CN220867200U - Carbon source adding early warning and monitoring system for CASS pool - Google Patents
Carbon source adding early warning and monitoring system for CASS pool Download PDFInfo
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- CN220867200U CN220867200U CN202322667133.1U CN202322667133U CN220867200U CN 220867200 U CN220867200 U CN 220867200U CN 202322667133 U CN202322667133 U CN 202322667133U CN 220867200 U CN220867200 U CN 220867200U
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- carbon source
- cass
- pool
- cass pool
- source adding
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- 208000014451 palmoplantar keratoderma and congenital alopecia 2 Diseases 0.000 title claims abstract description 75
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 55
- 238000012544 monitoring process Methods 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 56
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000003756 stirring Methods 0.000 claims description 15
- 238000005273 aeration Methods 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 239000010865 sewage Substances 0.000 abstract description 18
- 239000010802 sludge Substances 0.000 description 7
- 238000005276 aerator Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- 238000010992 reflux Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 239000006228 supernatant Substances 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The utility model relates to the technical field of sewage treatment, and discloses a carbon source adding early warning and monitoring system for a CASS pool, which comprises a controller, the CASS pool and a carbon source adding device, wherein the carbon source adding device is connected with a CASS pool pipeline, and a metering pump is arranged on the connecting pipeline; the CASS pool is provided with a water inlet pipe, a COD detector is arranged on the water inlet pipe, a nitrate nitrogen on-line instrument is arranged in the CASS pool, and the metering pump, the nitrate nitrogen on-line instrument and the COD detector are all electrically connected with the controller. According to the scheme, the fact that part of organic matters in the COD value in the inflow water of the CASS pool can be used as a carbon source is considered, the nitrate nitrogen value in the CASS pool and the COD value in the inflow water of the CASS pool are used as comprehensive determining factors of the carbon source adding amount, the carbon source adding amount of the CASS pool is subjected to combined regulation, and the carbon source adding amount of the CASS pool is effectively and accurately controlled.
Description
Technical Field
The utility model relates to the technical field of sewage treatment, in particular to a carbon source adding early warning and monitoring system for a CASS pool.
Background
The CASS pool comprises a biological selection area, an anoxic area and a main reaction area, wherein the main reaction area is provided with equipment such as an aeration device, a decanter, an underwater stirrer and the like; a sludge return pipe is arranged between the main reaction zone and the biological selection zone. The CASS tank integrates aeration and sedimentation functions, water inlet aeration, sedimentation and drainage are sequentially carried out in the same tank, and the sewage treatment efficiency is improved through periodic circulation.
In order to ensure the normal operation of denitrification reaction in the CASS pool, so that sewage outlet meets the index requirement, most sewage treatment plants adopt a mode of adding carbon sources to improve the denitrification effect. In the prior art CN111072140B, an online calculation method of carbon source addition based on denitrification process of an anoxic tank is disclosed, and the carbon source addition is calculated according to the inflow water of the anoxic tank and nitrate nitrogen in the anoxic tank. However, the adding amount of the carbon source in the prior art only considers the effluent of the anoxic tank or the nitrate nitrogen content in the anoxic tank, and the adding amount of the carbon source is simply determined according to the change of the nitrate nitrogen content, so that the coverage is incomplete, and the added carbon source is excessive, thereby not only increasing the cost of the carbon source, but also prolonging the sewage treatment time in the anoxic tank, and even possibly causing the COD of the effluent of the CASS tank to be higher, and further reducing the sewage treatment effect and efficiency.
Disclosure of utility model
The utility model aims to provide a carbon source adding early warning monitoring system for a CASS pool, which aims to solve the technical problems that the adding amount of a carbon source is determined by only considering the effluent of an anoxic pool (or the CASS pool) or the nitrate nitrogen content in the anoxic pool in the prior art, so that the added carbon source is excessive, the cost of the carbon source is increased, the sewage treatment time in the anoxic pool is prolonged, and the COD of effluent of the CASS pool is even higher.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a carbon source adding early warning monitoring system for a CASS pool comprises a controller, the CASS pool and a carbon source adding device, wherein the carbon source adding device is connected with a CASS pool pipeline, and a metering pump is arranged on the connecting pipeline; the CASS pool is provided with a water inlet pipe, a COD detector is arranged on the water inlet pipe, a nitrate nitrogen on-line instrument is arranged in the CASS pool, and the metering pump, the nitrate nitrogen on-line instrument and the COD detector are all electrically connected with the controller.
The principle of the scheme is as follows:
The method comprises the steps that a nitrate nitrogen threshold value, a COD threshold value and a carbon source adding amount corresponding to the COD threshold value are preset in advance in a controller, in the running process of a CASS pool, a COD detector detects the COD value of water entering the CASS pool in real time and forms a COD signal to be transmitted to the controller, a nitrate nitrogen on-line instrument detects the nitrate nitrogen value of sewage in the CASS pool in real time and forms a nitrate nitrogen signal to be transmitted to the controller, after the controller receives the COD signal and the nitrate nitrogen signal, the controller compares the COD signal and the nitrate nitrogen signal with the preset threshold value according to the comparison of the COD signal and the nitrate nitrogen signal and the preset threshold value, and after the threshold value is reached, the valve opening of a metering pump is controlled according to the preset carbon source adding amount, so that the accurate control of the carbon source adding amount is realized.
The advantage of this scheme is:
1. Compared with the prior art, when only the nitrate nitrogen value in the anoxic tank and the nitrate nitrogen value in the anoxic tank are considered to regulate the carbon source adding amount in the anoxic tank, so that the carbon source adding amount in the anoxic tank is too high to waste the cost, the method considers that a part of organic matters in the COD value in the CASS tank can be used as the carbon source, and adopts the nitrate nitrogen value in the CASS tank and the COD value in the CASS tank as comprehensive determining factors of the carbon source adding amount to regulate the carbon source adding amount in the CASS tank in a combined manner, thereby effectively and accurately controlling the carbon source adding amount in the CASS tank.
2. According to the scheme, the carbon source adding amount of the CASS pool is accurately controlled, waste caused by excessive carbon source adding is effectively avoided, the sewage treatment rhythm in the CASS pool can be disturbed due to excessive carbon source adding, the sewage treatment time is prolonged, and even the COD of effluent of the CASS pool is higher, so that the sewage treatment effect and efficiency are reduced.
Preferably, an aeration device and a stirring device are arranged in the CASS pool, and driving parts of the aeration device and the stirring device are electrically connected with the controller.
The beneficial effects are that: by adopting the arrangement, the aeration device and the stirring device are controlled to start and stop by the controller according to the operation rule of the CASS pool, so that the treatment of the CASS pool on sewage is realized.
Preferably, the side wall of the water outlet end of the CASS pool is provided with a decanting device, a high-level sensor and a low-level sensor, the installation position of the high-level sensor is higher than that of the decanting device, the installation position of the low-level sensor is lower than that of the decanting device, and a driving part of the decanting device, the high-level sensor and the low-level sensor are all electrically connected with a controller.
The beneficial effects are that: according to the scheme, the high-level sensor and the low-level sensor are arranged, so that a water level signal is formed by detecting the water level in the CASS pool and is transmitted to the controller, and the controller controls the driving part of the decanting device to start or stop or adjusts the power of the driving part of the decanting device according to the water level signal, so that the supernatant liquid precipitated in the CASS pool is discharged after decanting.
Preferably, the upstream of the water inlet pipe is connected with a total water inlet pool.
The beneficial effects are that: by adopting the arrangement, the main water inlet tank is used as a water storage tank, so that continuous water inlet into the CASS tank is facilitated, and continuous sewage treatment is realized.
Drawings
Fig. 1 is a schematic structural diagram of a carbon source adding early warning and monitoring system for a CASS pool in embodiment 1 of the present utility model.
Detailed Description
The following is a further detailed description of the embodiments:
Reference numerals in the drawings of the specification include: the device comprises a CASS pool 1, a water inlet pipe 11, a COD detector 111, a nitrate nitrogen on-line instrument 12, an aerator 13, a stirrer 14, a decanter 15, a high-level sensor 16, a low-level sensor 17, a return pipe 18, a water outlet pipe 19, a carbon source storage tank 2, a metering pump 21 and a total water inlet pool 3.
Example 1
This embodiment is basically as shown in fig. 1: a carbon source adds early warning monitoring system for CASS pond, includes controller, CASS pond 1 and carbon source throw the device, and carbon source throw the device and CASS pond 1 pipe connection is equipped with measuring pump 21 on the connecting tube.
The CASS pool 1 is provided with a water inlet pipe 11, a sludge return pipe 18, an aeration device, a stirring device, a water decanting device, a high-level sensor 16 and a low-level sensor 17, wherein the installation position of the high-level sensor 16 is higher than the water decanting device, and the installation position of the low-level sensor 17 is lower than the water decanting device; as a reference, the decanter 15 is a decanter device, and the driving part of the decanter 15 is a decanter motor; the decanter 15 is connected with a water outlet pipe 19. The upstream of the water inlet pipe 11 is connected with a total water inlet CASS pool 13, a CODCOD detector 111 is arranged on the water inlet pipe 11, and a nitrate nitrogen on-line instrument 12 is arranged in the CASS pool 1. In addition, the agitator 14 is located above the outlet of the aerator 13, and as a reference, the aerator is the aerator 13, and the driving part of the aerator 13 is an electric pump; the stirring device is a stirrer 14, and a driving part of the stirrer 14 is a stirring motor. A return pump is arranged on the sludge return pipe 18.
In the scheme, a metering pump 21, a reflux pump, a nitrate nitrogen on-line instrument 12, CODCOD detector 111, an electric pump, a stirring motor, a decanting motor, a high-level sensor 16 and a low-level sensor 17 are all electrically connected with a controller. As a reference, the controller is a PLC controller, in the scheme, the metering pump 21, the reflux pump, the nitrate nitrogen on-line instrument 12, the CODCOD detector 111, the electric pump, the stirring motor, the decanting motor, the high-level sensor 16, the low-level sensor 17 and the PLC controller are all in the prior art, and the model can be selected according to the needs.
The specific implementation mode is as follows:
According to the scheme, the CASS tank 1 periodically and circularly operates according to the sequence of water inlet aeration, precipitation, drainage and sludge backflow, and continuous water inlet and stage drainage are realized, so that the continuous treatment of the CASS tank 1 on sewage is realized. The control flow of other equipment of the CASS pool 1 is preset in the PLC, for example, the PLC starts an electric pump and a stirring motor in an aeration stage, so that the aerator aerates the CASS pool 1 and the stirrer 14 stirs the sludge-sewage mixed solution in the CASS pool 1; in the precipitation stage, the electric pump and the stirring motor are turned off, and supernatant and lower sludge are formed by precipitation. After the high-level sensor 16 detects the water level to form a high water level signal, the high water level signal is transmitted to the PLC, the PLC judges that the precipitation is finished after receiving the high water level signal, and then the water decanting motor is started, so that the water decanting device 15 discharges supernatant along the water decanting device 15 and the water outlet pipe 19, a reflux pump is started at the moment, the bottom sludge is refluxed to the water inlet end of the CASS pool 1, and then the sewage is treated along with the inflow of the water in the CASS pool 1. When the water level drops to the low level detected by the low level sensor 17, the low level sensor 17 forms a low water level signal and transmits the low water level signal to the PLC, the PLC immediately turns off the reflux pump and the decanting motor, simultaneously starts the electric pump and the stirring motor, restarts aeration and stirring, accelerates the mixing of the water and the sludge in the CCASS pool, and improves the sewage treatment efficiency.
In the whole process, CODCOD detector 111 continuously detects COD of the inlet water and forms a COD signal to be sent to the PLC, and nitrate nitrogen on-line instrument 12 continuously detects nitrate nitrogen in CASS pool 1 and forms a nitrate nitrogen signal to be sent to the PLC. The PLC is also provided with a nitrate nitrogen threshold value, a COD threshold value and a carbon source adding amount corresponding to the COD threshold value in advance, after receiving the COD signal and the nitrate nitrogen signal, the PLC controls the pumping flow of the metering pump 21 according to the preset carbon source adding amount after the threshold value is reached according to the comparison of the COD signal and the nitrate nitrogen signal and the preset threshold value, so that the accurate control of the carbon source adding amount is realized. Specifically, the preset COD threshold value is 100mg/L, and the nitrate nitrogen threshold value is 15mg/L; when the COD content in the inflow water is less than or equal to 100mg/L, CASS and the nitrate nitrogen content in the CASS pool 1 is less than or equal to 15mg/L, the PLC controller judges that the carbon source demand is large, and the carbon source adding amount is increased, namely the pumping flow of the metering pump 21 is increased, so that the carbon source in the CASS pool 1 is accurately and rapidly regulated; when the COD content is more than 100mg/L, the carbon source adding amount is properly reduced, namely the pumping flow of the metering pump 21 is reduced, and the carbon source in the CASS pool 1 is accurately and rapidly regulated, so that the effluent of the CASS pool 1 reaches the national standard.
The foregoing is merely exemplary of the present utility model, and specific technical solutions and/or features that are well known in the art have not been described in detail herein. It should be noted that, for those skilled in the art, several variations and modifications can be made without departing from the technical solution of the present utility model, and these should also be regarded as the protection scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the practical applicability of the patent. The protection scope of the present utility model is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (4)
1. A carbon source adds early warning monitoring system for CASS pond, its characterized in that: the device comprises a controller, a CASS pool and a carbon source adding device, wherein the carbon source adding device is connected with a CASS pool pipeline, and a metering pump is arranged on the connecting pipeline; the CASS pool is provided with a water inlet pipe, a COD detector is arranged on the water inlet pipe, a nitrate nitrogen on-line instrument is arranged in the CASS pool, and the metering pump, the nitrate nitrogen on-line instrument and the COD detector are all electrically connected with the controller.
2. The carbon source adding early warning and monitoring system for a CASS pool according to claim 1, characterized in that: and an aeration device and a stirring device are arranged in the CASS pool, and driving parts of the aeration device and the stirring device are electrically connected with a controller.
3. The carbon source adding early warning and monitoring system for a CASS pool according to claim 2, characterized in that: the CASS pool is characterized in that a water decanting device, a high-level sensor and a low-level sensor are arranged on the side wall of the water outlet end of the CASS pool, the installation position of the high-level sensor is higher than that of the water decanting device, the installation position of the low-level sensor is lower than that of the water decanting device, and a driving part of the water decanting device, the high-level sensor and the low-level sensor are all electrically connected with a controller.
4. The carbon source adding pre-warning and monitoring system for a CASS pool according to claim 3, wherein: and the upstream of the water inlet pipe is connected with a total water inlet pool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322667133.1U CN220867200U (en) | 2023-09-28 | 2023-09-28 | Carbon source adding early warning and monitoring system for CASS pool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322667133.1U CN220867200U (en) | 2023-09-28 | 2023-09-28 | Carbon source adding early warning and monitoring system for CASS pool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220867200U true CN220867200U (en) | 2024-04-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322667133.1U Active CN220867200U (en) | 2023-09-28 | 2023-09-28 | Carbon source adding early warning and monitoring system for CASS pool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220867200U (en) |
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2023
- 2023-09-28 CN CN202322667133.1U patent/CN220867200U/en active Active
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