CN113830888A

CN113830888A - Sewage treatment system and method

Info

Publication number: CN113830888A
Application number: CN202111225283.6A
Authority: CN
Inventors: 李龙才
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2021-12-24

Abstract

The invention provides a sewage treatment system and a method, comprising the following steps: the sewage treatment system comprises a sewage tank, a BOD monitor and a control unit, wherein the sewage tank is used for containing sewage, a first aerobic tank, a second aerobic tank and a third aerobic tank are arranged on one side of the sewage tank side by side, the sewage tank is respectively communicated with the first aerobic tank, the second aerobic tank and the third aerobic tank, and the BOD monitor is used for detecting BOD information of the sewage in the three aerobic tanks in real time; the control unit comprises a processing module, an acquisition module and a control module, wherein the acquisition module is used for acquiring data, the processing module is used for outputting a control instruction according to the data acquired by the acquisition module, and the control module is used for executing the control instruction output by the processing module. Carry out multistage sewage treatment through a plurality of good oxygen ponds that set up, can greatly improve the treatment effect of sewage to control through the control unit intelligence that sets up, can further improve the accuracy of control process and control result, not only improved work efficiency, still reduced artificial input.

Description

Sewage treatment system and method

Technical Field

The invention relates to the technical field of intelligent sewage treatment, in particular to a sewage treatment system and method.

Background

At present, the combined urban pipeline sewage has severe organic matter degradation and denitrification pressure due to the complex water quality of a nano pipe; in addition, the inflow of part of industrial wastewater (industrial wastewater treatment liquid) also brings large-range fluctuation of the quality and quantity of the sewage, impacts a biochemical treatment system and influences the stability of sewage treatment; the problems aggravate the difficulty of standard treatment of the urban sewage plant, destroy the ecological balance of the receiving water body and cause the rapid deterioration of the surrounding environment.

In the sewage treatment process, the aerobic tank has the function of enabling the activated sludge to perform aerobic respiration, further decomposing organic matters into inorganic matters and removing pollutants, and the optimal operation is to control the oxygen content and other required conditions of microorganisms, so that the microorganisms can perform aerobic respiration with the maximum benefit; the anaerobic treatment is to remove organic matters in the wastewater by using the action of anaerobic bacteria, the time is usually long, and the anaerobic process can be divided into a hydrolysis stage, an acidification stage and a methanation stage; the anoxic pond is a biochemical system with dissolved oxygen controlled between 0.2-0.5mg/l in terms of relative anaerobic and aerobic; when a large amount of nitrate, nitrite and sufficient organic matters exist, denitrification can be carried out in the pool (area); the deterioration of ecological environment is mainly caused by unreasonable development and utilization of water resources. The main reasons for the water crisis are: on one hand, the shortage and unreasonable utilization of water resources coexist, and on the other hand, the water quality eutrophication of rivers, lakes, reservoirs and offshore water areas is increasingly serious due to the insufficient sewage treatment capacity. The shortage of water resources and pollution are important factors which restrict the sustainable development of economy and society at present. Sewage treatment has received widespread human attention as a basic measure for pollution control.

Meanwhile, the most common method for treating urban sewage by adopting an activated sludge method and a biofilm method is currently applied. The activated sludge treatment system degrades organic molecules through adsorption-biological oxidation of a large amount of zoogloea and free microorganisms, and realizes the denitrification treatment of wastewater through nitrification-denitrification; however, the activated sludge process is greatly affected by water quality fluctuation and generally occupies a large area. The biomembrane method can reduce the volume of equipment and reduce the water inlet impact because of generating a higher-density biomembrane; but under the same reaction time, the organic matter removal rate (70-90%) is difficult to achieve the treatment effect of the activated sludge process (the organic matter removal rate of the activated sludge process is 90-98%). From the final effluent, the biomembrane method is superior to the activated sludge method because the microbial population is rich and the BOD of the optimal effluent can reach 10 mg/L.

As a novel biomembrane sewage treatment technology, the moving bed biomembrane method can convey the biomembrane to a full reactor due to the stability and density characteristics (usually 0.95-0.98g/cm3) of the carrier, increase the contact probability of the biomembrane, oxygen and reaction substrates, and has greater application prospect compared with other biomembrane methods. How to effectively combine the activated sludge with the moving bed biological membrane to be applied to solve the problem that the improvement of the sewage treatment efficiency of the aerobic tank is urgently needed to be solved.

Disclosure of Invention

In view of this, the present invention provides a sewage treatment system and method, which aims to solve the problem of how to combine activated sludge with a moving bed biofilm to improve the sewage treatment efficiency of an aerobic tank.

In one aspect, the present invention provides a wastewater treatment system comprising: the sewage treatment system comprises a sewage tank, a BOD monitor and a control unit, wherein the sewage tank is used for containing sewage, a first aerobic tank, a second aerobic tank and a third aerobic tank are arranged on one side of the sewage tank side by side, the sewage tank is respectively communicated with the first aerobic tank, the second aerobic tank and the third aerobic tank, and the BOD monitor is used for detecting BOD information of the sewage in the three aerobic tanks in real time;

the device comprises a first aerobic tank, a second aerobic tank, a third aerobic tank, an activated sludge feeding unit and a biomembrane filler feeding unit, wherein the first aerobic tank is internally provided with a first surface aerator, a first image acquisition unit and a first heater, the second aerobic tank is internally provided with a second surface aerator, a second image acquisition unit and a second heater, the third aerobic tank is internally provided with a third surface aerator, a third image acquisition unit and a third heater, the activated sludge feeding unit and the biomembrane filler feeding unit are arranged above the three aerobic tanks, the activated sludge feeding unit is used for respectively adding activated sludge into the three aerobic tanks, and the biomembrane filler feeding unit is used for respectively adding biomembrane filler into the three aerobic tanks;

a turbidity monitor is arranged on one side of the sewage tank to detect sewage turbidity information in the sewage tank;

the control unit is respectively and electrically connected with the three surface aerator, the three heaters, the three image acquisition units, the BOD monitor, the turbidity monitor, the activated sludge feeding unit and the biomembrane filler feeding unit so as to control and acquire data;

the control unit comprises a processing module, an acquisition module and a control module, wherein the acquisition module is used for acquiring data, the processing module is used for outputting a control instruction according to the data acquired by the acquisition module, and the control module is used for executing the control instruction output by the processing module; wherein,

the processing module is also used for acquiring the current real-time sewage turbidity delta D in the sewage tank measured by the turbidity monitor through the acquisition module after sewage is injected into the sewage tank, setting the opening states of the three aerobic tanks according to the real-time sewage turbidity delta D, and conveying the sewage into the aerobic tank in the opening state after the opening states of the three aerobic tanks are determined;

the treatment module is also used for determining the opening states of the three aerobic tanks, collecting sewage image information in the aerobic tanks through the image collection units in the open aerobic tanks after conveying the sewage into the open aerobic tanks, acquiring real-time gray value delta S of the sewage from the image information, setting the heating temperature of the sewage in the open aerobic tanks according to the real-time sewage turbidity delta D, and simultaneously setting the addition amounts of activated sludge and biofilm fillers in the open aerobic tanks according to the real-time gray value delta S;

the treatment module is also used for setting the aeration time length when the surface aerator in the open-state aerobic tank aerates the sewage in the open-state aerobic tank after adding activated sludge and biofilm filler to the sewage in the open-state aerobic tank, and after the aeration is finished, determining the BOD value of the sewage in the open-state aerobic tank through the BOD monitor to obtain the BOD value E1 after the first aeration of the sewage in the open-state aerobic tank at the moment, and comparing the BOD value E1 after the first aeration with the preset standard BOD value Ea:

when E1 is less than Ea, outputting the aerated sewage in the aerobic tank in the open state and then carrying out the next step;

and when the E1 is more than or equal to Ea, adjusting the opening state of the current aerobic tank according to the BOD value E1 after the first aeration, and outputting the sewage after the second aeration.

Further, the processing module is further configured to set a first preset turbidity D1, a second preset turbidity D2, a third preset turbidity D3 and a fourth preset turbidity D4, wherein D1 < D2 < D3 < D4;

the treatment module is used for determining the opening states of the three aerobic tanks according to the relation between the real-time sewage turbidity delta D in the sewage tank and each preset turbidity:

when the delta D is less than D1, only the first aerobic tank is opened;

when D1 is more than or equal to and delta D is less than D2, only the second aerobic tank is started;

when D2 is not less than or equal to and delta D is less than D3, the first aerobic tank and the second aerobic tank are opened simultaneously;

when D3 is not less than or equal to and delta D is less than D4, the first aerobic tank, the second aerobic tank and the third aerobic tank are started simultaneously.

Further, the processing module is further configured to set a first preset preheating temperature H1, a second preset preheating temperature H2, a third preset preheating temperature H3, and a fourth preset preheating temperature H4, where H1 < H2 < H3 < H4;

the treatment module is also used for setting the heating temperature of the sewage in the aerobic tank in an opening state according to the relation between the real-time sewage turbidity delta D of the sewage in the sewage tank and each preset turbidity:

when the delta D is less than D1, selecting the first preset preheating temperature H1 as the preheating temperature of the sewage in the aerobic tank in the opening state;

when D1 is more than or equal to and delta D is less than D2, selecting the second preset preheating temperature H2 as the preheating temperature of the sewage in the aerobic tank in the opening state;

when D2 is more than or equal to and delta D is less than D3, selecting the third preset preheating temperature H3 as the preheating temperature of the sewage in the aerobic tank in the opening state;

when D3 is more than or equal to and delta D is less than D4, selecting the fourth preset preheating temperature H4 as the preheating temperature of the sewage in the aerobic tank in the opening state;

the treatment module is further configured to, after the ith preset preheating temperature Hi is selected as the preheating temperature of the sewage in the open-state aerobic tank, if i is 1,2,3,4, heat the sewage in the open-state aerobic tank to the ith preset preheating temperature Hi by the heater in the aerobic tank.

Further, the processing module is further configured to set a first preset gray-level value S1, a second preset gray-level value S2, a third preset gray-level value S3 and a fourth preset gray-level value S4, wherein S1 is less than S2 is less than S3 is less than S4; the treatment module is also used for setting a first preset activated sludge addition amount X1, a second preset activated sludge addition amount X2, a third preset activated sludge addition amount X3 and a fourth preset activated sludge addition amount X4, wherein X1 is more than X2 and more than X3 is more than X4; the processing module is further used for setting a first preset biofilm filler addition amount Y1, a second preset biofilm filler addition amount Y2, a third preset biofilm filler addition amount Y3 and a fourth preset biofilm filler addition amount Y4, wherein Y1 is more than Y2 and more than Y3 and more than Y4;

the processing module is further configured to, when the addition amounts of the activated sludge and the biofilm fillers in the aerobic tank in the open state are set according to the real-time gray value Δ S, set the addition amounts of the activated sludge and the biofilm fillers in the aerobic tank in the open state according to a relationship between the real-time gray value Δ S and each preset gray value:

when E0 is less than E01, respectively selecting the first preset activated sludge addition amount X1 and the first preset biofilm filler addition amount Y1 as the addition amounts of activated sludge and biofilm filler in the aerobic tank in an open state;

when the E01 is not less than E0 and is less than E02, respectively selecting the second preset activated sludge addition amount X2 and the second preset biofilm filler addition amount Y2 as the addition amounts of the activated sludge and the biofilm filler in the aerobic tank in the opening state;

when E02 is not less than E0 and less than E03, respectively selecting the third preset activated sludge addition amount X3 and the third preset biofilm filler addition amount Y3 as the addition amounts of the activated sludge and the biofilm filler in the aerobic tank in the opening state;

and when the E03 is not less than E0 and not more than E04, respectively selecting the fourth preset activated sludge addition amount X4 and the fourth preset biofilm filler addition amount Y4 as the addition amounts of the activated sludge and the biofilm filler in the aerobic tank in the open state.

Further, the processing module is further configured to, after acquiring real-time image information of sewage in the aerobic tank in the open state, intercept a rectangular image frame from the real-time image information and perform gray processing when acquiring a real-time gray value Δ S of the sewage, divide the rectangular image frame into m × m rectangular regions having the same size, where m is an odd number greater than 0, acquire a gray value of each rectangular region, sum the gray values of all the rectangular regions, and acquire an average gray value as the real-time gray value Δ S of the sewage;

the processing module is further used for setting a first preset correction coefficient y1, a second preset correction coefficient y2, a third preset correction coefficient y3 and a fourth preset correction coefficient y4, wherein y1 is more than 1 and y2 is more than y3 is more than y4 and less than 1.5;

the processing module is further used for selecting a correction coefficient according to the relation between the real-time gray value delta S and each preset gray value so as to correct the ith preset activated sludge addition amount Xi of the activated sludge addition amount in the aerobic tank in the opening state:

when the delta S is less than or equal to S1, selecting the first preset correction coefficient y1 to correct the ith preset activated sludge addition amount Xi, and taking the corrected activated sludge addition amount Xi y1 as the activated sludge addition amount in the aerobic tank in an open state;

when the delta S is more than S1 and less than or equal to S2, selecting the second preset correction coefficient y2 to correct the i-th preset activated sludge addition amount Xi, and taking the corrected activated sludge addition amount Xi y2 as the activated sludge addition amount in the aerobic tank in the opening state;

when the delta S is more than S2 and less than or equal to S3, selecting the third preset correction coefficient y3 to correct the i-th preset activated sludge addition amount Xi, and taking the corrected activated sludge addition amount Xi y3 as the activated sludge addition amount in the aerobic tank in the opening state;

and when the S3 is larger than the Delta S and is not more than S4, selecting the fourth preset correction coefficient y4 to correct the ith preset activated sludge addition amount Xi, and taking the corrected activated sludge addition amount Xi y4 as the activated sludge addition amount in the aerobic tank in the opening state.

Further, the processing module is further configured to, after dividing the rectangular image frame into m × m rectangular regions with the same size, perform difference calculation on the gray values of the rectangular regions located at four corners in the rectangular image frame and the gray value of the rectangular region located at the center of the rectangular image frame respectively, and perform average value calculation on the four difference values to obtain an average gray difference value Ua between the rectangular region located at a corner and the rectangular region located at the center in the rectangular image frame;

the processing module is further configured to set a first preset average gray scale difference value Ua1, a second preset average gray scale difference value Ua2, a third preset average gray scale difference value Ua3 and a fourth preset average gray scale difference value Ua4, where Ua1 < Ua2 < Ua3 < Ua 4; the processing module is further used for setting a first preset compensation coefficient x1, a second preset compensation coefficient x2, a third preset compensation coefficient x3 and a fourth preset compensation coefficient x4, wherein x1 is more than 1 and x2 is more than x3 and more than x4 is less than 1.5;

the processing module is further configured to, after the i-th preset biofilm filler addition amount Yi is selected as the addition amount of the biofilm filler added into the aerobic tank in the open state, select i to be 1,2,3,4, and select a compensation coefficient according to a relationship between the average gray scale difference Ua and each preset average gray scale difference, so as to compensate the selected i-th preset biofilm filler addition amount Yi:

when Ua is less than Ua1, the i-th preset biofilm filler addition amount Yi is not compensated;

when Ua1 is not less than Ua < Ua2, selecting the first preset compensation coefficient x1 to compensate the i-th preset biofilm filler addition amount Yi, wherein the compensated biofilm filler addition amount is Yi x 1;

when Ua2 is not less than Ua < Ua3, selecting the second preset compensation coefficient x2 to compensate the i-th preset biofilm filler addition amount Yi, wherein the compensated biofilm filler addition amount is Yi x 2;

when Ua3 is not less than Ua < Ua4, selecting the third preset compensation coefficient x3 to compensate the i-th preset biofilm filler addition amount Yi, wherein the compensated biofilm filler addition amount is Yi x 3;

and when Ua4 is not more than Ua, selecting the fourth preset compensation coefficient x4 to compensate the selected i-th preset biofilm filler addition amount Yi, wherein the compensated biofilm filler addition amount is Yi x 4.

Further, the processing module is further configured to set a first preset temperature adjustment coefficient v1, a second preset temperature adjustment coefficient v2, a third preset temperature adjustment coefficient v3, and a fourth preset temperature adjustment coefficient v4, where v1 is greater than 1 and v2 is greater than v3 is greater than v4 is less than 1.5;

the processing module is further configured to select a temperature adjustment coefficient according to a relationship between the average gray scale difference Ua and each preset average gray scale difference after selecting the ith preset preheating temperature Hi as the preheating temperature of the sewage in the open-state aerobic tank, to adjust the selected ith preset preheating temperature Hi, and to use the adjusted temperature as the preheating temperature of the sewage in the open-state aerobic tank:

when Ua is less than Ua1, selecting the first preset temperature adjusting coefficient v1 to adjust Hi, and taking the adjusted temperature Hi x v1 as the preheating temperature of the sewage in the aerobic tank in the starting state;

when Ua1 is not less than Ua < Ua2, selecting the second preset temperature adjusting coefficient v2 to adjust Hi, and taking the adjusted temperature Hi x v2 as the preheating temperature of the sewage in the aerobic tank in the starting state;

when Ua2 is not less than Ua < Ua3, selecting the third preset temperature adjusting coefficient v3 to adjust Hi, and taking the adjusted temperature Hi x v3 as the preheating temperature of the sewage in the aerobic tank in the starting state;

when Ua3 is not less than Ua < Ua4, selecting the fourth preset temperature adjusting coefficient v4 to adjust Hi, and taking the adjusted temperature Hi x v4 as the preheating temperature of the sewage in the aerobic tank in the starting state.

Compared with the prior art, the invention has the beneficial effects that the sewage treatment device is provided with the sewage tank, the BOD monitor and the control unit, the first aerobic tank, the second aerobic tank and the third aerobic tank are arranged on one side of the sewage tank side by side, the activated sludge feeding unit and the biomembrane filler feeding unit are arranged above the three aerobic tanks, so that activated sludge and biomembrane filler are added into the aerobic tanks to carry out aeration treatment on sewage in the aerobic tanks, the treatment effect and the treatment speed of the sewage can be greatly improved by combining the activated sludge and the biomembrane filler and the combined action of the activated sludge and the biomembrane filler, the treatment on the sewage in the aerobic tanks can be simultaneously carried out, the treatment efficiency and the treatment effect of the sewage in the aerobic tanks can be greatly improved, the construction cost is saved, and the environment is also greatly protected.

Furthermore, the multistage sewage treatment process is carried out through the plurality of aerobic tanks, the sewage treatment effect can be greatly improved, the control unit is intelligently controlled, the accuracy of the control process and the control result can be further improved, the working efficiency is improved, and the manual investment is reduced.

On the other hand, the invention also provides a sewage treatment method implemented by adopting the sewage treatment system, which comprises the following steps:

after sewage is injected into the sewage tank, acquiring the real-time sewage turbidity delta D in the current sewage tank, setting the opening states of the three aerobic tanks according to the real-time sewage turbidity delta D, and conveying the sewage into the aerobic tanks in the opening states after the opening states of the three aerobic tanks are determined;

determining the opening states of the three aerobic tanks, conveying sewage into the aerobic tanks in the opening states, acquiring sewage image information in the aerobic tanks through image acquisition units in the aerobic tanks in the opening states, acquiring real-time gray value delta S of the sewage from the image information, setting the heating temperature of the sewage in the aerobic tanks in the opening states according to the real-time sewage turbidity delta D, and simultaneously setting the addition amounts of activated sludge and biofilm fillers in the aerobic tanks in the opening states according to the real-time gray value delta S;

after activated sludge and biofilm fillers are added into sewage in the open-state aerobic tank, setting aeration time length when a surface aerator in the open-state aerobic tank aerates the sewage in the open-state aerobic tank, measuring a BOD value of the sewage in the open-state aerobic tank after aeration is finished, so as to obtain a BOD value E1 after primary aeration of the sewage in the open-state aerobic tank, and comparing the BOD value E1 after primary aeration with a preset standard BOD value Ea:

when E1 is more than or equal to Ea, adjusting the opening state of the current aerobic tank according to the BOD value E1 after the first aeration, and outputting the sewage after the second aeration.

Further, setting a first preset turbidity D1, a second preset turbidity D2, a third preset turbidity D3 and a fourth preset turbidity D4, wherein D1 is more than D2 and more than D3 is more than D4, and determining the opening states of the three aerobic tanks according to the relation between the real-time sewage turbidity delta D in the sewage tank and the preset turbidities:

when the delta D is less than D1, only the first aerobic tank is started;

when D2 is not more than or equal to and delta D is less than D3, the first aerobic tank and the second aerobic tank are opened simultaneously;

Further, setting a first preset preheating temperature H1, a second preset preheating temperature H2, a third preset preheating temperature H3 and a fourth preset preheating temperature H4, wherein H1 is more than H2 and more than H3 is more than H4, and setting the heating temperature of the sewage in the aerobic tank in an open state according to the relation between the real-time sewage turbidity Delta D of the sewage in the sewage tank and each preset turbidity:

when the delta D is less than D1, selecting a first preset preheating temperature H1 as the preheating temperature of the sewage in the aerobic tank in the opening state;

when D1 is more than or equal to and delta D is more than or equal to D2, selecting a second preset preheating temperature H2 as the preheating temperature of the sewage in the aerobic tank in the opening state;

when D2 is more than or equal to and delta D is more than or equal to D3, selecting a third preset preheating temperature H3 as the preheating temperature of the sewage in the aerobic tank in the opening state;

when D3 is more than or equal to and delta D is less than D4, selecting a fourth preset preheating temperature H4 as the preheating temperature of the sewage in the aerobic tank in the opening state;

the treatment module is also used for selecting the ith preset preheating temperature Hi as the preheating temperature of the sewage in the aerobic tank in the starting state, and heating the sewage in the aerobic tank in the starting state to the ith preset preheating temperature Hi by the heater in the aerobic tank, wherein i is 1,2,3 and 4.

It is understood that the method and the system have the same advantages and are not described in detail herein.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

FIG. 1 is a schematic structural diagram of a sewage treatment system according to an embodiment of the present invention;

FIG. 2 is a functional block diagram of a wastewater treatment system according to an embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1 and 2, this implementation provides a sewage treatment system, including effluent water sump 1, BOD monitor 7 and control unit 11, effluent water sump 1 is used for holding sewage, one side of effluent water sump 1 is provided with first good oxygen pond 2, second good oxygen pond 3 and third good oxygen pond 4 side by side, effluent water sump 1 respectively with first good oxygen pond 2, second good oxygen pond 3 and third good oxygen pond 4 intercommunication, BOD monitor 7 is used for real-time detection three the BOD information of sewage in the good oxygen pond.

Specifically, be provided with first surface in the first aerobic tank 2 and expose machine 21, first image acquisition unit 8 and first heater 22, be provided with second surface in the second aerobic tank 3 and expose machine 31, second image acquisition unit 9 and second heater 32, be provided with third surface in the third aerobic tank 4 and expose machine 41, third image acquisition unit 10 and third heater 42, it is three the top in aerobic tank is provided with reinforced unit 5 of activated sludge and biofilm filler reinforced unit 6, reinforced unit 5 of activated sludge is used for respectively to the threely add activated sludge in the aerobic tank, biofilm filler reinforced unit 6 is used for respectively to threely add biofilm filler in the aerobic tank.

Specifically, a turbidity monitor is arranged on one side of the sewage tank 1 to detect sewage turbidity information in the sewage tank 1; the control unit 11 is respectively and electrically connected with the three surface aerator, the three heater, the three image acquisition units, the BOD monitor 7, the turbidity monitor, the activated sludge feeding unit 5 and the biomembrane filler feeding unit 6 so as to control and acquire data.

Specifically, the control unit 11 includes a processing module, an acquisition module and a control module, the acquisition module is used for acquiring data, the processing module is used for outputting a control instruction according to the data acquired by the acquisition module, and the control module is used for executing the control instruction output by the processing module.

Particularly, the processing module is still used for after pouring into sewage in the sewage pond, through collection module gathers turbidity monitor survey is present the real-time sewage turbidity delta D in the sewage pond, and according to real-time sewage turbidity delta D sets for threely the open mode of good oxygen pond, and after three open mode of good oxygen pond is confirmed, carry sewage to the good oxygen pond that is in open mode.

Specifically, the processing module is further configured to determine the opening states of the three aerobic tanks, collect image information of sewage in the aerobic tanks through the image collection unit in the open aerobic tanks after the sewage is conveyed into the open aerobic tanks, acquire real-time gray values Δ S of the sewage from the image information, set the heating temperature of the sewage in the open aerobic tanks according to the real-time sewage turbidity Δ D, and set the addition amounts of activated sludge and biofilm fillers in the open aerobic tanks according to the real-time gray values Δ S.

Specifically, the treatment module is further configured to set an aeration time length when the surface aerator in the open-state aerobic tank aerates the sewage inside the open-state aerobic tank after adding activated sludge and biofilm fillers to the sewage in the open-state aerobic tank, and after aeration is completed, determine a BOD value of the sewage in the open-state aerobic tank by the BOD monitor to obtain a BOD value E1 after first aeration of the sewage in the open-state aerobic tank at this time, and compare the BOD value E1 after first aeration with a preset standard BOD value Ea:

It can be seen that, the above embodiment is through setting up the effluent water sump, BOD monitor and control unit, one side of effluent water sump is provided with first good oxygen pond side by side, second good oxygen pond and third good oxygen pond, and set up reinforced unit of active sludge and biofilm filler in the top of three good oxygen ponds, in order to add active sludge and biofilm filler in the good oxygen pond with the sewage in the good oxygen pond aeration treatment, thereby through the combination of active sludge and biofilm filler, and its combined action, in order to handle the sewage in the good oxygen pond, can greatly improve the treatment effect of sewage and the treatment rate of sewage, use through the cooperation of a plurality of good oxygen ponds simultaneously, can greatly improve the treatment effeciency and the treatment effect in the good oxygen pond, not only practice thrift construction cost, still greatly protected the environment.

Specifically, the processing module is further configured to set a first preset turbidity D1, a second preset turbidity D2, a third preset turbidity D3 and a fourth preset turbidity D4, wherein D1 < D2 < D3 < D4;

when the delta D is less than D1, only the first aerobic tank is opened;

Specifically, the processing module is further configured to set a first preset preheating temperature H1, a second preset preheating temperature H2, a third preset preheating temperature H3 and a fourth preset preheating temperature H4, wherein H1 < H2 < H3 < H4;

Specifically, the processing module is further configured to set a first preset grayscale value S1, a second preset grayscale value S2, a third preset grayscale value S3, and a fourth preset grayscale value S4, where S1 < S2 < S3 < S4; the treatment module is also used for setting a first preset activated sludge addition amount X1, a second preset activated sludge addition amount X2, a third preset activated sludge addition amount X3 and a fourth preset activated sludge addition amount X4, wherein X1 is more than X2 and more than X3 is more than X4; the processing module is further used for setting a first preset biofilm filler addition amount Y1, a second preset biofilm filler addition amount Y2, a third preset biofilm filler addition amount Y3 and a fourth preset biofilm filler addition amount Y4, wherein Y1 is more than Y2 and more than Y3 and more than Y4;

Specifically, the processing module is further configured to, after acquiring real-time image information of sewage in the aerobic tank in an open state, intercept a rectangular image frame from the real-time image information and perform gray processing when acquiring a real-time gray value Δ S of the sewage, divide the rectangular image frame into m × m rectangular regions with the same size, where m is an odd number greater than 0, acquire a gray value of each rectangular region, sum up gray values of all the rectangular regions, and acquire an average gray value as the real-time gray value Δ S of the wastewater;

Specifically, the processing module is further configured to, after dividing the rectangular image frame into m × m rectangular regions with the same size, perform difference calculation on the gray values of the rectangular regions located at four corners in the rectangular image frame and the gray value of the rectangular region located at the center of the rectangular image frame, and perform average value calculation on the four difference values to obtain an average gray difference value Ua between the rectangular region located at the corner and the rectangular region located at the center in the rectangular image frame;

Specifically, the processing module is further configured to set a first preset temperature adjustment coefficient v1, a second preset temperature adjustment coefficient v2, a third preset temperature adjustment coefficient v3 and a fourth preset temperature adjustment coefficient v4, wherein 1 < v1 < v2 < v3 < v4 < 1.5;

It can be seen that, through setting up the effluent water sump, BOD monitor and the control unit, one side of effluent water sump is provided with first good oxygen pond side by side, second good oxygen pond and third good oxygen pond, and set up reinforced unit of active sludge and biomembrane filler in the top of three good oxygen pond, in order to add active sludge and biomembrane filler in the good oxygen pond in order to carry out aeration treatment to the sewage in the good oxygen pond, thereby combine through active sludge and biomembrane filler, and its combined action, in order to handle the sewage in the good oxygen pond, can greatly improve the treatment effect of sewage and the processing speed of sewage, use through the cooperation of a plurality of good oxygen ponds simultaneously, can greatly improve the treatment effeciency and the treatment effect of sewage in the good oxygen pond, not only practice thrift construction cost, still greatly protected the environment.

In another preferred embodiment based on the above examples, the present embodiment provides a wastewater treatment method, which is implemented by using the wastewater treatment system in the above examples, and comprises:

Specifically, a first preset turbidity D1, a second preset turbidity D2, a third preset turbidity D3 and a fourth preset turbidity D4 are set, D1 is more than D2 and more than D3 is more than D4, and the opening states of the three aerobic tanks are determined according to the relation between the real-time sewage turbidity delta D in the sewage tank and the preset turbidities:

when the delta D is less than D1, only the first aerobic tank is started;

Specifically, a first preset preheating temperature H1, a second preset preheating temperature H2, a third preset preheating temperature H3 and a fourth preset preheating temperature H4 are set, H1 is more than H2 and more than H3 and more than H4, and the heating temperature of the sewage in the aerobic tank in an open state is set according to the relation between the real-time sewage turbidity Delta D of the sewage in the sewage tank and each preset turbidity:

Specifically, a first preset gray value S1, a second preset gray value S2, a third preset gray value S3 and a fourth preset gray value S4 are set through the processing module, and S1 < S2 < S3 < S4; setting a first preset activated sludge addition amount X1, a second preset activated sludge addition amount X2, a third preset activated sludge addition amount X3 and a fourth preset activated sludge addition amount X4 through the processing module, wherein X1 is more than X2 and more than X3 and more than X4; setting a first preset biofilm filler adding amount Y1, a second preset biofilm filler adding amount Y2, a third preset biofilm filler adding amount Y3 and a fourth preset biofilm filler adding amount Y4 through the processing module, wherein Y1 is more than Y2 and more than Y3 and more than Y4;

when the addition amounts of the activated sludge and the biofilm fillers in the aerobic tank in the opening state are set according to the real-time gray value delta S, the addition amounts of the activated sludge and the biofilm fillers in the aerobic tank in the opening state are set according to the relationship between the real-time gray value delta S and each preset gray value:

Specifically, after acquiring real-time image information of sewage in an open-state aerobic tank, when acquiring a real-time gray value Δ S of the sewage, capturing a rectangular image frame from the real-time image information and performing gray processing, dividing the rectangular image frame into m × m rectangular regions with the same size, wherein m is an odd number greater than 0, acquiring a gray value of each rectangular region, summing the gray values of all the rectangular regions, and acquiring an average gray value as the real-time gray value Δ S of the sewage;

a first preset correction coefficient y1, a second preset correction coefficient y2, a third preset correction coefficient y3 and a fourth preset correction coefficient y4 are also set through the processing module, and y1 is more than 1 and less than y2 and less than y3 and less than y4 and less than 1.5;

selecting a correction coefficient according to the relation between the real-time gray value delta S and each preset gray value through the processing module so as to correct the ith preset activated sludge addition amount Xi of the activated sludge addition amount in the aerobic tank in the opening state:

Specifically, after the rectangular image frame is divided into m × m rectangular regions with the same size, difference calculation is performed on the gray values of the rectangular regions located at four corners in the rectangular image frame and the gray value of the rectangular region located at the center of the rectangular image frame, and average calculation is performed on the four difference values to obtain an average gray difference value Ua between the rectangular region located at the corner and the rectangular region located at the center in the rectangular image frame;

setting a first preset average gray difference value Ua1, a second preset average gray difference value Ua2, a third preset average gray difference value Ua3 and a fourth preset average gray difference value Ua4 through the processing module, wherein Ua1 is more than Ua2 and more than Ua3 and more than Ua 4; setting a first preset compensation coefficient x1, a second preset compensation coefficient x2, a third preset compensation coefficient x3 and a fourth preset compensation coefficient x4 through the processing module, wherein x1 is more than 1 and more than x2 and more than x3 and more than x4 and less than 1.5;

after the i-th preset biofilm filler addition amount Yi is selected as the addition amount of the biofilm filler added into the aerobic tank in the opening state, i is 1,2,3 and 4, and a compensation coefficient is selected according to the relation between the average gray difference Ua and each preset average gray difference so as to compensate the selected i-th preset biofilm filler addition amount Yi:

Specifically, a first preset temperature adjusting coefficient v1, a second preset temperature adjusting coefficient v2, a third preset temperature adjusting coefficient v3 and a fourth preset temperature adjusting coefficient v4 are also set through the processing module, and 1 < v1 < v2 < v3 < v4 < 1.5;

after the ith preset preheating temperature Hi is selected as the preheating temperature of the sewage in the aerobic tank in the opening state, selecting a temperature adjusting coefficient according to the relation between the average gray difference Ua and each preset average gray difference, so as to adjust the selected ith preset preheating temperature Hi, and taking the adjusted temperature as the preheating temperature of the sewage in the aerobic tank in the opening state:

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.

Claims

1. A wastewater treatment system, comprising: the sewage treatment system comprises a sewage tank, a BOD monitor and a control unit, wherein the sewage tank is used for containing sewage, a first aerobic tank, a second aerobic tank and a third aerobic tank are arranged on one side of the sewage tank side by side, the sewage tank is respectively communicated with the first aerobic tank, the second aerobic tank and the third aerobic tank, and the BOD monitor is used for detecting BOD information of the sewage in the three aerobic tanks in real time;

2. The wastewater treatment system according to claim 1,

the processing module is also used for setting a first preset turbidity D1, a second preset turbidity D2, a third preset turbidity D3 and a fourth preset turbidity D4, wherein D1 is more than D2 and more than D3 and more than D4;

when the delta D is less than D1, only the first aerobic tank is opened;

3. The wastewater treatment system according to claim 2,

the processing module is further used for setting a first preset preheating temperature H1, a second preset preheating temperature H2, a third preset preheating temperature H3 and a fourth preset preheating temperature H4, wherein H1 is more than H2 and more than H3 and more than H4;

4. The wastewater treatment system according to claim 3,

the processing module is further configured to set a first preset gray-level value S1, a second preset gray-level value S2, a third preset gray-level value S3 and a fourth preset gray-level value S4, wherein S1 is greater than S2 and less than S3 and less than S4; the treatment module is also used for setting a first preset activated sludge addition amount X1, a second preset activated sludge addition amount X2, a third preset activated sludge addition amount X3 and a fourth preset activated sludge addition amount X4, wherein X1 is more than X2 and more than X3 is more than X4; the processing module is further used for setting a first preset biofilm filler addition amount Y1, a second preset biofilm filler addition amount Y2, a third preset biofilm filler addition amount Y3 and a fourth preset biofilm filler addition amount Y4, wherein Y1 is more than Y2 and more than Y3 and more than Y4;

5. The wastewater treatment system according to claim 4,

the processing module is further used for intercepting a rectangular image frame from the real-time image information and carrying out gray level processing when the real-time gray level value delta S of the sewage is obtained after the real-time image information of the sewage in the aerobic tank in the open state is obtained, dividing the rectangular image frame into m rectangular areas with the same size, wherein m is an odd number larger than 0, obtaining the gray level value of each rectangular area, summing the gray levels of all the rectangular areas, and obtaining an average gray level value to be used as the real-time gray level value delta S of the sewage;

6. The wastewater treatment system according to claim 5,

the processing module is further configured to, after the rectangular image frame is divided into m × m rectangular regions with the same size, perform difference calculation on the gray values of the rectangular regions located at four corners in the rectangular image frame and the gray values of the rectangular regions located at the center of the rectangular image frame respectively, and perform average value calculation on the four difference values to obtain an average gray difference value Ua between the rectangular regions located at the corners and the rectangular region located at the center in the rectangular image frame;

7. The wastewater treatment system according to claim 6,

the processing module is also used for setting a first preset temperature adjusting coefficient v1, a second preset temperature adjusting coefficient v2, a third preset temperature adjusting coefficient v3 and a fourth preset temperature adjusting coefficient v4, wherein v1 is more than 1 and more than v2 and more than v3 and more than v4 and less than 1.5;

8. A method for treating wastewater, which is carried out by the wastewater treatment system according to any one of claims 1 to 7, comprising:

9. The wastewater treatment method according to claim 8,

setting a first preset turbidity D1, a second preset turbidity D2, a third preset turbidity D3 and a fourth preset turbidity D4, wherein D1 is more than D2 and more than D3 is more than D4, and determining the opening states of the three aerobic tanks according to the relation between the real-time sewage turbidity delta D in the sewage tank and the preset turbidities:

when the delta D is less than D1, only the first aerobic tank is started;

10. The wastewater treatment method according to claim 9,

setting a first preset preheating temperature H1, a second preset preheating temperature H2, a third preset preheating temperature H3 and a fourth preset preheating temperature H4, setting H1 < H2 < H3 < H4, and setting the heating temperature of the sewage in the aerobic tank in an open state according to the relation between the real-time sewage turbidity Delta D of the sewage in the sewage tank and each preset turbidity: