CN113896356B

CN113896356B - Wastewater treatment system and method for building construction

Info

Publication number: CN113896356B
Application number: CN202111359430.9A
Authority: CN
Inventors: 齐炳旭; 李艳艳; 胡相河; 唐健华; 刘文静; 刘博�; 姜鹏; 修占生
Original assignee: Chifeng Hengcheng Construction Engineering Co ltd
Current assignee: Chifeng Hengcheng Construction Engineering Co ltd
Priority date: 2021-11-17
Filing date: 2021-11-17
Publication date: 2023-08-25
Anticipated expiration: 2041-11-17
Also published as: CN113896356A

Abstract

The invention provides a wastewater treatment system and a wastewater treatment method for building construction, wherein the wastewater treatment system comprises a water collecting tank, an oil separation tank is communicated with the water collecting tank, three filtering units are arranged side by side, a sedimentation tank is communicated with the filtering units, a reservoir is communicated with the sedimentation tank, a coagulation tank is used for purifying wastewater, a control unit comprises a processing module, an acquisition module and a control module, the processing module is used for acquiring data acquired by the acquisition module and outputting control instructions for the opening states of the oil separation tank, the coagulation tank and each filtering unit according to the acquired data; the control module is used for controlling the oil separation tank, the coagulation tank and the opening states of the filtering units according to the control instruction. The wastewater collection is carried out through the water collecting tank, the wastewater degreasing operation is carried out through the oil separating tank, the filtering tank filters larger impurities in the wastewater, the coagulation tank purifies the wastewater, the sedimentation tank sediments sediment, and the reservoir stores the wastewater, so that the wastewater in the building construction process can be effectively recycled.

Description

Wastewater treatment system and method for building construction

Technical Field

The invention relates to the technical field of building wastewater treatment, in particular to a wastewater treatment system and method for building construction.

Background

At present, with the development of cities, the demand for houses is also increasing, a large amount of water is needed to be used in building, the building water is not fully utilized in terms of water circulation and water utilization, for the way of building industrial sewage, the current popular sewage treatment method is mostly adopted, open treatment is carried out, the polluted water source is concentrated, the energy consumption is huge, the produced sludge occupies a large amount of land, the sewage river is often bad in odor, the sewage treatment amount needs to occupy the capacity of a reservoir, the added sewage treatment raw materials generate new pollution and increase huge investment, the building sewage contains a large amount of sediment, the sediment is generally treated as waste at present, not only occupies a large amount of land, but also harmful components such as heavy metal, organic pollutants and odor in the sediment become a large part affecting urban environmental sanitation, pollute the environment, and the sewage can not be filtered in a sewage treatment tank, so that the sewage contains solid pollutants, thereby the solid pollutants can not be purified timely, and the sewage discharge can not reach standards.

Therefore, how to effectively recycle the wastewater generated by vehicle flushing and pipeline water closing tests becomes an urgent problem to be solved in the building construction process.

Disclosure of Invention

In view of the above, the invention provides a system and a method for treating wastewater for building construction, which aim to solve the problem of how to effectively recycle the wastewater generated by vehicle flushing and pipeline water closing tests in the building construction process.

In one aspect, the present invention provides a wastewater treatment system for construction, comprising:

the water collecting tank is internally provided with a liquid level meter and is used for collecting wastewater generated by vehicle flushing and pipeline water closing tests, a light emitter, an illumination sensor and an image acquisition unit are arranged above the water collecting tank, the light emitter is used for emitting light rays towards the water surface of the wastewater in the water collecting tank, the illumination sensor is used for acquiring illumination intensity information of the wastewater after the light rays are reflected, and the image acquisition unit is used for acquiring image information of the wastewater in the water collecting tank;

the oil separation tank is communicated with the water collection tank so as to separate oil from water of wastewater input into the oil separation tank;

the filtering units are arranged side by side and are marked as a first filtering unit, a second filtering unit and a third filtering unit, the three filtering units are respectively communicated with the water collecting tank through a conveying pipeline, the oil separation tank is connected in parallel to the conveying pipeline, and the filtering units are used for filtering wastewater; the conveying pipeline is provided with a total flowmeter, and the water inlet end and the water outlet end of the first filtering unit, the second filtering unit and the third filtering unit are respectively provided with sub-flowmeters;

The sedimentation tanks are respectively communicated with the three filtering units so as to sediment the wastewater output by the filtering units;

the reservoir is communicated with the sedimentation tank so as to store the wastewater output by the sedimentation tank;

the coagulation tank is connected in parallel with a pipeline between the sedimentation tank and the reservoir and is used for purifying wastewater output in the sedimentation tank;

the control unit comprises a processing module, an acquisition module and a control module, wherein the acquisition module is respectively and electrically connected with the liquid level meter, the total flowmeter, the sub flowmeter, the illuminator, the illumination sensor and the image acquisition unit to acquire the liquid level height in the water collecting tank, the total water quantity information conveyed in the conveying pipeline and the water quantity information passing through each filtering unit, and also respectively acquire the luminous intensity information of the illuminator, the illumination intensity information acquired by the illumination sensor and the image information acquired by the image acquisition unit, and transmit the acquired data into the processing module; the processing module is used for acquiring the data acquired by the acquisition module and outputting control instructions for the opening states of the oil separation tank, the coagulation tank and the filtering units according to the acquired data; the control module is used for controlling the opening states of the oil separation tank, the coagulation tank and each filtering unit according to the control instruction output by the processing module.

Further, the processing module is used for collecting a preset amount of wastewater in the water collecting tank, acquiring the collected real-time illumination intensity delta P of the illumination sensor in real time, acquiring the real-time average gray value delta H of the wastewater in real time, setting the preset standard illumination intensity P0 and the preset standard average gray value H0, keeping the oil separation tank closed if delta P is smaller than P0, enabling the wastewater to directly enter the filtering unit, and opening the oil separation tank if delta P is larger than or equal to P0, enabling the wastewater to enter the oil separation tank for oil stain filtering at first, and then entering the filtering unit; if delta H is less than H0, keeping the coagulation tank closed, enabling the wastewater output by the filtering unit to directly enter the reservoir for storage, and if delta H is more than or equal to H0, starting the coagulation tank, enabling the wastewater output by the filtering unit to enter the coagulation tank for coagulation, and then inputting the wastewater into the reservoir for storage.

Further, the processing module is further used for setting a first preset water level height A1, a second preset water level height A2, a third preset water level height A3 and a fourth preset water level height A4, wherein A1 is more than A2 and less than A3 and less than A4;

the processing module is further configured to obtain a real-time water level height Δa in the water collection tank in real time, and control an on state of each filtering unit according to a relationship between the real-time water level height Δa and each preset water level height:

When delta A is less than or equal to A1, only starting the first filtering unit;

when A1 is less than delta A and less than or equal to A2, only starting the second filtering unit;

when A2 is less than delta A and less than or equal to A3, only the first filtering unit and the second filtering unit are started;

and when A3 is smaller than delta A and smaller than or equal to A4, simultaneously starting the first filtering unit, the second filtering unit and the third filtering unit.

Further, the processing module is further configured to set a first preset water flow difference value z1, a second preset water flow difference value z2, a third preset water flow difference value z3, and a fourth preset water flow difference value z4, where z1 is greater than z2 and less than z3 and less than z4;

the processing module is further configured to obtain a front-end real-time water flow Δb11 and a rear-end real-time water flow Δb12 of the first filtering unit in real time, obtain a front-end real-time water flow Δb21 and a rear-end real-time water flow Δb22 of the second filtering unit in real time, and obtain a front-end real-time water flow Δb31 and a rear-end real-time water flow Δb32 of the third filtering unit in real time;

the processing module is also used for adjusting the opening state of each filtering unit according to the relation between the water flow difference value between the water inlet end and the water outlet end of each filtering unit and each preset water flow difference value;

when ΔA is less than or equal to A1, and only the first filter unit is turned on:

If delta B11-delta B12 is less than or equal to z1, continuing to keep the first filtering unit in an on state;

if z1 is less than delta B11-delta B12 and less than or equal to z2, closing the first filtering unit at the moment, and only opening the second filtering unit;

if z2 is less than delta B11-delta B12 and is less than or equal to z3, starting the second filtering unit at the moment, so that the first filtering unit and the second filtering unit are simultaneously in an on state;

if z3 is smaller than delta B11-delta B12 and smaller than or equal to z4, starting the second filtering unit and the third filtering unit at the moment, so that the first filtering unit, the second filtering unit and the third filtering unit are in a starting state at the same time;

the processing module is also used for when A1 is less than delta A and less than or equal to A2 and only the second filtering unit is started:

if delta B21-delta B22 is less than or equal to z1, the first filtering unit is started at the moment, when delta B11-delta B12 is less than or equal to z1, the second filtering unit is closed at the moment, only the first filtering unit is started, and when z1 is less than delta B11-delta B12 is less than or equal to z2, the first filtering unit is closed at the moment, and only the second filtering unit is started;

if z1 is less than delta B21-delta B22 and less than or equal to z2, continuing to keep the second filtering unit in an on state;

if z2 is less than delta B21-delta B22 and is less than or equal to z3, the first filtering unit and the second filtering unit are started at the same time;

If z3 is less than delta B21-delta B22 and is less than or equal to z4, simultaneously starting the first filtering unit, the second filtering unit and the third filtering unit;

the processing module is also used for when A2 is less than delta A and less than or equal to A3 and only the first filtering unit and the second filtering unit are started:

if ΔB11- ΔB12 is less than or equal to z1 or ΔB21- ΔB22 is less than or equal to z1, continuing to keep only the first filter unit and the second filter unit on at the moment;

if z1 is less than delta B11-delta B12 and z1 is less than delta B21-delta B22 and less than or equal to z2, closing the first filter unit and opening the third filter unit at the moment so that the second filter unit and the third filter unit are simultaneously in an opening state;

if z2 is smaller than delta B21-delta B22, then the third filter unit is started at this time, so that the first filter unit, the second filter unit and the third filter unit are simultaneously in an open state.

Further, an electric regulating valve is further arranged on a pipeline at the water outlet end of the water collecting tank and used for regulating the water flow rate of the water outlet of the water collecting tank, and the electric regulating valve is electrically connected with the control module;

the processing module is also used for setting a first preset water outlet flow L1, a second preset water outlet flow L2, a third preset water outlet flow L3 and a fourth preset water outlet flow L4, wherein L1 is more than L2 is more than L3 is more than L4;

The processing module is further configured to set, in real time, a water flow rate when the water collecting tank discharges water according to a relationship between a difference value between a front-end real-time water flow rate Δb31 and a rear-end real-time water flow rate Δb32 of the third filtering unit and each preset water flow rate difference value after the first filtering unit, the second filtering unit and the third filtering unit are simultaneously opened:

when delta B31-delta B32 is less than or equal to z1, selecting the first preset water outlet flow L1 as the water flow of the water collecting tank when water is discharged;

when z1 is less than delta B31-delta B32 and is less than or equal to z2, selecting the second preset water outlet flow L2 as the water flow of the water collecting tank when water is discharged;

when z2 is less than delta B31-delta B32 and is less than or equal to z3, selecting the third preset water outlet flow L3 as the water flow of the water collecting tank when water is discharged;

when z3 is less than delta B31-delta B32 and is less than or equal to z4, selecting the fourth preset water outlet flow L4 as the water flow of the water collecting tank when water is discharged;

when the i preset water outlet flow Li is selected as the water outlet flow of the water collecting tank, i=1, 2,3 and 4, and the opening degree of the electric regulating valve is regulated by the control module, so that the water outlet flow of the water collecting tank is the i preset water outlet flow Li.

Further, the processing module is further configured to set a first preset average gray value H1, a second preset average gray value H2, a third preset average gray value H3, and a fourth preset average gray value H4, where H1 is greater than H2 and less than H3 and less than H4; the processing module is also 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 3 and y4 is more than 1.5;

the processing module is further configured to select a correction coefficient according to a relationship between a real-time average gray value Δh and each preset average gray value, so as to correct the i-th preset water outlet flow Li selected when the water collecting tank is discharged:

when delta H is less than or equal to H1, the first preset correction coefficient y1 is selected to correct the i preset water outlet flow Li, and the corrected water outlet flow Li x 1 is used as the water flow of the water collecting tank in water outlet;

when H1 is more than delta H and less than or equal to H2, selecting the second preset correction coefficient y2 to correct the ith preset water outlet flow Li, and taking the corrected water outlet flow Li x y2 as the water flow of the water collecting tank during water outlet;

when H2 is less than delta H and less than or equal to H3, selecting the third preset correction coefficient y3 to correct the ith preset water outlet flow Li, and taking the corrected water outlet flow Li x y3 as the water flow of the water collecting tank during water outlet;

When H3 is less than delta H and less than or equal to H4, the fourth preset correction coefficient y4 is selected to correct the ith preset water outlet flow Li, and the corrected water outlet flow Li is taken as the water flow when the water collecting tank is discharged.

Further, the processing module is further configured to set 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, where x1 is greater than 1 and x2 is greater than 3 and x4 is greater than 1.5;

the processing module is further configured to select a compensation coefficient according to a relationship between the real-time water level height Δa in the water collection tank and each preset water level height after the i-th preset correction coefficient yi is selected to correct the i-th preset water outlet flow Li, where i=1, 2,3, and 4, so as to compensate the corrected water outlet flow Li x yi when the water collection tank is discharged:

when delta A is less than or equal to A1, selecting the first preset compensation coefficient x1, compensating the corrected water outlet flow Li x yi when the water collecting tank is discharged, and taking the compensated water outlet flow Li x yi x1 as the water flow when the water collecting tank is discharged;

when A1 is less than delta A and less than or equal to A2, selecting the second preset compensation coefficient x2, compensating the corrected water outlet flow Li x yi when the water is discharged from the water collecting tank, and taking the compensated water outlet flow Li x yi x2 as the water flow when the water is discharged from the water collecting tank;

When A2 is less than delta A and less than or equal to A3, selecting the third preset compensation coefficient x3, compensating the corrected water outlet flow Li x yi when the water is discharged from the water collecting tank, and taking the compensated water outlet flow Li x yi x3 as the water flow when the water is discharged from the water collecting tank;

when A3 is smaller than delta A and smaller than or equal to A4, selecting the fourth preset compensation coefficient x4, compensating the corrected water outlet flow Li x yi when the water collecting tank is discharged, and taking the compensated water outlet flow Li x yi x4 as the water flow when the water collecting tank is discharged.

Further, the processing module is further configured to, after acquiring the real-time image information of the wastewater in the water collection tank, intercept a rectangular image frame from the real-time image information and perform gray processing when acquiring the real-time average gray value Δh of the wastewater, divide the rectangular image frame into m×m rectangular areas with the same size, where m is an odd number greater than 0, acquire the gray value of each rectangular area, sum the gray values of all the rectangular areas, and acquire an average gray value as the real-time average gray value Δh of the wastewater;

the processing module is also used for setting a first preset coagulant addition amount K1, a second preset coagulant addition amount K2, a third preset coagulant addition amount K3 and a fourth preset coagulant addition amount K4, wherein K1 is more than K2 and less than K3 and less than K4;

The processing module is further used for setting the addition amount of the coagulant in the coagulation tank according to the relation between the real-time average gray value delta H and each preset average gray value when the wastewater in the coagulation tank needs to be coagulated:

when delta H is less than H1, selecting the first preset coagulant addition amount K1 as the addition amount of the coagulant added into the coagulation basin;

when H1 is less than or equal to delta H and less than H2, selecting the second preset coagulant addition amount K2 as the addition amount of the coagulant added into the coagulation tank;

when H2 is less than or equal to delta H and less than H3, selecting the third preset coagulant addition amount K3 as the addition amount of the coagulant added into the coagulation tank;

when H3 is less than or equal to delta H and less than H4, selecting the fourth preset coagulant addition amount K4 as the addition amount of the coagulant added into the coagulation tank.

Further, the processing module is further configured to, after dividing the rectangular image frame into m×m rectangular areas with the same size, calculate difference values between gray values of the rectangular areas located at four corners in the rectangular image frame and gray values of the rectangular areas located at the center of the rectangular image frame, and calculate average values of the four difference values, so as to obtain an average gray difference value Ha between the rectangular areas located at corners and the rectangular areas located at the center in the rectangular image frame;

The processing module is further used for setting a first preset average gray difference value Ha1, a second preset average gray difference value Ha2, a third preset average gray difference value Ha3 and a fourth preset average gray difference value Ha4, wherein Ha1 is more than Ha2 is more than Ha3 and less than Ha4; the processing module is also used for setting a first preset coagulant addition correction coefficient x1, a second preset coagulant addition correction coefficient x2, a third preset coagulant addition correction coefficient x3 and a fourth preset coagulant addition correction coefficient x4, wherein x1 is more than 1 and less than x2 and x3 is more than 1.2 and less than x 4;

the processing module is further configured to select, after selecting the i-th preset coagulant addition Ki as the addition amount of the coagulant added into the coagulation basin, i=1, 2,3,4, and according to the relationship between the average gray-scale difference value Ha and each preset average gray-scale difference value, select a preset coagulant addition correction coefficient to correct the i-th preset coagulant addition Ki:

when Ha is less than Ha1, the i-th preset coagulant addition Ki is not corrected;

when Ha1 is less than or equal to Ha2, selecting the first preset coagulant addition correction coefficient x1 to correct the i-th preset coagulant addition Ki, wherein the corrected coagulant addition is Li x1;

When Ha2 is less than or equal to Ha3, selecting a second preset coagulant addition correction coefficient x2 to correct the i-th preset coagulant addition Ki, wherein the corrected coagulant addition is Li x2;

when Ha3 is less than or equal to Ha4, selecting a third preset coagulant addition correction coefficient x3 to correct the i-th preset coagulant addition Ki, wherein the corrected coagulant addition is Li x3;

when Ha4 is less than or equal to Ha, a fourth preset coagulant addition correction coefficient x4 is selected to correct the i-th preset coagulant addition Ki, and the corrected coagulant addition is Li x4.

Compared with the prior art, the invention has the beneficial effects that the wastewater is collected through the arranged water collecting tank, the wastewater degreasing operation is carried out through the oil separating tank, the filtering tank filters larger impurities in the wastewater, the coagulation tank purifies the wastewater, the sedimentation tank sediments sediment, and the reservoir stores the wastewater, so that the wastewater in the building construction process can be effectively recycled, the water source can be effectively saved, and the environment is protected.

Further, by arranging the control unit to perform full-automatic management and control of the wastewater treatment process, the wastewater treatment efficiency can be greatly improved, the investment of personnel is reduced, and the cost is saved.

Further, a light emitter, an illumination sensor and an image acquisition unit are arranged above the water collection tank, the light emitter is used for emitting light rays towards the water surface of the wastewater in the water collection tank, the illumination sensor is used for acquiring illumination intensity information of the wastewater after the light rays are reflected by the wastewater, the image acquisition unit is used for acquiring image information of the wastewater in the water collection tank, and an acquisition module of the control unit respectively acquires the light intensity information of the light emitter, the illumination intensity information acquired by the illumination sensor and the image information acquired by the image acquisition unit and transmits the acquired data into the processing module; the processing module is used for acquiring the data acquired by the acquisition module and controlling the opening states of the oil separation tank, the coagulation tank and each filtering unit according to the acquired data, so that the control efficiency of the system is greatly improved. Meanwhile, the system has a simple structure, is convenient to implement, does not need large equipment investment, can effectively collect and treat the wastewater in a small-range area, and therefore can reduce the discharge of the wastewater, and meanwhile, the wastewater utilization rate is improved.

Further, after the real-time image information of the wastewater in the water collecting tank is obtained through the processing module, a real-time average gray value of the real-time image information is obtained, and whether coagulant is added into the wastewater in the coagulation tank is judged according to the real-time average gray value, so that the coagulation effect of the wastewater can be greatly improved and the waste of the coagulant is avoided by adding the matched addition amount of the coagulant according to the wastewater pollution degree at the feedback position of the image gray value of the wastewater.

On the other hand, the invention also provides a wastewater treatment method for building construction, which is implemented by adopting the wastewater treatment system for building construction and comprises the following steps:

step a: collecting waste water generated by vehicle flushing and pipeline water closing tests;

step b: the collected wastewater is input into an oil separation tank or directly conveyed into a filtering unit for filtering;

step c: precipitating and purifying the wastewater output by the filtering unit;

step d: delivering the precipitated and purified wastewater to the reservoir for storage; wherein,

after the waste water is collected, illumination intensity information after the waste water reflects light and image information of the waste water are respectively obtained, and the opening states of the oil separation tank, the coagulation tank and each filtering unit are controlled according to the obtained illumination intensity information and the obtained image information.

It is understood that the wastewater treatment method for construction and the wastewater treatment system for construction of the present invention have the same advantageous effects 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 designate like parts throughout the figures. In the drawings:

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

fig. 2 is a functional block diagram of a control unit 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, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.

Referring to fig. 1 and 2, the present embodiment provides a wastewater treatment system for construction, which includes a water collecting tank 1, an oil separation tank 6, a filtering unit, a sedimentation tank 10, a water reservoir 12, a coagulation tank 11, and a control unit 2.

Specifically, the inside level gauge that is provided with of catch basin 1, catch basin 1 is used for collecting the waste water that vehicle washing and pipeline closed water test produced, the top of catch basin 1 is provided with illuminator 5, illumination sensor 4 and image acquisition unit 3, illuminator 5 is used for the orientation the surface of water of waste water in catch basin 1 launches light, illumination sensor 4 is used for obtaining the illumination intensity information behind the waste water reflection light, image acquisition unit 3 is used for gathering the image information of waste water in the catch basin 1.

Specifically, the oil separation tank 6 communicates with the water collection tank 1 to separate oil from water of wastewater inputted thereto.

Specifically, three filtering units are arranged side by side, namely a first filtering unit 7, a second filtering unit 8 and a third filtering unit 9, the three filtering units are respectively communicated with the water collecting tank 1 through a conveying pipeline, the oil separation tank 6 is connected in parallel to the conveying pipeline, and the filtering units are used for filtering wastewater; the conveying pipeline is provided with a total flowmeter, and the water inlet end and the water outlet end of the first filtering unit 7, the second filtering unit 8 and the third filtering unit 9 are respectively provided with sub-flowmeters.

Specifically, the sedimentation tanks 10 are respectively communicated with the three filtering units to sediment the wastewater outputted from the filtering units.

Specifically, a water reservoir 12 is in communication with the sedimentation tank 10 to store the wastewater outputted from the sedimentation tank 10.

Specifically, the coagulation tank 11 is connected in parallel to a pipeline between the sedimentation tank 10 and the reservoir 12, and is used for purifying wastewater output from the sedimentation tank 10.

Specifically, the control unit 2 includes a processing module, an acquisition module and a control module, where the acquisition module is electrically connected with the liquid level meter, the total flowmeter, the sub-flowmeter, the illuminator 5, the illumination sensor 4 and the image acquisition unit 3 respectively, so as to acquire the liquid level height in the water collecting tank 1, the total water quantity information conveyed in the conveying pipeline and the water quantity information passing through each filtering unit, and further acquire the luminous intensity information of the illuminator 5, the illumination intensity information acquired by the illumination sensor 4 and the image information acquired by the image acquisition unit 3 respectively, and transmit the acquired data into the processing module; the processing module is used for acquiring the data acquired by the acquisition module and outputting control instructions for the opening states of the oil separation tank 6, the coagulation tank 11 and the filtering units according to the acquired data; the control module is used for controlling the opening states of the oil separation tank 6, the coagulation tank 11 and the filtering units according to the control instruction output by the processing module.

Can see that carrying out waste water collection through the catch basin that sets up, oil removal pond carries out waste water degreasing operation, and the great impurity in the filter-tank filtration waste water, coagulating basin carry out the purification of waste water, and sedimentation tank deposits silt, and the cistern carries out the storage of waste water, and the waste water in the convenience building construction process can be effectively by reuse to can save the water source effectively, protect the environment.

Specifically, the processing module is used for collecting a preset amount of wastewater in the water collecting tank, acquiring the collected real-time illumination intensity delta P of the illumination sensor in real time, acquiring the real-time average gray value delta H of the wastewater in real time, setting the preset standard illumination intensity P0 and the preset standard average gray value H0, keeping the oil separation tank closed if delta P is smaller than P0, enabling the wastewater to directly enter the filtering unit, and opening the oil separation tank if delta P is larger than or equal to P0, enabling the wastewater to enter the oil separation tank for oil stain filtering at first, and then entering the filtering unit; if delta H is less than H0, keeping the coagulation tank closed, enabling the wastewater output by the filtering unit to directly enter the reservoir for storage, and if delta H is more than or equal to H0, starting the coagulation tank, enabling the wastewater output by the filtering unit to enter the coagulation tank for coagulation, and then inputting the wastewater into the reservoir for storage.

Specifically, the processing module is further configured to set a first preset water level height A1, a second preset water level height A2, a third preset water level height A3, and a fourth preset water level height A4, where A1 is greater than A2 and less than A3 and less than A4;

Specifically, the processing module is further configured to set a first preset water flow difference value z1, a second preset water flow difference value z2, a third preset water flow difference value z3, and a fourth preset water flow difference value z4, where z1 is greater than z2 and less than z3 and less than z4;

Specifically, an electric regulating valve is further arranged on a pipeline at the water outlet end of the water collecting tank and used for regulating the water flow rate of the water outlet of the water collecting tank, and the electric regulating valve is electrically connected with the control module;

Specifically, the processing module is further configured to set a first preset average gray value H1, a second preset average gray value H2, a third preset average gray value H3, and a fourth preset average gray value H4, where H1 is greater than H2 and less than H3 and less than H4; the processing module is also 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 3 and y4 is more than 1.5;

Specifically, the processing module is further configured to set 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, where x1 is greater than 1 and x2 is greater than 3 and x4 is greater than 1.5;

Specifically, the processing module is further configured to, after acquiring real-time image information of the wastewater in the water collection tank, intercept a rectangular image frame from the real-time image information and perform gray processing when acquiring a real-time average gray value Δh of the wastewater, divide the rectangular image frame into m×m rectangular areas with the same size, where m is an odd number greater than 0, acquire a gray value of each rectangular area, sum the gray values of all the rectangular areas, and acquire an average gray value as the real-time average gray value Δh of the wastewater;

Specifically, the processing module is further configured to, after dividing the rectangular image frame into m×m rectangular areas with the same size, calculate difference values between gray values of the rectangular areas located at four corners in the rectangular image frame and gray values of the rectangular areas located at the center of the rectangular image frame, and calculate average values of the four difference values, so as to obtain an average gray difference value Ha between the rectangular areas located at corners and the rectangular areas located at the center in the rectangular image frame;

It can be seen that, in the above embodiment, by arranging the light emitter, the illumination sensor and the image acquisition unit above the water collection tank, the light emitter is used for emitting light towards the water surface of the wastewater in the water collection tank, the illumination sensor is used for acquiring the illumination intensity information of the wastewater after reflecting the light, the image acquisition unit is used for acquiring the image information of the wastewater in the water collection tank, and the acquisition module of the control unit respectively acquires the light emitting intensity information of the light emitter, the illumination intensity information acquired by the illumination sensor and the image information acquired by the image acquisition unit and transmits the acquired data into the processing module; the processing module is used for acquiring the data acquired by the acquisition module and controlling the opening states of the oil separation tank, the coagulation tank and each filtering unit according to the acquired data, so that the control efficiency of the system is greatly improved. Meanwhile, the system has a simple structure, is convenient to implement, does not need large equipment investment, can effectively collect and treat the wastewater in a small-range area, and therefore can reduce the discharge of the wastewater, and meanwhile, the wastewater utilization rate is improved.

In another preferred implementation manner based on the above embodiment, the present embodiment provides a method for treating wastewater for construction, where the method adopts the wastewater treatment system for construction in the above embodiment, and the method of the present embodiment includes the following steps:

step d: and conveying the precipitated and purified wastewater to the water reservoir for storage.

Specifically, after the wastewater is collected, illumination intensity information after the wastewater reflects light and image information of the wastewater are respectively obtained, and the opening states of the oil separation tank, the coagulation tank and each filtering unit are controlled according to the obtained illumination intensity information and the obtained image information.

Specifically, when the method is implemented, after the preset amount of wastewater is collected in the water collecting tank, the real-time illumination intensity delta P collected by the illumination sensor is obtained in real time through the processing module, the real-time average gray value delta H of the wastewater is obtained in real time, the processing module is used for setting the preset standard illumination intensity P0 and the preset standard average gray value H0, if delta P is smaller than P0, the oil separation tank is kept closed, the wastewater directly enters the filtering unit, and if delta P is larger than or equal to P0, the oil separation tank is opened, so that the wastewater firstly enters the oil separation tank for oil pollution filtering, and then enters the filtering unit; if delta H is less than H0, keeping the coagulation tank closed, enabling the wastewater output by the filtering unit to directly enter the reservoir for storage, and if delta H is more than or equal to H0, starting the coagulation tank, enabling the wastewater output by the filtering unit to enter the coagulation tank for coagulation, and then inputting the wastewater into the reservoir for storage.

Specifically, a first preset water level height A1, a second preset water level height A2, a third preset water level height A3 and a fourth preset water level height A4 are set through a processing module, wherein A1 is more than A2 and less than A3 and less than A4;

the method comprises the steps of acquiring the real-time water level height delta A in the water collecting tank in real time through a processing module, and controlling the opening state of each filtering unit according to the relation between the real-time water level height delta A and each preset water level height:

Specifically, a first preset water flow difference value z1, a second preset water flow difference value z2, a third preset water flow difference value z3 and a fourth preset water flow difference value z4 are set through a processing module, and z1 is more than z2 and less than z3 and less than z4;

the front-end real-time water flow delta B11 and the rear-end real-time water flow delta B12 of the first filter unit are obtained in real time through a processing module, the front-end real-time water flow delta B21 and the rear-end real-time water flow delta B22 of the second filter unit are obtained in real time, and the front-end real-time water flow delta B31 and the rear-end real-time water flow delta B32 of the third filter unit are obtained in real time;

the method comprises the steps that the opening state of each filter unit is adjusted through a processing module according to the relation between the water flow difference value between the water inlet end and the water outlet end of each filter unit and each preset water flow difference value;

when A1 < DeltaA.ltoreq.A2 and only the second filter unit is turned on:

when A2 is less than delta A and less than or equal to A3, and only the first filtering unit and the second filtering unit are started:

setting a first preset water outlet flow L1, a second preset water outlet flow L2, a third preset water outlet flow L3 and a fourth preset water outlet flow L4 through a processing module, wherein L1 is more than L2 is more than L3 is more than L4;

After the first filtering unit, the second filtering unit and the third filtering unit are simultaneously started, setting the water flow rate of the water collecting tank when water is discharged in real time according to the relation between the difference value between the front-end real-time water flow rate delta B31 and the rear-end real-time water flow rate delta B32 of the third filtering unit and each preset water flow rate difference value:

Specifically, a first preset average gray value H1, a second preset average gray value H2, a third preset average gray value H3 and a fourth preset average gray value H4 are set through a processing module, and H1 is more than H2 and less than H3 and less than H4; 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 through a processing module, wherein y1 is more than 1 and y2 is more than 3 and y4 is more than 1.5;

Selecting a correction coefficient according to the relation between the real-time average gray value delta H and each preset average gray value by a processing module so as to correct the i preset water outlet flow Li selected when the water of the water collecting tank is discharged:

when delta H is less than or equal to H1, the first preset correction coefficient y1 is selected to correct the i preset water outlet flow Li, and the corrected water outlet flow Li x1 is used as the water flow of the water collecting tank in water outlet;

Specifically, 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 are set through a processing module, wherein x1 is more than 1 and x2 is more than 1 and x3 is more than 3 and x4 is less than 1.5;

After the ith preset correction coefficient yi is selected to correct the ith preset water outlet flow Li, i=1, 2,3,4, and a compensation coefficient is selected according to the relation between the real-time water level height Δa in the water collecting tank and each preset water level height, so as to compensate the corrected water outlet flow li×yi when the water is discharged from the water collecting tank:

Specifically, after acquiring real-time image information of wastewater in the water collecting tank through a processing module, when acquiring real-time average gray values delta H of the wastewater, intercepting a rectangular image frame from the real-time image information and carrying out gray processing, dividing the rectangular image frame into m-m rectangular areas with the same size, wherein m is an odd number larger than 0, acquiring gray values of each rectangular area, summing the gray values of all the rectangular areas, and acquiring average gray values to be used as the real-time average gray values delta H of the wastewater;

setting a first preset coagulant addition amount K1, a second preset coagulant addition amount K2, a third preset coagulant addition amount K3 and a fourth preset coagulant addition amount K4 through a processing module, wherein K1 is more than K2 and less than K3 and less than K4;

when the wastewater in the coagulation tank needs to be coagulated, setting the addition amount of the coagulant in the coagulation tank according to the relation between the real-time average gray value delta H and each preset average gray value:

Specifically, after the rectangular image frame is divided into m x m rectangular areas with the same size by a processing module, respectively carrying out difference value calculation on gray values of the rectangular areas positioned at four corners in the rectangular image frame and gray values of the rectangular areas positioned at the center of the rectangular image frame, and carrying out average value calculation on four difference values to obtain an average gray difference value Ha between the rectangular areas positioned at corners and the rectangular areas positioned at the center in the rectangular image frame;

setting a first preset average gray difference value Ha1, a second preset average gray difference value Ha2, a third preset average gray difference value Ha3 and a fourth preset average gray difference value Ha4 through a processing module, wherein Ha1 is more than Ha2 and less than Ha3 and less than Ha4; setting a first preset coagulant addition correction coefficient x1, a second preset coagulant addition correction coefficient x2, a third preset coagulant addition correction coefficient x3 and a fourth preset coagulant addition correction coefficient x4 through a processing module, wherein x1 is more than 1 and less than 2, x3 is more than 3 and less than 1.2;

After the i-th preset coagulant addition amount Ki is selected as the addition amount of the coagulant added into the coagulation basin, i=1, 2,3,4, and a preset coagulant addition amount correction coefficient is selected according to the relation between the average gray level difference value Ha and each preset average gray level difference value so as to correct the i-th preset coagulant addition amount Ki:

It can be seen that the above embodiments can effectively improve the sewage treatment effect and save the labor cost by setting the control unit to intelligently and automatically control the process of wastewater treatment. Meanwhile, the coagulant in the wastewater treatment process can be timely adjusted through the collected real-time gray value information and water flow information of the wastewater, so that the wastewater treatment efficiency and the wastewater treatment effect can be effectively improved, and meanwhile, the wastewater treatment cost can be greatly saved.

It will be appreciated by those skilled in the art that 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 flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations 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 aspects of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the invention without departing from the spirit and scope of the invention, which is intended to be covered by the claims.

Claims

1. A wastewater treatment system for construction, comprising:

the control unit comprises a processing module, an acquisition module and a control module, wherein the acquisition module is respectively and electrically connected with the liquid level meter, the total flowmeter, the sub flowmeter, the illuminator, the illumination sensor and the image acquisition unit to acquire the liquid level height in the water collecting tank, the total water quantity information conveyed in the conveying pipeline and the water quantity information passing through each filtering unit, and also respectively acquire the luminous intensity information of the illuminator, the illumination intensity information acquired by the illumination sensor and the image information acquired by the image acquisition unit, and transmit the acquired data into the processing module; the processing module is used for acquiring the data acquired by the acquisition module and outputting control instructions for the opening states of the oil separation tank, the coagulation tank and the filtering units according to the acquired data; the control module is used for controlling the opening states of the oil separation tank, the coagulation tank and each filtering unit according to the control instruction output by the processing module;

The processing module is used for collecting a preset amount of wastewater in the water collecting tank, acquiring the collected real-time illumination intensity delta P of the illumination sensor in real time, acquiring the real-time average gray value delta H of the wastewater in real time, setting the preset standard illumination intensity P0 and the preset standard average gray value H0, keeping the oil separation tank closed if delta P is smaller than P0, enabling the wastewater to directly enter the filtering unit, and opening the oil separation tank if delta P is larger than or equal to P0, enabling the wastewater to enter the oil separation tank for oil stain filtering at first and then enter the filtering unit; if delta H is less than H0, keeping the coagulation tank closed, enabling the wastewater output by the filtering unit to directly enter the reservoir for storage, and if delta H is more than or equal to H0, starting the coagulation tank, enabling the wastewater output by the filtering unit to enter the coagulation tank for coagulation, and then inputting the wastewater into the reservoir for storage; an electric regulating valve is further arranged on a pipeline at the water outlet end of the water collecting tank and used for regulating the water flow rate when the water is discharged from the water collecting tank, and the electric regulating valve is electrically connected with the control module;

when the i preset water outlet flow Li is selected as the water outlet flow of the water collecting tank, i=1, 2,3 and 4, and the opening degree of the electric regulating valve is regulated by the control module so that the water outlet flow of the water collecting tank is the i preset water outlet flow Li;

The processing module is further used for setting a first preset average gray value H1, a second preset average gray value H2, a third preset average gray value H3 and a fourth preset average gray value H4, wherein H1 is more than H2 and less than H3 and less than H4; the processing module is also 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 3 and y4 is more than 1.5;

When H3 is more than delta H and less than or equal to H4, selecting the fourth preset correction coefficient y4 to correct the ith preset water outlet flow Li, and taking the corrected water outlet flow Li x y4 as the water flow of the water collecting tank during water outlet;

the processing module is also 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 3 and x4 is more than 1.5;

when A3 is less than delta A and less than or equal to A4, selecting the fourth preset compensation coefficient x4, compensating the corrected water outlet flow Li x yi when the water is discharged from the water collecting tank, and taking the compensated water outlet flow Li x yi x4 as the water flow when the water is discharged from the water collecting tank;

the processing module is further used for intercepting a rectangular image frame from the real-time image information and carrying out gray processing after acquiring the real-time image information of the wastewater in the water collecting tank, acquiring gray values of each rectangular area, summing the gray values of all the rectangular areas, and acquiring an average gray value to be used as the real-time average gray value delta H of the wastewater;

2. The wastewater treatment system for construction according to claim 1, wherein,

the processing module is also used for setting a first preset water level height A1, a second preset water level height A2, a third preset water level height A3 and a fourth preset water level height A4, wherein A1 is more than A2 and less than A3 and less than A4;

3. The wastewater treatment system for construction according to claim 2, wherein,

the processing module is also used for setting a first preset water flow difference value z1, a second preset water flow difference value z2, a third preset water flow difference value z3 and a fourth preset water flow difference value z4, wherein z1 is more than z2 and less than z3 and less than z4;

4. The wastewater treatment system for construction according to claim 3, wherein,

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

5. A method of treating wastewater for construction, characterized by being implemented by using the wastewater treatment system for construction according to any one of claims 1 to 4, comprising the steps of: