CN111450583A - Fine clarification tank sludge discharge method - Google Patents
Fine clarification tank sludge discharge method Download PDFInfo
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- CN111450583A CN111450583A CN202010208735.9A CN202010208735A CN111450583A CN 111450583 A CN111450583 A CN 111450583A CN 202010208735 A CN202010208735 A CN 202010208735A CN 111450583 A CN111450583 A CN 111450583A
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- mud discharging
- sedimentation ratio
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/24—Feed or discharge mechanisms for settling tanks
- B01D21/245—Discharge mechanisms for the sediments
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a method for finely discharging sludge in a clarification tank, which is used for finely discharging sludge according to the relation between the change of the settlement ratio before and after sludge discharge and the sludge discharge duration. According to the invention, through improving the refined sludge discharge method of the mechanical accelerated clarification tank, the sludge activity and the water treatment effect are improved, the sludge discharge water loss is reduced, the water production loss in the clarified water treatment link is reduced, the water production cost is reduced, and the refined operation is realized.
Description
Technical Field
The invention relates to a sludge discharge method for a refined clarification tank.
Background
Clarification process systems typically include coagulation and sedimentation. The clarification tank integrates two processes into a structure to complete, and the treatment objects are suspended matters and colloid impurities in water. The clarification purpose is achieved mainly by means of an active sludge layer. When destabilizing impurities contact with the sludge layer along with water flow, the destabilizing impurities contact with the active sludge accumulated in the pool to collide, adsorb and combine with each other, and are separated from water, so that the raw water is quickly purified, and the water is clarified. When the clarification tank is in operation, the sludge discharge link not only influences the water treatment effect, but also relates to the water loss and the cost of chemical consumption, power consumption and the like of water production. The existing sludge discharge regulation is relatively accurate, and the benefit maximization is not realized.
Disclosure of Invention
The invention aims to provide a method for draining sludge in a refined clarification tank, which improves the water treatment effect.
In order to solve the technical problems, the invention adopts the following technical scheme:
a fine clarification tank sludge discharge method carries out fine sludge discharge operation according to the relation between the change of the settlement ratio before and after sludge discharge and the sludge discharge duration.
Further, the method specifically comprises the following steps:
when the sedimentation ratio is less than 10%, the sludge discharge time is 0, and the concrete operation is as follows: the mud discharging door is opened and closed quickly;
when the sedimentation ratio is 10-15%, the sludge discharge time is 5 minutes, and the specific operation mode is as follows: the mud discharging door is opened completely, and the mud discharging door is closed after 5 minutes of mud discharging; after 30 minutes, taking the water samples in the two reaction chambers again for sedimentation ratio detection, and further determining sludge discharge time according to the detection result;
when the sedimentation ratio is 15-20%, the sludge discharge time is 10 minutes, and the specific operation mode is as follows: the mud discharging door is completely opened, and the mud discharging door is closed after 10 minutes of mud discharging; after 30 minutes, taking the water samples in the two reaction chambers again for sedimentation ratio detection, and further determining sludge discharge time according to the detection result;
when the sedimentation ratio is 20-25%, the sludge discharge time is 15 minutes, and the concrete operation is as follows: the mud discharging door is opened completely, and the mud discharging door is closed after 15 minutes of mud discharging; after 30 minutes, taking the water samples in the two reaction chambers again for sedimentation ratio detection, and further determining sludge discharge time according to the detection result;
when the sedimentation ratio is 25-30%, the sludge discharge time is 20 minutes, and the concrete operations are as follows: the mud discharging door is opened completely, and the mud discharging door is closed after 20 minutes of mud discharging; and after 30 minutes, taking the water samples in the two reaction chambers again for sedimentation ratio detection, and further determining the sludge discharge time according to the detection result.
Further, the sedimentation ratio is a five minute sedimentation ratio.
Compared with the prior art, the invention has the beneficial technical effects that:
according to the invention, through improving the refined sludge discharge method of the mechanical accelerated clarification tank, the sludge activity and the water treatment effect are improved, the sludge discharge water loss is reduced, the water production loss in the clarified water treatment link is reduced, the water production cost is reduced, and the refined operation is realized.
Drawings
The invention is further illustrated in the following description with reference to the drawings.
FIG. 1 is a schematic diagram showing the relationship between the change of the sedimentation ratio and the duration of sludge discharge in the method for refining the sludge in the clarifier of the invention.
Detailed Description
And (3) making a proper sludge discharge scheme according to the relation between the change of the sedimentation ratio before and after sludge discharge and the sludge discharge duration by combining the influence of the sand content, turbidity, colloid, microorganisms and temperature change in the water from the yellow river in the Baotou area on the water treatment effect of the clarification tank, and realizing fine operation. The following table specifically shows:
the method of the invention is adopted to optimize the sludge discharge amount of the clarification tank: the water intake of the yellow river is 1900 ten thousand meters3Accounting for a water treatment system, e.g. reducing the water intake by 0.5% can save yellow river water by 9.5 ten thousand meters3Year, the water price of the yellow river is 0.72 yuan/m3Accounting and reducing the sludge discharge amount, and the economic benefit is about 7 ten thousand yuan per year.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (3)
1. A refined clarification tank sludge discharge method is characterized in that refined sludge discharge operation is carried out according to the relation between the change of the settlement ratio before and after sludge discharge and the sludge discharge duration.
2. The refining clarifier sludge discharge method according to claim 1, characterized in that the method specifically comprises:
when the sedimentation ratio is less than 10%, the sludge discharge time is 0, and the concrete operation is as follows: the mud discharging door is opened and closed quickly;
when the sedimentation ratio is 10-15%, the sludge discharge time is 5 minutes, and the specific operation mode is as follows: the mud discharging door is opened completely, and the mud discharging door is closed after 5 minutes of mud discharging; after 30 minutes, taking the water samples in the two reaction chambers again for sedimentation ratio detection, and further determining sludge discharge time according to the detection result;
when the sedimentation ratio is 15-20%, the sludge discharge time is 10 minutes, and the specific operation mode is as follows: the mud discharging door is completely opened, and the mud discharging door is closed after 10 minutes of mud discharging; after 30 minutes, taking the water samples in the two reaction chambers again for sedimentation ratio detection, and further determining sludge discharge time according to the detection result;
when the sedimentation ratio is 20-25%, the sludge discharge time is 15 minutes, and the concrete operation is as follows: the mud discharging door is opened completely, and the mud discharging door is closed after 15 minutes of mud discharging; after 30 minutes, taking the water samples in the two reaction chambers again for sedimentation ratio detection, and further determining sludge discharge time according to the detection result;
when the sedimentation ratio is 25-30%, the sludge discharge time is 20 minutes, and the concrete operations are as follows: the mud discharging door is opened completely, and the mud discharging door is closed after 20 minutes of mud discharging; and after 30 minutes, taking the water samples in the two reaction chambers again for sedimentation ratio detection, and further determining the sludge discharge time according to the detection result.
3. The fining clarifier sludge discharge method according to claim 1 or 2, wherein the sedimentation ratio is a five minute sedimentation ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010208735.9A CN111450583A (en) | 2020-03-23 | 2020-03-23 | Fine clarification tank sludge discharge method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010208735.9A CN111450583A (en) | 2020-03-23 | 2020-03-23 | Fine clarification tank sludge discharge method |
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| CN111450583A true CN111450583A (en) | 2020-07-28 |
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| CN202010208735.9A Pending CN111450583A (en) | 2020-03-23 | 2020-03-23 | Fine clarification tank sludge discharge method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114988540A (en) * | 2022-05-30 | 2022-09-02 | 包头钢铁（集团）有限责任公司 | Water-saving operation method of mechanical accelerated clarification tank |
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| CN114988540A (en) * | 2022-05-30 | 2022-09-02 | 包头钢铁（集团）有限责任公司 | Water-saving operation method of mechanical accelerated clarification tank |
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Application publication date: 20200728 |
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