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Coagulative precipitation water treatment device for repelling supersaturated gas and water treatment method

A water treatment device and coagulation and sedimentation technology, applied in the field of water treatment, can solve problems such as reducing the settling performance of floc particles, and achieve the effects of novel device structure, simple operation and high efficiency

Active Publication Date: 2020-12-29
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reason is that the coagulants such as polyaluminum chloride added to the water are inorganic salts, which are hydrophobic and aerophilic, and become the attachments of supersaturated gas precipitation, and the coagulant floc particles gradually aggregate and grow to form The porous space structure wraps the bubbles precipitated by supersaturated oxygen, forming buoyancy, which reduces the sedimentation performance of floc particles, and even lifts floc particles to float to the water surface, forming scum

Method used

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  • Coagulative precipitation water treatment device for repelling supersaturated gas and water treatment method
  • Coagulative precipitation water treatment device for repelling supersaturated gas and water treatment method
  • Coagulative precipitation water treatment device for repelling supersaturated gas and water treatment method

Examples

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Effect test

Embodiment 1

[0024] Example 1, such as figure 1 As shown, a coagulation and sedimentation water treatment device for driving away supersaturated gas includes a raw water pipe, a gas driving device, a water inlet pipe 1, a coagulant dosing pipe 2, a reaction tank 3, a sedimentation tank 4, and a water outlet pipe 5, which are sequentially connected in series Connected. The coagulant dosing pipe 2 is inserted into the water inlet pipe 1; four staggered partitions 6 are arranged in the reaction tank 3, and the partitions 6 are placed staggered up and down so that the water flow can reciprocate up and down between the partitions 6; The pool 3 and the sedimentation tank 4 are separated by a partition wall 7, and a hole is provided on the partition wall 7, and the water flow in the reaction tank 3 can flow into the sedimentation tank 4 from the hole; the bottom of the sedimentation tank 4 is provided with a mud discharge pipe 8, which is 8 adopts a steel pipe, and the pipe wall is provided with...

Embodiment 2

[0034] Example 2, such as figure 2 As shown, a coagulation and sedimentation water treatment device for driving away supersaturated gas includes a raw water pipe 10, a gas driving device, a water inlet pipe 1, a coagulant dosing pipe 2, a reaction tank 3, a sedimentation tank 4, and a water outlet pipe 5. connected in series in sequence. The gas driving device includes a gas driving pool 11 and at least one drop baffle 15, the falling water baffle 15 is vertically arranged in the gas driving pool 11, the root is fixed and sealed with the bottom plate of the gas driving pool 11, and the top is lower than the gas driving pool 11 The top of the top; the original water pipe 10 and the water inlet pipe 1 are respectively located on both sides of the water drop baffle 15 and connected with the gas driving pool 11, and the water inlet pipe 1 is close to the bottom of the gas driving pool 11; when there are more than one water drop baffle 15, They are arranged in parallel with each ...

Embodiment 3

[0038] Example 3, such as image 3 As shown, a coagulation and sedimentation water treatment device for driving away supersaturated gas includes a raw water pipe 10, a gas driving device, a water inlet pipe 1, a coagulant dosing pipe 2, a reaction tank 3, a sedimentation tank 4, and a water outlet pipe 5. connected in series in sequence. The gas driving device comprises a gas driving pool 11, a stirring paddle 16, and a stirrer 17. The stirring paddle 16 is arranged in the gas driving pool 11, and the stirring machine 17 is located outside the gas driving pool 11 and is fixed on the wall of the pool. The stirring machine 17 is driven by a motor. The stirrer 17 can drive the stirring paddle 16 to rotate.

[0039] Utilize the water treatment method of embodiment 3 device as follows:

[0040] (1) The source water enters the gas driving device through the raw water pipe 10, drives out the supersaturated gas and enters the reaction pool 3 through the water inlet pipe 2, and adds ...

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Abstract

The invention discloses a coagulative precipitation water treatment device and method for repelling supersaturated gas, and belongs to the technical field of water treatment. The device consists of agas expelling tank, a coagulant adding system, a reaction tank, a sedimentation tank and a water inlet and outlet pipeline. A gas expelling pool is arranged before a coagulant is added, an aeration head is arranged at the bottom of the gas expelling pool, an air blower supplies air to the aeration head through an air pipe, and the aeration head releases bubbles to water to expel oversaturated gasin the water out of the water body. The gas expelling pool can expel the supersaturated gas in a water falling mode, a stirring mode and the like. A coagulant is added into the water body in which thesupersaturated gas is expelled, the coagulant and impurities in the water are coagulated into flocculent particles in the reaction tank, the flocculent particles are precipitated to the bottom of thetank in the precipitation tank and then discharged out of the tank through a sludge discharge pipe, and clean water flows out of the tank from the surface of the precipitation tank. According to theinvention, the supersaturated gas in the water is expelled before coagulation, so that the supersaturated gas is prevented from being condensed into bubbles on the surface of the coagulation floc to influence the floc particle precipitation effect, thereby improving the quality of the precipitated effluent.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and relates to a water treatment device and a water treatment method for a water body containing supersaturated gas, in particular to a water treatment in which the supersaturated gas is driven out of the water first, and then coagulated and precipitated Apparatus and water treatment method. Background technique [0002] Coagulation sedimentation is a common method for drinking water treatment, which is used to remove particulate matter such as colloids and suspended solids in water. The so-called coagulation is to add inorganic salt coagulants such as polyaluminum chloride to the water to produce positively charged chain macromolecules, and to form large-particle flocs through electric adsorption, wrapping, and capture of tiny impurities in the water. Faster settling speed. The so-called sedimentation means that the large particle floc formed by coagulation settles to the bottom of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04
CPCC02F9/00C02F1/20C02F1/5236C02F1/5281C02F2001/007Y02W10/10
Inventor 丛海兵吴翔成芃荣傅启飞吴银杰
Owner YANGZHOU UNIV
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