CN216764583U - Domestic sewage utilization rapid treatment device - Google Patents

Abstract

The utility model discloses a rapid treatment device for recycling domestic sewage, which comprises an ozone gas disinfection mechanism and a reaction bin, wherein the ozone gas disinfection mechanism is used for charging ozone gas into the domestic sewage to generate sewage after primary treatment; the strong oxidation layer comprises an ozone water inlet pipe and an ultraviolet lamp, the ozone water inlet pipe is used for being connected with an ozone water solution and sprayed into the reaction bin, the ultraviolet lamp emits ultraviolet rays to irradiate the ozone water solution to generate hydroxyl radicals, the primary treated sewage is subjected to secondary killing, and then the primary treated sewage is subjected to tertiary killing through the catalyst layer to form tail water and is discharged out of the reaction bin. The domestic sewage treatment device is designed based on the hydroxyl radical catalytic oxidation reaction digestion technology, so that harmful substances in the domestic sewage can be fully killed, original beneficial substances in the domestic sewage can be reserved, the treated tail water is more suitable for farmland irrigation, and resource utilization is realized.

Description

Domestic sewage utilization rapid treatment device

Technical Field

The utility model belongs to the technical field of water treatment equipment, and particularly relates to a water treatment device for digesting domestic sewage by utilizing a hydroxyl radical catalytic oxidation reaction.

Background

Domestic sewage is mainly from drainage generated by washing, bathing, kitchens, toilet flushing and the like. At present, the sewage is randomly discharged in many countries, and pollutes the environment. Only a few villages adopt advanced biological processes such as anaerobic treatment, aerobic treatment and constructed wetland (or disinfection) to realize harmless treatment on domestic sewage, but the treated tail water is finally discharged into a nearby ditch without realizing the reutilization of water resources, such as irrigating farmlands, culturing fish, watering fruits and vegetables and the like by using the treated tail water, thereby causing a great deal of waste of the water resources.

Although some places adopt measures of tail water recycling for treating rural domestic sewage, when the domestic sewage is treated by a biological method, a large amount of substances (such as beneficial substances such as nitrogen, phosphorus and the like) which are beneficial to farmland irrigation in the sewage are removed, the improvement of farmland soil is not facilitated, and a large amount of medicaments and strains are required to be added into the domestic sewage, so that the cost is high, and secondary pollution is easily caused along with sludge generation.

Disclosure of Invention

The domestic sewage treatment device is designed based on the hydroxyl radical catalytic oxidation reaction digestion technology, so that harmful substances in the domestic sewage can be fully killed, the original beneficial substances in the domestic sewage can be reserved, the treated tail water is more suitable for farmland irrigation, and the resource utilization is realized.

In order to solve the technical problems, the utility model adopts the following technical scheme to realize:

a quick treatment device for recycling domestic sewage comprises an ozone gas disinfection mechanism and a reaction bin; the ozone gas killing mechanism is used for charging ozone gas into the domestic sewage, and performing primary killing on the domestic sewage by using the ozone gas to generate primary treated sewage; the reaction bin is provided with an inner cavity for receiving the sewage after the primary treatment, and a strong oxidation layer and a catalyst layer are arranged in the inner cavity, wherein the strong oxidation layer comprises an ozone water inlet pipe and an ultraviolet lamp, the ozone water inlet pipe is used for being connected with an ozone water solution and sprayed into the reaction bin, the ultraviolet lamp emits ultraviolet rays to irradiate the ozone water solution to generate hydroxyl radicals, and the sewage after the primary treatment is subjected to secondary disinfection and killing to generate sewage after the secondary treatment; and the catalyst layer utilizes a catalyst to carry out three-stage disinfection on the sewage subjected to the secondary treatment so as to form tail water, and the tail water is discharged out of the reaction bin.

In some embodiments of the present application, in order to enable the sewage entering the reaction bin to automatically pass through the strong oxidation layer and the catalyst layer for the second-level and third-level disinfection treatment, it is preferable to design an inner cavity of the reaction bin to sequentially form a water collecting layer, the catalyst layer and the strong oxidation layer from top to bottom; a water inlet pipe is arranged in the reaction bin and positioned below the strong oxidation layer, and the water inlet pipe is connected with the ozone gas sterilizing mechanism and is used for connecting the sewage after the primary treatment into the reaction bin; a tail water discharge port is arranged at the upper part of the reaction bin and communicated with the water collecting layer; like this, sewage can pass through in proper order along with the gradual rise of liquid level after the primary treatment strong oxidation layer and catalyst layer carry out second grade and tertiary disinfection and kill and handle, then assemble the water collecting layer to when the liquid level reachs the position of tail water discharge port, through tail water discharge port overflow is discharged the reaction bin.

In some embodiments of the present application, it is preferable that the water inlet pipe is transversely arranged in an inner cavity of the reaction chamber, a plurality of nozzles are arranged on the water inlet pipe, and ozone gas which is not consumed in the primary treated sewage and the sewage is sprayed into the reaction chamber through the nozzles, so that the sewage and the strong oxidation layer can be fully and uniformly contacted, and the killing effect is improved.

In some embodiments of the present application, in the strong oxidation layer, it is preferable that the ozone water inlet pipe and the ultraviolet lamp are both arranged in the inner cavity of the reaction chamber in a transverse direction, the ozone water inlet pipe is located above the ultraviolet lamp, and a plurality of nozzles are disposed on the ozone water inlet pipe for spraying the ozone water solution to the direction of the ultraviolet lamp. By adopting the structural design, the ozone water solution can be fully irradiated by ultraviolet rays, so that a large amount of hydroxyl free radicals can be quickly generated, and the secondary sewage sterilizing capability is improved.

In some embodiments of the present application, the catalyst layer preferably comprises a lower support plate, an upper press plate, and a catalyst; the lower supporting plate is preferably transversely arranged in an inner cavity of the reaction bin to lift the catalyst, and a plurality of liquid filtering holes are formed in the lower supporting plate; the upper pressure plate is also preferably transversely arranged in the inner cavity of the reaction bin and positioned above the lower supporting plate to press the catalyst; the upper pressing plate is provided with a plurality of liquid filtering holes, so that sewage subjected to secondary treatment of the strong oxidation layer can enter the catalyst layer through the liquid filtering holes of the lower supporting plate, can be subjected to full catalytic reaction with the catalyst, and then enters the water collecting layer of the reaction bin through the liquid filtering holes of the upper pressing plate, and the three-stage disinfection treatment of the sewage is completed.

In some embodiments of the present application, a breathing hole may be disposed on the top surface of the reaction chamber, and the breathing hole is communicated with the water collecting layer to maintain the air pressure balance in the reaction chamber; the bottom of the reaction bin can be provided with a slag outlet and a slag outlet valve so as to discharge slag liquid accumulated at the bottom of the reaction bin, and the cleaning work of the reaction bin is simplified.

In some embodiments of the present application, the ozone gas disinfecting and killing mechanism preferably comprises a sewer pipe, a filter, a sewage pump, a first oxygen generator, a first ozone generator, and an air pressure control mixer; the sewage pipe is connected with the reaction bin and is used for accessing domestic sewage; the filter is connected to the sewage pipe and is used for filtering suspended matters in sewage; the first oxygen generator is used for accessing air, discharging nitrogen after nitrogen-oxygen gas separation is carried out on the air, and conveying oxygen to the first ozone generator to generate ozone gas; the gas-water pressure control mixer is connected to the sewage pipe, receives the ozone gas transmitted by the first ozone generator, is used for controlling the concentration of the ozone gas dissolved in the sewage to generate the sewage after primary treatment, and is pumped to the reaction bin by the sewage pump; the sewage pump is connected to the sewage pipe and is used for pumping sewage to the air-water pressure control mixer.

In some embodiments of the present application, an aqueous ozone solution preparation mechanism may be specially provided in a domestic sewage treatment apparatus for preparing the aqueous ozone solution. Preferably, the ozone water solution preparation mechanism can comprise a clean water pipe, a clean water pump, a second oxygen generator, a second ozone generator, a gas-water mixer, a vacuum pump and a water outlet pump; the clean water pipe can be connected with the ozone water inlet pipe and is used for accessing clean water; the clean water pump is connected to the clean water pipe, positioned in front of the gas-water mixer and used for pumping clean water into the gas-water mixer; the second oxygen generator is connected with air, and after nitrogen-oxygen gas separation is carried out on the air, nitrogen is discharged, oxygen is conveyed to the second ozone generator to generate ozone gas, the ozone gas is conveyed to the gas-water mixer, the gas-water mixer is connected onto the clear water pipe, the vacuum pump is connected with the gas-water mixer, and the clear water and the ozone gas entering the gas-water mixer are physically mixed under a negative pressure or vacuum state to form a high-concentration ozone water solution, and the ozone water solution is pumped to the ozone water inlet pipe through a water outlet pump connected onto the clear water pipe and positioned behind the gas-water mixer, and then enters the reaction bin.

In some embodiments of the present application, in order to sterilize domestic sewage with too poor water quality for multiple times, so as to ensure that the tail water of the finally flowing domestic sewage treatment device can meet the water quality requirement of farm irrigation, it is preferable to further provide a tail water returning treatment mechanism in the sewage treatment device, which is connected to the reaction bin, and is used for extracting the tail water in the reaction bin and returning the tail water to the reaction bin again, so that the tail water passes through the strong oxidation layer and the catalyst layer again for sterilization treatment, thereby improving the quality of the tail water.

In some embodiments of the present application, the tail water back-bin reprocessing mechanism preferably includes a tail water back-bin pipe, a tail water back-bin valve, and a tail water back-bin pump; the tail water bin returning pipe is communicated with the water accumulation layer of the reaction bin, and the communication position of the tail water bin returning pipe is lower than the tail water discharge port; the tail water returning valve is arranged on the tail water returning pipe and is used for controlling the flow of the returning tail water; the tail water back-storage pump is arranged on the tail water back-storage pipe and used for conveying back-storage tail water to the water inlet pipe of the reaction storage, and then the tail water enters the reaction storage to be subjected to secondary and tertiary disinfection treatment again, so that the purification effect is improved.

Compared with the prior art, the utility model has the advantages and positive effects that:

(1) the utility model designs a water treatment device aiming at domestic sewage, adopts a hydroxyl radical + high-concentration ozone + ultraviolet + catalyst synergistic disinfection technology, adopts a mode of simultaneously using a high-concentration ozone aqueous solution and ozone gas aiming at high-concentration ozone, realizes the advantage complementation, can instantly kill bacteria and viruses in the domestic sewage, degrades and decomposes various harmful organic substances in the sewage, simultaneously has the functions of decoloring, deodorizing and the like on the domestic sewage, and comprehensively improves the disinfection capability on the domestic sewage;

(2) compared with the traditional process for treating domestic sewage by using a biological method, the tail water purified by using the domestic sewage treatment device provided by the utility model has the advantages that the Chemical Oxygen Demand (COD), ammonia nitrogen and escherichia coli are obviously reduced, and beneficial elements such as nitrogen, phosphorus and the like in the original sewage are kept unchanged after treatment, so that the tail water is suitable for being used as farmland liquid fertilizer and used for preparing farmland irrigation water, the water resource is recycled, and the rural environment is improved;

(3) when the domestic sewage treatment device disclosed by the utility model is used for treating domestic sewage, the domestic sewage treatment device has strong sterilization and disinfection capacity, does not need to add medicaments and strains, does not discharge waste gas, does not have sludge after treatment, can avoid secondary pollution, and belongs to an environment-friendly technology.

Other features and advantages of the present invention will become more apparent from the detailed description of the embodiments of the present invention when taken in conjunction with the accompanying drawings.

Drawings

FIG. 1 is a schematic view of the overall structure of an embodiment of a domestic sewage recycling rapid treatment apparatus according to the present invention;

FIG. 2 is a detailed piping diagram of an embodiment of the water treatment device shown in FIG. 1.

Detailed Description

The following detailed description of embodiments of the utility model refers to the accompanying drawings.

It should be noted that in the description of the present invention, the terms "upper", "lower", "inner", "outer", "front", "rear", and the like, which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that in the description of the present invention, the terms "mounted," "connected," and "connected" are to be construed broadly unless otherwise specifically indicated and limited. For example, it may be a fixed connection, a detachable connection or an integral connection; either mechanically or electrically; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1, the fast treatment apparatus for recycling domestic sewage (hereinafter referred to as water treatment apparatus) of the present embodiment is designed according to the type of pollutants contained in domestic sewage, and mainly includes ozone gas sterilizing means 100, ozone aqueous solution preparing means 200, reaction chamber 300, and tail water returning and treating means 400.

The ozone gas sterilizing mechanism 100 is used as a primary sterilizing mechanism of the whole device, and high-concentration ozone gas is used for sterilizing and disinfecting domestic sewage to form primary treated sewage, and the primary treated sewage is injected into the reaction bin 300.

As shown in fig. 2, the ozone gas sterilizing mechanism 100 of the present embodiment is mainly provided with a sewage pipe 101, a sewage valve 102, a filter 103, a sewage pump 104, a first oxygen generator 105, a first ozone generator 106, a gas-water pressure control mixer 107, and the like.

Wherein, the sewage pipe 101 is connected with the water inlet pipe 302 of the reaction bin 300 and is used for introducing the domestic sewage to be treated, and the domestic sewage is sent into the inner cavity of the reaction bin 300 after first-level disinfection treatment.

A sewage valve 102, a filter 103, a sewage pump 104, and an air pressure control mixer 107 are sequentially installed in the sewage pipe 101 from the water inlet toward the reaction chamber 300. The sewage valve 102 is used for controlling whether domestic sewage enters the sewage pipe 101; the filter 103 is used for filtering domestic sewage entering the sewage pipe 101 to remove suspended matters and solid impurities in the sewage, so as to avoid blocking of the pipeline and the sewage pump 140; the sewage pump 104 pumps the filtered domestic sewage to the gas-water pressure control mixer 107 for primary disinfection treatment.

The gas-water pressure control mixer 107 is a gas-water mixer having pressure control, and by controlling the pressure in the mixer, the dissolved concentration of the gas in the liquid is adjusted. The present embodiment performs primary disinfection of the domestic sewage injected into the gas-water pressure control mixer 107 using ozone gas. The ozone gas used may be produced by a first oxygen generator 105 and a first ozone generator 106. Specifically, the air inlet pipe of the first oxygen generator 105 may be connected to the outside atmosphere for extracting the outside air and performing nitrogen-oxygen separation on the air, and the separated nitrogen may be discharged back to the atmosphere; the separated oxygen is delivered to a first ozone generator 106 for producing ozone. The first ozone generator 106 converts the oxygen gas delivered from the first oxygen generator 105 into ozone gas under the excitation of high voltage electric energy, and delivers the ozone gas to the gas-water pressure control mixer 107 to increase the dissolved concentration of the ozone gas in the domestic sewage, and performs primary disinfection treatment on harmful substances in the domestic sewage to form primary treated sewage and discharge the primary treated sewage. The sewage after the primary treatment is pumped to a water inlet pipe 302 by a sewage pump 104 and enters a reaction bin 300 through the water inlet pipe 302 so as to carry out subsequent treatments such as secondary disinfection and sterilization, tertiary disinfection and the like.

A sewage branch pipe 110 may be drawn out of the sewage pipe 101 at the rear of the sewage valve 102, and a sewage sampling valve 108 for sampling domestic sewage introduced into the water treatment apparatus may be installed on the sewage branch pipe 110.

In addition, a sampling branch pipe 111 can be led out from the sewage pipe 101 at the rear of the gas-water pressure control mixer 107, and a sampling valve 109 is installed on the sampling branch pipe 111 for sampling the sewage after the primary treatment and detecting the index of the domestic sewage after the primary treatment by the ozone gas.

In this embodiment, the ozone aqueous solution preparing mechanism 200 is used for preparing a high concentration ozone aqueous solution, which is supplied to the reaction chamber 300, so as to perform a strong oxidation sterilization and disinfection process on the primary treated sewage injected into the reaction chamber 300.

As shown in fig. 2, the ozone-water solution preparing mechanism 200 of the present embodiment is mainly provided with a clean water pipe 201, a clean water valve 202, a filter 203, a clean water pump 204, a second oxygen generator 205, a second ozone generator 206, a gas-water mixer 207, a vacuum pump 208, a water outlet pump 209, a water flow valve 210, and the like.

Wherein, the clean water pipe 201 is connected with the ozone water inlet pipe 303 of the reaction bin 300, and is used for introducing the clean water into the gas-water mixer 207 and sending the prepared high-concentration ozone water solution into the inner cavity of the reaction bin 300.

A clean water valve 202, a filter 203, a clean water pump 204, a gas-water mixer 207, a water outlet pump 209 and a water flow valve 210 are sequentially arranged on the clean water pipe 201 from the water inlet to the reaction bin 300. Wherein, the clean water valve 202 is used for controlling the on and off of the clean water. The clean water can be well water, tap water or water with the same water quality. The filter 203 is used for filtering the clean water entering the clean water pipe 201 to filter out suspended substances in the clean water. The clean water pump 204 pumps the filtered clean water to the gas-water mixer 207 for generating an aqueous ozone solution.

An air inlet pipe of the second oxygen generator 205 is communicated with the outside atmosphere and used for extracting outside air and carrying out nitrogen-oxygen separation on the air, and the separated nitrogen can be discharged back to the atmosphere; the separated oxygen is delivered to a second ozone generator 206 for producing ozone. The second ozone generator 206 converts the oxygen gas delivered from the second oxygen generator 205 into ozone gas under the excitation of high-voltage electric energy, and delivers the ozone gas to the gas-water mixer 207. The gas-water mixer 207 is connected with a vacuum pump 208, and the vacuum pump 208 pumps air in the gas-water mixer 207, so that a vacuum or negative pressure state is formed in the gas-water mixer 207. The clean water and the ozone gas entering the gas-water mixer 207 are physically mixed in a negative pressure or vacuum state to form a high-concentration ozone aqueous solution of more than 20ppm, and the high-concentration ozone aqueous solution is pumped by the water outlet pump 209, and is conveyed to the ozone water inlet pipe 303 through the water flow valve 210, and then enters the reaction bin 300. The flow rate of the high-concentration ozone aqueous solution can be controlled by the water flow valve 210.

In addition, a sampling branch pipe 211 can be led out from the clean water pipe 201 behind the gas-water mixer 207 or the water outlet pump 209, and a sampling valve 212 is installed on the sampling branch pipe 211 for sampling the prepared ozone aqueous solution and detecting the concentration of the ozone aqueous solution.

As a preferred embodiment, the clean water introduced into the clean water pipe 201 can be used as the cooling water for the first ozone generator 106, and the first ozone generator 106 is cooled after the first ozone generator 106 is operated. Specifically, a water pipe branch 213 communicated with the first ozone generator 106 can be led out from the clean water pipe 201 and behind the clean water pump 204, and a cooling water inlet control valve 214 can be mounted on the water pipe branch 213 to control the inlet process of the cooling water. After passing through the first ozone generator 106, the cooling water may flow into the sewage pipe 101 located behind the air-water pressure control mixer 107 through the cooling water pipe 215, and after being mixed with the first-stage treated sewage output from the air-water pressure control mixer 107, the cooling water flows to the water inlet pipe 302 of the reaction bin 300. A cooling water outlet control valve 216 may be further installed on the cooling water pipe 215 to control the flow rate of the cooling water.

In this embodiment, the reaction chamber 300 is used for performing a second-level disinfection and a third-level disinfection on the sewage after the first-level treatment output by the ozone gas disinfection mechanism 100, and mainly includes a chamber body 301, as shown in fig. 2, the chamber body 301 is hollow to form an inner cavity, and a strong oxidation layer, a catalyst layer and a water-collecting layer are disposed in the inner cavity.

Wherein, the water inlet pipe 302 of the reaction bin 300 is preferably arranged at the lower part of the inner cavity of the reaction bin. As a preferred embodiment, the water inlet pipe 302 is preferably transversely disposed in the inner cavity of the reaction chamber 300, and the water inlet pipe 302 may be provided with a plurality of nozzles 304, so that the sewage after the primary treatment flowing into the water inlet pipe 302 is injected into the inner cavity of the reaction chamber 300 in a spraying manner. The nozzle 304 is preferably disposed above the inlet pipe 302 and faces the direction of the strong oxidation layer, and since ozone gas which is not dissolved in the sewage is accompanied in the sewage after the primary treatment, the ozone gas can be rapidly contacted with the strong oxidation layer by upward spraying, thereby promoting the generation of hydroxyl radicals.

As shown in fig. 2, the strong oxidation layer is located above the water inlet pipe 302 and mainly consists of an ozone water inlet pipe 303 and an ultraviolet lamp 305. As a preferred embodiment, the ozone water inlet pipe 303 is preferably transversely disposed in the inner cavity of the reaction chamber 300 and above the ultraviolet lamp 305. The uv lamps 305 are preferably tubular lamps, also arranged transversely in the interior of the reaction chamber 300. A plurality of nozzles 306 are provided on the ozone water inlet pipe 303, and the nozzles 306 are preferably provided below the ozone water inlet pipe 303 toward the direction of the ultraviolet lamp 305. High-concentration ozone water solution entering the inner cavity of the reaction bin through the ozone water inlet pipe 303 is sprayed in the direction of the ultraviolet lamp 305 through the nozzle 306, the ultraviolet lamp 305 emits ultraviolet rays to irradiate the high-concentration ozone water solution, ozone and water are excited, a large amount of hydroxyl free radicals are generated, and secondary disinfection and sterilization treatment is carried out on the sewage after primary treatment in the inner cavity.

A catalyst layer is disposed over the strong oxidation layer as shown in fig. 2. The catalyst layer may be composed of a lower plate 307, a catalyst 309, and an upper platen 310.

The lower supporting plate 307 is preferably transversely arranged in the inner cavity of the reaction chamber 300 and positioned above the ozone water inlet pipe 303, and the lower supporting plate 307 is provided with a plurality of liquid filtering holes 308 for sewage to pass through. The upper press plate 310 is also preferably transversely disposed in the inner cavity of the reaction chamber 300 and located above the lower supporting plate 307, and the upper press plate 310 is also provided with a plurality of liquid filtering holes 311 for passing sewage. The space between the lower plate 307 and the upper plate 310 is filled with a catalyst 309, and the catalyst 309 is preferably a granular carbon-based rare earth catalyst. Harmful organic matters in the domestic sewage after the secondary treatment are intercepted by the catalyst 309, and then are subjected to primary oxidation and catalytic reaction with strong oxidants such as hydroxyl radicals and ozone in the water, so that the three-stage disinfection treatment is completed.

A water collecting layer is formed above the catalyst layer for collecting the sewage, i.e., tail water, after being treated by the strong oxidation layer and the catalyst layer. A tail water discharge port 312 is provided at an upper portion of the cartridge body 301 of the reaction cartridge 300, and communicates with the water collecting layer, as shown in fig. 2. When the height of the tail water gathered in the water gathering layer reaches the position of the tail water discharge port 312, the tail water flows out of the inner cavity of the reaction bin 300 through the tail water discharge port 312 and is discharged through the water outlet pipe 313 connected with the tail water discharge port 312. A tail water discharge valve 314 may be installed on the water outlet pipe 313 to control the discharge process of the tail water.

In this embodiment, a branch may be led out from the water outlet pipe 313 and connected to the tail water sampling valve 315, so as to sample the tail water and detect whether the tail water treated by the apparatus reaches the required water quality index.

Considering that the water quality index of some domestic sewage with poor water quality may not meet the discharge requirement after primary, secondary and tertiary disinfection and killing treatment, in this embodiment, a tail water returning treatment mechanism 400 is further disposed in the water treatment device, and as shown in fig. 1 and 2, tail water in the water collecting layer is returned to the water inlet pipe 302, and secondary and tertiary disinfection and killing treatment, that is, five-stage disinfection and killing treatment, is performed in the inner cavity of the reaction bin 300 through the strong oxidation layer and the catalyst layer again. If the treated tail water meets the water quality requirement, the tail water is discharged through a tail water discharge port 312; if the water quality requirement is not met, the tail water returning treatment mechanism 400 can be used for carrying out sterilization treatment for multiple times until the water quality requirement is met, and the tail water is discharged through the tail water discharge port 312.

In this embodiment, the tail water returning mechanism 400 is mainly composed of a tail water returning pipe 401, a tail water returning valve 402, and a tail water returning pump 403.

The water inlet of the tail water bin returning pipe 401 is connected with a return port 316, the return port 316 is arranged on the bin body 301 of the reaction bin 300, is communicated with the water collecting layer and is arranged at a position lower than the tail water discharge port 312; the water outlet of the tail water returning pipe 401 is connected with the water inlet pipe 302 of the reaction bin 300. And a tail water returning valve 402 is arranged on the tail water returning pipe 401 and is used for controlling the flow of the returning tail water. The tail water returning pump 403 is installed on the tail water returning pipe 401 and behind the tail water returning valve 402, and is used for conveying the returning tail water to the water inlet pipe 302 of the reaction chamber 300.

Considering that the liquid injected into the water inlet pipe 302 may be the first-stage treated sewage from the ozone sterilizing mechanism 100 or the tail water pumped by the tail water returning mechanism 400, in order to achieve the orderly water inlet control of the two water sources, it is preferable to provide a returning cabin controller 404, such as a three-way solenoid valve, on the water inlet pipe 302 for adjusting the flow rate of each water source flowing into the water inlet pipe 302.

Of course, the back-to-house automatic controller 404 may also be disposed on the sewage pipe 101 and located between the filter 103 and the sewage pump 104, so as to introduce the back-to-house tail water into the sewage pipe 101, perform the first-stage disinfection treatment with the filtered domestic sewage, and then pump the filtered domestic sewage into the water inlet pipe 302.

In addition, in this embodiment, a breathing hole 317 is further disposed on the top surface of the reaction chamber 300 and is communicated with the water collecting layer. The inner cavity of the reaction chamber 300 is connected to the outside atmosphere through the breathing hole 317, so that the air pressure in the reaction chamber 300 can be kept balanced.

In addition, in the present embodiment, a liquid level meter 320 communicating with the inner cavity of the reaction chamber can be further installed on the outer wall of the chamber body 301 of the reaction chamber 300, as shown in fig. 2, so as to monitor the liquid level change in the chamber body 301.

A slag outlet 318 and a slag outlet valve 319 can also be arranged at the bottom of the reaction bin 300, as shown in fig. 2, the opening position of the slag outlet 318 on the bin body 301 is preferably located below the water inlet pipe 302, so as to discharge slag liquid accumulated at the bottom of the reaction bin 300, and simplify the cleaning work of workers on the inside of the reaction bin 300.

The specific operation of the water treatment device of the present embodiment will be described in detail with reference to the structural design shown in fig. 2.

After the water treatment apparatus is powered on, the ozone aqueous solution preparation mechanism 200 starts to operate:

s1, the clean water valve 202 is opened, the clean water pump 204 runs, clean water enters the clean water pump 204 through the clean water valve 202 and the filter 203 along the clean water pipe 201, and is firstly pumped to the water inlet of the air-water mixer 207 through the clean water pump 204 to wait;

s2, starting a vacuum pump 208, and vacuumizing the air-water mixer 207 to form instant negative pressure vacuum in the air-water mixer 207;

s3, starting the second oxygen generator 205 and the second ozone generator 206, extracting air through the second oxygen generator 205 to generate oxygen, then conveying the oxygen to the ozone generator 206 to prepare ozone gas, and conveying the ozone gas to the gas-water mixer 207;

s4, opening a water inlet of the gas-water mixer 207, and allowing clear water to enter the gas-water mixer 207 to be biologically mixed with ozone gas in the gas-water mixer 207 under a negative pressure condition to instantly form a high-concentration ozone water solution;

s5, the water outlet pump 209 is started to pump the high concentration ozone water solution into the ozone water inlet pipe 303 through the water flow valve 210, and the high concentration ozone water solution is sprayed into the reaction chamber 300.

Then, the ozone sterilizing mechanism 100 starts to operate:

s6, opening the cooling water inlet control valve 214, introducing clean water to cool the first ozone generator 106, and then flowing into the sewage pipe 101 through the cooling water outlet control valve 216;

s7, the sewage valve 102 is opened, the sewage pump 104 is operated, and the domestic sewage enters the sewage pump 104 through the sewage valve 102 and the filter 103 along the sewage pipe 101 and enters the air-water pressure control mixer 107 under the pumping of the sewage pump 104;

s8, starting the first oxygen generator 105 to operate, generating oxygen to supply to the first ozone generator 106 to form ozone gas, and conveying the ozone gas to the gas-water pressure control mixer 107;

s9, ozone gas carries out primary disinfection treatment on the sewage entering the gas-water pressure control mixer 107 to form primary treated sewage (ozone-water-gas mixed liquid), the primary treated sewage enters the water inlet pipe 302 through the bin self-controller 404, and the primary treated sewage is sprayed into the reaction bin 300.

Then, the second-level and third-level sterilizing and killing mechanisms start to work:

s10, opening the ultraviolet lamp 305 in the reaction bin 300, releasing ultraviolet rays, exciting ozone and water, and generating a large amount of hydroxyl radicals; the water level gradually rises along with the gradual increase of the sewage injected into the bin body 301, and when the water level rises to the position of the strong oxidation layer, the secondary disinfection treatment is carried out on the sewage by utilizing the hydroxyl radicals; when the sewage is continuously lifted to the position of the catalyst layer, the sewage is subjected to three-stage disinfection treatment by using a catalyst 309; the treated tail water is gathered in the water accumulation layer, and when the liquid level reaches the position of the tail water discharge port 312, the tail water flows out of the reaction bin 300 through the tail water discharge port 312.

S11, for domestic sewage with extremely poor water quality, opening a tail water bin returning valve 402 and a tail water bin returning pump 403, extracting tail water in the water collecting layer, returning the tail water to the water inlet pipe 302 or the sewage pipe 101 through the bin returning self-controller 404, further returning the tail water to the reaction bin 300 again, and performing killing treatment through the strong oxidation layer and the catalyst layer again to improve the water quality. After the quality of the tail water reaches the standard, the tail water discharge valve 314 is opened to discharge the tail water.

The water treatment equipment of this embodiment can adopt electrified control to accomplish each item work automatically in sewage treatment process, and technological parameter accessible measurement, detection, sensor sampling etc. multiple mode obtain, can realize intelligent control and remote monitoring from this, have solved the difficult problem that biological method treatment domestic sewage can't realize intelligent control.

The water treatment equipment of the embodiment adopts the advanced oxidation technology of hydroxyl free radical, ozone catalytic oxidation and ultraviolet synergetic chain reaction, and by using the device, farmland irrigation water or primary A water can be quickly and efficiently prepared from domestic sewage, so that the primary A water quality can reach the primary A water quality in GB5084-2021 Farmland irrigation Water quality Standard or GB 18918-2002 pollutant discharge Standard of urban Sewage treatment plant.

By adopting the water treatment equipment of the embodiment, no medicine or strain is required to be added into the treated water, no secondary pollution is caused after treatment, no sludge is discharged, and the water treatment equipment is not influenced by weather temperature, water quantity, water quality and the like. Moreover, the water treatment device for treating domestic sewage has the advantages of short period, stable water quality, less energy consumption, low comprehensive cost, less occupied area, quick application and the like, and is particularly suitable for being popularized and used in resource utilization of domestic sewage in villages.

Of course, the above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. The utility model provides a domestic sewage utilization rapid processing apparatus which characterized in that includes:

the ozone gas sterilizing mechanism is used for charging ozone gas into the domestic sewage, and performing primary sterilizing on the domestic sewage by using the ozone gas to generate primary treated sewage;

the reaction bin is provided with an inner cavity for receiving the sewage after the primary treatment, and the inner cavity is internally provided with:

the strong oxidation layer comprises an ozone water inlet pipe and an ultraviolet lamp, the ozone water inlet pipe is used for being connected with an ozone water solution and sprayed into the reaction bin, the ultraviolet lamp emits ultraviolet rays to irradiate the ozone water solution to generate hydroxyl radicals, and the sewage after the primary treatment is subjected to secondary disinfection and killing to generate sewage after the secondary treatment;

and the catalyst layer is used for carrying out three-stage disinfection on the sewage subjected to the secondary treatment by using a catalyst to form tail water, and the tail water is discharged out of the reaction bin.

2. The domestic sewage resource utilization rapid treatment device according to claim 1,

a water gathering layer, the catalyst layer and the strong oxidation layer are sequentially formed in an inner cavity of the reaction bin from top to bottom;

a water inlet pipe is arranged in the reaction bin and is positioned below the strong oxidation layer, and the water inlet pipe is connected with the ozone gas sterilizing mechanism and is used for connecting the sewage after the primary treatment into the reaction bin;

a tail water discharge port is arranged at the upper part of the reaction bin and communicated with the water collecting layer; after the sewage enters the reaction bin after the primary treatment, the sewage sequentially passes through the strong oxidation layer and the catalyst layer along with the rising of the liquid level, is gathered to the water gathering layer, and when the liquid level reaches the position of the tail water discharge port, the sewage is discharged through the overflow of the tail water discharge port to the reaction bin.

3. The domestic sewage resource utilization rapid treatment device as claimed in claim 2, wherein the water inlet pipe is transversely arranged in the inner cavity of the reaction bin, a plurality of nozzles are arranged on the water inlet pipe, and the ozone gas which is not consumed in the primary treated sewage and the sewage is sprayed into the reaction bin through the nozzles.

4. The domestic sewage resource utilization rapid treatment device as claimed in claim 2, wherein in the strong oxidation layer, the ozone water inlet pipe and the ultraviolet lamp are both transversely arranged in the inner cavity of the reaction bin, the ozone water inlet pipe is positioned above the ultraviolet lamp, and a plurality of nozzles are arranged on the ozone water inlet pipe and used for spraying the ozone water solution to the ultraviolet lamp.

5. The domestic sewage resource utilization rapid treatment device according to claim 2, wherein the catalyst layer comprises:

the lower supporting plate is transversely arranged in the inner cavity of the reaction bin and used for supporting the catalyst, and a plurality of liquid filtering holes are formed in the lower supporting plate;

the upper pressing plate is transversely arranged in the inner cavity of the reaction bin, is positioned above the lower supporting plate and presses the catalyst; the upper pressure plate is provided with a plurality of liquid filtering holes, sewage enters the catalyst layer through the liquid filtering holes of the lower supporting plate after secondary treatment of the strong oxidation layer, and enters the water collecting layer through the liquid filtering holes of the upper pressure plate after catalytic reaction with the catalyst.

6. The domestic sewage resource utilization rapid treatment device according to claim 2,

a breathing hole is formed in the top surface of the reaction bin and communicated with the water collecting layer;

the bottom of the reaction bin is provided with a slag outlet and a slag outlet valve for discharging slag liquid gathered at the bottom of the reaction bin.

7. The domestic sewage resource utilization rapid treatment device according to claim 1, wherein the ozone gas disinfection mechanism comprises:

the sewage pipe is connected with the reaction bin and is used for accessing domestic sewage;

the filter is connected to the sewage pipe and used for filtering suspended matters in the sewage;

the first oxygen generator is used for accessing air, discharging nitrogen after carrying out nitrogen-oxygen gas separation on the air and conveying oxygen;

the first ozone generator is used for accessing oxygen conveyed by the first oxygen generator and generating ozone gas;

the gas-water pressure control mixer is connected to the sewage pipe, receives the ozone gas transmitted by the first ozone generator, and is used for controlling the concentration of the ozone gas dissolved into the sewage to generate the sewage after primary treatment;

and the sewage pump is connected to the sewage pipe and used for pumping sewage to the air-water pressure control mixer and pumping the sewage subjected to the primary treatment to the reaction bin.

8. The domestic sewage resource utilization rapid treatment device according to claim 1, further comprising an ozone aqueous solution preparation mechanism for preparing the ozone aqueous solution, comprising:

the clear water pipe is used for accessing clear water and is connected with the ozone water inlet pipe;

the second oxygen generator is connected with air, discharges nitrogen after carrying out nitrogen-oxygen separation on the air and conveys oxygen;

the second ozone generator is connected with the oxygen conveyed by the second oxygen generator and generates ozone gas;

the air-water mixer is connected to the clean water pipe and receives the ozone gas delivered by the second ozone generator;

the vacuum pump is connected with the gas-water mixer, so that the clean water and the ozone gas entering the gas-water mixer are physically mixed in a negative pressure or vacuum state to form high-concentration ozone water solution;

the clean water pump is connected to the clean water pipe, is positioned in front of the gas-water mixer and is used for pumping clean water into the gas-water mixer;

and the water outlet pump is connected to the clear water pipe, is positioned behind the gas-water mixer and is used for pumping the high-concentration ozone water solution to the ozone water inlet pipe.

9. The domestic sewage resource utilization rapid treatment device according to any one of claims 2 to 8, further comprising:

and the tail water returning and treating mechanism is connected with the reaction bin and is used for pumping the tail water in the reaction bin and returning the tail water to the reaction bin again, so that the tail water passes through the strong oxidation layer and the catalyst layer again to be killed.

10. The domestic sewage resource utilization rapid treatment device according to claim 9, wherein the tail water returning treatment mechanism comprises:

the tail water bin returning pipe is communicated with the water accumulation layer of the reaction bin, and the communication position of the tail water bin returning pipe is lower than the tail water discharge port;

the tail water bin returning valve is arranged on the tail water bin returning pipe and used for controlling the flow of the tail water returning to the bin;

and the tail water returning pump is arranged on the tail water returning pipe and used for conveying the returning tail water to the water inlet pipe of the reaction bin.

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