CN114702116A - Automatic treatment method and system for wastewater neutralization - Google Patents
Automatic treatment method and system for wastewater neutralization Download PDFInfo
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- CN114702116A CN114702116A CN202210230397.8A CN202210230397A CN114702116A CN 114702116 A CN114702116 A CN 114702116A CN 202210230397 A CN202210230397 A CN 202210230397A CN 114702116 A CN114702116 A CN 114702116A
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- 239000002351 wastewater Substances 0.000 title claims abstract description 235
- 238000006386 neutralization reaction Methods 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 62
- 239000007788 liquid Substances 0.000 claims abstract description 112
- 238000003756 stirring Methods 0.000 claims abstract description 30
- 230000001105 regulatory effect Effects 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 17
- 238000004065 wastewater treatment Methods 0.000 claims abstract description 17
- 239000003513 alkali Substances 0.000 claims description 62
- 239000002253 acid Substances 0.000 claims description 57
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 30
- 239000002585 base Substances 0.000 claims description 21
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 17
- 230000001276 controlling effect Effects 0.000 claims description 11
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 7
- 239000001257 hydrogen Substances 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 3
- 238000003672 processing method Methods 0.000 claims 3
- 238000013517 stratification Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000012267 brine Substances 0.000 description 4
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 4
- 238000002156 mixing Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000010669 acid-base reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000006298 dechlorination reaction Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
Abstract
The invention discloses an automatic treatment method and system for wastewater neutralization, which relate to the field of wastewater neutralization and comprise the following steps: acquiring a real-time liquid level and a real-time pH value of liquid in a wastewater tank in a wastewater treatment process; judging whether the real-time liquid level reaches a preset stirring starting liquid level or not in the process of inputting the wastewater into the wastewater tank, and if so, starting a stirrer arranged in the wastewater tank to stir the wastewater; in-process to the waste water tank input waste water, judge whether real-time liquid level has reached and predetermine the material liquid level that stops, if, stop input waste water, and judge whether real-time PH value is in standard range, if not, then utilize through real-time PH value and real-time liquid level and predetermine the formula and set up the acid-base weight of the regulating valve control input waste water tank on the waste water tank, in order to adjust the PH value of waste water in the waste water tank to standard range, it has solved present acid-base neutralization in-process and has had the layering to lead to the PH measured value of waste water to be inaccurate, thereby make the automatic neutralization problem that is difficult to control.
Description
Technical Field
The invention relates to the field of wastewater neutralization, in particular to an automatic treatment method and an automatic treatment system for wastewater neutralization.
Background
The chlor-alkali industry in China has been developed from the earliest 1930 years for decades, and most of enterprises at present mainly use primary brine, secondary brine, electrolysis, light brine dechlorination, evaporation, chlorine gas liquefaction and vaporization, hydrogen chloride synthesis, wastewater treatment and other production processes when producing the most basic chemical raw materials such as hydrogen, chlorine, caustic soda and the like, wherein the wastewater treatment is an important corollary device for chlor-alkali production, the treatment capacity of a wastewater device is very important for production, if wastewater is not treated for a long time, wastewater (feed) cannot be continuously received, so that the liquid level of a regenerated wastewater pit is too high, the regeneration of a resin tower is stopped, the regeneration period of the resin tower is influenced, the quality of the brine is influenced, and economic losses are brought to the enterprises.
At present, the control of the pH value of the wastewater is always a difficult problem in the aspect of the automatic wastewater treatment, because the acid-base reaction process is a typical nonlinear process, the pH value can be obviously changed when a small amount of the acid-base reaction is added within a critical value range, and the pH value of the wastewater is not accurate due to the fact that wastewater is layered and lagged in the actual acid-base neutralization process, so that the difficulty of automatic control is increased.
Disclosure of Invention
In order to timely and automatically neutralize received wastewater and timely discharge the wastewater, thereby solving the problems that the wastewater cannot be continuously received (fed) due to long-time untreated wastewater so as to influence the quality of saline water, and the pH value of the wastewater is not accurate enough due to layering and lagging in the acid-base neutralization process so as to cause the automatic neutralization to be difficult to control, the invention provides an automatic treatment method for wastewater neutralization, which realizes the automatic treatment of the wastewater by inputting the wastewater into a wastewater tank and discharging the wastewater after the automatic neutralization, and the method comprises the following steps:
s01: acquiring a real-time liquid level and a real-time pH value of liquid in a wastewater tank in a wastewater treatment process;
s02: judging whether the real-time liquid level reaches a preset stirring starting liquid level or not in the process of inputting the wastewater into the wastewater tank, and if so, starting a stirrer arranged in the wastewater tank to stir the wastewater;
s03: in the process of inputting waste water into the waste water tank, whether the real-time liquid level reaches the preset material stopping liquid level or not is judged, if yes, the waste water input is stopped, whether the real-time PH value is in the standard range or not is judged, if not, the acid-base component of the waste water tank is controlled by the aid of the preset formula and the adjusting valve arranged on the waste water tank through the real-time PH value and the real-time liquid level, the PH value of the waste water in the waste water tank is adjusted to the standard range, and the preset material stopping liquid level is higher than the preset stirring starting liquid level.
Further, the preset formula in step S03 includes:
the acid addition calculation formula has the expression as follows:
V(HCL)＝(10PH-14×V×LT_9A701A×1000×36.5)/C1+(X)；
wherein the pH is a real-time pH value of 10PH-14Hydrogen ion concentration (mol/L), V wastewater volume, LT _9A701A real-time liquid level, 1000 volume unit (L), 36.5 hydrochloric acid molar mass, C1In order to preset the hydrochloric acid concentration, X is a preset correction value, V(HCL)Is the value of the acid addition component;
adding alkali to calculate a formula, wherein the formula has the expression as follows:
V(NaOH)＝(10-PH×V×LT_9A701A×1000×40)/C2+(X)；
wherein the pH is a real-time pH value of 10-PHIs the hydroxide ion concentration (mol/L), V is the volume of the wastewater tank, LT _9A701A is the real-time liquid level, 1000 is the volume unit (L), 40 is the molar mass of caustic soda, C2Is a preset alkali concentration, X is a preset correction value, V(NaOH)Is the value of the addition base component.
Further, the regulating valves comprise an alkali regulating valve and an acid regulating valve.
Further, the step S03 specifically includes:
judging whether the real-time pH value is smaller than the lower limit value of the standard range, if so, acquiring an alkali addition component value by utilizing an alkali addition calculation formula according to the real-time pH value and the real-time liquid level, controlling the opening and closing of an alkali addition regulating valve according to the alkali addition component value, and adding alkali with the alkali addition component value into the conventional wastewater tank;
and judging whether the real-time pH value is larger than the upper limit value of the standard range, if so, acquiring an acid adding component value by utilizing an acid adding calculation formula according to the real-time pH value and the real-time liquid level, controlling the opening and closing of an acid adding regulating valve according to the acid adding component value, and adding acid with the acid adding component value into the conventional wastewater tank.
Further, after adding the alkali with the alkali component value into the wastewater tank, the method also comprises the following steps:
and judging whether the real-time pH value in the wastewater tank is always within the standard range within a preset time period, if so, indicating that the neutralization is finished, otherwise, returning to the step S03 to continuously judge whether the real-time pH value is less than the lower limit value of the standard range so as to continuously add alkali for neutralization.
Further, the method comprises the following steps after adding acid with an acid component value into the wastewater tank:
and judging whether the real-time PH value in the wastewater tank is always within the standard range within a preset time period, if so, indicating that the neutralization is finished, otherwise, returning to the step S03 to continuously judge whether the real-time PH value is greater than the upper limit value of the standard range so as to continuously add acid for neutralization.
Further, after the step S03 adjusts the PH of the wastewater in the wastewater tank to be within the standard range, the method further includes:
and discharging the wastewater in the wastewater tank, and stopping the stirrer when the real-time liquid level reaches a preset stirring stop liquid level.
Further, the standard ranges are: [6.8,8.5].
The present invention also provides an automatic treatment system for wastewater neutralization, which realizes automatic treatment of wastewater by inputting wastewater into a wastewater tank and discharging the wastewater after automatic neutralization, the system comprising:
the measuring module is used for acquiring the real-time liquid level and the real-time PH value of the liquid in the waste water tank in the waste water treatment process;
the stirring module is used for judging whether the real-time liquid level reaches a preset stirring starting liquid level or not in the process of inputting the wastewater into the wastewater tank, and if so, starting a stirrer arranged in the wastewater tank to stir the wastewater;
the control module is used for judging whether the real-time liquid level reaches the preset material stopping liquid level or not in the process of inputting wastewater into the wastewater tank, if so, stopping inputting wastewater, judging whether the real-time PH value is in the standard range or not, if not, controlling the acid-base component of the wastewater tank through the real-time PH value and the real-time liquid level by utilizing a preset formula and a regulating valve arranged on the wastewater tank, regulating the PH value of the wastewater in the wastewater tank to the standard range, and enabling the preset material stopping liquid level to be higher than the preset stirring starting liquid level.
Further, the measurement module comprises:
a liquid level meter: the system is used for acquiring the real-time liquid level of liquid in the wastewater tank in the wastewater treatment process;
a pH meter: is used for acquiring the real-time PH value of the liquid in the wastewater tank in the wastewater treatment process.
Compared with the prior art, the invention at least has the following beneficial effects:
(1) the invention sets a stirrer in the wastewater tank, starts the stirrer when the real-time liquid level reaches the preset stirring start liquid level to avoid the stratification of wastewater, stops feeding when the real-time liquid level reaches the preset material stop liquid level in the process of inputting wastewater into the wastewater tank, controls the acid-base component input into the wastewater tank by using the real-time PH value and the real-time liquid level through the preset formula and the regulating valve arranged on the wastewater tank when the real-time PH value is not in the standard range, so as to regulate the PH value of the wastewater in the wastewater tank to be in the standard range, controls the regulating valve in real time through the real-time PH value and the real-time liquid level while avoiding the stratification of wastewater (improving the measurement precision of the real-time PH value), accurately controls the acid-base component input into the wastewater tank, thereby realizing the neutralization of wastewater, and solving the problem that the PH value of the wastewater is not accurate due to the stratification in the prior acid-base neutralization process, thereby making automatic neutralization a difficult control problem;
(2) when the real-time PH value is smaller than the lower limit value of the standard range, the alkali addition component value is obtained by utilizing an alkali addition calculation formula through the real-time PH value and the real-time liquid level, the opening and closing of an alkali addition regulating valve are controlled through the alkali addition component value, and alkali with the alkali addition component value is added into a conventional wastewater tank; when the real-time PH value is larger than the upper limit value of the standard range, the acid adding component value is obtained by utilizing an acid adding calculation formula through the real-time PH value and the real-time liquid level, and the opening and closing of an acid adding regulating valve are controlled through the acid adding component value;
(3) after adding alkali with an alkali component value into the wastewater tank, judging whether the real-time PH value in the wastewater tank is always within a standard range within a preset time period, if not, returning to the step S03 to continuously judge whether the real-time PH value is less than the lower limit value of the standard range so as to continue adding alkali for neutralization; after acid with the acid component value is added into the wastewater tank, whether the real-time pH value in the wastewater tank is always within the standard range in a preset time period is judged, if not, the step S03 is returned to continuously judge whether the real-time pH value is larger than the upper limit value of the standard range so as to continue adding acid for neutralization, and the real-time pH value is monitored and judged all the time in the preset time period (in the preset time period, the real-time pH value is always within the standard range, and neutralization is finished), so that the problem of erroneous judgment caused by inaccurate pH value measurement due to the lag of wastewater in the acid-base neutralization process in the prior art is solved, and the accuracy of neutralization control is further improved;
(4) the automatic treatment system for wastewater neutralization provided by the invention is linked with the automatic start and stop of the stirrer, so that the uniform mixing of wastewater in the tank is accelerated, the operation is simple, the flexibility is high, the control logic is clear and practical, the workload of operators is reduced, the conditions that the pH value is not easy to control, excessive adjustment, wastewater layering and the like during manual adjustment are avoided, the automatic neutralization and discharge of wastewater can be realized under the unattended condition, and the production efficiency of enterprises is greatly improved.
Drawings
FIG. 1 is a process flow diagram of an automated treatment process for wastewater neutralization;
FIG. 2 is a system block diagram of an automated treatment system for wastewater neutralization.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
Example one
In order to solve the problem that the pH value of the wastewater is not accurate enough due to layering and lagging in the acid-base neutralization process, so that the automatic neutralization is difficult to control, the invention provides an automatic treatment method for wastewater neutralization, as shown in figure 1, wherein the automatic treatment of the wastewater is realized by inputting the wastewater into a wastewater tank and discharging the wastewater after the automatic neutralization, and the method comprises the following steps:
s01: acquiring a real-time liquid level and a real-time pH value of liquid in a wastewater tank in a wastewater treatment process;
s02: judging whether the real-time liquid level reaches a preset stirring starting liquid level or not in the process of inputting the wastewater into the wastewater tank, and if so, starting a stirrer arranged in the wastewater tank to stir the wastewater;
s03: in the process of inputting waste water into the waste water tank, whether the real-time liquid level reaches the preset material stopping liquid level or not is judged, if yes, the waste water input is stopped, whether the real-time PH value is in the standard range or not is judged, if not, the acid-base component of the waste water tank is controlled by the aid of the preset formula and the adjusting valve arranged on the waste water tank through the real-time PH value and the real-time liquid level, the PH value of the waste water in the waste water tank is adjusted to the standard range, and the preset material stopping liquid level is higher than the preset stirring starting liquid level.
In the embodiment, the preset material stopping liquid level is at the position of 80% of the height of the waste water tank; and when acid or alkali is added into the wastewater tank for neutralization, controlling the stirrer to accelerate mixing, and detecting the pH value in real time during stirring.
It should be noted that in the process of inputting wastewater into the wastewater tank, whether the real-time liquid level reaches the preset material stopping liquid level or not is judged, if so, the wastewater is stopped to be input, whether the real-time pH value is in the standard range or not is judged, if so, after the stirring is preset for a long time, whether the real-time pH value is still in the standard range or not is judged again, if so, the neutralization treatment is not required, and the wastewater can be discharged.
The invention sets a stirrer in the wastewater tank, starts the stirrer when the real-time liquid level reaches the preset stirring start liquid level to avoid the stratification of wastewater, stops feeding when the real-time liquid level reaches the preset material stop liquid level in the process of inputting wastewater into the wastewater tank, controls the acid-base component input into the wastewater tank by using the real-time PH value and the real-time liquid level through the preset formula and the regulating valve arranged on the wastewater tank when the real-time PH value is not in the standard range, so as to regulate the PH value of the wastewater in the wastewater tank to be in the standard range, controls the regulating valve in real time through the real-time PH value and the real-time liquid level while avoiding the stratification of wastewater (improving the measurement precision of the real-time PH value), accurately controls the acid-base component input into the wastewater tank, thereby realizing the neutralization of wastewater, and solving the problem that the PH value of the wastewater is not accurate due to the stratification in the prior acid-base neutralization process, thereby making automatic neutralization a difficult control problem.
The preset formula in step S03 includes:
the acid addition calculation formula has the expression as follows:
V(HCL)＝(10PH-14×V×LT_9A701A×1000×36.5)/C1+(X)；
wherein the pH is a real-time pH value of 10PH-14Hydrogen ion concentration (mol/L), V wastewater volume, LT _9A701A real-time liquid level, 1000 volume unit (L), 36.5 hydrochloric acid molar mass, C1In order to preset the hydrochloric acid concentration, X is a preset correction value, V(HCL)Is the value of the acid addition component;
adding alkali to calculate a formula, wherein the formula has the expression as follows:
V(NaOH)＝(10-PH×V×LT_9A701A×1000×40)/C2+(X)；
wherein the pH is a real-time pH value of 10-PHIs the hydroxide ion concentration (mol/L), V is the volume of the wastewater tank, LT _9A701A is the real-time liquid level, 1000 is the volume unit (L), 40 is the molar mass of caustic soda, C2Is a preset alkali concentration, X is a preset correction value, V(NaOH)Is the value of the addition base component.
It should be noted that, in this embodiment, the preset hydrochloric acid concentration value is 105, where 105 is a 10% hydrochloric acid concentration (g/L); the preset alkali concentration value is 175, and the 175 is 16% alkali concentration (g/L).
The regulating valve comprises an alkali regulating valve and an acid regulating valve.
The step S03 specifically includes:
judging whether the real-time PH value is smaller than the lower limit value of the standard range, if so, acquiring an alkali component value by utilizing an alkali calculation formula through the real-time PH value and the real-time liquid level, controlling the opening and closing of an alkali regulating valve through the alkali component value, and adding alkali with the alkali component value into the conventional wastewater tank; and when the accumulated alkali adding amount reaches the alkali adding component value, controlling the alkali adding regulating valve to be closed.
And judging whether the real-time PH value is larger than the upper limit value of the standard range, if so, acquiring an acid adding component value by utilizing an acid adding calculation formula according to the real-time PH value and the real-time liquid level, controlling the opening and closing of an acid adding regulating valve according to the acid adding component value, adding acid with the acid adding component value into the conventional wastewater tank, and controlling the acid adding regulating valve to be closed when the cumulative amount of the acid added reaches the acid adding component value.
When the real-time PH value is smaller than the lower limit value of the standard range, the alkali addition component value is obtained by utilizing an alkali addition calculation formula through the real-time PH value and the real-time liquid level, the opening and closing of an alkali addition regulating valve are controlled through the alkali addition component value, and alkali with the alkali addition component value is added into a waste water tank in the past; when the real-time PH value is larger than the upper limit value of the standard range, the acid adding component value is obtained by utilizing an acid adding calculation formula according to the real-time PH value and the real-time liquid level, the opening and closing of an acid adding adjusting valve are controlled by the acid adding component value, the acid with the acid adding component value is added into the waste water tank in the prior art, the component of the acid or the alkali added into the waste water tank is accurate, and the automatic neutralization time is saved.
The method also comprises the following steps after adding alkali with the alkali component value into the wastewater tank:
and judging whether the real-time PH value in the wastewater tank is always within the standard range within a preset time period, if so, indicating that the neutralization is finished, otherwise (if not, returning to the step S03 after the preset time interval), returning to the step S03 to continuously judge whether the real-time PH value is less than the lower limit value of the standard range so as to continuously add alkali for neutralization.
The method also comprises the following steps after acid with an acid component value is added into the wastewater tank:
and judging whether the real-time PH value in the wastewater tank is always within the standard range within a preset time period, if so, indicating that the neutralization is finished, otherwise (if not, returning to the step S03 after the interval of a preset time period), returning to the step S03 to continuously judge whether the real-time PH value is greater than the upper limit value of the standard range so as to continuously add acid for neutralization.
The preset time period in this embodiment is 300S.
After adding alkali with an alkali component value into the wastewater tank, judging whether the real-time PH value in the wastewater tank is always within a standard range within a preset time period, if not, returning to the step S03 to continuously judge whether the real-time PH value is less than the lower limit value of the standard range so as to continuously add alkali for neutralization; after acid with the acid component value is added into the wastewater tank, whether the real-time pH value in the wastewater tank is always within the standard range in the preset time period is judged, if not, the step S03 is returned to continuously judge whether the real-time pH value is larger than the upper limit value of the standard range so as to continue adding acid for neutralization, and the real-time pH value is monitored and judged all the time in the preset time period (in the preset time period, the real-time pH value is always within the standard range, and neutralization is finished), so that the problem of erroneous judgment caused by inaccurate pH value measurement due to the lag of wastewater in the acid-base neutralization process in the prior art is solved, and the accuracy of neutralization control is further improved.
After the step S03 adjusts the PH of the wastewater in the wastewater tank to the standard range, the method further includes:
and discharging the wastewater in the wastewater tank, and stopping the stirrer when the real-time liquid level reaches a preset stirring stop liquid level.
The standard ranges are: [6.8,8.5].
The automatic treatment system for wastewater neutralization is linked with the automatic start and stop of the stirrer, so that the uniform mixing of wastewater in the tank is accelerated, the automatic treatment system is simple to operate, high in flexibility, clear and practical in control logic, the workload of operators is reduced, the conditions that the pH value is difficult to control, excessive in adjustment, wastewater is layered and the like during manual adjustment are avoided, the automatic neutralization and discharge of the wastewater can be realized under the unattended condition, and the production efficiency of enterprises is greatly improved.
Example two
As shown in fig. 2, the present invention also provides an automatic treatment system for wastewater neutralization, which performs automatic treatment of wastewater by inputting wastewater into a wastewater tank and discharging the wastewater after the automatic neutralization, the system comprising:
the measuring module is used for acquiring the real-time liquid level and the real-time PH value of the liquid in the wastewater tank in the wastewater treatment process;
the stirring module is used for judging whether the real-time liquid level reaches a preset stirring starting liquid level or not in the process of inputting the wastewater into the wastewater tank, and if so, starting a stirrer arranged in the wastewater tank to stir the wastewater;
the control module is used for judging whether the real-time liquid level reaches the preset material stopping liquid level or not in the process of inputting wastewater into the wastewater tank, if so, stopping inputting the wastewater, judging whether the real-time PH value is in the standard range or not, if not, utilizing the preset formula and the real-time liquid level to control the acid-base component of the input wastewater tank through the real-time PH value and the real-time liquid level so as to adjust the PH value of the wastewater in the wastewater tank to the standard range, and the preset material stopping liquid level is higher than the preset stirring starting liquid level.
The measurement module comprises:
a liquid level meter: the system is used for acquiring the real-time liquid level of liquid in the wastewater tank in the wastewater treatment process;
a pH meter: is used for acquiring the real-time PH value of the liquid in the wastewater tank in the wastewater treatment process.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
Moreover, descriptions of the present invention as relating to "first," "second," "a," etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating a number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Claims (10)
1. An automatic processing method for wastewater neutralization, characterized in that automatic processing of wastewater is realized by inputting wastewater into a wastewater tank and discharging after automatic neutralization, the method comprising the steps of:
s01: acquiring a real-time liquid level and a real-time pH value of liquid in a wastewater tank in a wastewater treatment process;
s02: judging whether the real-time liquid level reaches a preset stirring starting liquid level or not in the process of inputting the wastewater into the wastewater tank, and if so, starting a stirrer arranged in the wastewater tank to stir the wastewater;
s03: in the process of inputting waste water into the waste water tank, whether the real-time liquid level reaches the preset material stopping liquid level or not is judged, if yes, the waste water input is stopped, whether the real-time PH value is in the standard range or not is judged, if not, the acid-base component of the waste water tank is controlled by the aid of the preset formula and the adjusting valve arranged on the waste water tank through the real-time PH value and the real-time liquid level, the PH value of the waste water in the waste water tank is adjusted to the standard range, and the preset material stopping liquid level is higher than the preset stirring starting liquid level.
2. The automatic processing method for wastewater neutralization according to claim 1, wherein the preset formula in step S03 comprises:
the acid addition calculation formula has the expression as follows:
V(HCL)＝(10PH-14×V×LT_9A701A×1000×36.5)/C1+(X)；
wherein the pH is a real-time pH value of 10PH-14Hydrogen ion concentration (mol/L), V wastewater volume, LT _9A701A real-time liquid level, 1000 volume unit (L), 36.5 hydrochloric acid molar mass, C1For a predetermined hydrochloric acid concentration, X is a predetermined correction value, V(HCL)Is the value of the acid addition component;
adding alkali to calculate a formula, wherein the formula has the expression as follows:
V(NaOH)＝(10-PH×V×LT_9A701A×1000×40)/C2+(X)；
wherein the pH is a real-time pH value of 10-PHIs the hydroxide ion concentration (mol/L), V is the volume of the wastewater tank, LT _9A701A is the real-time liquid level, 1000 is the volume unit (L), 40 is the molar mass of caustic soda, C2Is a preset alkali concentration, X is a preset correction value, V(NaOH)Is the value of the addition base component.
3. The automated wastewater neutralization treatment process of claim 2, wherein the control valves comprise a base addition control valve and an acid addition control valve.
4. The automatic processing method for wastewater neutralization according to claim 3, wherein the step S03 specifically comprises:
judging whether the real-time pH value is smaller than the lower limit value of the standard range, if so, acquiring an alkali addition component value by utilizing an alkali addition calculation formula according to the real-time pH value and the real-time liquid level, controlling the opening and closing of an alkali addition regulating valve according to the alkali addition component value, and adding alkali with the alkali addition component value into the conventional wastewater tank;
and judging whether the real-time PH value is greater than the upper limit value of the standard range, if so, acquiring an acid addition component value by utilizing an acid addition calculation formula through the real-time PH value and the real-time liquid level, controlling the opening and closing of an acid addition regulating valve through the acid addition component value, and adding acid with the acid addition component value into the conventional wastewater tank.
5. The automated wastewater neutralization treatment method according to claim 4, further comprising, after adding the alkali having the alkali component value to the wastewater tank:
and judging whether the real-time pH value in the wastewater tank is always within the standard range within a preset time period, if so, indicating that the neutralization is finished, otherwise, returning to the step S03 to continuously judge whether the real-time pH value is less than the lower limit value of the standard range so as to continuously add alkali for neutralization.
6. The automated wastewater neutralization treatment process according to claim 4, further comprising, after adding acid to the wastewater tank to add an acid component value:
and judging whether the real-time PH value in the wastewater tank is always within the standard range within a preset time period, if so, indicating that the neutralization is finished, otherwise, returning to the step S03 to continuously judge whether the real-time PH value is greater than the upper limit value of the standard range so as to continuously add acid for neutralization.
7. The automated wastewater neutralization treatment method according to claim 1, wherein the step S03, after adjusting the PH of the wastewater in the wastewater tank to a standard range, further comprises:
and discharging the wastewater in the wastewater tank, and stopping the stirrer when the real-time liquid level reaches a preset stirring stop liquid level.
8. An automated process for wastewater neutralization according to any one of claims 1-7, characterized in that the standard ranges are: [6.8,8.5].
9. An automated waste water treatment system for the neutralization of waste water by feeding waste water into a waste water tank and discharging the waste water after the automatic neutralization, the system comprising:
the measuring module is used for acquiring the real-time liquid level and the real-time PH value of the liquid in the wastewater tank in the wastewater treatment process;
the stirring module is used for judging whether the real-time liquid level reaches a preset stirring starting liquid level or not in the process of inputting the wastewater into the wastewater tank, and if so, starting a stirrer arranged in the wastewater tank to stir the wastewater;
the control module is used for judging whether the real-time liquid level reaches the preset material stopping liquid level or not in the process of inputting wastewater into the wastewater tank, if so, stopping inputting wastewater, judging whether the real-time PH value is in the standard range or not, if not, controlling the acid-base component of the wastewater tank through the real-time PH value and the real-time liquid level by utilizing a preset formula and a regulating valve arranged on the wastewater tank, regulating the PH value of the wastewater in the wastewater tank to the standard range, and enabling the preset material stopping liquid level to be higher than the preset stirring starting liquid level.
10. The automated wastewater neutralization treatment system of claim 9, wherein the measurement module comprises:
a liquid level meter: the system is used for acquiring the real-time liquid level of liquid in the wastewater tank in the wastewater treatment process;
a pH meter: is used for acquiring the real-time PH value of the liquid in the wastewater tank in the wastewater treatment process.
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