the discharge end of the sludge tank is sequentially connected with a sludge pump and a plate-and-frame filter press.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the wastewater treatment system, discharged wastewater automatically flows into the collecting tank, the wastewater in the collecting tank enters the pH adjusting tank, the discharged water automatically flows into the buffering tank and the hydrolysis acidification tank sequentially after the pH value of the wastewater is adjusted to be neutral, the discharged water automatically flows into the biochemical tank after the reaction of the hydrolysis acidification tank is finished, the discharged water automatically flows into the MBR filter after the reaction of the biochemical tank is finished, the wastewater after the treatment of the MBR filter is separated by the liquid separation mechanism, the wastewater flows into the disinfection tank, and the wastewater is automatically flowed into the nano tube for discharge after disinfection, so that the wastewater treatment system can treat solids and liquid in the wastewater in a targeted manner, the wastewater treatment effect is improved, the sludge in the wastewater can be recycled conveniently, and the treatment cost is reduced;

2. according to the wastewater treatment system, the sewage is treated by using automatic control equipment such as the filter floating ball, the self-priming pump and the electromagnetic valve, so that the treatment efficiency of the sewage is improved;

3. according to the wastewater treatment system, the sludge after the MBR filter tank in the system discharges sewage is dehydrated and compressed through the plate-and-frame filter press, so that the sludge is convenient to transfer and use.

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings.

Drawings

FIG. 1 is a schematic diagram of a wastewater treatment system according to the present utility model.

Detailed Description

The following description is presented to enable one of ordinary skill in the art to practice the utility model. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the utility model defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.

Example 1

Referring to fig. 1, the present utility model provides a technical solution: a wastewater treatment system, comprising:

the device comprises a collecting tank, a pH adjusting tank, a buffer tank, a hydrolysis acidification tank, a biochemical tank and an MBR filter tank, wherein the collecting tank, the pH adjusting tank, the buffer tank, the hydrolysis acidification tank, the biochemical tank and the MBR filter tank are sequentially connected;

In one embodiment of the utility model, a wastewater collection tank is arranged in the collection tank.

The operation process flow of the wastewater treatment system is as follows: the sewage discharged into the sewage self-flowing collection tank enters the pH adjusting tank, the sewage self-flowing water after the pH value of the sewage is adjusted to be neutral sequentially enters the buffer tank and the hydrolysis acidification tank, the water discharged after the reaction of the hydrolysis acidification tank enters the biochemical tank, the water discharged after the reaction of the biochemical tank enters the MBR filter tank, the sewage after the treatment of the MBR filter tank is separated by the liquid separation mechanism, the sewage flows into the disinfection tank, and the sewage is discharged through the nano tube after disinfection.

The wastewater treatment system can treat solids and liquid in wastewater in a targeted manner, wherein the liquid part can reach the discharge standard, so that the treatment effect on the wastewater is improved, the sludge in the wastewater is conveniently recycled, and the treatment cost is reduced.

Further, the liquid separation mechanism includes:

the self-priming pump is positioned in the MBR filter;

The MBR filter tank performs solid-liquid separation through the self-priming pump, and water is produced by the self-priming pump and flows into the disinfection tank, so that efficient transfer treatment of sewage after the solid-liquid separation is realized, wherein the self-priming pump is matched with an electromagnetic valve for use, the self-priming pump can be linked with the electromagnetic valve, after the self-priming pump stops running, the self-priming pump is timed to open and close the module and control the electromagnetic valve to be closed in a delayed manner, so that the sewage in the self-priming pump and in a connecting pipeline can be fully discharged, the sewage is prevented from remaining in the pipeline, and the sewage cannot be discharged after standard treatment.

The interval duration set by the timing start-stop module can be adjusted according to actual requirements, and in one embodiment of the utility model, the interval duration set by the timing start-stop module is 2 seconds.

In order to facilitate cleaning and maintenance of the filter unit in the MBR filter in the system, in one embodiment of the utility model, the filter mechanism of the MBR filter is an MBR membrane.

Furthermore, the electromagnetic valve is a back flush electromagnetic valve, and by arranging the back flush electromagnetic valve, when the membrane body arranged in the MBR filter tank needs to be cleaned and maintained, the system can be matched with the back flush electromagnetic valve to carry out back flush cleaning on the filter unit in the MBR filter tank.

Further, the liquid separation mechanism further includes: and the electric contact negative pressure meter is respectively connected with the self-priming pump and the electromagnetic valve in a control way.

Through increasing the electric contact negative pressure table, the electric contact negative pressure table is MBR filtering pond membrane body protection device, and the electric contact negative pressure table can monitor MBR filtering pond internal membrane body pressure value, and then right the self priming pump with the solenoid valve is controlled, avoids the MBR filtering pond internal membrane body to lead to the MBR filtering pond internal membrane body to damage because of the pressure is too big, influences the sewage treatment in the MBR filtering pond.

In one embodiment of the utility model, when the pressure value is higher than the set value, the electric contact negative pressure meter is used for controlling the self-priming pump and the electromagnetic valve to be connected, the self-priming pump stops running firstly, the electromagnetic valve is closed after a preset time delay, the electromagnetic valve is controlled to be closed by the timing opening and closing module in a delayed mode, and the preset time of the timing opening and closing module is 2 seconds.

In the prior art, the wastewater treatment is mainly carried out through manual equipment regulation and control, the manual operation efficiency is lower, the labor cost is higher, the stability of the wastewater quality in the system cannot be ensured due to manual operation errors, the risk of environmental pollution exists, and in order to avoid the problems, the treatment efficiency of the wastewater in the wastewater treatment system is improved.

Example 2

Further, the liquid separation mechanism further includes: the filter floating ball is arranged in the MBR filter, and the filter floating ball is respectively in control connection with the self-priming pump and the electromagnetic valve.

Specifically, the filtering pond floater is provided with two operating condition, is start-up state and shut-down state respectively:

when the MBR filter liquid level reaches a preset high value, the filter floating ball is in a starting state, and the filter floating ball controls the electromagnetic valve and the self-priming pump to start;

when the MBR filter liquid level reaches a preset low value, the filter floating ball is in a closed state, and the filter floating ball controls the electromagnetic valve and the self-priming pump to be closed.

Through increasing the filtering pond floater, the filtering pond floater can monitor the liquid level of the interior sewage of MBR filtering pond to further control the solenoid valve with the start and stop of self priming pump realizes the automatic control to the interior sewage of MBR filtering pond, has saved the human cost, and then is convenient for use widely to this system.

In order to ensure the sludge concentration in the MBR filter, the MBR filter is convenient for effectively treating the internal sludge and sewage, and further, a sludge circulating pump is arranged in the MBR filter.

In order to ensure that the concentration of the sludge in the MBR filter tank is kept uniform, and the energy consumption of the sludge circulating pump is saved, the timing module is further arranged on the sludge circulating pump.

Further, a disinfection dosing pump and a disinfection fan are arranged in the disinfection tank, and the disinfection dosing pump is interlocked with the disinfection fan.

Through increasing disinfection charge pump, disinfection charge pump can carry out automatic interpolation to sewage treatment's disinfection medicament, further increases the disinfection fan, and the disinfection fan can carry out aeration treatment to the sewage in the disinfection pond, wherein the linkage disinfection charge pump with the disinfection fan can open and close in step, realizes the inside sewage of disinfection pond and adds the aeration treatment in the same time of medicine, and then promotes the mixing efficiency between sewage and the medicament, realizes the abundant treatment to sewage in the disinfection pond, shortens sewage and reaches the emission standard time.

Further, an aeration fan is arranged in the biochemical tank, and a timing module is arranged in the aeration fan.

Through increasing the aeration fan, the aeration fan can accelerate the flow velocity of sewage in the biochemical pond, and then shortens the reaction time of inside sewage, further increases the timing module, can set up the interval time that the aeration fan starts and stops.

Further, the pH regulating tank is provided with a pH on-line instrument, an alkaline dosing pump and an acidic dosing pump, and the pH on-line instrument is respectively connected with the alkaline dosing pump and the acidic dosing pump in a control mode.

In one embodiment of the present utility model, the pH online meter is provided with four working states, which are a first starting state, a second starting state, a first closing state and a second closing state respectively:

when the pH value of raw water is lower than a set low value, the pH online instrument is in a first starting state, and the pH online instrument controls the alkaline dosing pump to start;

when the pH value of raw water is higher than a set low value, the pH online instrument is in a first closing state, and the pH online instrument controls the alkaline dosing pump to be closed;

when the pH value of the raw water is higher than a set low value, the pH online instrument is in a second starting state, and the pH online instrument controls the acidic dosing pump to start;

when the pH value of the raw water is higher than a set low value, the pH online instrument is in a second closing state, and the pH online instrument controls the acidic dosing pump to be closed.

Further, a liquid level floating ball is arranged in the wastewater collecting barrel, the wastewater collecting barrel is connected with the pH adjusting tank through a submersible sewage pump, and the liquid level floating ball is in control connection with the submersible sewage pump.

In one embodiment of the present utility model, the liquid level floating ball is provided with two working states, namely a start state and a close state:

when the liquid level reaches a set high value, the liquid level floating ball controls the submersible sewage pump to start;

and when the liquid level is lower than a set low value, the liquid level floating ball controls the submersible sewage pump to be closed.

The utility model fully processes the sludge after sewage discharge, and is convenient for transferring and using the sludge, and examples are as follows.

Example 3

Further, the wastewater treatment system further comprises a sludge tank, wherein the sludge tank is connected with the MBR filter, a filtrate pump and a sludge floating ball are arranged in the sludge tank, and the filtrate pump is interlocked with the sludge floating ball.

The sludge in the MBR filter is stored through the sludge tank, the automatic control of the sludge in the sludge tank is realized through the cooperation of the filtrate pump and the sludge floating ball, wherein the sludge floating ball monitors the liquid level of the sludge in the sludge tank, and when the liquid level of the sludge in the sludge tank exceeds a preset high value, the sludge floating ball is in control connection with the filtrate pump to carry out filtrate treatment on the sludge in the sludge tank.

Further, a sludge pump and a plate-and-frame filter press are sequentially connected to the discharge end of the sludge tank.

The sludge inside the sludge pond is efficiently pumped out through the sludge pump, the sludge is further pressed into cakes through the plate-and-frame filter press, and the sludge cakes are stacked and stored, so that the outward movement of the sludge cakes is finally realized.

Wherein the plate-and-frame filter press is the prior art, and the dehydration process is as follows: the plate and frame of the plate-and-frame filter press are alternately arranged, two sides of the filter plate are covered with filter cloth, the plate and the frame are pressed by using a pressing device, namely, a pressing filter chamber is formed between the plate and the frame, small holes are formed in the same positions in the middle of the upper ends of the plate and the frame, a channel is formed after the pressing, sludge pressurized to 0.2-0.4 MPa enters the pressing filter chamber through the channel, grooves are engraved on the surface of the filter plate, a pore channel for discharging filtrate is drilled at the lower end of the filter plate, and the filtrate is discharged out of the filter machine through the filter cloth and along the grooves and the pore channel under pressure, so that the sludge is dehydrated.

The following is a control logic description of one embodiment of the wastewater treatment system:

1. collecting tank

Raw water automatically flows into a wastewater collecting barrel in a collecting tank, a submersible sewage pump 2 and a liquid level floating ball 2 are arranged in the wastewater collecting barrel, the submersible sewage pump is controlled by the liquid level floating ball, when the liquid level reaches a set high value, the liquid level floating ball can give a signal to the submersible sewage pump, and the submersible sewage pump can be automatically started to pump sewage into a pH regulating tank; when the liquid level is lower than a set low value, the liquid level floating ball can give a signal to the submersible sewage pump, and the submersible sewage pump can automatically stop.

pH regulating tank

The pH regulating tank is internally provided with 1 pH online instrument, 2 dosing pumps are respectively an alkaline dosing pump and an acidic dosing pump, the pH online instrument is interlocked with the dosing pumps, when the pH value of raw water is lower than a set low value, the pH online instrument gives a signal to the alkaline dosing pumps, the alkaline dosing pumps are automatically started, when the pH value of raw water is higher than the set low value, the pH online instrument gives a signal to the alkaline dosing pumps, and the alkaline dosing pumps are automatically stopped; when the pH value of raw water is higher than a set low value, the pH online instrument gives a signal to the acid dosing pump, the acid dosing pump is automatically started, and when the pH value is lower than the set low value, the pH online instrument gives a signal to the acid dosing pump, and the acid dosing pump is automatically stopped; the effluent of the pH adjusting tank automatically flows into a buffer tank, and the effluent of the buffer tank automatically flows into a hydrolysis acidification tank.

3. Hydrolytic acidification tank

The hydrolysis acidification tank is internally provided with 1 electromagnetic valve, and the time interval between starting and stopping can be set by controlling the timing module, so that the water discharged from the hydrolysis acidification tank automatically flows into the aerobic tank.

4. Biochemical pool

The biochemical tank is an aerobic biochemical tank, 2 aeration fans are arranged in the biochemical tank, the starting and stopping interval time can be set through the control of a timing module, and the effluent of the biochemical tank automatically flows into the MBR filter.

MBR filter tank

The MBR filter is internally provided with 1 filter floating ball, 2 self-priming pumps, 3 electromagnetic valves, 1 electric contact negative pressure meter and 1 sludge circulating pump, when the liquid level of the MBR filter reaches a set high value, the liquid level floating ball simultaneously gives 1 signal to the self-priming pumps and the electromagnetic valves, the electromagnetic valves are firstly started, and the self-priming pumps are automatically started after 2S delay to pump sewage into the disinfection tank; when the liquid level is lower than a set low value, the liquid level floating ball can simultaneously give a signal to the self-priming pump and the electromagnetic valve, the self-priming pump stops running firstly, and the electromagnetic valve is closed after 2S delay;

the electromagnetic valve is opened and closed at fixed time according to actual demands, and the interval time can be set according to the actual demands; the electric contact negative pressure meter is a film protection device, when the pressure value is higher than the set value, a signal is simultaneously given to the self-priming pump and the electromagnetic valve, the self-priming pump stops running firstly, the electromagnetic valve is closed after 2S delay, and the negative pressure index can be adjusted according to actual requirements.

The sludge circulating pump is controlled by the timing module, and the starting and stopping interval time can be set.

6. Sterilizing pool

The sterilizing pond is internally provided with 1 dosing pump which is linked with the fan and synchronously started and stopped.

7. Sludge pool

The sludge pool is matched with 1 sludge pump, the manual starting is carried out, 1 sludge floating ball is arranged, 1 filtrate pump is arranged, and the sludge floating ball is interlocked with the filtrate pump.

The submersible sewage pump, the liquid level floating ball, the pH online instrument, the dosing pump, the electromagnetic valve, the timing module, the aeration fan, the MBR filter, the filter floating ball, the self-priming pump, the electric contact negative pressure meter, the sludge circulating pump, the sludge floating ball and the filtrate pump are all well known to those skilled in the art, and are not described in detail herein.

In summary, this wastewater treatment system, through will be discharged sewage automatically flow into the collecting vat, sewage in the collecting vat gets into in the pH equalizing basin, effluent automatically flow and get into buffer tank and hydrolysis acidification tank in proper order after the pH value of sewage is adjusted to neutrality, effluent automatically flow and get into the biochemical pond after the hydrolysis acidification tank reaction is finished, effluent automatically flow and get into the MBR filtering pond after the biochemical pond reaction is finished, liquid separation mechanism carries out the separation to the sewage after the MBR filtering pond is handled, sewage flows into the disinfection pond, sewage is through disinfecting after the automatically flowing into the nano-tube and is discharged, this wastewater treatment system carries out targeted treatment to the solid and the liquid in the waste water, promote the treatment effect to waste water, and be convenient for carry out cyclic utilization to the mud in the waste water, and then reduce treatment cost;

according to the wastewater treatment system, the sewage is treated by using automatic control equipment such as the filter floating ball, the self-priming pump and the electromagnetic valve, so that the treatment efficiency of the sewage is improved;

according to the wastewater treatment system, the sludge after the MBR filter tank in the system discharges sewage is dehydrated and compressed through the plate-and-frame filter press, so that the sludge is convenient to transfer and use, and the treatment cost is further reduced.

The above-described embodiments are only for illustrating the technical spirit and features of the present utility model, and it is intended to enable those skilled in the art to understand the content of the present utility model and to implement it accordingly, and the scope of the present utility model as defined by the present embodiments should not be limited only by the present embodiments, i.e. equivalent changes or modifications made in accordance with the spirit of the present utility model will still fall within the scope of the present utility model.

Claims

1. A wastewater treatment system, comprising:

2. A wastewater treatment system according to claim 1 and wherein said liquid separation mechanism comprises:

the self-priming pump is positioned in the MBR filter;

3. A wastewater treatment system according to claim 2 and wherein said liquid separation mechanism further comprises:

4. A wastewater treatment system according to claim 2 and wherein said liquid separation mechanism further comprises:

5. The wastewater treatment system of claim 1, wherein a sludge circulation pump is disposed in the MBR filter, and a timing module is disposed on the sludge circulation pump.

6. The wastewater treatment system of claim 1, wherein a disinfection dosing pump and a disinfection fan are disposed within the disinfection tank, the disinfection dosing pump and the disinfection fan being interlocked.

7. The wastewater treatment system of claim 1, wherein an aeration fan is disposed in the biochemical tank, and a timing module is disposed in the aeration fan.

8. The wastewater treatment system of claim 1, wherein the pH adjusting tank is provided with a pH online meter, an alkaline dosing pump and an acidic dosing pump, and the pH online meter is respectively in control connection with the alkaline dosing pump and the acidic dosing pump.

9. The wastewater treatment system of claim 1, wherein a liquid level float is arranged in the wastewater collection barrel, the wastewater collection barrel and the pH adjusting tank are connected through a submersible sewage pump, and the liquid level float is in control connection with the submersible sewage pump.

10. A wastewater treatment system according to claim 1 and also comprising: the sludge tank is connected with the MBR filter, a filtrate pump and a sludge floating ball are arranged in the sludge tank, and the filtrate pump is interlocked with the sludge floating ball;