Intelligent zero-discharge drainage method and drainage sedimentation tank applying same

A zero-emission, sedimentation tank technology, applied in separation methods, sedimentation separation, chemical instruments and methods, etc., can solve the problems of large area of ​​​​the amplitude flow sedimentation tank, intermittent water inflow, large instantaneous water inflow, etc. The effect of particle settling distance, reducing drop height, and slowing water velocity

Pending Publication Date: 2020-10-09
NANJING TIANHESHUI ENVIRONMENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are some problems in these types of sedimentation tanks: the maintenance and management of the inclined tube sedimentation tank is difficult, and the inclined tube needs to be replaced after a period of use; The depth is large, the construction is difficult, and the cost is high; the radial flow sedimentation tank covers a large area, the mechanical sludge removal equipment is complex, and the construction quality is high.
In actual sewage treatment operations, intermittent water inflow and large instantaneous w

Method used

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  • Intelligent zero-discharge drainage method and drainage sedimentation tank applying same
  • Intelligent zero-discharge drainage method and drainage sedimentation tank applying same
  • Intelligent zero-discharge drainage method and drainage sedimentation tank applying same

Examples

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Effect test

Embodiment 1

[0034] Example 1: Such as figure 1 with figure 2 As shown, a drainage sedimentation tank using an intelligent zero-discharge drainage method according to the preferred embodiment of the present invention includes a tank body 1, the wall of the tank body 1 is vertical, and the bottom of the tank body 1 is a bucket shape, which is beneficial to particles in the water body Gather. One end of the pool body 1 is provided with a water inlet mechanism, and the other end is provided with a water outlet mechanism. The bottom of the pool body 1 is provided with a mud discharging mechanism. The mud discharging mechanism is an air lift mud discharging or a special scraper and suction machine. The tank body 1 is provided with a level gauge 31 for real-time measurement of the depth of the supernatant in the tank body 1 and the water level in the tank, and the level gauge 31 adopts infrared or ultrasonic. It also includes a control mechanism for controlling the water outlet speed of the wat...

Embodiment 2

[0038] Example 2: Such as image 3 As shown, a drainage sedimentation tank using an intelligent zero-discharge drainage method is different from Embodiment 1 in that the three-stage water distribution chamber 22 is a semicircular chamber that gradually increases in a direction away from the water inlet pipe 21.

Embodiment 3

[0039] Example 3: Such as Figure 4 As shown, a drainage sedimentation tank using an intelligent zero-discharge drainage method is different from Embodiment 1 in that the bottom of the tank body 1 is a flat bottom.

[0040] An intelligent zero-discharge drainage method of the present invention includes the following steps:

[0041] S1: Set a fixed value H according to the disturbance depth generated when the drain pump is running normally and taking water Assume , H Assume Is the maximum value that does not disturb the precipitation zone;

[0042] S2: After the water in the tank is completed, the water in the tank starts to settle and purify, and the first stage supernatant depth H in the tank is measured. 1 Reach H Assume Time t, the initial sedimentation velocity of particles in the pool V Sink =H Assume / t;

[0043] S3: When the supernatant liquid depth H 1 Reach H Assume When the drain pump starts to work;

[0044] S4: According to V Sink Determine the water outlet speed V water...

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Abstract

The invention discloses an intelligent zero-discharge drainage method. The method comprises the following steps: S1, setting the maximum value H<set>/t of the water taking depth of an undisturbed settling zone of a drainage pump, S2, metering the time t when the first-stage supernatant depth H1 of water sedimentation in the tank body reaches H<set>, wherein the initial sedimentation velocity V<sedimentation> of particles in the tank body is equal to H<set>/t, S3, when the depth H1 of the supernatant reaches H<set>, starting the drainage pump, S4, setting the water outlet speed V<water> equal to V<sink>-A, wherein A is a safety value, S5, setting the flow Q1 of the drainage pump equal to V<water>*S, wherein S is the sedimentation area of the tank body, and setting Q1 during initial operation equal to (H <set>/t-A)*S, and S6, with the time t as a period, monitoring the supernatant depth of the second stage to be H2 and the particle settling velocity V<settling>2 in the second stage to beH2/t, and repeating the steps S3 to S5, so that dynamic control is achieved, and water outflow can be intelligently controlled. The invention further provides a drainage sedimentation tank applying the intelligent zero-discharge drainage method, and the sedimentation tank is small in occupied area and high in sedimentation efficiency.

Description

Technical field [0001] The invention relates to an intelligent zero-discharge drainage method, which belongs to the technical field of sewage treatment. Background technique [0002] The sedimentation tank is a treatment structure that uses gravity sedimentation to remove suspended particles with a density greater than water from the water. It is one of the most widely used treatment institutions in sewage treatment. It can be used for wastewater treatment, biological treatment post-treatment and advanced treatment Wait. [0003] At present, the commonly used sedimentation tanks on the market include inclined tube sedimentation tanks, advection sedimentation tanks, vertical flow sedimentation tanks, and amplitude-flow sedimentation tanks. There are some problems in these types of sedimentation tanks: the maintenance and management of the inclined tube sedimentation tank is difficult, and the inclined tube needs to be replaced after a period of use; the advection sedimentation tank...

Claims

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Application Information

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IPC IPC(8): B01D21/30B01D21/24
CPCB01D21/2405B01D21/245B01D21/30
Inventor 许元敏朱成徐琳黄丽华彭昱昱
Owner NANJING TIANHESHUI ENVIRONMENT TECH CO LTD
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