CN-121974509-A - Multifunctional and integrated composite micro-polluted underground water treatment device and method

CN121974509ACN 121974509 ACN121974509 ACN 121974509ACN-121974509-A

Abstract

The invention relates to the technical field of drinking water treatment, and discloses a multifunctional and integrated combined micro-polluted underground water treatment device and method, wherein the device mainly comprises three main devices of an aeration column, a chemical crystallization circulating granulation fluidized bed and a catalytic oxidation filter column and a matched system; the aeration column reduces the alkalinity of raw water by aerating raw water treated by adding acid, the chemical crystallization circulating granulation fluidized bed can remove hardness, iron and manganese in the raw water, the effluent of the crystallization fluidized bed enters the catalytic oxidation filter column for filtration, manganese, ammonia nitrogen, bacteria and microorganisms in the water are further removed by the internal catalytic oxidation active filter material, and the multifunctional integrated combined micro-polluted groundwater treatment device can achieve the functions of softening, removing iron, removing manganese, removing turbidity, removing ammonia nitrogen and bacteria and microorganisms for micro-polluted groundwater, and the effluent can directly reach the drinking water standard.

Inventors

HUANG TINGLIN
HUANG CHENGSHUAI
HU RUIZHU
ZHAO ZHENG
LIANG JIAN
LI DONGYAO
LUO ZHIPENG
ZHANG HAOWEN
BU JIANWEI

Assignees

西安建筑科技大学
陕西省天然气股份有限公司
西安唯源环保科技有限公司

Dates

Publication Date: 20260505
Application Date: 20260116

Claims (8)

1. The utility model provides a multi-functional and compound little contaminated groundwater processing apparatus that integrates which characterized in that includes: the acid adding aeration system comprises an aeration column, an acid adding barrel and an acid adding pump, wherein the lower part and the upper part of the side wall are respectively provided with a first water inlet pipe and a first water outlet pipe, the acid adding barrel is communicated with the aeration column through an acid adding pipe, and the acid adding pump is arranged on the acid adding pipe; the crystallization granulation fluidized bed comprises a barrel, a dosing barrel communicated with the barrel through a dosing pipe and a dosing pump arranged on the dosing pipe, wherein the lower part of the side wall of the barrel is communicated with a first water outlet pipe, a second water outlet pipe is arranged above the side wall of the barrel, and a first connecting end and a second connecting end are sequentially arranged on the second water outlet pipe along the flow direction; The acidification system comprises a reaction cavity and a carbon dioxide gas source communicated with the top of the reaction cavity through a gas supply pipe, and the side wall and the bottom of the reaction cavity are respectively provided with a second water inlet pipe connected with a first connecting end and a third connecting pipe connected with a second connecting end; the upper part of the side wall of the catalytic oxidation filter column is communicated with a second water outlet pipe, and the bottom of the side wall is provided with a water outlet; And when ammonia nitrogen pollutants in the effluent of the crystallization granulation fluidized bed exceed the standard of drinking water, introducing carbon dioxide into the reaction cavity through a carbon dioxide gas source, and regulating the pH value of the effluent of the crystallization granulation fluidized bed to ensure that the effluent of the crystallization granulation fluidized bed reaches the water inlet condition of the catalytic oxidation filter column.
2. The multifunctional integrated composite micro-polluted underground water treatment device as claimed in claim 1, wherein a dosing valve is arranged on the dosing pipe, and the dosing pump is a peristaltic pump.
3. The multifunctional and integrated composite micro-polluted underground water treatment device as claimed in claim 1, wherein an aeration head is arranged at the bottom of the inner cavity of the aeration column, the acid adding pipe is provided with an acid adding valve, and the acid adding pump is a peristaltic pump.
4. The multifunctional integrated composite micro-polluted underground water treatment device as claimed in claim 1, wherein a gas valve is arranged on the gas supply pipe, and the carbon dioxide gas source is a carbon dioxide gas cylinder.
5. The multifunctional integrated composite micro-polluted underground water treatment device as claimed in claim 1, wherein said filter material of said crystallization granulation fluidized bed is calcite.
6. The multifunctional and integrated composite micro-polluted underground water treatment device as claimed in claim 1, wherein the barrel is sequentially provided with a water distribution area, a medicine distribution area, a granulation area and a clear water area from bottom to top, the granulation area comprises a fluidization area at the bottom of the barrel and a separation area at the middle upper part of the barrel, a water distributor is arranged above the position, communicated with the first water outlet pipe, in the barrel, the upper part of the water distributor extends out of the granulation area to distribute water, the upper part of the water distributor is provided with a water outlet hole, and the water outlet direction of the water outlet hole and the main direction of water flow in the fluidization area are arranged at an included angle of more than 90 degrees and less than 180 degrees.
7. The multifunctional and integrated composite micro-polluted underground water treatment device as claimed in claim 1, wherein an air compressor and a booster pump are arranged on the side edge of the catalytic oxidation filter column, a back flush water outlet is arranged below a water outlet on the side wall of the catalytic oxidation filter column, the air compressor is connected below a long handle filter head on the catalytic oxidation filter column through a back flush air pipe, a back flush water valve is arranged on the back flush air pipe, the booster pump is connected above the long handle filter head on the catalytic oxidation filter column through a back flush water pipe, and a back flush air valve is arranged on the back flush water pipe.
8. A method for treating composite micro-polluted groundwater based on the multifunctional and integrated composite micro-polluted groundwater treatment device as claimed in claim 1, comprising the following steps: Introducing micro-polluted underground water into an aeration column from a first water inlet pipe, and adjusting the aeration amount of an aeration head in the aeration column to blow off carbon dioxide; Then the micro-polluted underground water enters a crystallization granulation fluidized bed through a first water outlet pipe to remove soluble impurities in the water, and the removed micro-polluted underground water flows out through a second water outlet pipe; According to whether ammonia nitrogen pollutants in the effluent of the second water outlet pipe exceed the standard or not, the pH value of the effluent of the crystallization granulation fluidized bed is adjusted by selectively adjusting the pH value through an acidification system, and if the ammonia nitrogen pollutants exceed the standard, when part of the water in the second water outlet pipe enters the reaction cavity through the second water inlet pipe, carbon dioxide is controlled to enter the reaction cavity through a gas valve, and acid liquor after reaction in the reaction cavity flows back into the second water outlet pipe through a third connecting pipe so as to adjust the pH value of the effluent of the crystallization granulation fluidized bed; and then the effluent of the second water outlet pipe enters a catalytic oxidation filter column and is filtered through a filter layer reaction so as to carry out oxidative decomposition of pollutants in the micro-polluted groundwater.

Description

Multifunctional and integrated composite micro-polluted underground water treatment device and method Technical Field The invention relates to the technical field of drinking water treatment, in particular to a multifunctional and integrated composite micro-polluted underground water treatment device. Background The synchronous removal of hardness, fluorine, iron, manganese and ammonia nitrogen in the composite micro-polluted groundwater is a complex cooperative process of pollutant conversion and separation. The existing main process mostly adopts a mode of combining a conventional process and a deep treatment process. The conventional process mainly comprises coagulation, precipitation, filtration and disinfection, and the advanced treatment process is generally combined with aeration, adsorption or oxidation and other processes. The complex and lengthy combination process is adopted mainly because the conventional technology has a certain technical difficulty on the simultaneous removal process of the pollutants at present, and the method is mainly characterized in the following two aspects: firstly, the optimal removal conditions of various pollutants are different. The method generally adopts coagulation sedimentation after aeration to remove iron, but has limited effect on removing manganese, can not realize standard removal of manganese, requires pH value to be more than 9 for hardness removal, and is not suitable for removing fluorine and ammonia nitrogen under alkaline conditions. Secondly, the different residence time required for removing each pollutant, which results in different size and structure of equipment/structures required for treating each pollutant, is also an important reason for failing to realize synchronous removal. Therefore, the hardness, iron, manganese, ammonia nitrogen, bacteria and microorganisms in the composite polluted groundwater are removed, 5-6 process units are needed in a general conventional process, the occupied area is large, the technical difficulty of the connection requirements of each process section is high, the water outlet of the former process section must be ensured to meet the water inlet requirement of the latter process, and the plane utilization rate of the whole equipment is low. Disclosure of Invention The invention provides a multifunctional and integrated combined micro-polluted underground water treatment device and method to solve the defects in the prior art, the composite micro-polluted underground water treatment device can soften, remove iron, remove manganese, remove turbidity, remove ammonia nitrogen and remove bacteria and microorganisms on micro-polluted underground water, and the effluent can directly reach the drinking water standard. The technical scheme of the invention is that the multifunctional and integrated composite micro-polluted underground water treatment device is used for synchronously removing hardness, alkalinity, ferro-manganese, ammonia nitrogen and the like in water, and comprises the following components: the acid adding aeration system comprises an aeration column, an acid adding barrel and an acid adding pump, wherein the lower part and the upper part of the side wall are respectively provided with a first water inlet pipe and a first water outlet pipe, the acid adding barrel is communicated with the aeration column through an acid adding pipe, and the acid adding pump is arranged on the acid adding pipe; The crystallization granulation fluidized bed comprises a barrel, a dosing barrel communicated with the barrel through a dosing pipe and a dosing pump arranged on the dosing pipe, wherein the lower part of the side wall of the barrel is communicated with a first water outlet pipe, a second water outlet pipe is arranged above the side wall of the barrel, and a first connecting end and a second connecting end are sequentially arranged on the second water outlet pipe along the flow direction; The acidification system comprises a reaction cavity and a carbon dioxide gas source communicated with the top of the reaction cavity through a gas supply pipe, and the side wall and the bottom of the reaction cavity are respectively provided with a second water inlet pipe connected with a first connecting end and a third connecting pipe connected with a second connecting end; The upper part of the side wall of the catalytic oxidation filter column is communicated with a second water outlet pipe, the bottom of the side wall is provided with a water outlet, and a long-handle filter head is arranged in the side wall; And when ammonia nitrogen pollutants in the effluent of the crystallization granulation fluidized bed exceed the standard of drinking water, introducing carbon dioxide into the reaction cavity through a carbon dioxide gas source, and regulating the pH value of the effluent of the crystallization granulation fluidized bed to ensure that the effluent of the crystallization granulation fluidized bed reaches the water inle