CN112320929A - Method for treating foundation pit water by using MBR module according to water quality - Google Patents
Method for treating foundation pit water by using MBR module according to water quality Download PDFInfo
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- CN112320929A CN112320929A CN202010994570.2A CN202010994570A CN112320929A CN 112320929 A CN112320929 A CN 112320929A CN 202010994570 A CN202010994570 A CN 202010994570A CN 112320929 A CN112320929 A CN 112320929A
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- water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 170
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000012528 membrane Substances 0.000 claims abstract description 26
- 239000000284 extract Substances 0.000 claims abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 16
- 229910052799 carbon Inorganic materials 0.000 claims description 14
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims description 11
- 239000003456 ion exchange resin Substances 0.000 claims description 11
- 229920003303 ion-exchange polymer Polymers 0.000 claims description 11
- 229910001385 heavy metal Inorganic materials 0.000 claims description 8
- 239000012855 volatile organic compound Substances 0.000 claims description 8
- 150000002989 phenols Chemical class 0.000 claims description 5
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000011066 ex-situ storage Methods 0.000 abstract description 2
- 238000011065 in-situ storage Methods 0.000 abstract description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 6
- 229910052801 chlorine Inorganic materials 0.000 description 6
- 239000000460 chlorine Substances 0.000 description 6
- 239000010865 sewage Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- QDHHCQZDFGDHMP-UHFFFAOYSA-N Chloramine Chemical compound ClN QDHHCQZDFGDHMP-UHFFFAOYSA-N 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/42—Liquid level
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention provides a method for treating foundation pit water by using an MBR module according to water quality, which comprises the following steps: the water level sensor detects the water level in the foundation pit in real time, and when the water level of the foundation pit reaches a preset value, the water pump extracts water in the foundation pit to the MBR equipment set; and the online water quality analyzer detects the water quality in the foundation pit in real time and controls the number of the membrane bioreactors in the MBR equipment set to be used according to the water quality. The foundation pit water can be subjected to in-situ ex-situ MBR treatment and then is subjected to recharge or other uses, so that water resources and the cost of foundation pit water treatment are greatly saved; the treatment process is reasonable, the treatment mode can be adjusted in time according to the water quality, and the treatment efficiency is higher.
Description
Technical Field
The invention belongs to the technical field of foundation pit water treatment, and particularly relates to a method for treating foundation pit water by using an MBR (membrane bioreactor) module according to water quality.
Background
With the vigorous development of the repair engineering of the polluted site in China, more and more foundation pits generated after excavation of the polluted site appear, the polluted site is not only polluted by soil but also polluted by water under the ground, and therefore the foundation pit water in the foundation pit is always polluted water. The polluted water in the foundation pit at the present stage is generally extracted and then is taken over and discharged into a municipal pipe network or is transferred to a sewage station for treatment by using a sewage truck, so that the water resource is wasted to a certain extent.
Disclosure of Invention
In order to solve the technical problem, the invention provides a method for treating foundation pit water by using an MBR module according to water quality. The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview and is intended to neither identify key/critical elements nor delineate the scope of such embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented later.
The invention adopts the following technical scheme:
in some alternative embodiments, there is provided a method of treating foundation pit water using an MBR module according to water quality, comprising the steps of:
the water level sensor detects the water level in the foundation pit in real time, when the water level of the foundation pit reaches a preset value, the water pump extracts water in the foundation pit to an MBR (membrane bioreactor) equipment set, and the MBR equipment set is formed by connecting a plurality of membrane bioreactors in series;
and the online water quality analyzer detects the water quality in the foundation pit in real time, and controls the number of the membrane bioreactors in the MBR equipment group to be put into use according to the water quality.
In some optional embodiments, the method for treating foundation pit water by using the MBR module according to water quality further comprises: and after being treated by the MBR equipment set, the foundation pit water is conveyed into a water bag for waiting for subsequent treatment.
In some optional embodiments, the method for treating foundation pit water by using the MBR module according to water quality further comprises: when sulfate radicals, heavy metals and phenol volatile and semi-volatile organic compounds in the foundation pit water exceed the standard, the foundation pit water treated by the MBR equipment set is firstly conveyed into the ion exchange resin device, and then conveyed into the water bag after being treated by the ion exchange resin device.
In some optional embodiments, the method for treating foundation pit water by using the MBR module according to water quality further comprises: when sulfate radicals, heavy metals and phenols in the foundation pit water are volatile and semi-volatile organic compounds exceed the standard, the foundation pit water treated by the MBR equipment set is firstly conveyed into a carbon tank filled with active carbon, and then conveyed into the water bag after being treated by the active carbon.
The invention has the following beneficial effects: the foundation pit water can be subjected to in-situ ex-situ MBR treatment and then is subjected to recharge or other uses, so that water resources and the cost of foundation pit water treatment are greatly saved; the treatment process is reasonable, the treatment mode can be adjusted in time according to the water quality, and the treatment efficiency is higher.
Drawings
FIG. 1 is a schematic diagram of an MBR module-based foundation pit water treatment device.
Detailed Description
The following description and the drawings sufficiently illustrate specific embodiments of the invention to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others.
In some illustrative embodiments, a method of treating foundation pit water using an MBR module according to water quality is provided, comprising the steps of:
firstly, the water level sensor detects the water level in the foundation pit in real time, and when the water level of the foundation pit reaches a preset value, the water pump extracts the water in the foundation pit to the MBR equipment set. The preset value is selected according to actual conditions.
The MBR equipment set is formed by connecting a plurality of membrane bioreactors in series.
And then, detecting the water quality in the foundation pit in real time by using an online water quality analyzer, and controlling the number of the membrane bioreactors in the MBR equipment group to be used according to the water quality.
And finally, the foundation pit water is treated by an MBR (membrane bioreactor) equipment set and then is conveyed into a water bag for waiting for subsequent treatment.
In some illustrative embodiments, the present invention further comprises: when sulfate radicals, heavy metals and phenol volatile and semi-volatile organic compounds in the foundation pit water exceed the standard, the foundation pit water treated by the MBR equipment set is conveyed into the ion exchange resin device, treated by the ion exchange resin device and then conveyed into the water bag. The standard value is set according to the processing standard.
In some illustrative embodiments, the present invention further comprises: when sulfate radicals, heavy metals and phenols in the foundation pit water are volatile and semi-volatile organic compounds exceed the standard, the foundation pit water treated by the MBR equipment set is firstly conveyed into a carbon tank filled with active carbon, and then conveyed into the water bag after being treated by the active carbon.
As shown in figure 1, when a foundation pit in a polluted site is excavated to the bottom of the pit, two sensing devices are arranged on the side wall of the foundation pit 7, wherein the two sensing devices are a water level sensor 1 and a water quality analysis sensor 3 respectively. The water level sensor 1 is used for measuring the water level in the foundation pit. The water quality analysis sensor 3 is used for analyzing the water quality in the foundation pit, and comprises: a residual chlorine sensor, a TOC sensor, a conductivity sensor, an ORP sensor and a turbidity sensor. Chlorine residue sensors, chlorine, are a wide range of disinfectants, particularly in the sterilization and disinfection of drinking water. The residual chlorine sensor can detect the contents of free chlorine, monochloramine and total chlorine in a water body sample, is an amperometric sensor with two electrodes and an outer coating film and is used for detecting the concentration of residual chlorine in water without a surfactant. A conductivity sensor. The conductivity sensor is mainly used for detecting the concentration of total ions in a water body, and can be classified into an electrode type, an inductance type and an ultrasonic type according to different measurement principles. Turbidity sensors measure suspended solids in water by measuring the amount of light transmitted through the water, and these suspended solids may reflect contamination of the water.
The water quality analysis sensor 3 is connected with the online water quality analyzer to acquire and analyze data acquired by the water quality analysis sensor 3, and the online water quality analyzer 4 also samples some foundation pit water in the foundation pit for detection and analysis, so that the water quality of the foundation pit is obtained. The on-line water quality analyzer is a water quality monitoring tool, can automatically monitor various parameters of water quality in real time, belongs to the prior art, and is not described herein again.
The MBR equipment group 5 is formed by connecting a plurality of membrane bioreactors in series, namely, the water inlet of one membrane bioreactor is connected with the water outlet of the other membrane bioreactor on one side, the water outlet is connected with the water inlet of the other membrane bioreactor on the other side, and foundation pit water sequentially flows through the membrane bioreactors.
The water inlet of the water pump 2 is positioned in the foundation pit 7, the water outlet of the water pump 2 is connected with the water inlet of the MBR equipment set 5, and the water level sensor 1 is triggered to automatically extract foundation pit water. The online water quality analyzer 4 rapidly analyzes the water quality according to the national standard or the customized standard, and the number of the membrane bioreactors in the MBR equipment group 5 to be put into use is started according to different water qualities. The water outlet of the MBR equipment group 5 is connected with the water inlet of the water bag 6, and when foundation pit water is treated by the MBR equipment group 5, the foundation pit water enters the water bag at the tail end to wait for subsequent recharging or other treatment.
And a deep treatment device 8 is arranged between the MBR device group 5 and the water bag 6.
In some illustrative embodiments, the advanced treatment device 8 is an ion exchange resin device, the ion exchange resin device is arranged between the MBR device group 5 and the water bag 6, the water inlet of the ion exchange resin is connected with the water outlet of the MBR device group 5, and the water outlet of the ion exchange resin is connected with the water inlet of the water bag 6. When sulfate radicals, heavy metals and phenols in the foundation pit water are volatile and semi-volatile organic compounds exceed the standard, the ion exchange resin device can be connected in front of the water bag 6, and the foundation pit water treated by the MBR equipment set 5 is further subjected to advanced treatment so as to meet the subsequent use requirements.
In some illustrative embodiments, the advanced treatment device 8 is a carbon tank with activated carbon inside, the carbon tank is arranged between the MBR device group 5 and the water bag 6, the water inlet of the carbon tank is connected with the water outlet of the MBR device group 5, and the water outlet of the carbon tank is connected with the water inlet of the water bag 6. When sulfate radicals, heavy metals and phenols in the foundation pit water are volatile and semi-volatile organic compounds exceed the standard, the carbon tank can be connected in front of the water bag 6, and the foundation pit water treated by the MBR equipment set 5 is further subjected to advanced treatment so as to meet the subsequent use requirements.
The invention realizes the analysis of data through the controller. The controller is composed of a program counter, an instruction register, an instruction decoder, a time sequence generator and an operation controller, namely, the operation of coordinating and commanding the whole system is completed, which belongs to the prior art and is not described herein again. The water level sensor 1 is connected with a data input end of the controller, the water pump 2 is connected with a control output end of the controller, the water level sensor 1 collects the water level in the foundation pit in real time and sends collected data to the controller, when the water level reaches a preset value, the controller sends a control instruction to the water pump, the water pump 2 is controlled to start, and extraction is started.
The MBR device group 5 further includes: the water outlet main pipe 501 is communicated with the membrane bioreactors through a branch pipe 502. The pipeline connecting the water outlet of each membrane bioreactor with the water outlet main pipe 501 is provided with a first valve 503, and the pipeline between each membrane bioreactor, namely the branch pipe 502 is provided with a second valve 504. The first valve 503 and the second valve 504 are controlled to be opened/closed by the controller, that is, the first valve and the second valve are connected with the control output end of the controller, the online water quality analyzer is connected with the data input end of the controller, the data detected by the online water quality analyzer is sent to the controller, and the controller outputs corresponding control instructions to the valves, so that the number of the membrane bioreactors in the MBR equipment set 5 to be used is controlled, for example, if the second valve 504 corresponding to the uppermost membrane bioreactor is closed, the first valve 503 is opened, only the uppermost membrane bioreactor is used; if the second valve 504 corresponding to the uppermost membrane bioreactor is opened and the first valve 503 is closed, and the second valve 504 corresponding to the second membrane bioreactor from the top is closed and the first valve 503 is opened, the two membrane bioreactors put into use are adopted. The control mode is simple and reliable.
Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.
Claims (4)
1. A method for treating foundation pit water by using an MBR module according to water quality is characterized by comprising the following steps:
the water level sensor detects the water level in the foundation pit in real time, when the water level of the foundation pit reaches a preset value, the water pump extracts water in the foundation pit to an MBR (membrane bioreactor) equipment set, and the MBR equipment set is formed by connecting a plurality of membrane bioreactors in series;
and the online water quality analyzer detects the water quality in the foundation pit in real time, and controls the number of the membrane bioreactors in the MBR equipment group to be put into use according to the water quality.
2. The method of claim 1, further comprising: and after being treated by the MBR equipment set, the foundation pit water is conveyed into a water bag for waiting for subsequent treatment.
3. The method of treating the foundation pit water according to the water quality using the MBR module according to claim 2, further comprising: when sulfate radicals, heavy metals and phenol volatile and semi-volatile organic compounds in the foundation pit water exceed the standard, the foundation pit water treated by the MBR equipment set is firstly conveyed into the ion exchange resin device, and then conveyed into the water bag after being treated by the ion exchange resin device.
4. The method of treating the foundation pit water according to the water quality using the MBR module according to claim 2, further comprising: when sulfate radicals, heavy metals and phenols in the foundation pit water are volatile and semi-volatile organic compounds exceed the standard, the foundation pit water treated by the MBR equipment set is firstly conveyed into a carbon tank filled with active carbon, and then conveyed into the water bag after being treated by the active carbon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010994570.2A CN112320929A (en) | 2020-09-21 | 2020-09-21 | Method for treating foundation pit water by using MBR module according to water quality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010994570.2A CN112320929A (en) | 2020-09-21 | 2020-09-21 | Method for treating foundation pit water by using MBR module according to water quality |
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| CN112320929A true CN112320929A (en) | 2021-02-05 |
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| CN202010994570.2A Pending CN112320929A (en) | 2020-09-21 | 2020-09-21 | Method for treating foundation pit water by using MBR module according to water quality |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105625295A (en) * | 2016-03-09 | 2016-06-01 | 上海长凯岩土工程有限公司 | Foundation pit groundwater recharging system |
| CN205444161U (en) * | 2016-03-09 | 2016-08-10 | 上海长凯岩土工程有限公司 | Foundation ditch groundwater recharge device |
| CN209052473U (en) * | 2018-08-31 | 2019-07-02 | 泰安康达供水设备有限公司 | A kind of tap water detection filter device |
| CN111252954A (en) * | 2020-03-17 | 2020-06-09 | 重庆工商大学 | Remote sewage management system |
-
2020
- 2020-09-21 CN CN202010994570.2A patent/CN112320929A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105625295A (en) * | 2016-03-09 | 2016-06-01 | 上海长凯岩土工程有限公司 | Foundation pit groundwater recharging system |
| CN205444161U (en) * | 2016-03-09 | 2016-08-10 | 上海长凯岩土工程有限公司 | Foundation ditch groundwater recharge device |
| CN209052473U (en) * | 2018-08-31 | 2019-07-02 | 泰安康达供水设备有限公司 | A kind of tap water detection filter device |
| CN111252954A (en) * | 2020-03-17 | 2020-06-09 | 重庆工商大学 | Remote sewage management system |
Non-Patent Citations (4)
| Title |
|---|
| C.C.LEE: "《环境工程计算手册》", 30 June 2003 * |
| 约翰.帕尔默等: "《水：啤酒酿造用水指南》", 30 April 2019 * |
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Address after: 213100 No. 22, Lingxiang Road, Wujin economic development zone, Changzhou City, Jiangsu Province Applicant after: JIANGSU YANGTZE RIVER DELTA ENVIRONMENTAL SCIENCE AND TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. Address before: Room 323, Creative Research Center, 8 Yanzheng West Avenue, Wujin District, Changzhou City, Jiangsu Province, 213100 Applicant before: JIANGSU YANGTZE RIVER DELTA ENVIRONMENTAL SCIENCE AND TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. |
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Application publication date: 20210205 |