CN202909541U - Filtrating device for COD (Chemical Oxygen Demand) online measurement of wastewater treatment - Google Patents

Abstract

The utility model relates to wastewater treatment, in particular to a filtrating device for COD (Chemical Oxygen Demand) online measurement of wastewater treatment. A filter (8) adopts a rotary shaft type structure; a filter screen (803) in the filter (8) is divided into four groups which are circumferentially distributed along a shaft (801); and the shaft (801) rotates, water treated by primary wastewater treatment equipment (2) is filtered by the filter screen (803), and the treated water passes through the four groups of filter screens . The filter screen (803) adopts a detachable structure, so that the filter screen is convenient to replace and precipitate depositing on the filter screen (803) is convenient to remove.

Description

The filter that the COD on-line measurement is used in the sewage disposal

The utility model is dividing an application to chemical oxygen content COD on-line measurement device in applying date 2012-10-19, application number 2012205369324, the invention and created name sewage disposal.

Technical field

The utility model relates to the filter that the COD on-line measurement is used in a kind of sewage disposal, particularly sewage disposal.

Background technology

Organic matter in the water has good absorption to the ultraviolet light on the wavelength 221 nm-330nm wave bands, can have indirectly to reach by the detection to absorbance and detect chemical oxygen content COD measurement in the water.Yet owing to have a small amount of suspension in the sewage disposal later stage water, affected the precision of optical measurement, because the sewage speciality is different, affected to a certain extent chemical oxygen content COD certainty of measurement in the water on the other hand.

In order to address this is that, existing method is that a wavelength is benchmark by the impact by the moving suspension of double wave regular way elimination ripples, and another wavelength detects, and reaches to improve chemical oxygen content COD certainty of measurement.

The utility model content

The purpose of this utility model provides the filter that the COD on-line measurement is used in the high sewage disposal of a kind of precision.

The purpose of this utility model is to realize like this, the filter that the COD on-line measurement is used in the sewage disposal, it is characterized in that: filter (8) is the type rotary shaft structure, screen pack (803) in the filter (8) is divided into four groups, along axle (801) circle distribution, axle (801) rotates, and the water after prime sewage disposal device (2) is processed filters by screen pack (803), and the timesharing on four groups of screen packs of the water after the processing is passed through.

Described screen pack (803) is the releasable structure, is convenient for changing and scavenger precipitation sediment on the net.

Each group of described four groups of screen packs sinks in the filter cylinder (802), is sealed by seal groove (804) between the screen pack.

Operation principle of the present utility model is: the prime sewage disposal device is processed sewage, chemical oxygen content COD to water quality detects by standard C OD detector, to a producer, water quality characteristic has certain repeatability, and this just provides resource for us for accurate continuous detecting or gap detection chemistry oxygen content COD is achieved.Standard water quality and quantity-produced disposed of sewage to be compared, and obtains the result.

The utility model is owing to increased filter and the water level fluctuation wave absorption plate in early stage, reduced on the one hand the amount of suspension in the water, compare detection by standard water quality on the other hand, effectively really taken suspension and different quality to detecting the impact of easy formation, greatly improved accuracy of detection.

Description of drawings

The utility model is described in further detail below in conjunction with the embodiment accompanying drawing:

Fig. 1 is the utility model example structure schematic diagram;

Fig. 2 is filter 8 structural representations;

Fig. 3 is ultraviolet light detecting unit 7 structural representations;

Fig. 4 is standard water detection cell 707 structural representations;

Fig. 5 is embodiment one structural representation of controller 12;

Fig. 6 is embodiment two structural representations of controller 12;

Fig. 7 is embodiment three structural representations of controller 12.

Among the figure: 1, sewage; 2, prime sewage disposal device; 3, triple valve; 4, the first ball valve; 5, collecting-tank; 6, water level fluctuation wave absorption plate; 7, ultraviolet light detecting unit; 701, interferometric filter; 702, Amici prism; 703, the first collimated light path; 704, process the water detection cell; 705, process water and detect photoelectric tube; 706, the second collimated light path; 707, standard water detection cell; 7071, pond body; 7072, around axle; 7073, organize transparent pond more; 708, standard water detects photoelectric tube; 8, filter; 801, axle; 802, filter cylinder; 803, screen pack; 804, seal groove; 9, shunting detection cell; 10, detection light source; 11, the second ball valve; 12, controller; 1201, COM1; 1202, display; 1203, Programmable Logic Controller; 1204, keyboard; 1205, power supply; 1206, valve control; 1207, process water and detect the photoelectric tube amplifying circuit; 1208, standard water detects the photoelectric tube amplifying circuit; 1209, the first motor-drive circuit; 1210, the second motor-drive circuit; 1211, flow detection unit; 1212, gsm communication module.

The specific embodiment

As shown in Figure 1, the filter that the COD on-line measurement is used in the sewage disposal, comprise prime sewage disposal device 2 and ultraviolet light detecting unit 7, sewage 1 is introduced prime sewage disposal device 2 by pipeline, be divided into two-way by triple valve 3 after prime sewage disposal device 2 is processed, the first via controls to collecting-tank 5 by the first ball valve 4; The second the tunnel filters rear arriving by 8 pairs of suspensions of filter shunts detection cell 9, shunting detection cell 9 is by being diverted to ultraviolet light detecting unit 7, processing water after 7 pairs of ultraviolet light detecting units filter by filter 8 carries out COD to be measured, and the water after the measurement is sneaked into collecting-tank 5 after by the second ball valve 11.

As shown in Figure 2, filter 8 is the type rotary shaft structure, and the screen pack 803 in the filter 8 is divided into four groups, and along axle 801 circle distribution, axle 801 rotates, on the rotation axial organ.Water after prime sewage disposal device 2 is processed filters by screen pack 803, screen pack 803 is divided into four groups of rotations, the timesharing on four groups of screen packs of water after the processing is passed through, and screen pack 803 is the releasable structure, is convenient for changing and scavenger precipitation sediment on the net.When axle 801 when the deceleration of decelerator is rotated, when rotating a circle such as one hour, replaceable to not entering the screen pack that filters the pool.Each group screen pack sinks in the filter cylinder 802, is sealed by seal groove 804 between the screen pack.

As shown in Figure 3, ultraviolet light detecting unit 7 comprises light source 10, interferometric filter 701, Amici prism 702, the first collimated light path 703, the second collimated light path 706, process water detection cell 704, standard water detection cell 707, process water and detect photoelectric tube 705, standard water detects photoelectric tube 708, light source 10 is by behind the interferometric filter 701, absorb the light of its commplementary wave length, only allow the ultraviolet light of 257 wavelength pass through, the ultraviolet light of 257 wavelength is divided into two-way by Amici prism 702, two-way each point 50%, two-way light is collimated into tiny light beam by the first collimated light path 703 and the second collimated light path 706, enter respectively and process water detection cell 704 and standard water detection cell 707, processing water detection cell 704 and standard water detection cell 707 opposite sides has respectively the water of processing to detect photoelectric tube 705 and standard water detection photoelectric tube 708, process the light transmittance that water detects photoelectric tube 705 Check processing water, standard water detects the light transmittance of photoelectric tube 708 examination criteria water, 12 pairs of standard water of testing circuit and processing water carry out data analysis, computation of table lookup obtains processing the real-time COD amount of water, and the result sends to the control room.Process water and enter at last collecting-tank 5.

As shown in Figure 4, standard water detection cell 707 is divided into the transparent pond 7073 of many groups, the transparent pond 7073 of pond body 7071 interior many groups is around axle 7072 circle distribution, ultraviolet light has different testing results to the transparent pond 7073 of difference, transparent pond 7073 is the water quality that detects the various process water treatment that obtains by standard C OD detector, the uv transmittance data-storing in different transparent ponds is in database, to comparing when the light transmittance of pre-treatment water and the data of standard water detection cell 707, can obtain the COD detected value of correspondence.

Controller 12 is aggregate circuits of the collection signal detection that is made of a Programmable Logic Controller 1203, valve control, transfer of data.Controller 12 first embodiment as shown in Figure 5, Programmable Logic Controller 1203 is connected with keyboard 1204, display 1202, the first motor-drive circuit 1209, the second motor-drive circuit 1210, processes water detection photoelectric tube amplifying circuit 1207, standard water detection photoelectric tube amplifying circuit 1208 and valve control 1206, drive the first motor-drive circuit 1209 and the second motor-drive circuit 1210 by control, make the position that filtering net and transparent pond 7073 are in to be needed.The signal that detects photoelectric tube amplifying circuit 1207, standard water detection photoelectric tube amplifying circuit 1208 to processing water is simultaneously processed, and the result is sent to master-control room by COM1 1201.

The power supply 1205 of controller 12 artificially cuts off to prevent electric power system with the adapted power supply.

Controller 12 is aggregate circuits of the collection signal detection that is made of a Programmable Logic Controller 1203, valve control, transfer of data.Controller 12 second embodiment are shown in Fig. 6, and it and embodiment 1 Fig. 5 difference have a flow detection unit 1211, and the digital stream scale is connected on the exit of sewage 1.The flow that the digital stream scale detects sends to master-control room in real time.

Controller 12 is aggregate circuits of the collection signal detection that is made of a Programmable Logic Controller 1203, valve control, transfer of data.Controller 12 the 3rd embodiment is shown in Fig. 7, and it and embodiment 1 Fig. 5 and embodiment 2 Fig. 6 differences have a gsm communication module 1212, and the COD testing result sends to master-control room in real time by gsm communication module 1212, finishes long-range real-time detection.

The sewage treatment process that the prime sewage disposal device adopts divides three grades: coagulation: by mechanical treatment, such as grid, precipitation or air supporting, remove contained stone, sandstone and fat, grease etc. in the sewage.Two stage treatment: biological treatment, the pollutant in the sewage is degraded under the effect of microorganism and is converted into mud.Tertiary treatment: the advanced treating of sewage, it comprises nutraceutical removal and by chlorination, ultra-violet radiation or ozone technology sewage is carried out disinfection.May be according to the target of processing and water quality different, the sewage disposal process that has not is to comprise above-mentioned all processes.

Claims (3)

1. the filter that the COD on-line measurement is used in the sewage disposal, it is characterized in that: filter (8) is the type rotary shaft structure, screen pack (803) in the filter (8) is divided into four groups, along axle (801) circle distribution, axle (801) rotates, water after prime sewage disposal device (2) is processed filters by screen pack (803), and the timesharing on four groups of screen packs of the water after the processing is passed through.

2. the filter that the COD on-line measurement is used in the sewage disposal according to claim 1 is characterized in that: described screen pack (803) is convenient for changing and scavenger precipitation sediment on the net for the releasable structure.

3. the filter that the COD on-line measurement is used in the sewage disposal according to claim 1, it is characterized in that: each group of described four groups of screen packs sinks in the filter cylinder (802), is sealed by seal groove (804) between the screen pack.

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