AU2019100931A4 - System for deep treatment of oily port sewage through advanced oxidation and adsorption - Google Patents

System for deep treatment of oily port sewage through advanced oxidation and adsorption Download PDF

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AU2019100931A4
AU2019100931A4 AU2019100931A AU2019100931A AU2019100931A4 AU 2019100931 A4 AU2019100931 A4 AU 2019100931A4 AU 2019100931 A AU2019100931 A AU 2019100931A AU 2019100931 A AU2019100931 A AU 2019100931A AU 2019100931 A4 AU2019100931 A4 AU 2019100931A4
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pipe
water outlet
adsorption
water
reactor
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AU2019100931A
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Shitao Peng
Yanjie WEI
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Tianjin Research Institute for Water Transport Engineering MOT
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Tianjin Research Institute for Water Transport Engineering MOT
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Abstract

A system for deep treatment of oily port sewage through advanced oxidation and adsorption, which includes a biological treatment device, an activated carbon adsorption device and an ozone catalytic-oxidation device which are connected sequentially; a tray is arranged in the closed cylindrical adsorption reactor, which is formed by adhesion of a plurality of pieces of gravel; the ozone catalytic-oxidation device includes a cylindrical catalytic reactor having an opening at the bottom, an aerator, a tail gas breaker, an ozone generator, and a water storage tank; which the first water outlet pipe has an end communicated with the second water outlet pipe and is provided with a flow control valve; the treatment system has the characteristics of compact device structure, small area occupation, and stable outflow water quality, can be used for deep treatment of oily port sewage to further eliminate the non-biodegradable pollutants in the oily sewage.

Description

SYSTEM FOR DEEP TREATMENT OF OILY PORT SEWAGE THROUGH ADVANCED OXIDATION AND ADSORPTION
TECHNICAL FIELD
The invention relates to the technical field of sewage treatment, in particular to a system for deep treatment of oily port sewage through advanced oxidation and adsorption.
BACKGROUND
The Action Plan for Prevention and Control of Water Pollution (namely the Ten-measure Action Plan to Tackle Water Pollution) has been released, wherein the prevention and control of water pollution of inland rivers and coastal ports is of great importance. In recent years, the large-scale development of domestic ports has led to a greater and greater demand for the treatment of oily sewage, such as tank cleaning water, cabin cleaning water, and ballast water generated by marine transport, and an internal guarantee for harbor basins.
Comprehensive treatment and recycling of port sewage have a direct influence on the environmental quality of the ports which are used as land-water connection hubs, stevedoring hubs, and transfer hubs, and on the construction level of resource-saving ports. To implement the scientific development planning outlines and the related conference spirit of the Central Committee, the State Council, and the Ministry of Transport, supporting pollutant treatment facilities have been sequentially constructed at major ports in China, and the treatment of oily port sewage and the operation of the facilities are being gradually promoted. However, the treatment and recycling technology for the oily port sewage is complex and difficult to implement due to the special geographic positions of water transport ports and the complexity of oily port-produced sewage, such as the high oil concentration, serious fluctuations of the water quality and water quantity, high pollutant concentration, and complex pollutant constituents. Besides, on the aspect of prevention and control of water pollution in the field of transportation, the design specifications of many water supply and drainage projects and reclaimed-water recycling projects still refer to the design specifications of urban architectures, and community and municipal projects. However, the unique water quality characteristics of the oily port sewage and the unique regional characteristics of the ports
2019100931 19 Aug 2019 result in a lack of targeted design methods and calculation bases for oil treatment projects of the ports, and the lack of key technologies for model selection, construction, installation, and operation maintenance of the facilities, which in turn causes the problems of unreasonable selection of key process facilities, mismatching of the treatment capacity of structures with actual demands, imperfect operation and management systems, and so on, and consequentially, the construction of an environment-friendly circulating transportation system is greatly hindered, and failure to reach the standards and instable operation. Frequent overhaul, low port sewage treatment level, and low recycling rate of certain constructed buildings are caused. Due to the fact that these problems have seriously threatened the ecological environments of bays of the coastal ports, supporting technologies and products suitable for practical oily port sewage treatment work should be instantly developed. Thus, there is an urgent need at present to develop an economic, efficient, and feasible process for deep treatment of oily port sewage.
Any discussion of the prior art throughout the specification should in no way be considered as an admission that such prior art is widely known or forms part of common general knowledge in the field.
SUMMARY
In certain embodiments, the objective of the invention is to provide a system for deep treatment of oily port sewage through advanced oxidation and adsorption to eliminate non-biodegradable pollutants in the oily port sewage by means of deep treatment of the oily port sewage.
It is an object of the present invention to overcome or ameliorate at least one of the disadvantages of the prior art, or to provide a useful alternative.
The invention solves the technical problem by adopting the following technical solution:
A system for deep treatment of oily port sewage through advanced oxidation and adsorption, which includes a biological treatment device, an activated carbon adsorption device and an ozone catalytic-oxidation device which are connected sequentially;
wherein the activated carbon adsorption device includes a closed cylindrical adsorption reactor, and a tray arranged in the closed cylindrical adsorption reactor to divide the internal space of the adsorption reactor into an upper adsorption area filled with activated carbon granules, and a lower water inlet area is fixed to the inner wall of the adsorption reactor and
2019100931 19 Aug 2019 is of a cylindrical porous structure formed by adhesion of a plurality of pieces of gravel; and the adsorption reactor has a bottom provided with a water inlet pipe and a top wall provided with a water outlet pipe, and an air inlet pipe is arranged on the side wall, which is provided with the tray of the adsorption reactor;
wherein the ozone catalytic-oxidation device includes a cylindrical catalytic reactor having an opening at the bottom, an aerator, a tail gas breaker, an ozone generator, and a water storage tank, wherein; the aerator is arranged at the bottom of the catalytic reactor, and a microporous aeration disk of the aerator is arranged at the opening at the bottom of the catalytic reactor; a catalyst cylinder filled with catalyst is arranged in the middle of the catalytic reactor, and a plurality of overflow holes are uniformly formed in the catalyst cylinder; and a gas overflow pipe connected with the tail gas breaker through a gas supply pipe is arranged at the top of the catalytic reactor; wherein the water storage tank has a water inlet end connected with the water outlet pipe of the adsorption reactor through a pipe and a water outlet end connected with the water inlet pipe of the aerator through a pipe, a first metering pump is arranged on a connecting pipe between the water outlet end of the water storage tank and the water inlet pipe of the aerator; and wherein the gas outlet end of the ozone generator is connected with the air inlet pipe of the aerator through a gas delivery pipe; and a water outlet end is arranged on the side wall of the catalytic reactor located above the catalyst cylinder and is connected with a first water outlet pipe, the water outlet end of the aerator is connected with a second water outlet pipe, the first water outlet pipe has an end communicated with the second water outlet pipe and is provided with a first flow control valve, and a second flow control valve and a third flow control valve are arranged on the second water outlet pipe and are respectively located on two sides of a joint of the second water outlet pipe and the first water outlet pipe; and a second metering pump is arranged on the second water outlet pipe and is located between the water outlet end of the aerator and the joint of the second water outlet pipe and the first water outlet pipe.
Furthermore, the biological treatment device is an A/O bioreactor or a membrane bioreactor.
Furthermore, a sewage tank is arranged between the biological treatment device and the ozone catalytic-oxidation device and has a water inlet end connected with the water outlet end of the biological treatment device through a water delivery pipe and a water outlet end connected with the water inlet pipe of the adsorption reactor through a water delivery pipe, and a third metering pump is arranged on a connecting pipe between the water outlet end of
2019100931 19 Aug 2019 the sewage tank and the water inlet end of the ozone catalytic-oxidation device.
Furthermore, a three-way valve is arranged at an external opening of the water inlet pipe of the adsorption reactor, one of the remaining two ends of the three-way pipe is connected with the water delivery pipe connected to the water outlet end of the sewage tank, the last remaining end of the three-way pipe is connected with a water overflow pipe, and flow control valves are respectively arranged on the water delivery pipe and the water overflow pipe.
Furthermore, an overflow opening is formed in the water outlet pipe of the adsorption reactor and is provided with an on-off valve.
Furthermore, the total volume of the activated carbon granules filling the space of the adsorption area of the cylindrical adsorption reactor accounts for 40%-65% of the space volume of the adsorption area.
Compared with the prior art, the system for deep treatment of oily port sewage through advanced oxidation and adsorption has the following beneficial effects:
(1) The treatment system has the characteristics of compact device structure, small area occupation, stable outflow water quality, wide application scope, and so on;
(2) The treatment system can be used for deep treatment of oily port sewage to further eliminate the non-biodegradable pollutants in the oily sewage and can adapt to fluctuations of water quality and water quantity;
(3) The treatment system is easy to operate and can be widely applied to the design of systems for deep treatment of the oily port sewage and upgrading and improvements of the existing systems.
DESCRIPTION OF DRAWINGS
Fig. 1 is a structural view of a system for deep treatment of oily port sewage through advanced oxidation and adsorption of the invention;
Fig. 2 is a structural view of an activated carbon adsorption device of the system for deep treatment of oily port sewage through advanced oxidation and adsorption of the invention;
Fig. 3 is a structural view of an ozone catalytic-oxidation device of the system for deep treatment of oily port sewage of through advanced oxidation and adsorption of the invention.
2019100931 19 Aug 2019
DETAILED DESCRIPTION
The invention is further expounded as follows in combination with the accompanying drawings and embodiments, but is not limited to the following embodiments. Besides, unless otherwise explicitly specified or defined, the terms such as “connection” and “connected” should be understood broadly in the description of this embodiment.
As shown in Fig. 1, a system for deep treatment of oily port sewage through advanced oxidation and adsorption includes a biological treatment device, an activated carbon adsorption device and an ozone catalytic-oxidation device which are connected sequentially.
The biological treatment device is an A/O bioreactor or a membrane bioreactor and primarily treats oily sewage by means of a biological treatment method.
As shown in Fig. 2, the activated carbon adsorption device includes a closed cylindrical adsorption reactor 1, wherein a tray 2 is arranged in the closed cylindrical adsorption reactor 1 to divide the internal space of the adsorption reactor 1 into an upper adsorption area filled with activated carbon granules, and a lower water inlet area; and the adsorption reactor 1 has a bottom provided with a water inlet pipe and a top wall provided with a water outlet pipe, and an air inlet pipe 4 provided with a flow control valve is arranged on the side wall, which is provided with the tray 2, of the adsorption reactor 1; specifically,
The tray 2 is of a cylindrical porous structure formed by adhesion of a plurality of pieces of gravel having a particle size of 2-10mm and is fixed to the inner wall of the adsorption reactor 1. Besides, the total volume of the activated carbon granules filling the space of the adsorption area of the cylindrical adsorption reactor 1 accounts for 40%-65% of the space volume of the adsorption area, wherein the particle size of the activated carbon granules is greater than 90% (namely the activated carbon granules can pass through a 200-mesh sieve);
The adsorption reactor 1 has the bottom provided with the water inlet pipe and the top wall provided with the water outlet pipe, and the air inlet pipe 4 provided with the flow control valve is arranged on the side wall, which is provided with the tray 2, of the adsorption reactor 1.
A sewage tank 7 is arranged between the biological treatment device and the ozone catalytic-oxidation device and has a water inlet end connected with the water outlet end of the biological treatment device through a water delivery pipe and a water outlet end connected with the water inlet pipe of the adsorption reactor 1 through a water delivery pipe, and a third
2019100931 19 Aug 2019 metering pump 8 is arranged on a connecting pipe between the water outlet end of the sewage tank 7 and the water inlet end of the ozone catalytic-oxidation device.
Waste water primarily treated by the biological treatment device enters the sewage tank 7 and is then pumped into the adsorption reactor 1 by the third metering pump 8 according to the treatment capacity of the ozone catalytic-oxidation device, and afterwards, the waste water enters the adsorption area via tiny holes in the tray 2; and meanwhile, an air pumping device connected with the air inlet pipe 4 is started to pump air into the adsorption area of the adsorption reactor 1 via the tiny holes in the tray 2, so that the activated carbon granules filling the adsorption area are suspended under the action of the air flow and sufficiently make contact with the waste water to carry out adsorption reaction, and the waste water treated by means of adsorption is discharged via the water outlet pipe.
A three-way valve is arranged at an external opening of the water inlet pipe of the adsorption reactor 1, one of the remaining two ends of the three-way valve is connected with the water delivery pipe connected to the water outlet end of the sewage tank 7, the last remaining end of the three-way valve is connected with a water overflow pipe, and the water delivery pipe and the water overflow pipe are each provided with a flow control valve. Correspondingly, an overflow opening 5 is formed in the water outlet pipe of the adsorption reactor 1 and is provided with an on-off valve. Through the configuration of the overflow pipe and the overflow opening 5, the overflow opening 5 formed in the water outlet pipe and the water inlet pipe can be communicated with the water overflow pipe to discharge the waste water when the activated carbon adsorption device cannot normally discharge water due to the fact that the water outlet pipe is blocked by activated carbon.
As shown in Fig. 3, the ozone catalytic-oxidation device includes a cylindrical catalytic reactor 9 having an opening at the bottom, an aerator 11, a tail gas breaker 12, an ozone generator 13, and a water storage tank 14, wherein:
The gas outlet end of the ozone generator 13 is connected with an air inlet pipe of the aerator 11 through a gas delivery pipe, the aerator 11 is fixedly arranged at the bottom of the catalytic reactor 9, a microporous aeration disk of the aerator 11 is arranged at the opening at the bottom of the catalytic reactor 9, and the waste water and ozone in the aerator 11 enter the catalytic reactor via tiny holes in the microporous aeration disk; a catalyst cylinder 10 filled with TiO2 catalysts is arranged in the middle of the catalytic reactor 9; specifically, A12O3 is used as carriers of the TiO2 catalysts, and active matter loaded with Cu and Mn is soaked in
2019100931 19 Aug 2019 the TiO2 catalysts; tiny holes are formed in the catalyst cylinder 10 to guarantee that the waste water and the ozone can enter the catalyst cylinder 10, so that non-biodegradable and insoluble pollutants in the waste water are subjected to a catalytic oxidation reaction with the ozone under the action of the catalysts; and a plurality of overflow holes are uniformly formed in the top surface and the bottom surface of the catalyst cylinder 10, so that the waste water and the ozone sufficiently react with the catalysts after entering the catalyst cylinder 10 from the bottom of the catalyst cylinder 10, and then flow out of the catalyst cylinder 10 from the top to end the catalytic oxidation treatment process.
A gas overflow pipe connected with the tail gas breaker 12 through a gas supply pipe is arranged at the top of the catalytic reactor 9 and is used for collecting the unreacted ozone overflowing from the catalytic reactor for treatment. The water storage tank 14 has a water inlet end connected with the water outlet pipe of the adsorption reactor 1 through a pipe and a water outlet end connected with the water inlet pipe of the aerator 11 through a pipe, and a first metering pump 15 is arranged on the connecting pipe between the water outlet end of the water storage tank 14 and the water inlet pipe of the aerator 11.
A water outlet end is arranged on the side wall of the catalytic reactor 9 located above the catalyst cylinder and is connected with a first water outlet pipe, the water outlet end of the aerator 11 is connected with a second water outlet pipe, the first water outlet pipe has an end communicated with the second water outlet pipe and is provided with a first flow control valve 17, and a second flow control valve 18 and a third flow control valve 19 are arranged on the second water outlet pipe and are respectively located on two sides of the joint of the second water outlet pipe and the first water outlet pipe; and a second metering pump 16 is arranged on the second water outlet pipe and is located between the water outlet end of the aerator 11 and the joint of the second water outlet pipe and the first water outlet pipe. In this structure, the number of times of catalytic oxidation carried out on the waste water is determined according to the content of COD in the waste water. Specifically, when the COD concentration of the waste water is high, the third flow control valve 19 is closed first, the first flow control valve 17, the second flow control valve 18, and the second metering pump are opened, and the waste water subjected to catalytic oxidation treatment for the first time in the catalyst cylinder 10 flows back into the aerator again through the first water outlet pipe and the second water outlet pipe to be subjected to catalytic oxidation treatment for the second time; and then the second flow control valve 18 is closed, and the third flow control valve 19 is opened to discharge the up-to-standard waste water repeatedly subjected to 7
2019100931 19 Aug 2019 catalytic oxidation treatment.
The above embodiments are only illustrative ones used for explaining the technical solutions of the invention, and are not used for limiting the protection scope of the invention. Although the invention is detailed with reference to the above embodiments, those ordinarily skilled in this field would appreciate that any skilled in the art can easily obtain modifications or changes of the technical solutions of the above embodiments, or equivalent replacements of part of the technical features of the technical solutions within the technical scope disclosed by the invention without essentially deviating from the spirit and scope of the technical solutions in the embodiments of the invention, and all these modifications, changes, or the equivalent replacements should also fall within the protection scope of the invention. Therefore, the protection scope of the invention should be subject to the protection scope defined by the claims.

Claims (6)

  1. We Claim:
    1. A system for deep treatment of oily port sewage through advanced oxidation and adsorption, which includes a biological treatment device, an activated carbon adsorption device and an ozone catalytic-oxidation device which are connected sequentially;
    wherein the activated carbon adsorption device includes a closed cylindrical adsorption reactor, and a tray arranged in the closed cylindrical adsorption reactor to divide the internal space of the adsorption reactor into an upper adsorption area filled with activated carbon granules, and a lower water inlet area is fixed to the inner wall of the adsorption reactor and is of a cylindrical porous structure formed by adhesion of a plurality of pieces of gravel; and the adsorption reactor has a bottom provided with a water inlet pipe and a top wall provided with a water outlet pipe, and an air inlet pipe is arranged on the side wall, which is provided with the tray of the adsorption reactor;
    wherein the ozone catalytic-oxidation device includes a cylindrical catalytic reactor having an opening at the bottom, an aerator, a tail gas breaker, an ozone generator, and a water storage tank, wherein; the aerator is arranged at the bottom of the catalytic reactor, and a microporous aeration disk of the aerator is arranged at the opening at the bottom of the catalytic reactor; a catalyst cylinder filled with catalyst is arranged in the middle of the catalytic reactor, and a plurality of overflow holes are uniformly formed in the catalyst cylinder; and a gas overflow pipe connected with the tail gas breaker through a gas supply pipe is arranged at the top of the catalytic reactor; wherein the water storage tank has a water inlet end connected with the water outlet pipe of the adsorption reactor through a pipe and a water outlet end connected with the water inlet pipe of the aerator through a pipe, a first metering pump is arranged on a connecting pipe between the water outlet end of the water storage tank and the water inlet pipe of the aerator; and wherein the gas outlet end of the ozone generator is connected with the air inlet pipe of the aerator through a gas delivery pipe; and a water outlet end is arranged on the side wall of the catalytic reactor located above the catalyst cylinder and is connected with a first water outlet pipe, the water outlet end of the aerator is connected with a second water outlet pipe, the first water outlet pipe has an end communicated with the second water outlet pipe and is provided with a first flow control valve, and a second flow control valve and a third flow control valve are arranged on the second water outlet pipe and are respectively located on two sides of a
    2019100931 19 Aug 2019 joint of the second water outlet pipe and the first water outlet pipe; and a second metering pump is arranged on the second water outlet pipe and is located between the water outlet end of the aerator and the joint of the second water outlet pipe and the first water outlet pipe.
  2. 2. The system for deep treatment of oily port sewage through advanced oxidation and adsorption according to claim 1, wherein the biological treatment device is an A/O bioreactor or a membrane bioreactor.
  3. 3. The system for deep treatment of oily port sewage through advanced oxidation and adsorption according to claim 2, wherein, a sewage tank is arranged between the biological treatment device and the ozone catalytic-oxidation device and has a water inlet end connected with the water outlet end of the biological treatment device through a water delivery pipe and a water outlet end connected with the water inlet pipe of the adsorption reactor through a water delivery pipe, and a third metering pump is arranged on a connecting pipe between the water outlet end of the sewage tank and the water inlet end of the ozone catalytic-oxidation device.
  4. 4. The system for deep treatment of oily port sewage through advanced oxidation and adsorption according to claim 3,wherein, a three-way valve is arranged at an external opening of the water inlet pipe of the adsorption reactor , one of the remaining two ends of the three-way pipe is connected with the water delivery pipe connected to the water outlet end of the sewage tank, the last remaining end of the three-way pipe is connected with a water overflow pipe, and flow control valves are respectively arranged on the water delivery pipe and the water overflow pipe.
  5. 5. The system for deep treatment of oily port sewage through advanced oxidation and adsorption according to claim 4, wherein, an overflow opening is formed in the water outlet pipe of the adsorption reactor and is provided with an on-off valve.
  6. 6. The system for deep treatment of oily port sewage through advanced oxidation and adsorption according to claim 1, the total volume of the activated carbon granules filling the space of the adsorption area of the cylindrical adsorption reactor accounts for 40%-65% of the space volume of the adsorption area.
AU2019100931A 2019-05-10 2019-08-19 System for deep treatment of oily port sewage through advanced oxidation and adsorption Ceased AU2019100931A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201920665029.X 2019-05-10
CN201920665029.XU CN210030329U (en) 2019-05-10 2019-05-10 Advanced oxidation and adsorption coupling advanced treatment system for port oily sewage

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AU2019100931A4 true AU2019100931A4 (en) 2019-09-26

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AU2019100931A Ceased AU2019100931A4 (en) 2019-05-10 2019-08-19 System for deep treatment of oily port sewage through advanced oxidation and adsorption

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AU (1) AU2019100931A4 (en)

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