CN115465952B - Method for controlling sludge discharge amount by using sludge load, sewage treatment station and computer readable storage medium - Google Patents
Method for controlling sludge discharge amount by using sludge load, sewage treatment station and computer readable storage medium Download PDFInfo
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- 239000010802 sludge Substances 0.000 title claims abstract description 253
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000010865 sewage Substances 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 79
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- 230000001186 cumulative effect Effects 0.000 claims 1
- 238000013461 design Methods 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 230000002354 daily effect Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000035755 proliferation Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
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- 230000004060 metabolic process Effects 0.000 description 1
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- 244000005700 microbiome Species 0.000 description 1
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- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000036284 oxygen consumption Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
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- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F2209/00—Controlling or monitoring parameters in water treatment
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- C02F2209/00—Controlling or monitoring parameters in water treatment
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention discloses a method for controlling sludge discharge amount by using sludge load, a sewage treatment station and a computer readable storage medium, wherein the method comprises the steps of obtaining fixed parameters (sludge load, initial sludge discharge period, effective volume of a reactor and sludge age) of system sludge discharge amount; when the initial sludge discharge period is reached, acquiring independent variable parameters (operation temperature, water inflow concentration and water outflow concentration) of the sludge discharge amount of the system; calculating the theoretical sludge concentration X0 in the reactor according to the fixed parameter and the independent variable parameter; obtaining the actually measured sludge concentration X in a reaction tank measured by a sludge concentration meter; when the measured sludge concentration X is (0, 110% X0), adjusting the sludge discharge period to be Tp=Tp+N, and continuing to time; when the measured sludge concentration X is 110% X0 and 130% X0, discharging sludge with the sludge discharge amount of V/thetac, and timing again after the discharge is finished; when the measured sludge concentration X is (130% of X0, ++ infinity), discharging the sludge with the sludge discharge amount of 20% of X0 XV/X, and re-timing after discharging; the above steps are repeatedly performed. The invention can improve the accuracy of the mud discharge amount.
Description
Technical Field
The present invention relates to sewage treatment, and more particularly, to a method of controlling sludge discharge amount using sludge load, a sewage treatment station, and a computer readable storage medium.
Background
According to the definition of the surplus sludge, a calculation expression of the surplus sludge amount is given in the municipal sewage design specification formulated by the german drainage technology society (ATV).
Xwt＝(Y 1 +Kdθc)Q(BODi-B0Do)+f P Q(SSi-SSo)
The sludge is mainly composed of two parts, namely sludge proliferation generated by degrading organic matters BOD and deposition of non-degradable and inert suspended solids in the inlet water. Wherein:
xwt, the mass of excess sludge produced by the system daily, kgMLSS/d;
Y 1 sludge proliferation rate, i.e. the mass of degradable sludge synthesized by 1kgBOD per metabolism of microorganism, kgMLVSSkg;
kd, the rate of oxidation of the sludge itself, also known as the sludge attenuation coefficient, d -1 ；
θc, sludge age (biosolids mean residence time), d;
q, sewage flow, m 3 /d；
BOD i ，BOD 0 BOD concentration, kgBOD/m of organic matters in inlet water and outlet water 3 ；
Fp, the non-biodegradable and inert fraction comprising a percentage of SSi;
SSi，SS 0 suspended solid SS concentration in water inlet and outlet, kgSS/m 3 。
The above formula involves up to 10 parameters and the parameter value Y 1 The Kd, thetac and Fp ranges are larger, the parameter ranges are larger under different water quality conditions, and the rationality of the values depends on the experience and level of designers. The formula is therefore less applicable to the actual project of excess sludge discharge.
Method for calculating residual sludge amount commonly used in existing sewage treatmentIn the formula, the volume V of the reactor and the sludge age thetac are known, so that the residual sludge quantity and the sludge concentration in the reactor are in a linear relation, and the formula is suitable for large and medium-sized urban sewage plants with relatively stable water quality and water quantity, but is easy to operate by mistake under the condition of relatively large water quality and water quantity fluctuation, and causes leachate operation accidents under the condition that the fluctuation of water quality and water quantity is relatively large like a leachate station is relatively different with the season and garbage collection and transportation condition.
When the water quality and the water quantity of the incoming water are increased, sludge is discharged in the reaction tank according to the established sludge age design, so that the load of the sludge is increased, and the impact load in the reactor is increased by the operation of sludge discharge.
When the water quantity gradually decreases, the originally designed sludge discharge amount is still discharged according to the sludge concentration in the reaction tank, so that the sludge in the reaction tank is excessive, the food-to-micro ratio (F/M) of the sludge is reduced, the oxygen consumption of the respiration of the excessive sludge is larger than that required for decomposing organic matters, but the total oxygen demand is unchanged, the oxygen utilization rate is reduced, and the waste of power is formed.
Disclosure of Invention
In order to solve the problems, the invention provides a method for controlling the sludge discharge amount by using the sludge load, a sewage treatment station and a computer readable storage medium, which can improve the accuracy of the sludge discharge amount.
The invention adopts the following technical scheme.
A method for controlling sludge discharge using sludge load, comprising:
s1: the water quality sludge load Ls, the initial sludge discharge period Tp of the sludge, the effective volume V of the reactor and the sludge age thetac are obtained and used as fixed parameters of the system sludge discharge amount.
Wherein, the initial sludge discharge period is set to tp=1d, if the 1d sludge discharge amount is too small, it is uneconomical to frequently operate the dewatering system, and the sludge discharge period can be increased according to the design throughput of the dewatering system.
Wherein the sludge load correction period Tj is 20-30 d, and the denitrification load test is carried out again after the time arrives, so as to determine the new sludge load.
Sludge age thetac refers to the ratio of the total amount of activated sludge in the reactor to the amount of sludge discharged daily, which is the average residence time of activated sludge in the reactor, and is therefore sometimes also referred to as the average residence time of biosolids, in d.
The sludge load Ls is the amount of contaminants removed per unit time per unit mass of activated sludge, and the sludge load means in terms of microbial metabolism the F/M ratio, unit kgCOD (BOD/N)/(kgMLSS/d). In different stages of sludge growth, sludge load is different, and purification effect is also different, so that sludge load is one of main parameters of activated sludge process design and operation.
The method for calculating the sludge load comprises the following steps:
ls=f/M (aspect ratio) =qs/(VX)
The molecular formula is:
ls, sludge load, kgCOD (BOD/N)/(kg sludge/d);
q, daily intake, m 3 /d；
S, COD (BOD/N) concentration, mg/L;
v, effective volume of aeration tank, m 3 ；
X, sludge concentration, mg/L.
S2: and after the set sludge discharge period is reached, acquiring the operating temperature T, the water inflow flow Q, the water inflow concentration Cin and the water outflow concentration Cout of the reactor as independent variable parameters of the sludge discharge amount of the system.
S3: and calculating the theoretical sludge concentration X0 in the reactor by using the fixed parameter and the independent variable parameter.
The theoretical sludge concentration X0 has the following calculation formula:
s4: and obtaining the actually measured sludge concentration X in the reaction tank measured by the sludge concentration meter.
S5: and analyzing the data and regulating and controlling a mud discharging strategy.
When the measured sludge concentration X is at (0, 110% X0), the sludge discharge period is adjusted to tp=tp+1d, and the timing is continued.
When the measured sludge concentration X is 110% X0 and 130% X0, the sludge is discharged by the sludge discharge amount V/thetac, and timing is performed again after the sludge is discharged;
when the measured sludge concentration X is at (130% X0, + -infinity) by the amount of discharged mudDischarging mud, and timing again after the mud is discharged;
s6: steps S2-S5 are repeatedly performed.
The sludge concentration in the reaction tank can be continuously adapted and adjusted along with the change of the inflow water flow and the concentration through the sludge discharge amount of the reaction tank. The predetermined sludge load in the reaction tank is ensured, so that the sludge is in a logarithmic growth stage, the activity of the sludge is improved, and the pollutant removal effect in the reactor is ensured.
Further, the measured sludge concentration X was set at (0, 110% X0) for a long period of time, and when the actual Tp was greater than the set threshold value, it was checked whether or not there was abnormality in the activated sludge in the reactor.
Further, the initial sludge discharge period Tp is 1d, the Tp is set to be 7d, and when the measured sludge concentration X is continuously 7d (0, 110% X0), an alarm is given through the system, and an operator is reminded to check whether the activated sludge in the reactor is abnormal or not.
Further, in step S2, the inflow rate Q, the inflow concentration Cin, and the outflow concentration Cout are the current day integrated flow rate.
Further, in step S2, the inflow water flow rate Q, inflow water concentration Cin, and outflow water concentration Cout are the average value of the daily flow rate data of the previous 7 to 10 d.
Further, when the sludge load correction period Tj is reached, the load test is performed again to determine a new sludge load Ls.
The leachate water quantity and water quality of a leachate treatment station of the incineration plant show larger fluctuation along with seasons, and under the condition of controlling the sludge age in the traditional method, the residual sludge discharge quantity cannot change along with the water quantity, the water quality and the temperature, so that the sludge of the reactor cannot adapt to the fluctuation of projects well. The invention (1) provides a method (2) for automatically controlling the sludge discharge amount of a percolate treatment station by utilizing the sludge load, which realizes accurate and automatic control of the residual sludge discharge amount of an AO pool of the percolate station and ensures that the sludge load of a reaction pool is at a stable and efficient level.
A wastewater treatment station, comprising:
the reactor is used for treating sewage and generating sludge;
a sludge pump connected with the reactor and used for discharging sludge in the reactor;
the sewage treatment station further comprises:
the monitoring part is used for detecting the running temperature T, the water inflow quantity Q, the water inflow concentration Cin, the water outflow concentration Cout and the sludge discharge quantity of the sludge discharge pump of the reactor;
the processor is in communication connection with the sludge pump and the monitoring piece and is used for executing program instructions;
and a memory storing program instructions executable by the processor, the processor invoking the program instructions to perform a method of controlling a sludge discharge amount using a sludge load.
A computer readable storage medium for storing computer instructions that, when executed on an electronic device, cause the electronic device to utilize a sludge load to control a method of sludge discharge.
Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
(1) The fixed parameter module has less data and high reliability. The volume V of the reactor can be determined after the project construction is completed, and the data is easy to obtain; the sludge load Ls can be obtained by using project design books, or reference data or project water quality experiments, and the reliability of the parameters of the sludge load is high.
(2) The data of the variable parameter module such as the water inlet temperature T, the water inlet flow Q and the pollutant water inlet and outlet concentration can be grasped through an on-line instrument and on-line detection equipment, and the automation degree is high.
(3) The water inlet temperature T, the water inlet flow Q and the pollutant water inlet and outlet concentration are subjected to feedback regulation, so that the accuracy of the sludge discharge amount is greatly improved, and the artificial misoperation probability of sludge discharge is greatly reduced.
Drawings
FIG. 1 is a flow chart of a method for controlling sludge discharge using sludge load according to an embodiment of the present invention.
Detailed Description
The invention is further described below in connection with specific embodiments and the accompanying drawings.
Referring to fig. 1, an embodiment of the present invention provides a method for controlling sludge discharge by using sludge load, including:
s1: acquiring the sludge load Ls of water quality, the sludge discharge period Tp of sludge, the effective volume V of a reactor and the sludge age thetac as fixed parameters of the sludge discharge amount of a system;
s2: when the set sludge discharge period is reached, acquiring the running temperature T, the water inflow flow Q, the water inflow concentration Cin and the water outflow concentration Cout of the reactor as independent variable parameters of the sludge discharge amount of the system;
s3: calculating the theoretical sludge concentration X0 in the reactor according to the fixed parameter and the independent variable parameter;
s4: obtaining the actually measured sludge concentration X in a reaction tank measured by a sludge concentration meter;
s5: analyzing the data and regulating and controlling a mud discharging strategy:
case 1: when the measured sludge concentration X is (0, 110% X0), adjusting the sludge discharge period to be Tp=Tp+N, and continuing to time;
case 2: when the measured sludge concentration X is 110% X0 and 130% X0, the sludge is discharged in a manner that the sludge discharge amount is V/thetac, and timing is repeated after the sludge is discharged;
the sludge discharge Vp is calculated by the following method:
excess sludge amount Xwt =vx/θc; sludge discharge vp= Xwt/x=v/θc.
Case 3: when the measured sludge concentration X is at (130% X0, + -infinity) by the amount of discharged mudDischarging mud, and timing again after the mud is discharged;
the sludge discharge Vp is calculated by the following method:
the residual sludge content is 20% X0V; sludge discharge vp= Xwt/x=20%x0×v/X.
S6: steps S2-S5 are repeatedly performed.
Further, the theoretical sludge concentration X0 has the following calculation formula:
further, when the measured sludge concentration X is continuously at (0, 110% X0) a plurality of times, the sludge discharge period is adjusted to tp=tp+1, and the time counting is continued.
Further, after repeated operations, the system alarms when tp=7, and checks whether the activated sludge in the reactor is abnormal or not.
Further, in step S2, the inflow rate Q, the inflow concentration Cin, and the outflow concentration Cout are the current day integrated flow rate.
Further, in step S2, the inflow water flow rate Q, inflow water concentration Cin, and outflow water concentration Cout are the average value of the daily flow rate data of the previous 7 to 10 d.
Further, when the sludge load correction period Tj is reached, the load test is performed again to determine a new sludge load Ls, wherein Tj is preferably 20 to 30d.
A wastewater treatment station, comprising:
the reactor is used for treating sewage and generating sludge;
a sludge pump connected with the reactor and used for discharging sludge in the reactor;
the sewage treatment station further comprises:
the monitoring part is used for detecting the running temperature T, the water inflow quantity Q, the water inflow concentration Cin, the water outflow concentration Cout and the sludge discharge quantity of the sludge discharge pump of the reactor;
the processor is in communication connection with the sludge pump and the monitoring piece and is used for executing program instructions;
and a memory storing program instructions executable by the processor, the processor invoking the program instructions to perform a method of controlling a sludge discharge amount using a sludge load.
The reactor can be of an industry general design, such as a biological treatment device of wastewater with high sulfate and high ammonia nitrogen content disclosed in CN112723546A, and a high ammonia nitrogen wastewater treatment system disclosed in CN111908618A is not described herein.
A computer readable storage medium for storing computer instructions that, when executed on an electronic device, cause the electronic device to utilize a sludge load to control a method of sludge discharge.
The invention is illustrated below with reference to specific working examples:
the design treatment water quantity of the AO biochemical system of the percolate project is 200m 3 Volume of AO reaction tank of 1800m 3 (9 m.25 m.8 m) determining that the sludge load is 0.032kgN/kgMLSS/d according to a design task book, and discharging sludge every day according to project presets, wherein the sludge age is 20 days.
When the water quality of the project is basically unchanged and the water quantity is increased, according to the sludge discharging method provided by the invention, the sludge concentration in the reactor does not reach the theoretical sludge concentration, the sludge is not discharged in the first 4 days, the reactor adapts to the increased treatment capacity through the increase of the sludge concentration, the sludge concentration in the reactor reaches the sludge discharging condition due to the reduction of the water quantity in the 5 th to 8 th days, and the sludge is discharged according to the sludge discharging calculation formula of different situations, wherein the specific data are shown in the following table 1. According to the table, the actual sludge concentration in the reactor can be close to the curve of the theoretical sludge concentration under the condition of fluctuation of water quantity conditions, so that the efficient operation of the sludge in the reactor is realized.
TABLE 1 sludge discharge from reactor with variable throughput Q and substantially unchanged total nitrogen in feed
When the project water quantity basically does not change, and the water quality of inlet and outlet water fluctuates, according to the sludge discharging method provided by the invention, the theoretical required sludge concentration of the reactor is correspondingly increased in days 1-6 due to the increase of the inlet water concentration, the sludge concentration in the reactor does not reach the theoretical sludge concentration after actual measurement, the sludge is not discharged in the first 6 days, the reactor adapts to the increased treatment capacity through the increase of the sludge concentration, and the sludge pump is started to discharge sludge in the system after the sludge concentration in the reactor reaches the sludge discharging condition in days 6-8 due to the decrease of the total nitrogen concentration of the inlet water, and specific data are shown in the following table 2. According to the table, the actual sludge concentration in the reactor can be close to theoretical sludge concentration data under the condition of fluctuation of water quality conditions, so that efficient operation of sludge in the reactor is realized.
TABLE 2 sludge discharge from reactor under conditions of varying CIN with substantially unchanged throughput Q of the feed water
As can be seen from Table 3, when the water quality and the water quantity of the project are fluctuated at the same time, the sludge concentration in the reactor is synchronously adjusted according to the change of the theoretical sludge concentration so as to adapt to the fluctuation of the water quality and the water quantity of the percolate station. According to the table, the actual sludge concentration in the reactor can be close to theoretical sludge concentration data under the condition of double fluctuation of water quantity and water quality conditions, so that the efficient operation of the sludge in the reactor is realized.
TABLE 3 sludge discharge from reactor under simultaneous fluctuation of throughput Q and total nitrogen in feed water Cin
According to the three different water quality and water quantity fluctuation conditions, the method for controlling the sludge discharge amount by using the sludge load can automatically control the stability of the sludge concentration in the reactor, and ensure the good operation of the reactor.
The examples of the present invention are merely for describing the preferred embodiments of the present invention, and are not intended to limit the spirit and scope of the present invention, and those skilled in the art should make various changes and modifications to the technical solution of the present invention without departing from the spirit of the present invention.
Claims (8)
1. A method for controlling sludge discharge by using sludge load, comprising:
s1: acquiring the sludge load Ls, the initial sludge discharge period Tp, the effective volume V of the reactor and the sludge age thetac of the water quality as fixed parameters of the sludge discharge amount of the system;
s2: when the set sludge discharge period is reached, acquiring the running temperature T, the water inflow Q, the water inflow concentration Cin and the water outflow concentration Cout of the reactor as independent variable parameters of the sludge discharge amount of the system;
s3: calculating the theoretical sludge concentration X0 in the reactor by using fixed parameters and independent variable parameters, wherein the theoretical sludge concentration X0 has the following calculation formula:
s4: obtaining the actually measured sludge concentration X in a reaction tank measured by a sludge concentration meter;
s5: analyzing the data and regulating and controlling a mud discharging strategy:
when the measured sludge concentration X is (0, 110% X0), adjusting the sludge discharge period to be Tp=Tp+1d, and continuing to time;
when the measured sludge concentration X is 110% X0 and 130% X0, the sludge is discharged by the sludge discharge amount V/thetac, and timing is performed again after the sludge is discharged;
when the measured sludge concentration X is at (130% X0, + -infinity) by the amount of discharged mudDischarging mud, and timing again after the mud is discharged;
s6: steps S2-S5 are repeatedly performed.
2. The method for controlling sludge discharge by sludge load according to claim 1, wherein the measured sludge concentration X is (0, 110% X0) for a long period of time, and when the actual Tp is greater than a set threshold, an alarm is given by the system, and an operator is reminded to check whether the activated sludge in the reactor is abnormal.
3. The method for controlling sludge discharge by sludge load according to claim 2, wherein the initial sludge discharge period Tp is 1d, tp is set to a threshold value of 7d, and when the measured sludge concentration X is continuously 7d at (0, 110% X0), an alarm is given by the system and an operator is reminded to check whether the activated sludge in the reactor is abnormal.
4. The method for controlling sludge discharge amount by utilizing sludge load as claimed in claim 1, wherein in step S2, the inflow water flow Q is a cumulative flow on the same day.
5. The method for controlling sludge discharge amount by using sludge load as claimed in claim 1, wherein the inflow water flow Q is an average value of the daily flow data of the previous 7 to 10d in step S2.
6. The method for controlling sludge discharge amount by using sludge load as claimed in claim 1, wherein the load test is performed again after the time reaches the sludge load correction period Tj, to determine the new sludge load Ls.
7. A wastewater treatment station, comprising:
the reactor is used for treating sewage and generating sludge;
a sludge pump connected with the reactor and used for discharging sludge in the reactor;
the sewage treatment station is characterized by further comprising:
the monitoring part is used for detecting the running temperature T, the water inflow quantity Q, the water inflow concentration Cin, the water outflow concentration Cout and the sludge discharge quantity of the sludge discharge pump of the reactor;
the processor is in communication connection with the sludge pump and the monitoring piece and is used for executing program instructions;
a memory storing program instructions executable by the processor, the processor invoking the program instructions to perform the method of controlling sludge discharge using sludge load as claimed in any of claims 1-6.
8. A computer readable storage medium for storing computer instructions that, when executed on an electronic device, cause the electronic device to perform the method of claims 1-6
A method of controlling sludge discharge using a sludge load as claimed in any one of the preceding claims.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211198312.9A CN115465952B (en) | 2022-09-29 | 2022-09-29 | Method for controlling sludge discharge amount by using sludge load, sewage treatment station and computer readable storage medium |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211198312.9A CN115465952B (en) | 2022-09-29 | 2022-09-29 | Method for controlling sludge discharge amount by using sludge load, sewage treatment station and computer readable storage medium |
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| Publication Number | Publication Date |
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| CN115465952A CN115465952A (en) | 2022-12-13 |
| CN115465952B true CN115465952B (en) | 2023-11-14 |
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| CN202211198312.9A Active CN115465952B (en) | 2022-09-29 | 2022-09-29 | Method for controlling sludge discharge amount by using sludge load, sewage treatment station and computer readable storage medium |
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Citations (7)
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| JPS5547190A (en) * | 1978-09-29 | 1980-04-03 | Mitsubishi Electric Corp | Sludge extraction flow rate controller in active sludge treatment process |
| JPS55137096A (en) * | 1979-04-13 | 1980-10-25 | Toshiba Corp | Controlling apparatus for withdrawn sludge flow amount from final precipitating pond |
| JPH01135599A (en) * | 1987-11-24 | 1989-05-29 | Meidensha Corp | Sludge discharge controller for sedimentation tank |
| JPH04166295A (en) * | 1990-10-29 | 1992-06-12 | Nippon Gesuidou Jigyodan | Activated sludge process by srt control |
| CN102087523A (en) * | 2009-12-08 | 2011-06-08 | 机科发展科技股份有限公司 | Automatic control system and method of sludge age in biological nitrogen and phosphorus removal |
| CN109836025A (en) * | 2019-03-06 | 2019-06-04 | 中原环保股份有限公司 | A kind of accurate sludge drainage system of sewage treatment and method |
| CN114323120A (en) * | 2021-12-01 | 2022-04-12 | 北控水务(中国)投资有限公司 | Sludge discharge amount measuring method, sludge discharge amount controlling method, sludge discharge amount processing system, sludge discharge amount processing equipment and sludge discharge amount processing medium |
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2022
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5547190A (en) * | 1978-09-29 | 1980-04-03 | Mitsubishi Electric Corp | Sludge extraction flow rate controller in active sludge treatment process |
| JPS55137096A (en) * | 1979-04-13 | 1980-10-25 | Toshiba Corp | Controlling apparatus for withdrawn sludge flow amount from final precipitating pond |
| JPH01135599A (en) * | 1987-11-24 | 1989-05-29 | Meidensha Corp | Sludge discharge controller for sedimentation tank |
| JPH04166295A (en) * | 1990-10-29 | 1992-06-12 | Nippon Gesuidou Jigyodan | Activated sludge process by srt control |
| CN102087523A (en) * | 2009-12-08 | 2011-06-08 | 机科发展科技股份有限公司 | Automatic control system and method of sludge age in biological nitrogen and phosphorus removal |
| CN109836025A (en) * | 2019-03-06 | 2019-06-04 | 中原环保股份有限公司 | A kind of accurate sludge drainage system of sewage treatment and method |
| CN114323120A (en) * | 2021-12-01 | 2022-04-12 | 北控水务(中国)投资有限公司 | Sludge discharge amount measuring method, sludge discharge amount controlling method, sludge discharge amount processing system, sludge discharge amount processing equipment and sludge discharge amount processing medium |
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