CN115092981A - Continuous vaporous high-temperature sterilization biological wastewater inactivation treatment device and method - Google Patents

Abstract

The invention provides a continuous vaporific high-temperature sterilized biological wastewater inactivation treatment device and a method thereof, wherein the treatment device comprises a raw water tank, an atomizer, a steam heater and a temporary storage tank, a preheater is communicated between the raw water tank and the atomizer, the preheater is also communicated with the steam heater, a sleeve heater is arranged between the steam heater and the preheater, and the treatment method comprises the following steps: step S1: injecting live toxic wastewater into a raw water tank; step S2: the live toxicity waste water enters an atomizer for atomization: step S3: the atomized live toxic wastewater enters a steam heat exchanger for heat exchange; step S4: recovering the heat of the inactivated wastewater; step S5: the deactivation waste water gets into and keeps in the jar and discharge after the cooling of keeping in, through pre-heater and double-pipe heat exchanger, can carry out further recycle to the heat of deactivation waste water, reduces the waste of heat when handling the inactivation of live poison waste water.

Description

Continuous vaporous high-temperature sterilization biological wastewater inactivation treatment device and method

Technical Field

The invention relates to the technical field of wastewater purification and the like, in particular to a continuous vaporous high-temperature sterilization biological wastewater inactivation treatment device and a method thereof.

Background

When the biological wastewater is purified, the commonly used biological inactivation modes mainly comprise batch inactivation and continuous inactivation, the batch inactivation is to put the biological wastewater into a container, after the biological wastewater is injected into the container and is heated and insulated for a certain time by the container, harmful bacteria in the biological wastewater can be eliminated at high temperature, and the container needs to be repeatedly heated in the process, so that the heat waste is caused. And the continuous inactivation means that the original biological wastewater is continuously added into a continuously heated container, and the biological wastewater is subjected to heat preservation and inactivation through the time difference between the inflow and the outflow of the biological wastewater.

As disclosed in patent publication nos.: CN113880341A discloses an intelligent continuous inactivation treatment system for biological wastewater and a method for using the same, which comprises that an atomization-steam sterilization zone is arranged in a high sterilization tower, an atomization nozzle sprays biological wastewater and high temperature steam in the atomization-sterilization zone, and the biological wastewater and the high temperature steam are primarily inactivated in the atomization-sterilization zone. In practical application, because the high-temperature steam and the biological wastewater are sprayed out after being atomized, the high-temperature wastewater needs to be specially condensed, and heat waste is caused when the biological wastewater is inactivated.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: after the biological wastewater is inactivated, heat in the biological wastewater is condensed and wasted.

The technical scheme adopted by the invention for solving the technical problems is as follows: a continuous fog-shaped high-temperature sterilization biological wastewater inactivation treatment device comprises a raw water tank, an atomizer communicated to the raw water tank, a steam heater communicated to the atomizer and a temporary storage tank mounted on the steam heater, wherein a preheater is communicated between the raw water tank and the atomizer and is also communicated to the steam heater, a sleeve heater is arranged between the steam heater and the preheater and is communicated to the raw water tank.

Furthermore, an exhaust gas filter is installed on the double-pipe heat exchanger, and the inactivated bacteria-carrying breathing exhaust gas in the double-pipe heat exchanger is emptied after being filtered by the exhaust gas filter.

Further, the preheating tank with the intercommunication has venturi between the jar of keeping in, the waste water pump is installed in the exit of jar of keeping in, waste water pump exhaust part deactivation waste water process venturi flows back to in the jar of keeping in.

Furthermore, the discharge pipe of the wastewater pump is also communicated to the raw water tank, and the inactivation wastewater in the temporary storage tank is discharged to the raw water tank in a backflow manner when the inactivation standard is not reached.

Further, install the thermometer of keeping in and the level gauge of keeping in on the jar of keeping in, the thermometer of keeping in is right the deactivation waste water in the jar of keeping in carries out temperature monitoring, the level gauge of keeping in is right the deactivation waste water in the jar of keeping in carries out the stock control.

Further, a heat exchange thermometer is installed on the steam heater, and the heat exchange thermometer detects the temperature of the inactivated wastewater discharged by the steam heater.

Further, install the atomizing level gauge on the atomizer, the atomizing level gauge is right the liquid level of live poison waste water in the atomizer monitors.

Furthermore, a raw water pump is installed between the raw water tank and the preheater, a raw water pressure sensor is communicated between the raw water pump and the preheater, and the raw water pressure sensor controls the output power of the raw water pump.

Further, install raw water thermometer and raw water level gauge on the former water pitcher, raw water thermometer is right the live poisonous waste water in the former water pitcher monitors, raw water level gauge is right the stock of live poisonous waste water in the former water pitcher monitors.

Further, a biological wastewater inactivation treatment method is based on any one of the biological wastewater inactivation treatment devices, and comprises the following steps:

step S1: injecting live toxic wastewater into a raw water tank;

step S2: the live toxicity waste water enters an atomizer for atomization:

step S3: the atomized live toxic wastewater enters a steam heat exchanger for heat exchange;

step S4: recovering the heat of the inactivated wastewater; the method comprises the following steps that inactivated wastewater is discharged from a steam heat exchanger and then enters a double-pipe heat exchanger, bacteria-carrying respiratory waste gas in a raw water tank is injected into the double-pipe heat exchanger, the inactivated wastewater carries out inactivation and disinfection on harmful bacteria in the bacteria-carrying respiratory waste gas, the inactivated wastewater enters a preheater from the double-pipe heat exchanger, in the preheater, the inactivated wastewater and live-toxin wastewater in the raw water tank carry out heat exchange, and the live-toxin wastewater is preliminarily preheated;

step S5: and the inactivated wastewater enters a temporary storage tank for temporary storage and cooling and then is discharged.

The invention has the advantages that the preheater is arranged between the atomizer and the raw water tank, the inactivated wastewater from the steam heater in the preheater exchanges heat with the live-toxicity wastewater in the raw water tank, the heat of the inactivated wastewater is transferred to the live-toxicity wastewater, and the heat of the inactivated wastewater is recycled to the live-toxicity wastewater, so that the live-toxicity wastewater can reach a specified temperature before atomization, partial heat recovery of the inactivated wastewater is realized, meanwhile, the bacteria-carrying respiratory waste gas in the raw water tank and the inactivated wastewater in the steam heater simultaneously enter the sleeve heater for heat exchange, and microorganisms such as germs in the bacteria-carrying respiratory waste gas are inactivated at a high temperature to form harmless gas and then discharged, i.e. the heat in the inactivated wastewater is reused, and the waste of heat is reduced.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view showing the construction of a biological wastewater inactivation treatment apparatus according to the present invention;

FIG. 2 is a flow chart of the biological wastewater inactivation treatment method of the present invention;

in the figure: the biological wastewater inactivation treatment device comprises a biological wastewater inactivation treatment device 100, a raw water tank 10, a preheater 20, an atomizer 30, a steam heater 40, a double-pipe heat exchanger 50, a temporary storage tank 60, a raw water thermometer 110, a raw water level meter 120, a raw water pump 210, a ball valve 220, a filter 230, a raw water pressure sensor 240, an atomization level meter 330, a preheating thermometer 310, a preheating pressure gauge 320, an atomization pneumatic switch valve 340, a heat exchange thermometer 410, an emptying pipe 510, a waste gas filter 520, a Venturi tube 250, a discharge barometer 260, a temporary storage thermometer 610, a temporary storage level meter 620, a wastewater pump 630 and a control valve 640.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention and are not to be construed as limiting the present invention. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.

As shown in fig. 1, the present invention provides a continuous mist-like biological wastewater inactivation treatment device 100 with high temperature sterilization, comprising a raw water tank 10, a preheater 20, an atomizer 30, a steam heater 40, a double-pipe heat exchanger 50 and a temporary storage tank 60.

The raw water thermometer 110 and the raw water level gauge 120 are installed on the raw water tank 10, the raw water tank 10 is used for containing live toxic wastewater, the raw water thermometer 110 on the raw water tank 10 is used for measuring the temperature of the live toxic wastewater, the raw water level gauge 120 on the raw water tank 10 is used for measuring the liquid level of the live toxic wastewater in the raw water tank 10, and the live toxic wastewater in the raw water tank 10 can be detected through the raw water thermometer 110 and the raw water level gauge 120, so that the live toxic wastewater state in the raw water tank 10 can be determined.

The preheater 20 is communicated with the raw water tank 10, the raw water pump 210 is communicated between the preheater 20 and the raw water tank 10, the ball valve 220 and the filter 230 are further arranged between the raw water pump 210 and the raw water tank 10, and the raw water pressure sensor 240 is arranged between the raw water pump 210 and the preheater 20. After ball valve 220 is opened, the back is inhaled to the live poisonous waste water in former water tank 10 to the pre-heater 20 to accessible raw water pump 210, live poisonous waste water filters through filter 230 before getting into raw water pump 210, avoid the large granule in the live poisonous waste water to cause the destruction to raw water pump 210, can monitor raw water pump 210's output pressure through raw water pressure sensor 240, control raw water pump 210's output velocity of flow, make the inflow speed of live poisonous waste water in pre-heater 20 obtain control, and then avoid the too fast flow of live poisonous waste water to cause the inactivation time to shorten, but live poisonous waste water primary heating in pre-heater 20.

The atomizer 30 is communicated with the preheater 20, the atomizer 30 is provided with an atomization liquid level meter 330, a preheating temperature meter 310, a preheating pressure meter 320 and an atomization pneumatic switch valve 340 are arranged between the atomizer 30 and the preheater 20, the preheated live toxic wastewater in the preheater 20 can flow into the atomizer 30, the preheating thermometer 310 and the preheating pressure gauge 320 monitor the live toxic wastewater flowing out of the preheater 20, ensure that the live toxic wastewater entering the atomizer 30 can reach the specified standard, when the level of the live toxic wastewater can enter the atomizer 30, the atomizing pneumatic switch valve 340 is opened, so that the live toxin wastewater can enter the atomizer 30, the atomizer 30 can atomize the live toxin wastewater, the active toxic wastewater output by the atomizer 30 can be in an atomized state, and the atomization liquid level meter 330 monitors the liquid level of the active toxic wastewater in the atomizer 30, so that the content of the active toxic wastewater in the atomizer 30 can be controlled.

The steam heater 40 communicates to the atomizer 30, and the atomizer 30 discharges the live toxin waste water into the steam heater 40 after atomizing, injects high temperature steam into the steam heater 40 simultaneously, and high temperature steam mixes with the atomized live toxin waste water in the steam heater 40, and the atomized live toxin waste water can inactivate the virus and bacteria in the live toxin waste water at high temperature after a certain period of heat preservation. The steam heater 40 is fixedly provided with a heat exchange thermometer 410, and the heat exchange thermometer 410 detects the temperature of the inactivation wastewater discharged from the steam heater 40, so that the inactivation temperature of the inactivation wastewater in the steam heater 40 is always kept when the inactivation wastewater is discharged.

There are two heat transfer cavitys in the double pipe heat exchanger 50, one of them heat transfer cavity intercommunication steam heater 40, pre-heater 20 and former water pitcher 10, after the inactivation of live poison waste water from steam heater 40 diffusion to double pipe heat exchanger 50, inject the high temperature medium into another heat transfer cavity, inactivation waste water and high temperature medium carry out the heat transfer in double pipe heat exchanger 50, further improve the heating inactivation effect of live poison waste water, live poison waste water discharges in pre-heater 20 after the completion of heating in double pipe heat exchanger 50, the heat transfer is carried out to the live poison waste water in inactivation waste water and the former water pitcher 10 in pre-heater 20, improve the temperature that comes from the live poison waste water of former water pitcher 10 in the pre-heater 20, thereby retrieve the heat of inactivation waste water, reduce the energy waste to the live poison waste water treatment in-process. The bacteria-carrying respiratory waste gas generated when the raw water tank 10 is filled with the live-poison waste water is filled into the double-pipe heat exchanger 50, and the temperature of the bacteria-carrying respiratory waste gas in the double-pipe heat exchanger 50 can be heated to more than 150 ℃ due to the high-temperature inactivated waste water in the double-pipe heat exchanger 50, namely, the high-temperature sterilization is carried out on the bacteria-carrying respiratory waste gas. The casing heat exchanger 50 is provided with an emptying pipe 510, the emptying pipe 510 is provided with an exhaust gas filter 520, the filtering precision of the exhaust gas filter 520 is preferably more than 0.2 μm, the exhaust gas in the casing heat exchanger 50 is inactivated at high temperature and then is emptied by the emptying pipe 510, and the exhaust gas is filtered by the exhaust gas filter 520 before being emptied, so that the discharged exhaust gas can be ensured to meet the emission standard. After the atomized live-poison wastewater in the preheater 20 exchanges heat with the live-poison wastewater in the raw water tank 10, the atomized live-poison wastewater can be condensed into liquid water.

Still communicate between preheater 20 and the jar 60 of keeping in has venturi 250, the live poison waste water who condenses into liquid water discharges to venturi 250 in, still install discharge barometer 260 between venturi 250 and the preheater 20, can carry out water pressure detection to discharged waste water through discharge barometer 260, thereby it is reasonable to guarantee to get into the waste water velocity of flow in venturi 250, suction effect through venturi 250, can make preheater 20, double-pipe heat exchanger 50, the closed system that steam heater 40 and atomizer 30 found is the little negative pressure state, atomizing live poison waste water can flow under the suction effect of little negative pressure.

The temporary storage tank 60 communicates to venturi 250, waste water after the deactivation can be discharged to temporary storage tank 60 in venturi 250, install temporary storage thermometer 610 and temporary storage level gauge 620 on the temporary storage tank 60, can detect the waste water of keeping in temporary storage tank 60 through temporary storage thermometer 610 and temporary storage level gauge 620, still install waste water pump 630 on the temporary storage tank 60, still install control valve 640 before waste water pump 630 and temporary storage tank 60, the opening closure of pipeline between the steerable waste water pump 630 of control valve 640 and the temporary storage tank 60, can discharge the waste water after the deactivation from temporary storage tank 60 through waste water pump 630. The waste water pump 630 discharges inactivated waste water, and provides flow thrust for the venturi tube 250 when discharging inactivated waste water, so as to ensure the suction effect of the venturi tube 250 on the inactivated waste water in the preheater 20, and when the temperature of the steam heater 40 and the casing heat exchanger 50 does not reach the inactivation temperature, the waste water needing to be inactivated can pass through the return pipe to the raw water tank 10, and when the temperature of the steam heater 40 and the casing heat exchanger 50 reaches the inactivation temperature, the pipeline returning to the raw water tank 10 is closed.

As shown in fig. 2, a method of the biological wastewater inactivation treatment apparatus 100 based on the continuous mist-like high-temperature sterilization includes the following steps:

step S1: the raw water tank 10 is filled with live toxic wastewater. The ball valve 220 on the raw water tank 10 is closed, clean water, detergent and disinfectant are mixed into the live poisonous wastewater, and the temperature and the liquid level of the mixed solution of the live poisonous wastewater in the raw water tank 10 are detected by the raw water thermometer 110 and the raw water level gauge 120.

Step S2: the live toxin wastewater enters the atomizer 30 for atomization. The ball valve 220 is opened, the raw water pump 210 is opened at the same time, the raw water pump 210 pumps the live toxic wastewater in the raw water tank 10 into the atomizer 30, the live toxic wastewater is filtered by the filter 230, it can be ensured that the diameter of the particles of the live toxic wastewater entering the atomizer 30 reaches a standard level, the raw water pressure sensor 240 monitors the output pressure of the raw water pump 210, it is ensured that the pumping speed of the raw water pump 210 is the same as the injection speed of the live toxic wastewater in the raw water tank 10, and the situation that the live toxic wastewater in the raw water tank 10 is excessively pumped to a dry state is avoided. The live toxic wastewater is pumped by the raw water pump 210 and transported to the atomizer 30, and through the atomization effect of the atomizer 30, the live toxic wastewater can be processed to a floating state.

Step S3: the atomized live toxic wastewater enters a steam heat exchanger 40 for inactivation and heating. The atomized live toxin wastewater enters the steam heat exchanger 40 by being pushed by the raw water pump 210, high-temperature steam is injected into the steam heat exchanger 40 at the same time, the temperature of the high-temperature steam is above 150 ℃, the temperature of the live toxin wastewater in the steam heat exchanger 40 is kept above 150 ℃ under the heating of the high-temperature steam, and harmful bacteria in the live toxin wastewater are damaged at high temperature in a high-temperature environment to form inactivated wastewater. When the temperature of the discharged inactivated wastewater reaches 150 ℃ as detected by the heat exchange thermometer 410, the harmful germs in the marked live-poison wastewater are completely heated and killed.

Step S4: and recovering the heat of the inactivated wastewater. The inactivated wastewater exchanges heat with the bacteria-containing breathing waste gas in the raw water tank 10 in the double-pipe heat exchanger 50, and the inactivated wastewater exchanges heat with the live-poison wastewater in the raw water tank 10 in the preheater 20. Inactivation waste water gets into in the preheater 20 before at first get into the sleeve pipe heater 50, take the fungus to breathe waste gas and get into to the sleeve pipe heater 50 among raw water tank 10 and the steam heater 40, under the high-temperature heating of inactivation waste water, take the fungus to breathe waste gas and be heated the disinfection, take the poisonous germ in the fungus to breathe waste gas and carry out high-temperature sterilization, take the fungus after high-temperature sterilization to breathe waste gas through exhaust gas filter 520's filtration back, discharge by evacuation pipe 510, thereby can avoid taking the fungus to breathe waste gas and cause the influence to the production environment. Before the live-poison wastewater in the raw water tank 10 is conveyed to the atomizer 30, firstly, the live-poison wastewater exchanges heat with the inactivated wastewater in the preheater 20, the live-poison wastewater reaches the atomization standard after being heated, the heat of the inactivated wastewater is recovered, and meanwhile, the inactivated wastewater is cooled, so that the inactivated wastewater is convenient to store.

Step S5: the inactivation wastewater after heat recovery in the preheater 20 enters the temporary storage tank 60 for temporary storage and cooling, and then is discharged. The cooling back of deactivation waste water flows and save to the jar 60 of keeping in the pre-heater 20, the thermometer 610 of keeping in carries out the temperature detection to the deactivation waste water in the jar 60 of keeping in, the deactivation waste water of guaranteeing to keep in the jar 60 reaches discharge temperature, the level gauge 620 of keeping in simultaneously makes statistics of the volume of keeping in of the deactivation waste water in the jar 60 of keeping in, the power of avoiding waste water pump 630 is greater than the power of former water pump 210, cause the solution of deactivation waste water in the jar 60 of keeping in dry. Part of the output solution of the wastewater pump 630 flows back to the temporary storage tank 60 through the venturi tube 250, and due to the siphoning effect of the venturi tube 250, the sealing systems among the preheater 20, the double-pipe heat exchanger 50, the steam heater 40 and the atomizer 30 are in a micro-negative pressure state, so that the atomized live-poison wastewater flows among the sealing systems.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (10)

1. The utility model provides a biological wastewater inactivation processing apparatus of vaporific high temperature sterilization of continuous type which characterized in that: including former water pitcher, communicate to atomizer on the former water pitcher, communicate to steam heater on the atomizer and install the jar of keeping in on the steam heater, former water pitcher with the intercommunication has the pre-heater between the atomizer, the pre-heater still communicate to on the steam heater, the steam heater with be provided with the sleeve pipe heater between the pre-heater, the sleeve pipe heater communicate to in the former water pitcher.

2. The apparatus for inactivating and treating biological wastewater by continuous mist high-temperature sterilization according to claim 1, wherein: and a waste gas filter is arranged on the double-pipe heat exchanger, and the inactivated bacteria-carrying breathing waste gas in the double-pipe heat exchanger is filtered by the waste gas filter and then is evacuated.

3. The apparatus for inactivating and treating biological wastewater by continuous mist high-temperature sterilization according to claim 1, wherein: the preheating tank with the intercommunication has venturi between the jar of keeping in, the waste water pump is installed in the exit of jar of keeping in, waste water pump exhaust part deactivation waste water process venturi flows back extremely in the jar of keeping in.

4. The apparatus according to claim 3, wherein the apparatus comprises: the discharge pipe of the waste water pump is also communicated to the raw water tank, and the inactivation waste water in the temporary storage tank is discharged to the raw water tank in a backflow manner when the inactivation standard is not reached.

5. The apparatus according to claim 3, wherein the apparatus comprises: install the thermometer of keeping in on the jar of keeping in and keep in the level gauge, it is right to keep in the thermometer the deactivation waste water in the jar carries out temperature monitoring, it is right to keep in the level gauge the deactivation waste water in the jar of keeping in carries out the stock control.

6. The apparatus for inactivating and treating biological wastewater by continuous mist high-temperature sterilization according to claim 1, wherein: and the steam heater is provided with a heat exchange thermometer, and the heat exchange thermometer is used for detecting the temperature of the inactivated wastewater discharged by the steam heater.

7. The apparatus for inactivating and treating biological wastewater by continuous mist high-temperature sterilization according to claim 1, wherein: install the atomizing level gauge on the atomizer, the atomizing level gauge is right the liquid level of live poison waste water in the atomizer monitors.

8. The apparatus for inactivating and treating biological wastewater by continuous mist high-temperature sterilization according to claim 1, wherein: the raw water pump is installed between the raw water tank and the preheater, a raw water pressure sensor is communicated between the raw water pump and the preheater, and the raw water pressure sensor controls the output power of the raw water pump.

9. The apparatus for inactivating and treating biological wastewater by continuous mist high-temperature sterilization according to claim 1, wherein: the raw water tank is provided with a raw water thermometer and a raw water level meter, the raw water thermometer monitors the live toxic wastewater in the raw water tank, and the raw water level meter monitors the stock of the live toxic wastewater in the raw water tank.

10. A biological wastewater inactivation treatment method based on the biological wastewater inactivation treatment apparatus according to any one of claims 1 to 9, characterized by comprising the steps of:

step S1: injecting live toxic wastewater into a raw water tank;

step S2: the live toxicity wastewater enters an atomizer for atomization:

step S3: the atomized live toxic wastewater enters a steam heat exchanger for heat exchange;

step S4: recovering the heat of the inactivated wastewater; the method comprises the following steps that inactivated wastewater is discharged from a steam heat exchanger and then enters a double-pipe heat exchanger, bacteria-carrying respiratory waste gas in a raw water tank is injected into the double-pipe heat exchanger, the inactivated wastewater carries out inactivation and disinfection on harmful bacteria in the bacteria-carrying respiratory waste gas, the inactivated wastewater enters a preheater from the double-pipe heat exchanger, in the preheater, the inactivated wastewater and live-toxin wastewater in the raw water tank carry out heat exchange, and the live-toxin wastewater is preliminarily preheated;

step S5: and the inactivated wastewater enters a temporary storage tank for temporary storage and cooling and then is discharged.

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