CN115745281A - High salt waste water biochemical treatment system - Google Patents
High salt waste water biochemical treatment system Download PDFInfo
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- CN115745281A CN115745281A CN202211490809.8A CN202211490809A CN115745281A CN 115745281 A CN115745281 A CN 115745281A CN 202211490809 A CN202211490809 A CN 202211490809A CN 115745281 A CN115745281 A CN 115745281A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The invention relates to the field of water treatment, in particular to a high-salinity wastewater biochemical treatment system. A high-salinity wastewater biochemical treatment system comprises a treatment system body, wherein the treatment system body comprises a storage pool, the storage pool is connected with a regulating pool, the regulating pool is provided with a first water discharge port and a second water discharge port, the first water discharge port is connected with a static mixer, the static mixer is provided with an air inlet, the air inlet is connected with an ozone generator, and the static mixer is connected with a first lifting pump; the second water outlet is provided with a flow regulating valve, the second water outlet is connected with a first lifting pump, and the first lifting pump is connected with a water distribution pipe arranged at the lower part of the inner side of the mixing tank. The method treats the high-salinity wastewater by the ozone method, improves the utilization efficiency and the oxidation capacity of the ozone in the wastewater treatment process, further reduces the time required by the wastewater with low biodegradability in the treatment process, improves the treatment effect of the high-salinity wastewater, and has the advantages of small occupied area, no secondary pollution and the like.
Description
Technical Field
The invention relates to the field of water treatment, in particular to a high-salinity wastewater biochemical treatment system.
Background
In the chemical wastewater treatment process, the sources and the compositions of wastewater are different, more treatment process methods are adopted, but the aim of reducing the COD content of the wastewater and finally recovering part of 'light' water is achieved, therefore, after the COD value of the wastewater treatment reaches the standard, reverse osmosis and other technologies are further adopted, part of 'light' water is recovered for reuse, so as to save water resources, in the whole process, the salt content in the wastewater is increased and high salt water is formed due to the addition of a pretreatment system, a water treatment agent and the reuse of water, a plurality of industrial wastewater contain organic/inorganic mixed pollutants, and even some wastewater contains pollutants which are not beneficial to the survival or the biochemical degradation of microorganisms, so that the biodegradability of the wastewater is not high, and the biodegradability of the wastewater reflects the utilization speed of the microorganisms to the organic pollutants in the treatment process besides showing the utilization degree and the utilization degree of the organic pollutants in the wastewater. The main reason for the variability of biodegradability of wastewater is that the organic substances contained in wastewater, besides being easily decomposed and utilized by microorganisms, are not easily degraded by microorganisms, even inhibiting the growth of microorganisms, and the biodegradation property and relative content of these organic substances in wastewater determine the feasibility and difficulty of the biological treatment of wastewater, usually referred to as aerobic biological treatment. However, the existing method has the problems that the decomposition and utilization speed of microorganisms is too low in the treatment process of wastewater with low biodegradability, so that the required time of the treatment process is too long, the treatment effect of the wastewater is influenced, and the like.
An effective solution to the problems in the related art has not been proposed yet.
Disclosure of Invention
The invention aims to provide a biochemical treatment system for high-salinity wastewater, so as to solve at least one technical problem.
In order to achieve the purpose, the invention adopts the following technical scheme:
a biochemical treatment system for high-salinity wastewater comprises a treatment system body and is characterized in that the treatment system body comprises a storage pool for storing raw high-salinity wastewater, a water outlet of the storage pool is connected with a water inlet of an adjusting pool, the adjusting pool is provided with a first water outlet and a second water outlet, the first water outlet is connected with a liquid inlet of a static mixer, the static mixer is provided with an air inlet, the air inlet is connected with an air outlet of an ozone generator, and a liquid outlet of the static mixer is connected with a water inlet of a first lift pump;
a flow regulating valve is arranged at the second water outlet, the second water outlet is connected with the water inlet of the first lift pump, the water outlet of the first lift pump is connected with a water distribution pipe arranged at the lower part of the inner side of the mixing tank, and a jet orifice is arranged on the water distribution pipe;
the upper portion of the mixing tank is provided with a first overflow port, the first overflow port is connected with a water inlet of the aeration tank, the upper portion of the aeration tank is provided with a second overflow port, the second overflow port is connected with a water inlet of the anaerobic tank, the upper portion of the anaerobic tank is provided with a third overflow port, the third overflow port is connected with a water inlet of the aerobic tank, the upper portion of the aerobic tank is provided with a fourth overflow port, and the fourth overflow port is connected with a water inlet of the clarification tank.
The water outlet of the storage pool is connected with the water inlet of the regulating pool through a pipeline, and a second lifting pump is arranged on the pipeline for connecting the water outlet of the storage pool with the water inlet of the regulating pool.
The first drainage port is connected with the liquid inlet of the static mixer through a pipeline, and a third lifting pump is arranged on the pipeline for connecting the first drainage port with the liquid inlet of the static mixer.
The water distribution pipes are distributed at the lower part of the inner side of the mixing tank along the inner wall profile direction of the mixing tank;
the number of the jet ports is at least three, and the at least three jet ports are arranged on the water distribution pipe at equal intervals.
And an air compressor is arranged on one side of the aeration tank, an air outlet of the air compressor is connected with an air conveying pipe, an air outlet is arranged on the air conveying pipe, and the air outlet is arranged at the lower part of the inner side of the aeration tank.
And a filter press for discharging sewage of the filter pressing clarification tank is arranged on one side of the clarification tank, and produced water of the filter press is conveyed into the aerobic tank through a return pipe.
Collecting raw water of high-salinity wastewater into the storage tank for caching, pumping the raw water into the regulating tank through a second lifting pump for homogenizing and equalizing, pumping liquid from a first water discharge port of the regulating tank through a third lifting pump for feeding the liquid into the static mixer, feeding ozone oxidizing gas into the static mixer through the ozone generator, mixing the ozone oxidizing gas by the static mixer to form ozone-containing liquid, regulating the water flow of a second water discharge port of the regulating tank through a flow regulating valve, mixing the ozone-containing liquid with the ozone-containing liquid again, feeding the ozone-containing liquid into a water distribution pipe at the lower part of the inner side of the mixing tank through the first lifting pump, uniformly spraying the incoming water to the periphery of the mixing tank through the water distribution pipe, fully mixing and reacting in the mixing tank, flowing into the aeration tank through a first overflow port of the mixing tank, rubbing and mixing compressed air with water in the aeration tank for decomposing COD (chemical oxygen demand) in the process, feeding the water in the aeration tank into the anaerobic tank through a second overflow port, feeding the water in the aerobic sludge settling tank into the aerobic sludge settling tank through a fourth sludge-producing and aerobic sludge separating system, and feeding the aerobic sludge settling tank for aerobic sludge-producing sludge and recycling.
Through the design, the invention provides the high-salinity wastewater biochemical treatment system, the high-salinity wastewater is treated by the ozone method, the utilization efficiency and the oxidation capacity of ozone in the wastewater treatment process are improved, the time required by the wastewater with low biochemical property in the treatment process is further reduced, the high-salinity wastewater treatment effect is improved, and the system has the advantages of small floor area, no secondary pollution and the like.
Drawings
FIG. 1 is a schematic process flow diagram of the present invention.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings.
As shown in fig. 1, a biochemical treatment system for high-salinity wastewater comprises a treatment system body, wherein the treatment system body comprises a storage pool 1 for storing raw high-salinity wastewater, a water outlet of the storage pool 1 is connected with a water inlet of an adjusting pool 3, the adjusting pool 3 is provided with a first water discharge port and a second water discharge port, the first water discharge port is connected with a liquid inlet of a static mixer 5, the static mixer 5 is provided with a gas inlet, the gas inlet is connected with a gas outlet of an ozone generator 6, and a liquid outlet of the static mixer 5 is connected with a water inlet of a first lift pump 7; a flow regulating valve is arranged at the second water outlet, the second water outlet is connected with the water inlet of the first lift pump 7, the water outlet of the first lift pump 7 is connected with a water distribution pipe arranged at the lower part of the inner side of the mixing tank 8, and a jet orifice is arranged on the water distribution pipe; the upper portion of mixing tank 8 is equipped with first overflow mouth, and the water inlet of aeration tank 9 is connected to first overflow mouth, and the upper portion of aeration tank 9 is equipped with the second overflow mouth, and the water inlet of anaerobism pond 11 is connected to the second overflow mouth, and the upper portion of anaerobism pond 11 is equipped with the third overflow mouth, and the water inlet of good oxygen pond 12 is connected to the third overflow mouth, and the upper portion of good oxygen pond 12 is equipped with the fourth overflow mouth, and the water inlet of depositing reservoir 13 is connected to the fourth overflow mouth. Through the design, the invention provides the high-salinity wastewater biochemical treatment system, the high-salinity wastewater is treated by the ozone method, the utilization efficiency and the oxidation capacity of ozone in the wastewater treatment process are improved, the time required by the wastewater with low biochemical property in the treatment process is further reduced, the high-salinity wastewater treatment effect is improved, and the system has the advantages of small floor area, no secondary pollution and the like.
Ozone is a strong oxidant, can oxidize various organic matters and inorganic matters, and remove poisons which are sensitive to the high oxidation activity of the ozone, such as phenols, benzene rings, cyanides, sulfides, nitrites, iron, manganese, organic nitrogen compounds and the like, in the design, ozone gas is mixed with the effluent of a first water outlet of an adjusting tank 3 in advance through a static mixer 5 to form ozone-containing liquid, the effluent flow of a second water outlet of the adjusting tank 3 is adjusted through a flow adjusting valve, the ozone-containing liquid is mixed again and is sent into a water distribution pipe at the lower part of the inner side of a mixing tank 8 through a first lifting pump 7, and the ozone is sprayed into the mixing tank 8 from bottom to top through an upper spray opening of the water distribution pipe, so that the mixing effect of the ozone and the high-salt wastewater is improved, and the oxidation treatment effect of the ozone on the high-salt wastewater is further improved.
In order to facilitate sending the water in the storage pool 1 into the regulating pool 3, the water outlet of the storage pool 1 is connected with the water inlet of the regulating pool 3 through a pipeline, and a second lifting pump 2 is arranged on the pipeline for connecting the water outlet of the storage pool 1 with the water inlet of the regulating pool 3.
The first water discharge port is connected with a liquid inlet of the static mixer 5 through a pipeline, and a third lift pump 4 is arranged on the pipeline for connecting the first water discharge port with the liquid inlet of the static mixer 5. The third lift pump 4 increases the water pressure flowing through the static mixer 5 to generate a local high pressure condition, so that the ozone is rapidly decomposed in a gaseous state, thereby enhancing the oxidation capacity of the ozone and accelerating the reaction speed.
The water distribution pipes are arranged at the lower part of the inner side of the mixing tank 8 along the inner wall profile direction of the mixing tank 8; the number of the jet ports is at least three, and the at least three jet ports are arranged on the water distribution pipe at equal intervals. So that the liquid containing ozone fills into mixing tank 8 from bottom to top, and form the effect of even stirring, avoid mixing tank 8 upper strata to reduce the treatment effect because of ozone reduces, and then guarantee the holistic ozone oxidation treatment effect in the mixing tank 8.
One side of aeration tank 9 is equipped with air compressor 10, and air delivery pipe is connected to air compressor's 10 gas outlet, is equipped with the gas vent on the air delivery pipe, and the gas vent setting is in aeration tank's 9 inboard lower part, and is abundant mixed with liquid friction through compressed air, improves the effect of decomposition COD.
The upper part of the clarification tank 13 is provided with a third water outlet for discharging supernatant, and the third water outlet is connected with a reuse water pipe. A filter press 14 for discharging sewage of the filter pressing clarification tank 13 is arranged on one side of the clarification tank 13, and the produced water of the filter press 14 is conveyed into the aerobic tank 12 through a return pipe. And (3) carrying out mud-water separation by a clarification tank 13, passing the supernatant through a reuse water pipe recycling system, feeding the mud-water mixed liquor into a filter press 14, feeding the water produced by the filter press 14 into an aerobic tank 12 for treatment, and carrying out outward treatment on the produced mud.
When the treatment system body operates, high-salinity wastewater raw water can be collected into the storage pool 1 for caching, and then is conveyed into the regulating pool 3 through the second lift pump, the pH value, the water quality and the water quantity of the raw water are regulated in the regulating pool 3, the liquid is extracted from the first water outlet of the regulating pool 3 through the third lift pump and is conveyed into the static mixer 5, the ozone gas is added into the static mixer 5 through the ozone generator 6, the ozone gas is mixed by the static mixer 5 to form ozone-containing liquid, the water outlet flow of the second water outlet of the regulating pool 3 is regulated through the flow regulating valve, the ozone-containing liquid is mixed again and is conveyed into the water distribution pipe at the lower part of the inner side of the mixing pool 8 through the first lift pump 7, the incoming water is uniformly sprayed to the periphery in the mixing pool 8 through the water distribution pipe, and is fully mixed and reacted through the mixing pool 8, the water in the aeration tank 9 enters the anaerobic tank 11 through the second overflow port, and stays in the anaerobic tank 11 for at least 6 hours, the BOD in the water is hydrolyzed by utilizing the anaerobic acidolysis effect, the biodegradability is increased, the water in the anaerobic tank 11 enters the aerobic tank 12 through the third overflow port, the BOD is oxidatively decomposed through the active sludge in the aerobic tank 12, the water in the aerobic tank 12 enters the clarification tank 13 through the fourth overflow port for mud-water separation, a supernatant recycling system in the clarification tank 13, mud-water mixed liquid enters the filter press, the produced water of the filter press is sent back to the aerobic tank 12, and the produced mud of the filter press is transported and treated.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the invention as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A biochemical treatment system for high-salinity wastewater comprises a treatment system body and is characterized in that the treatment system body comprises a storage pool for storing raw high-salinity wastewater, a water outlet of the storage pool is connected with a water inlet of an adjusting pool, the adjusting pool is provided with a first water outlet and a second water outlet, the first water outlet is connected with a liquid inlet of a static mixer, the static mixer is provided with a gas inlet, the gas inlet is connected with a gas outlet of an ozone generator, and a liquid outlet of the static mixer is connected with a water inlet of a first lift pump;
a flow regulating valve is arranged at the second water outlet, the second water outlet is connected with the water inlet of the first lift pump, the water outlet of the first lift pump is connected with a water distribution pipe arranged at the lower part of the inner side of the mixing tank, and a jet orifice is arranged on the water distribution pipe;
the upper portion of the mixing tank is provided with a first overflow port, the first overflow port is connected with a water inlet of the aeration tank, the upper portion of the aeration tank is provided with a second overflow port, the second overflow port is connected with a water inlet of the anaerobic tank, the upper portion of the anaerobic tank is provided with a third overflow port, the third overflow port is connected with a water inlet of the aerobic tank, the upper portion of the aerobic tank is provided with a fourth overflow port, and the fourth overflow port is connected with a water inlet of the clarification tank.
2. The biochemical treatment system for high-salinity wastewater according to claim 1, wherein the water outlet of the storage tank is connected with the water inlet of the regulating tank through a pipeline, and a second lift pump is arranged on the pipeline for connecting the water outlet of the storage tank with the water inlet of the regulating tank.
3. The biochemical treatment system for high-salinity wastewater according to claim 1, wherein the first drainage port is connected with the liquid inlet of the static mixer through a pipeline, and a third lift pump is installed on the pipeline for connecting the first drainage port with the liquid inlet of the static mixer.
4. The biochemical high-salinity wastewater treatment system according to claim 1, wherein the water distribution pipes are arranged at the lower inner part of the mixing tank along the contour direction of the inner wall of the mixing tank;
the number of the jet ports is at least three, and the at least three jet ports are arranged on the water distribution pipe at equal intervals.
5. The biochemical treatment system for high-salinity wastewater according to claim 1, wherein an air compressor is arranged at one side of the aeration tank, an air outlet of the air compressor is connected with an air conveying pipe, an air outlet is arranged on the air conveying pipe, and the air outlet is arranged at the lower part of the inner side of the aeration tank.
6. The high-salinity wastewater biochemical treatment system according to claim 1, wherein a filter press for discharging sewage of a filter press clarifier is arranged on one side of the clarifier, and the produced water of the filter press is conveyed into the aerobic pond through a water return pipe.
7. The system as claimed in claim 1, wherein raw water of high salinity wastewater is collected in the storage tank, buffered, delivered to the conditioning tank by the second lift pump, homogenized and homogenized, and delivered to the static mixer from the first water outlet of the conditioning tank by the third lift pump, ozone oxidizing gas is fed to the static mixer by the ozone generator, mixed by the static mixer to form ozone-containing liquid, the water flow rate of the second water outlet of the conditioning tank is adjusted by the flow adjusting valve, and is mixed with ozone-containing liquid again and delivered to the water distribution pipe at the lower part of the inner side of the mixing tank by the first lift pump, the incoming water is uniformly sprayed to the periphery of the mixing tank through the water distribution pipe, and after fully mixed and reacted in the mixing tank, flows into the aeration tank through the first overflow port of the mixing tank, and then is mixed with water in the aeration tank by friction of compressed air, and COD is decomposed during the process, the water in the aeration tank enters the anaerobic sludge-producing tank through the second overflow port, and stays in the anaerobic sludge-decomposing tank for at least 6 hours, and is delivered to the aerobic sludge-producing sludge-water-decomposing pool by the anaerobic sludge-decomposing and aerobic sludge-decomposing system, and the aerobic sludge-producing aerobic sludge-decomposing system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211490809.8A CN115745281A (en) | 2022-11-25 | 2022-11-25 | High salt waste water biochemical treatment system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211490809.8A CN115745281A (en) | 2022-11-25 | 2022-11-25 | High salt waste water biochemical treatment system |
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| Publication Number | Publication Date |
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| CN115745281A true CN115745281A (en) | 2023-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211490809.8A Pending CN115745281A (en) | 2022-11-25 | 2022-11-25 | High salt waste water biochemical treatment system |
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2022
- 2022-11-25 CN CN202211490809.8A patent/CN115745281A/en active Pending
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