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Secondary dilution multi-point drug dosing system and its application method

A technology of secondary dilution and dosing system, applied in chemical instruments and methods, flocculation/sedimentation water/sewage treatment, water/sludge/sewage treatment, etc. , increase the amount of dosing and other problems, so as to reduce the project cost and operating cost, improve the effect of adding and mixing drugs, and improve the outlet flow rate.

Active Publication Date: 2021-02-12
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are: the mixing effect is poor; under the unsteady impact of the raw water pipe flow, the obliquely short filling pipe is quickly fatigued and broken, and it becomes the filling along the raw water pipe wall, and the effect is even worse
Many sites have no choice but to directly connect the inclined short filling pipe to the inlet of the mixing tank to drip water, which greatly reduces the effect of the medicine and increases the dosage

Method used

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  • Secondary dilution multi-point drug dosing system and its application method
  • Secondary dilution multi-point drug dosing system and its application method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: Dosing of solid medicine.

[0028] If more solid flocculants such as polyaluminum sulfate are added on site, according to figure 1 The system shown and the aforementioned specific implementation method can be carried out according to the process of "dissolving, primary dilution, metering, secondary dilution, and multi-point filling".

Embodiment 2

[0029] Embodiment 2: liquid medicament dosing.

[0030] If liquid flocculants such as liquid polyferric sulfate are added on site, figure 1 On the basis of the system shown, the primary dilution pool (3) can be omitted, and then referring to the aforementioned specific implementation method, it can be carried out according to the process of "metering, secondary dilution, and multi-point filling".

Embodiment 3

[0031] Example 3: Dosing of medicament without mixer or mixing pool.

[0032] For the water treatment system without medicament mixer or mixing tank, when assembling the system device according to embodiment 1 or embodiment 2, the secondary dilution ratio will be increased by about 2 times, and the outlet flow rate of the obliquely short filling pipe 16 will be doubled. That is not less than 2 times of the raw water flow rate, specifically calculate the pipe diameters of the medicament pipe 8, the diluent medicament pipe 12 and the obliquely short filling pipe 16, and the outlet cross-sectional area of ​​the obliquely short filling pipe 16.

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Abstract

The invention discloses a secondary dilution multi-point dosing system and a use method thereof, which belong to the technical field of water purification and are mainly used for quantitative dosing of flocculation, oxidation, reduction and other chemicals in the process of urban water purification, domestic sewage and industrial wastewater treatment. The system includes a secondary dilution system, an annular distribution pipe, and multiple oblique short filling pipes with the same structure. The secondary dilution system includes a dissolution tank, a drug discharge valve, a chemical pool, an inspection valve, a metering pump, an outlet valve, a flow meter and The medicine pipe, the medicine pipe is connected with the pressure water pipe and the dilution medicine pipe respectively through the tee; the annular distribution pipe is connected with the oblique short filling pipe through the filling valve, and the oblique short filling pipe is inserted into the raw water pipe diameter 1 / 4 depth. The present invention greatly prolongs the service life of the obliquely short filling pipe and improves the filling and mixing effect through the technical method of secondary dilution, multi-point and obliquely short filling pipe. The present invention can replace conventional single-point filling pipe, mixing facilities, reducing engineering and operating costs.

Description

Technical field: [0001] The invention belongs to the technical field of water quality purification, and in particular relates to a device for secondary dilution and multi-point dosing of agents such as flocculation, oxidation and reduction in the process of urban water purification, domestic sewage and industrial wastewater treatment, and a method of use. Background technique: [0002] In the water purification process of existing urban waterworks, it is indispensable to add flocculants. The process method used mainly includes dissolving the flocculant first, then diluting, and then using seedling nozzles for quantitative dosing. Most modern waterworks use metering pumps to inject raw water pipes. Together with the raw water, it passes through the static pipeline mixer or the mixing tank for rapid and uniform mixing, and then enters the flocculation tank for flocculation reaction to form "alum flowers". [0003] The dilution ratio of the dissolved flocculant is often subjec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52
CPCC02F1/5227C02F1/5236C02F1/5281
Inventor 张新喜赵攀马江雅胡小兵徐佩
Owner ANHUI UNIVERSITY OF TECHNOLOGY