CN105540850B - Cycle alternation hypoxic/anaerobic/aerobic nitrogen removal phosphorus removing method - Google Patents
Cycle alternation hypoxic/anaerobic/aerobic nitrogen removal phosphorus removing method Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/308—Biological phosphorus removal
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/04—Oxidation reduction potential [ORP]
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/14—NH3-N
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/15—N03-N
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/18—PO4-P
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Abstract
The invention discloses a kind of cycle alternation hypoxic/anaerobic/aerobic nitrogen removal phosphorus removing method, the reaction pond body of cycle alternation water inlet connects into circulation by four reaction tanks and a sedimentation basin.Wherein four reaction tanks share pool wall two-by-two, share and are all provided with porthole on pool wall, its closure is controlled by electric gate, and aerator, agitator, entering water electromagnetic valve, air inlet electromagnetic valve and sludge reflux magnetic valve are designed with each reaction tank.One cycle of operation is made up of four-stage, within a cycle of operation, each reaction tank experienced the change of anoxic-anaerobic-aerobic state, and within an operation phase, sewage all experienced the change of anoxic-anaerobic-aerobic state, therefore this method is changed by each reaction tank hypoxic/anaerobic/aerobic state with the cycle alternation in time and space, is created strict anoxic denitrification, anaerobic phosphorus release, aerobic nitrification and aerobic phosphorus absorption condition, is advantageous to the removal of nitrogen phosphorus in sewage.
Description
Technical field
The present invention is the sewage treatment project technology of field of environment engineering, is especially adapted for use in domestic sewage denitrifying-dephosphorizing
Economical and practical advanced technologies, belong to the technical field of environmental protection.
Background technology
Wastewater treatment in China level is relatively low at present, and Main River Systems lake ammonia nitrogen, total phosphorus are exceeded serious, and eutrophication problem is dashed forward
Go out, immediate offshore area red tide phenomenon happens occasionally.Nitrogen and phosphorus pollution in water body is mainly derived from sanitary sewage and agricultural non-point source pollution,
Wherein sanitary sewage is then the primary pollution source of many water bodys.China《Urban wastewater treatment firm pollutant emission standard》
(GB18918-2002)Considered critical has been done to the nitrogen and phosphorus indexes in sewage effluent.Large size city sewage treatment plant shape at present
Into more ripe denitrification dephosphorization technique, with A2Based on/O techniques, but the Nitrogen/Phosphorus Removal in practical application is not to manage very much
Think and need the sludge and mixed-liquor return of big flow, floor space and power consumption are larger, and maintenance management is complex.
The content of the invention
Technical problem:It is suitable for various treatment scales it is an object of the invention to provide a kind of and has the sewage of denitrogenation dephosphorizing requirement
Biological treatment, cycle alternation hypoxic/anaerobic/aerobic nitrogen removal dephosphorization of contaminant degradation and denitrogenation dephosphorizing requirement can be met simultaneously
Method, the technique can be advantageously implemented the intellectuality of technique in time control with being run under control in real time.
Technical scheme:Cycle alternation hypoxic/anaerobic/aerobic nitrogen removal phosphorus removing method of the present invention, process facility is by with " field "
Four reaction tanks and an independent sedimentation basin composition that font is disposed adjacent, adjacent reaction pond is by sharing the porthole on pool wall
Hydraulic communication, reaction tank are connected with sedimentation basin by pipeline hydraulic, and four reaction tanks are respectively the according to clockwise direction
One reaction tank, the second reaction tank, the 3rd reaction tank and the 4th reaction tank, aerator and agitator are designed with reaction tank.The party
The method of operation of method is periodic duty, and a cycle of operation is divided into the four-stage carried out successively, the first reaction tank in the stage one
For anaerobic condition, the second reaction tank is anaerobic state, and preferably oxygen condition, sewage enter first for the 3rd reaction tank and the 4th reaction tank
Reaction tank and the second reaction tank, the water outlet in the 4th reaction tank flow into sedimentation basin, sludge reflux to the first reaction tank, hereafter three
Water entry, sedimentation basin forebay, the sludge reflux point in stage, and anoxic-anaerobic-aerobic state of each reaction tank are inverse by stage
Clockwise changes, and current are all the time in clockwise.
Further, the four-stage of the cycle of operation is specially:
Stage one:Agitator is opened in first reaction tank and the second reaction tank, and aerator is closed;3rd reaction tank and the 4th
Agitator is closed in reaction tank, and aerator is opened, and sewage enters the first reaction tank and the second reaction tank by 2 water intake modes,
Under waterpower impetus, sewage according to the first reaction tank, the second reaction tank, the 3rd reaction tank, the 4th reaction tank sequential flow
To move, the water outlet inflow sedimentation basin of the 4th reaction tank, after mud-water separation, a part of sludge is back to the first reaction tank from sedimentation basin,
Another part sludge discharge system, sedimentation basin supernatant is as the water discharge after processing;
Stage two:Agitator is opened in 4th reaction tank and the first reaction tank, and aerator is closed;Second reaction tank and the 3rd
Agitator is closed in reaction tank, and aerator is opened, and sewage enters the 4th reaction tank and the first reaction tank by 2 water intake modes,
Under waterpower impetus, sewage according to the 4th reaction tank, the first reaction tank, the second reaction tank, the 3rd reaction tank sequential flow
To move, the water outlet inflow sedimentation basin of the 3rd reaction tank, after mud-water separation, a part of sludge is back to the 4th reaction tank from sedimentation basin,
Another part sludge discharge system, sedimentation basin supernatant is as the water discharge after processing;
Stage three:Agitator is opened in 3rd reaction tank and the 4th reaction tank, and aerator is closed;First reaction tank and second
Agitator is closed in reaction tank, and aerator is opened.Sewage enters the 3rd reaction tank and the 4th reaction tank by 2 water intake modes,
Under waterpower impetus, sewage according to the 3rd reaction tank, the 4th reaction tank, the first reaction tank, the second reaction tank sequential flow
To move, the water outlet inflow sedimentation basin of the second reaction tank, after mud-water separation, a part of sludge is back to the 3rd reaction tank from sedimentation basin,
Another part sludge discharge system, sedimentation basin supernatant is as the water discharge after processing;
Stage four:Agitator is opened in second reaction tank and the 3rd reaction tank, and aerator is closed;4th reaction tank and first
Agitator is closed in reaction tank, and aerator is opened.Sewage enters the second reaction tank and the 3rd reaction tank by 2 water intake modes,
Under waterpower impetus, sewage according to the second reaction tank, the 3rd reaction tank, the 4th reaction tank, the first reaction tank sequential flow
To move, the water outlet inflow sedimentation basin of the first reaction tank, after mud-water separation, a part of sludge is back to the second reaction tank from sedimentation basin,
Another part sludge discharge system, sedimentation basin supernatant is as the water discharge after processing.
In each stage of the inventive method, the first intake pool was the second Aerobic Pond in the upper stage, have accumulated substantial amounts of nitre
State nitrogen, in the case where there is the situation of water-inlet carbon source and returned sludge, into anaerobic condition, denitrification is strong, and efficiency is higher;Second
Intake pool was anoxic pond in the upper stage, and most of nitrate nitrogen is removed by denitrification, and into anaerobic state, while the pond is entered
Water, carbon source is sufficient, beneficial to the progress of anaerobic phosphorus release.During periodic duty, because the second Aerobic Pond of existing operation phase will
As the anoxic pond of next operation phase, mixed liquor enters anaerobic condition by aerobic state, has reached mixed-liquor return effect,
Therefore mixed-liquor return is not provided with the technique, has reached the purpose of energy-conservation.
Each stage running time in present invention process can take time control and with oxidation-reduction potential(ORP)、
Dissolved oxygen(DO), PH, ammonia nitrogen(NH4 +-N), nitrate nitrogen(NO3 --N)And phosphate(PO4 --P)It is the real-time of control variable etc. parameter
The control mode being combined is controlled, beneficial to the intellectuality for realizing technique.
Do not have to special setting mixed-liquor return device in the inventive method, but changed certainly by the alternating of water entry position
It is dynamic to complete mixed-liquor return, save mixed-liquor return equipment and corresponding energy consumption.It is and four reaction tank pond types in this method, big
Small, required equipment is essentially identical, convenient design and management, while four reaction tanks share pool wall, compact-sized, floor space compared with
It is small.
Beneficial effect:Compared with prior art, tool has the advantage that the present invention:
(1)Within a cycle of operation, each reaction tank experienced the change of anoxic-anaerobic-aerobic state, and
Within an operation phase, sewage all experienced the change of anoxic-anaerobic-aerobic state, thus the technique pass through it is each anti-
Answer pond hypoxic/anaerobic/aerobic state to change with the cycle alternation in time and space, create strict anoxic denitrification, anaerobism
Phosphorus, aerobic nitrification and aerobic phosphorus absorption condition are released, effectively increases the efficiency of denitrogenation dephosphorizing;
(2)In the present invention, intake pool in certain stage was Aerobic Pond in the last stage, have accumulated substantial amounts of nitrate nitrogen,
Under the influence of water inlet brings carbon source, the pond rapidly enters anaerobic condition, and denitrification occurs, completes denitrification functions, this
The method of operation is equivalent to having carried out mixed-liquor return, therefore the technique need not specially set mixed-liquor return system, save mixed
Close liquid refluxing unit and corresponding energy consumption;
(3)Based on the special method of operation, the present invention can be run by the stage running time set in advance, also may be used
, can also be by two kinds of methods of operation with by based on being run to the real-time control modes of the parameter onlines such as ORP in reaction tank
Combine.Therefore intellectuality and the long-range to technology controlling and process can be realized using on-line monitoring equipment, meets future development
Requirement;
(4)The pond type of four reaction tanks in the present invention, size, required equipment is essentially identical, convenient design and management, simultaneously
Four reaction tanks share pool wall, and compact-sized, floor space is smaller.
Brief description of the drawings
The present invention is further described below in conjunction with the accompanying drawings.
Fig. 1 is cycle alternation hypoxic/anaerobic/aerobic nitrogen removal dephosphorization process structural representation.Have in figure:1- reacts pond body;
2- the first reaction tank aerators;3- the second reaction tank aerators;The reaction tank aerators of 4- the 3rd;The reaction tank aerators of 5- the 4th;
6- the first reaction tank agitators;7- the second reaction tank agitators;The reaction tank agitators of 8- the 3rd;The reaction tank agitators of 9- the 4th;
10- the first reaction tank electric gates;11- the second reaction tank electric gates;The reaction tank electric gates of 12- the 3rd;The reaction tank electric brakees of 13- the 4th
Door;14- the first reaction tank detectors;15- the second reaction tank detectors;The reaction tank detectors of 16- the 3rd;The reaction tanks of 17- the 4th
Monitor;18- the first reaction tank entering water electromagnetic valves;19- the second reaction tank entering water electromagnetic valves;The reaction tanks of 20- the 3rd water inlet electromagnetism
Valve;The reaction tank entering water electromagnetic valves of 21- the 4th;22- the first reaction tank air inlet electromagnetic valves;23- the second reaction tank air inlet electromagnetic valves;
The reaction tank air inlet electromagnetic valves of 24- the 3rd;The reaction tank air inlet electromagnetic valves of 25- the 4th;26- the first reaction tank sludge reflux magnetic valves;
27- the second reaction tank sludge reflux magnetic valves;The reaction tank sludge reflux magnetic valves of 28- the 3rd;The reaction tank sludge refluxes of 29- the 4th
Magnetic valve;30- the first reaction tank drain solenoid valves;31- the second reaction tank drain solenoid valves;The reaction tank draining electromagnetism of 32- the 3rd
Valve;The reaction tank drain solenoid valves of 33- the 4th;34- water inlet pipes;35- air inlet pipe;36- mud return lines;37- air blowers;38- is dirty
Mud reflux pump;39- water outlets.
Fig. 2 is the periodic duty schematic diagram of cycle alternation hypoxic/anaerobic/aerobic nitrogen removal dephosphorization process.
Embodiment
The specific embodiment with the present invention is described in detail below in conjunction with the accompanying drawings.
Embodiment 1:Referring to Fig. 1, in cycle alternation hypoxic/anaerobic/aerobic nitrogen removal dephosphorization process, reaction pond body 1 is by four
Reaction tank forms, and is respectively designated as the first reaction tank, the second reaction tank, the 3rd reaction tank and the 4th reaction tank, adjacent reaction pond
Pool wall is shared, by porthole hydraulic communication, the closure of porthole is controlled by electric gate, is designed with being aerated in each reaction tank
Device, agitator, entering water electromagnetic valve, air inlet electromagnetic valve and sludge reflux magnetic valve.
Referring to Fig. 2, the method for operation of the technique is periodic duty, and a cycle of operation is divided into four-stage, according to setting
The good stage running time is carried out successively:
Stage one:Sewage enters the first reaction tank and the second reaction tank, and the first reaction tank agitator 6, the second reaction tank stir
Mix device 7 to open, the 3rd reaction tank air inlet electromagnetic valve 24, the 4th reaction tank air inlet electromagnetic valve 25 are opened, the first reaction tank electric gate
10th, the second reaction tank electric gate 11, the 3rd reaction tank electric gate 12 are opened, and the 4th reaction tank draining valve 33 is opened, the first reaction
Pond sludge reflux valve 26 is opened, and the sludge in sedimentation basin is back to the first reaction tank by sludge reflux pump 38;
Stage two:Sewage enters the 4th reaction tank and the first reaction tank, the 4th reaction tank agitator 9, and the first reaction tank stirs
Mix device 6 to open, the second reaction tank air inlet electromagnetic valve 23, the 3rd reaction tank air inlet electromagnetic valve 24 is opened, the 4th reaction tank electric gate
13rd, the first reaction tank electric gate 10, the second reaction tank electric gate 11 are opened, and the 3rd reaction tank draining valve 32 is opened, the 4th reaction
Pond sludge reflux valve 29 is opened, and the sludge in sedimentation basin is back to the 4th reaction tank by sludge reflux pump 38;
Stage three:Sewage enters the 3rd reaction tank and the 4th reaction tank, the 3rd reaction tank agitator 8, and the 4th reaction tank stirs
Mix device 9 to open, the first reaction tank air inlet electromagnetic valve 22, the second reaction tank air inlet electromagnetic valve 23 is opened, the 3rd reaction tank electric gate
12nd, the 4th reaction tank electric gate 13, the first reaction tank electric gate 10 are opened, and the second reaction tank draining valve 31 is opened, the 3rd reaction
Pond sludge reflux valve 28 is opened, and the sludge in sedimentation basin is back to the 3rd reaction tank by sludge reflux pump 38;
Stage four:Sewage enters the second reaction tank and the 3rd reaction tank, the second reaction tank agitator 7, and the 3rd reaction tank stirs
Mix device 8 to open, the 4th reaction tank air inlet electromagnetic valve 25, the first reaction tank air inlet electromagnetic valve 22 is opened, the second reaction tank electric gate
11st, the 3rd reaction tank electric gate 12, the 4th reaction tank electric gate 13 are opened, and the first reaction tank draining valve 30 is opened, the second reaction
Pond sludge reflux valve 27 is opened, and the sludge in sedimentation basin is back to the second reaction tank by sludge reflux pump 38;
In each stage, the first intake pool was the second Aerobic Pond in the upper stage, have accumulated substantial amounts of nitrate nitrogen, was being had into water
Under carbon source and the situation of returned sludge, into anaerobic condition, denitrification is strong, and efficiency is higher;Second intake pool is in upper rank
Section is anoxic pond, and most of nitrate nitrogen is removed by denitrification, and into anaerobic state, while the pond intakes, and carbon source is sufficient,
Beneficial to the progress of anaerobic phosphorus release.During periodic duty, because the second Aerobic Pond of existing operation phase will be used as next operation
The anoxic pond in stage, mixed liquor enter anaerobic condition by aerobic state, have reached mixed-liquor return effect, therefore in the technique
Mixed-liquor return is not provided with, has reached the purpose of energy-conservation.Other cycle alternation water inlet and the conversion of sludge reflux point position, should
Technique is in each stage, and four reaction tanks are spatially always in anoxic, anaerobism, aerobic, aerobic state;Each reaction tank is one
Anoxic, anaerobism, aerobic, aerobic state are experienced in the individual cycle respectively, technique can be made to meet more strict denitrification, release
Phosphorus, nitrification and suction phosphorus condition.
Above-described embodiment is only the preferred embodiment of the present invention, it should be pointed out that:For the ordinary skill of the art
For personnel, under the premise without departing from the principles of the invention, some improvement and equivalent substitution can also be made, these are to the present invention
Claim be improved with the technical scheme after equivalent substitution, each fall within protection scope of the present invention.
Claims (2)
- A kind of 1. cycle alternation hypoxic/anaerobic/aerobic nitrogen removal phosphorus removing method, it is characterised in that the process facility of this method by with Four reaction tanks and an independent sedimentation basin composition that sphere of movements for the elephants shape is disposed adjacent, adjacent reaction pond is by sharing on pool wall Porthole hydraulic communication, reaction tank are connected with sedimentation basin by pipeline hydraulic, and four reaction tanks are according to clockwise direction difference For the first reaction tank, the second reaction tank, the 3rd reaction tank and the 4th reaction tank, aerator and agitator are designed with reaction tank;The method of operation of this method is periodic duty, and a cycle of operation is divided into the four-stage carried out successively, in the stage one One reaction tank is anaerobic condition, and the second reaction tank is anaerobic state, the 3rd reaction tank and the 4th reaction tank preferably oxygen condition, sewage Into the first reaction tank and the second reaction tank, the water outlet in the 4th reaction tank flows into sedimentation basin, sludge reflux to the first reaction tank, Hereafter anoxic-anaerobic-aerobic state of the water entry of three phases, sedimentation basin forebay, sludge reflux point, and each reaction tank Counterclockwise change by stage, current are all the time in clockwise, i.e., first reaction tank, second react in the stage two to four The state in pond, the 3rd reaction tank and the 4th reaction tank is followed successively by " anaerobic-aerobic-aerobic-anoxic ", " aerobic-aerobic-to lack Oxygen-anaerobism " and " aerobic-anoxic-anaerobic-aerobic ".
- 2. cycle alternation hypoxic/anaerobic/aerobic nitrogen removal phosphorus removing method according to claim 1, it is characterised in that the fortune The four-stage in row cycle is specially:Stage one:Agitator is opened in first reaction tank and the second reaction tank, and aerator is closed;3rd reaction tank and the 4th reaction Agitator is closed in pond, and aerator is opened, and sewage enters the first reaction tank and the second reaction tank by 2 water intake modes, in water Under power impetus, sewage according to the first reaction tank, the second reaction tank, the 3rd reaction tank, the 4th reaction tank sequential flowing, The water outlets of four reaction tanks flows into sedimentation basin, and after mud-water separation, a part of sludge is back to the first reaction tank, another portion from sedimentation basin Divide sludge discharge system, sedimentation basin supernatant is as the water discharge after processing;Stage two:Agitator is opened in 4th reaction tank and the first reaction tank, and aerator is closed;Second reaction tank and the 3rd reaction Agitator is closed in pond, and aerator is opened, and sewage enters the 4th reaction tank and the first reaction tank by 2 water intake modes, in water Under power impetus, sewage according to the 4th reaction tank, the first reaction tank, the second reaction tank, the 3rd reaction tank sequential flowing, The water outlets of three reaction tanks flows into sedimentation basin, and after mud-water separation, a part of sludge is back to the 4th reaction tank, another portion from sedimentation basin Divide sludge discharge system, sedimentation basin supernatant is as the water discharge after processing;Stage three:Agitator is opened in 3rd reaction tank and the 4th reaction tank, and aerator is closed;First reaction tank and the second reaction Agitator is closed in pond, and aerator is opened, and sewage enters the 3rd reaction tank and the 4th reaction tank by 2 water intake modes, in water Under power impetus, sewage according to the 3rd reaction tank, the 4th reaction tank, the first reaction tank, the second reaction tank sequential flowing, The water outlets of two reaction tanks flows into sedimentation basin, and after mud-water separation, a part of sludge is back to the 3rd reaction tank, another portion from sedimentation basin Divide sludge discharge system, sedimentation basin supernatant is as the water discharge after processing;Stage four:Agitator is opened in second reaction tank and the 3rd reaction tank, and aerator is closed;4th reaction tank and the first reaction Agitator is closed in pond, and aerator is opened, and sewage enters the second reaction tank and the 3rd reaction tank by 2 water intake modes, in water Under power impetus, sewage according to the second reaction tank, the 3rd reaction tank, the 4th reaction tank, the first reaction tank sequential flowing, The water outlet of one reaction tank flows into sedimentation basin, and after mud-water separation, a part of sludge is back to the second reaction tank, another portion from sedimentation basin Divide sludge discharge system, sedimentation basin supernatant is as the water discharge after processing.
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CN106608677A (en) * | 2016-12-09 | 2017-05-03 | 广东首汇蓝天工程科技有限公司 | Sewage treatment system and treatment process thereof |
CN109775931B (en) * | 2019-02-26 | 2023-12-19 | 浙江德安科技股份有限公司 | Sewage treatment plant standard lifting transformation system and process |
CN113292195A (en) * | 2020-09-25 | 2021-08-24 | 重庆化工职业学院 | AnOnSewage treatment equipment |
CN116621331A (en) * | 2023-04-24 | 2023-08-22 | 山东源广环保科技有限公司 | Integrated sewage treatment method |
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