CN115407034A - Method for determining pollution source of lake water body pollution - Google Patents
Method for determining pollution source of lake water body pollution Download PDFInfo
- Publication number
- CN115407034A CN115407034A CN202210783852.7A CN202210783852A CN115407034A CN 115407034 A CN115407034 A CN 115407034A CN 202210783852 A CN202210783852 A CN 202210783852A CN 115407034 A CN115407034 A CN 115407034A
- Authority
- CN
- China
- Prior art keywords
- lake
- water
- pollution
- sampling
- inflow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 125
- 238000000034 method Methods 0.000 title claims abstract description 34
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 80
- 238000005070 sampling Methods 0.000 claims abstract description 60
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 55
- 239000011574 phosphorus Substances 0.000 claims abstract description 55
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 55
- 239000013049 sediment Substances 0.000 claims abstract description 55
- 239000011435 rock Substances 0.000 claims abstract description 42
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 40
- 239000002352 surface water Substances 0.000 claims abstract description 24
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 16
- 231100000719 pollutant Toxicity 0.000 claims abstract description 16
- 238000004458 analytical method Methods 0.000 claims abstract description 12
- 238000011835 investigation Methods 0.000 claims abstract description 5
- 239000003673 groundwater Substances 0.000 claims description 16
- 230000015572 biosynthetic process Effects 0.000 claims description 12
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 11
- 239000000126 substance Substances 0.000 claims description 11
- 238000012544 monitoring process Methods 0.000 claims description 10
- 238000011160 research Methods 0.000 claims description 10
- 239000002689 soil Substances 0.000 claims description 7
- 230000002159 abnormal effect Effects 0.000 claims description 6
- 229910001385 heavy metal Inorganic materials 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 3
- 238000002386 leaching Methods 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 239000011707 mineral Substances 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 claims description 2
- 238000012876 topography Methods 0.000 claims description 2
- 238000003911 water pollution Methods 0.000 abstract description 10
- 238000013508 migration Methods 0.000 abstract description 6
- 230000005012 migration Effects 0.000 abstract description 6
- 230000009471 action Effects 0.000 abstract description 3
- 230000002265 prevention Effects 0.000 abstract description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 14
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 14
- 238000001514 detection method Methods 0.000 description 14
- 229910052748 manganese Inorganic materials 0.000 description 14
- 239000011572 manganese Substances 0.000 description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 11
- 229910052802 copper Inorganic materials 0.000 description 11
- 239000010949 copper Substances 0.000 description 11
- 238000005755 formation reaction Methods 0.000 description 11
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- 229910052785 arsenic Inorganic materials 0.000 description 8
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 8
- 229910052759 nickel Inorganic materials 0.000 description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 6
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 6
- 229910052753 mercury Inorganic materials 0.000 description 6
- 229910052725 zinc Inorganic materials 0.000 description 6
- 239000011701 zinc Substances 0.000 description 6
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 5
- 240000002853 Nelumbo nucifera Species 0.000 description 5
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 5
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 5
- 229910052793 cadmium Inorganic materials 0.000 description 5
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 4
- 229910052804 chromium Inorganic materials 0.000 description 4
- 239000011651 chromium Substances 0.000 description 4
- 230000000875 corresponding effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000000356 contaminant Substances 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 230000036541 health Effects 0.000 description 2
- 239000011133 lead Substances 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000488974 Loranthus Species 0.000 description 1
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 241001506766 Xanthium Species 0.000 description 1
- 241001251949 Xanthium sibiricum Species 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000009360 aquaculture Methods 0.000 description 1
- 244000144974 aquaculture Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 229910052625 palygorskite Inorganic materials 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000007619 statistical method Methods 0.000 description 1
- ZFXYFBGIUFBOJW-UHFFFAOYSA-N theophylline Chemical compound O=C1N(C)C(=O)N(C)C2=C1NC=N2 ZFXYFBGIUFBOJW-UHFFFAOYSA-N 0.000 description 1
- 229960000278 theophylline Drugs 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910021654 trace metal Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/18—Water
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a method for determining a pollution source of lake water pollution, and belongs to the technical field of water pollution prevention and control. The method comprises the following steps: sampling the rock of the stratum containing the pollution elements near the lake basin, the inflow of underground water into the lake, the inflow of surface water and surface water sediments into the lake, and the bottom mud and the water covering the bottom mud of the lake inflow port, measuring the collected samples, and determining the pollution source of the lake water pollution by comparing the analysis results of all pollutants and combining the basin surface source pollution investigation. According to the invention, the occurrence state, weathering migration carrying rule and distribution characteristics of potential pollutants in the lake basin under the regional geological action are summarized through investigation, sampling and analysis, and the influence degree of the potential pollutants under different geological backgrounds, particularly main pollution elements such as nitrogen, phosphorus and the like on the lake water quality is further determined, so that the pollution source of the lake water pollution is accurately determined.
Description
Technical Field
The invention relates to the technical field of water pollution control, in particular to a method for determining a pollution source of lake water pollution.
Background
The lake is a junction point of interaction of all rings of the earth surface system, is an important component of a land water ring, and is closely related to a biosphere, an atmospheric ring, a rock ring and the like. The lake not only has the functions of regulating and storing flood, guiding water and irrigating, drinking water source and place, transportation, power generation, aquaculture and landscape tourism, but also has the special functions of regulating regional climate, recording regional environmental change and maintaining regional ecological system balance and breeding biological diversity; therefore, the method has important significance in protecting the lake water environment.
At present, global environment deteriorates, water body pollution of lakes is increasingly serious, and the protection of the water body environment of lakes is imperative, and firstly, the source of pollution is determined, and then a prevention and control means is provided in a targeted manner. But for determining the pollution source of the lake water body pollution, a specific and effective means is lacked in the field at present.
Disclosure of Invention
In order to solve the problems, the invention provides a method for determining a pollution source of lake water pollution.
In order to realize the purpose, the invention provides the following technical scheme:
a method for determining a pollution source of lake water body pollution comprises the following steps: sampling the rock of the stratum containing the pollution elements near the lake basin, the inflow of underground water into the lake, the inflow of surface water and water system sediments into the lake, the bottom sediment of the lake inflow port and the water covering on the bottom sediment, measuring the collected samples, and determining the pollution source of the lake water body pollution by comparing the analysis results of all pollutants and combining the basin non-point source pollution investigation.
Preferably, the rock of the stratum containing the pollution elements near the lake basin is the rock in the stratum with the background value of the pollution elements exceeding the Clark value determined by analyzing comprehensive research of regional geological reports, regional mineral geological reports, regional rock geochemical anomalies and research results of various institutes at home and abroad of the lake basin.
Preferably, the method for sampling the rock of the stratum containing the pollution elements near the lake basin comprises the following steps: sampling within the range of 1/10 of the line distance of the determined sampling points, combining 3 sampling points into one sample, and collecting fine-grained substances in a soil leaching layer-matrix layer at the depth of 10cm-50cm from the earth surface.
Preferably, the inflow underground water of the lake is the underground water which is determined according to comprehensive research of regional geological reports, regional hydrogeological reports, regional structure distribution conditions and research results of domestic and foreign research institutes and whether pollutants are brought from the deep part of the earth by structural activities and are finally discharged into the lake.
Preferably, the flowing of the lake into the groundwater requires knowledge of topography, geological structure, lithology and distribution of the lake and the surrounding terrain, geological structure, lithology and distribution of the stratum, and distribution conditions of the aquifer and the relative water barrier; finding out the underground water type, the burying condition, the chemical characteristics of the underground water, the underground water supply, the runoff and drainage condition and the exploitation and utilization condition of the hydrogeological unit; the cause type, the exposure position, the formation condition, the spring water flow and the water quality of spring water in the hydrogeological unit.
Preferably, the sampling method of the inflow of groundwater from the lake comprises the following steps: and acquiring an instantaneous water sample according to the monitoring point position, and making a sampling record and a sample uniqueness identifier.
Preferably, the lake inflow surface water and the water system sediments are determined according to the water system distribution characteristics of the lake basin and the known branch distribution condition; the basic principle is as follows: there are sampling points in the area to control the abnormal range, to define the abnormal position and find out the abnormal distribution and combination characteristics.
Preferably, the method for sampling the water sediments flowing into the surface of the lake comprises the following steps: taking 30cm of non-disturbed water system sediment, taking one sample every 10cm from top to bottom, and taking 3 samples at one point.
Preferably, the method for sampling the bottom mud of the lake inflow port and the water covering the bottom mud comprises the following steps: adopting a non-disturbance sample, inserting a tubular sampler into a sampling point, sucking out an overburden water sample 20-30cm above the sediment by a siphon method, sequentially withdrawing the sediment from the sampler, dividing the sediment by every 10cm, and respectively adopting sediment samples of 0-10cm, 10-20cm and 20-30 cm.
Preferably, the contaminants include: total phosphorus, ammonia nitrogen, total nitrogen, organic matters and heavy metals.
Potential factors of the lake water body pollution, including concentration difference of mineral forming elements, enter the lake water body through soil migration and surface water and underground water transportation; polluted water is imported into lakes through surface runoff, underground water, geochemical migration, geological structures and other ways, so that the content of polluted elements in the water body exceeds the standard; as part of pipe networks are repaired over the years, leakage risks caused by aging, breakage, silting, blockage and the like of pipelines exist, so that soil around a leakage point generates 'secondary pollution', and further, the phenomenon that the soil permeates into underground water and flows into lakes is also a potential factor of water body pollution; the migration of each contaminant is schematically shown in FIG. 1. Therefore, the factors of the lake water pollution are complex and not limited to human living pollution, and the factors except the human living pollution are often difficult to determine accurately.
The invention has the following beneficial technical effects:
according to the invention, through field investigation and sampling analysis on rocks, tectonic zones, underground water, surface water, water system sediments, bottom mud and the like of the lake watershed, the occurrence state, weathering migration carrying rule and distribution characteristics of potential pollutants of the lake watershed under the action of regional geology are summarized, and further the influence degree of the potential pollutants, especially main pollution elements such as nitrogen, phosphorus and the like, on the lake water quality under different geological backgrounds is determined, so that the pollution source of the lake water pollution is accurately determined.
Drawings
FIG. 1 is a schematic view of the migration of contaminants according to the present invention.
FIG. 2 is a diagram showing the distribution of stratum in the Er-Hai river basin in example 1.
FIG. 3 is a bitmap of sampling points of rock samples in the vicinity of the village to be raised, the village to be dug and the village to be newly raised in example 1.
FIG. 4 is a diagram showing sampling points of rock samples in the vicinity of the sea and west reservoir in example 1.
FIG. 5 is a sampling point diagram of the rock sample of the Xanthium sibiricum group in example 1.
FIG. 6 is a graph showing the total nitrogen and total phosphorus contents in the east portion of the Erhai in example 1.
Figure 7 is a bitmap of groundwater sample sampling points in example 1.
FIG. 8 is a flow chart of groundwater sampling in example 1.
Fig. 9 is a surface water sample sampling point bitmap in example 1.
FIG. 10 is a sampling point diagram of the sediment and the water sample on the sediment in example 1.
FIG. 11 is a plot of the manganese, total phosphorus and nitrogen content of the overlying samples of the sludge in example 1.
FIG. 12 is a graph comparing the contents of manganese, total phosphorus and nitrogen in the mud sample of example 1.
Detailed Description
Reference will now be made in detail to various exemplary embodiments of the invention, the detailed description should not be construed as limiting the invention but rather as a more detailed description of certain aspects, features and embodiments of the invention. It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Further, for numerical ranges in this disclosure, it is understood that each intervening value, between the upper and lower limit of that range, is also specifically disclosed. Every intervening value, to the extent any stated value or intervening value in a stated range, and any other stated or intervening value in a stated range, is encompassed within the invention. The upper and lower limits of these smaller ranges may independently be included or excluded in the range.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Although only preferred methods and materials are described herein, any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present invention.
As used herein, the terms "comprising," "including," "having," "containing," and the like are open-ended terms that mean including, but not limited to.
The detection and analysis in the embodiment of the invention are carried out according to relevant standard specifications, and the specific standards are shown in tables 1-3.
TABLE 1 groundwater monitoring factor detection method, detection limits and evaluation criteria
TABLE 2 detection method, detection limit and evaluation standard of bottom sediment reference soil monitoring factor
TABLE 3 detection method, detection limit and evaluation standard of surface water monitoring factor
Example 1
In the embodiment, by taking the pu-er sea as an example, the pollution source of the pu-er sea water body pollution is determined:
(1) Sampling of rocks near Er-Hai river basin
The stratum around the Er Hai is relatively complete in all times, and the stratum from formerly Han Wu system to the fourth system is exposed. The frontier frigid armed system cang shan group (containing higher phosphorus and copper) is distributed in the point cang shan zone; the lower ancient world only sees the Ordovician strata, mud basins (containing high manganese and phosphorus), stone charcoal (containing high manganese, phosphorus and carbon) of the upper ancient world the di-stacked system (the basalt and tuff contain extremely high copper, titanium and niobium) is exposed in east and northeast regions of the Er-Hai; the stratums of sanyuan, dwarfic and chalk (manganese, aluminum, arsenic, gold, copper and other elements with high background) in the middle living world are mainly distributed in the north east and the north west of the pu-er sea (see figure 2).
According to the geological conditions around the Erhai, the phosphorus-containing stratum (the lotus flower yeast group under the mud basin system) of growing villages, digging colors and going to the new villages in the North and the east of the Erhai is deployed and developed (D) 1 l) and sand well group (D) of mud basin system 2+3 ) A strip of the layout rock geophysical prospecting profile 1 (see fig. 3); phosphorus-containing stratum of Eryuan county in northern West of Er Hai (mud basin system of Loranthus amabilis (D) 1 l) and sand well group (D) of mud basin system 2+3 ) Lay 1 piece of rock geophysical prospecting section (see fig. 4); 1 rock geochemical exploration profile is laid in a palygorskite metamorphic rock stratum in the west of the Er-Hai (see figure 5), 26 rock geochemical samples, 11 rock geochemical samples and 5 rock geochemical samples are respectively taken from the 3 profiles, and the possibility that phosphorus and heavy metal elements in the stratum enter underground water under the chemical action, the physical action and the biological action and finally flow into the Er-Hai is verified.
The sampling method comprises the following steps: sampling is carried out within the range of 1/10 of the line distance of the measured sampling points, 3 sampling points are combined into one sample, various pollutions are avoided during sampling, and the sampling points can be abandoned when the sampling is not carried out in the situations of waste stone heaps, swamps, collapsed materials, river bed heaps, paddy fields and the like, but the sampling points are noted in records. The medium with the same attribute and the substance at the same layer position are collected in the same working area as much as possible, and the fine-grained substance in the soil leaching layer-matrix layer at the depth of 10cm-50cm of the earth surface is generally collected. The weight of the collected sample ensures that the weight of a single sample after being screened (40 meshes-60 meshes) is not less than 100g, the weight of a sample needing to be tested for trace metal elements is not less than 200g.
The measurement and positioning of the sampling points are carried out as required by ZBD/0002 "physical probing measurement Specification".
Detecting and analyzing the sampled samples, and counting the analysis results, wherein a map of the total nitrogen and total phosphorus contents of the east section of the Er-Hai is shown in FIG. 6; the average value of each element of the stratum around the Er-Hai river basin is shown in the table 4; the results of detecting various elements of the samples (sampling positions shown in FIG. 9) of the manganese-containing rock (YH-50) and diabase (YH-51) are shown in Table 5.
TABLE 4 average value of each element in stratum around Er-Hai river basin
TABLE 5 table of the results of testing various elements of the manganese-containing rock and diabase
As can be seen from the contents of fig. 6, table 4 and table 5: the general change trends of arsenic, mercury, cadmium, lead, nickel, copper, total nitrogen, total phosphorus and available phosphorus of all the formations are positively correlated. Wherein:
(1) total nitrogen and total phosphorus content: the mud pot system of the lotus koji group (D) 1 l) the total nitrogen content (997.17 mg/kg) of the stratum rock is about 3.08-5.04 times higher than that of other stratum rocks; two-stack basalt group (P beta) and mud basin system upper part system (D) 2+3 ) The total phosphorus content of the stratum rock is about 2.04 to 5.41 times higher than that of other stratum rocks, wherein the average value of the total phosphorus of the stratum rock of the two-pack basalt group (P beta) is 1256.33mg/kg, and the upper part (D) of a mud basin system 2+3 ) Total phosphorus of stratum rockThe mean value was 1283.00mg/kg.
The stratum is mainly distributed in east (area of Changyu village) and north of Er Hai.
(2) Content of heavy metals nickel and copper: two-stack basalt group (P beta), mud basin system middle upper system (D) 2+3 ) The mud basin system is connected with lotus koji group (D) 1 l) mud basin system of lower mountain set (D) 1 q) and mud basin system lower health corridor group (D) 1 k) The nickel and copper contents of the two-pack basalt group (P beta) are the highest, and are respectively 70.47mg/kg and 202.36mg/kg.
The stratum is mainly distributed in east (area of Changyu village) and north of Er Hai.
(3) Content of heavy metal lead: the lead content of the metamorphic rocks of the xanthium and martial system is the highest, and is 22.88mg/kg.
Metamorphic rock of mountain group of early chills system
Mainly distributed in the west of the er hai.
(4) Upper part of mud basin system (D) 2+3 ) The manganese content of the siliceous manganese-containing rock in the stratum is up to 8729mg/kg, and the siliceous manganese-containing rock is mainly distributed in east China of the Er-Hai (Changyu village).
(2) Groundwater sampling in Er-Hai river basin
And (3) acquiring instantaneous water samples according to monitoring point positions (see figure 7), and sampling underground water strictly according to the technical specification of underground water environment monitoring (HJ/T164-2004), wherein a sampling flow chart is shown in figure 8. The collected underground water sample is detected, and the detection result is shown in table 6.
TABLE 6 statistical table of groundwater sample monitoring results
By statistically analyzing the results of detection of pH, chemical oxygen demand, total phosphorus, carbonate, total nitrogen, ammonia nitrogen (in terms of N), arsenic, copper, zinc, chromium, cadmium, lead, nickel and mercury of the collected groundwater sample, wherein chemical oxygen demand and mercury are Not Detected (ND), it was found that:
(1) the total nitrogen content of DXS-2, DXS-3, DXS-4 and DXS-5 was higher, and the highest was DXS-4 (7748.00. Mu.g/L), and the samples were mainly distributed in the east of Er-Hai.
Wherein the water-bearing stratum to which DXS-2 and DXS-4 belong is mud basin system lower health corridor group (D) 1 k) Mud-mixing basin system lower green mountain group (D) 1 q), the water-bearing stratum to which DXS-3 and DXS-5 belong is mud basin system lower system Qingshan group (D) 1 q) and lotus koji group (D) under mud pot system 1 l). The mud pot system of the lotus koji group (D) 1 l) the total nitrogen content of the formation rock is higher than that of other formation rocks, and DXS-3 and DXS-5 have higher total nitrogen content and are related to the water-bearing formation.
(2) DXS-6 sample had the highest total phosphorus, carbonate and zinc contents of 201.69. Mu.g/L and 615.00. Mu.g/L, respectively. Wherein, the total phosphorus content is 7.73 to 28.12 times higher than that of other underground water, and the carbonate content is 8.20 to 27.95 times higher than that of other underground water. The samples were distributed in the east of the er sea. The water-bearing stratum is mainly a mud basin system upper system (D) 2+3 ). Upper part of mud basin system (D) 2+3 ) The total phosphorus content of the stratum rock is higher than that of other strata, and the total phosphorus content of the sample DXS-6 (Changyu village) is higher than that of other groundwater, and is related to the stratum rock.
(3) The ammonia nitrogen (calculated as N) and arsenic content of the thermal spring DXS-7 and DXS-8 are higher than those of other groundwater, and the thermal spring is positioned near a fracture zone and distributed in the northern part of the Erhai and is related to the geochemical behavior of the constructed thermal spring.
(3) Sampling water and water system sediments on the surface of Erer's sea
The surface water sampling work is carried out by combining the water system distribution condition gathered by the Er-Hai river basin, 14 surface water samples are collected totally, and the sampling position is shown in figure 9.
The surface water sampling method comprises the following steps: sampling according to technical Specification for monitoring surface water and sewage (HJ/T91-2002), and collecting instantaneous water samples; for oil sampling, a possible oil film is firstly damaged before sampling, a glass container is arranged in a support of a water sampler by using a vertical water sampler and is placed to a depth of 300mm, and the glass container is lifted upwards while water is sampled; the required water sample amount is shown in table 4-4 of surface water and sewage monitoring technical Specification (HJ/T91-2002).
The collected groundwater samples were tested (if the samples contained sedimenting solids, they should be separated out) and the test results are shown in table 7.
TABLE 7 statistical table of surface water sample test results
Through detecting pH, arsenic, mercury, lead, cadmium, chromium, copper, zinc, nickel, manganese, total nitrogen, ammonia nitrogen, total phosphorus and chemical oxygen demand flowing into a pu' er sea surface water system sample, analyzing and counting measured data, finding:
(1) the sample DB-14 is a stream ditch water system near a sewage treatment plant in the west of the pu-er sea, and the contents of various indexes such as copper, zinc, total nitrogen, total phosphorus and the like are higher than those of other surface water systems.
(2) The total nitrogen content of the samples DB-9 and DB-8 is higher than that of other water system samples embedded into the surface of the Er-Hai, the total nitrogen content of the sample DB-9 is 7.15mg/L, and the total nitrogen content of the sample DB-8 is 5.09mg/L. Two samples were collected from the east of the Er-Hai, with DB-9 in the area of Changyu villages.
When surface water is adopted, water system sediments are sampled at the same time, and the method comprises the following steps: sampling by adopting sampling professional equipment, wherein 30cm of non-disturbed water system sediment is sampled at a designated position, and 3 samples are sampled at every 10cm from top to bottom at one point; the pretreatment method of the water system sediment measurement sample comprises the following steps: original sample → drying → rubbing → passing through 60 mesh sieve → 20g of shrinkage is extracted and analyzed → the rest is left as secondary sample. The collected water system sediments 13, wherein DB-11 and DB-12 are thermal spring water system sediments, and the detection results are shown in Table 8.
TABLE 8 statistic table of testing results of sediment samples of Er Hai surface water system
Through detecting pH, arsenic, mercury, lead, cadmium, chromium, copper, zinc, nickel, manganese, total nitrogen (counted by N), ammonia nitrogen (counted by N) and total phosphorus of the sediment of the er sea water system, analyzing and counting data results (table 6.3-1), the following results are found: the water system sediments on the surface of the Er-Hai have high contents of total nitrogen and total phosphorus, wherein the samples with the highest total nitrogen are DB-10 reaching 22273mg/kg, and the samples with relatively high contents of total phosphorus are DB-8 (1801 mg/kg), DB-4 (1692 mg/kg), DB-3 (1526 mg/kg) and DB-9 (1487 mg/kg), wherein farmland and towns around DB-10, DB-8, DB-4 and DB-3 are more and have certain influence on the total phosphorus and total nitrogen of surface water; the higher total nitrogen content of DB-9 is associated with surrounding phosphorus-containing formations.
(4) Sampling pu' er sea bottom mud and water covering on the bottom mud
And (3) sampling bottom mud in a Erhai lake zone corresponding to the surface water sampling river, wherein the sampling position is shown in figure 10.
During sampling, a stainless steel columnar sediment sampler is adopted, the sample is adopted as a non-disturbance sample, the water sample is obtained by covering water on the sediment by 20-30cm, the covering water is sucked out by a siphon method, the sediment is sequentially withdrawn from an organic glass tube, the columnar sediment is divided according to the condition that every 10cm is a layer, bottom mud samples of 0-10cm, 10-20cm and 20-30cm are respectively adopted, the cut sample is placed in a PVC self-sealing bag and is placed in a refrigerator for storage. The collected Erhai substrate sludge and the substrate sludge are detected to have water covering, and the results are shown in tables 9 to 11.
TABLE 9 Table of the results of testing Er submarine mud samples
TABLE 10 table of the results of testing pu' er sea bed mud samples
TABLE 11 Table of results of testing water samples covered (20-30 cm) with sediment in Er submarine
The method comprises the following steps of carrying out detection on arsenic, mercury, cadmium, nickel, lead, copper, chromium, zinc, manganese, hexavalent chromium, organic matters, total phosphorus and total nitrogen content of a taken substrate sludge sample and an overlying water sample, and carrying out statistical analysis on a detection result to obtain the following result:
in the detection results of the water sample covered on the sediment, the sediment (0-10 cm), the sediment (10-20 cm) and the sediment (20-30 cm), the elements with higher content and larger change are as follows: manganese, total nitrogen and total phosphorus.
(1) Manganese:
the sample with the highest average manganese content in the sediment sample is DN-4 (1369 mg/kg), and the 2 samples with the lowest average manganese content are DN-8 (841 mg/kg) and DN-3 (926 mg/kg); the 3 samples with the highest manganese content in the bottom sediment covering water samples are DN-8 (937 mu g/L), DN-1 (989 mu g/L) and DN-3 (1182 mu g/L).
(2) Total phosphorus:
samples with higher average total phosphorus content in the sediment samples are DN-4 (1150 mg/kg), DN-6 (1099 mg/kg) and DN-7 (1067 mg/kg); the bottom sediment is covered with a water sample with the highest total phosphorus content of DN-4 (250 mu g/L).
(3) Total nitrogen:
samples with higher average total nitrogen content in the sediment samples are DN-1 (3150 mg/kg), DN-2 (1962 mg/kg), DN-4 (1954 mg/kg) and DN-9 (1933 mg/kg); samples with higher total nitrogen content in the overlying water of the sediment were DN-1 (3420. Mu.g/L) and DN-9 (3070. Mu.g/L).
FIG. 11 is a graph comparing the manganese content, the total phosphorus content and the nitrogen content of water samples coated on bottom mud; FIG. 12 is a comparison of the contents of bottom sludge-like manganese, total phosphorus and nitrogen.
As can be seen from fig. 11 and 12, the manganese content trend of the sediment sample and the overlying water sample is inversely proportional; the total phosphorus change trend of the sediment sample and the overlying water sample is in direct proportion; the nitrogen change trends of the sediment sample and the overlying water sample are in direct proportion.
The invention samples the rock in the stratum containing the pollution elements near the Er-Hai river basin, which flows into the underground water, the surface water sediments, the bottom mud of the inflow opening and the water covering on the bottom mud, measures the collected sample, and determines the pollution source of the Er-Hai water body by comparing the analysis results of all pollutants.
Through earlier data collection research and sample collection, the existence of phosphorus-containing and manganese-containing stratums in the eastern region of the Er-Hai, the western reservoir of the North region of the Er-Hai and the Jian lake is identified from the field, and the water quality of the Er-Hai in rainy season close to the areas contains higher phosphorus than other places.
From analysis and test results of 3 rock chemical profiles distributed around the Erhai and 88 collected samples, the background value of phosphorus and nitrogen contained in the formation around the Erhai is high, and particularly the content of the formation zone of the Erdong basalt and the formation zone of the carbonate is 2-3 times that of the formation of other formations; the total phosphorus content of underground water in the corresponding phosphorus-containing stratum is 13 times of that of underground water in other strata, and the underground water content of the carbonate rock stratum is 15 times of that of other strata; can determine that the stratum has certain influence on the water quality of the er sea.
According to the detection result of the hot spring sample, the content of ammonia nitrogen in the hot spring water is 11 times that of other samples, and the content of heavy metal arsenic is 15 times that of other groundwater samples, which shows that the hot spring of the pu-er sea drainage basin brings some pollution elements from the deep part to enter the water body of the pu-er sea drainage basin, and the movable structure has great influence on the water pollution of the pu-er sea drainage basin.
From the analysis results of ten main river estuary water samples and bottom mud samples flowing into er sea and corresponding er sea lake bottom mud samples, the pollutant content in the river and the corresponding lake bottom pollutant content are in a linear relationship, which indicates that the lake bottom pollutants are mainly brought in by the river; the rivers with higher pollutant content in the west and north are mainly distributed in agricultural non-point source pollution areas and urban land areas, and the rivers with higher pollutant content in the east are mainly distributed in areas exposed by phosphorus-containing and manganese-containing stratums in the growing villages.
According to the analysis result of the sediment sample of the pu-er sea, the highest organic matter content of 46.9mg/Kg is positioned at the river inlet of the pu-er river in the west China, and the lowest organic matter content of 23.2g/Kg is positioned near the river junction in the north of the pu-er sea; the highest total phosphorus is 1150.3mg/Kg, the lowest total phosphorus is 739.7mg/Kg, and the highest total phosphorus is positioned near the river junction in the northern village; the highest total nitrogen content is 3149.7mg/Kg, and is positioned near the afflux inlet of the xi' er river, and the lowest total nitrogen content is 1170.0mg/Kg, and is positioned near the afflux inlet of the north of the Er-Hai.
According to the analysis result of the water sample of the main river flowing into the er-sea, the total phosphorus is 1801mg/Kg at most and 1077mg/Kg at least, and the total phosphorus in the phosphorus-containing stratum of the growing village is 1487mg/Kg which is 1.38 times of the minimum 1077 mg/Kg; the highest ammonia nitrogen concentration is 129mg/Kg, the lowest ammonia nitrogen concentration is 1.46mg/Kg, and the ammonia nitrogen concentration at the phosphorus-containing stratum of the growing village is 129mg/Kg, which is 88 times of the lowest ammonia nitrogen concentration at 1.46 mg/Kg; the maximum total nitrogen is 872mg/Kg, the minimum total nitrogen is 442mg/Kg, and 872mg/Kg of total nitrogen at the phosphorus-containing stratum of Yangchun is 1.97 times of the minimum total nitrogen at the phosphorus-containing stratum of 442 mg/Kg.
In conclusion, the pollution elements in the bottom sediment of the pu-er sea come from human life pollution, and a considerable part of the pollution elements come from the stratum; the pollution elements of the water body of the Er-Hai come from the stratum.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (10)
1. A method for determining a pollution source of lake water body pollution is characterized by comprising the following steps: sampling rocks of a stratum containing a pollution element near a lake basin, inflow of underground water into the lake, inflow of surface water and water system sediments into the lake, bottom mud of an inflow port of the lake and water covering on the bottom mud, measuring the collected samples, and determining the pollution source of the water body pollution of the lake by comparing the analysis results of all pollutants and combining basin non-point source pollution investigation.
2. The method for determining the source of pollution to the water body in the lake according to claim 1, wherein the rock of the stratum containing the pollution elements near the lake basin is rock in the stratum with the background value of the pollution elements exceeding the Clark value, which is determined by comprehensive research on geological reports of the lake basin region, geological reports of regional minerals, geochemical anomalies of regional rock and research results of various institutes at home and abroad.
3. The method for determining the pollution source of the lake water body pollution according to claim 1, wherein the method for sampling the rocks of the stratum containing the pollution elements near the lake basin comprises the following steps: sampling within the range of 1/10 of the line distance of the determined sampling points, combining 3 sampling points into one sample, and collecting fine-grained substances in a soil leaching layer-matrix layer at the depth of 10cm-50cm from the earth surface.
4. The method of claim 1, wherein the inflow groundwater of the lake is groundwater which is determined whether the pollutants are brought from deep part of the earth by the tectonic activity and finally discharged into the lake or not according to the comprehensive research of regional geological reports, regional hydrogeological reports, regional tectonic distribution conditions and research results of domestic and foreign institutes.
5. The lake inflow groundwater of claim 4, wherein the lake inflow groundwater is characterized by knowledge of topography, geological structure, lithology and distribution of the lake and its surroundings, and distribution of aquifers and relative water barriers; finding out the underground water type, the burying condition, the chemical characteristics of the underground water, the underground water supply, the runoff and drainage condition and the exploitation and utilization condition of the hydrogeological unit; the cause type, the exposure position, the formation condition, the spring water flow and the water quality of spring water in the hydrogeological unit.
6. The method for determining the pollution source of the lake water body pollution according to claim 1, wherein the sampling method of the inflow underground water of the lake comprises the following steps: and (4) acquiring instantaneous water samples according to the monitoring point positions, and making sampling records and sample uniqueness identifications.
7. The method for determining the pollution source of the lake water body pollution, according to the claim 1, wherein the lake inflow surface water and the water system sediments are determined according to the water system distribution characteristics of the lake basin and the known branch distribution condition; the basic principle is as follows: sampling points are arranged on the area to control the abnormal range, the abnormal position is defined, and the abnormal distribution and the combination characteristic are found out.
8. The method for determining the pollution source of the lake water body pollution according to claim 1, wherein the method for sampling the lake inflow surface water sediments comprises the following steps: taking 30cm of non-disturbed water system sediment, taking one sample every 10cm from top to bottom, and taking 3 samples at one point.
9. The method for determining the pollution source of the lake water body pollution according to claim 1, wherein the method for sampling the bottom sediment and the water covering the bottom sediment of the lake inflow opening comprises the following steps: adopting a non-disturbance sample, inserting a tubular sampler into a sampling point, sucking out an overburden water sample 20-30cm above the sediment by a siphon method, sequentially withdrawing the sediment from the sampler, dividing the sediment by every 10cm, and respectively adopting sediment samples of 0-10cm, 10-20cm and 20-30 cm.
10. The method for determining the pollution source of the lake water body pollution according to claim 1, wherein the pollutants comprise: total phosphorus, ammonia nitrogen, total nitrogen, organic matters and heavy metals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210783852.7A CN115407034A (en) | 2022-07-05 | 2022-07-05 | Method for determining pollution source of lake water body pollution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210783852.7A CN115407034A (en) | 2022-07-05 | 2022-07-05 | Method for determining pollution source of lake water body pollution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115407034A true CN115407034A (en) | 2022-11-29 |
Family
ID=84157345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210783852.7A Pending CN115407034A (en) | 2022-07-05 | 2022-07-05 | Method for determining pollution source of lake water body pollution |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115407034A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115655981A (en) * | 2022-12-14 | 2023-01-31 | 成都理工大学 | Pollutant migration test system and method under water flow and water flow force alternation of submerged lake |
-
2022
- 2022-07-05 CN CN202210783852.7A patent/CN115407034A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115655981A (en) * | 2022-12-14 | 2023-01-31 | 成都理工大学 | Pollutant migration test system and method under water flow and water flow force alternation of submerged lake |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Xia et al. | A combined field and modeling study of groundwater flow in a tidal marsh | |
| Bartak et al. | Shortcomings of the RBF pilot site in Dishna, Egypt | |
| Petalas et al. | Current conditions of saltwater intrusion in the coastal Rhodope aquifer system, northeastern Greece | |
| CN115407034A (en) | Method for determining pollution source of lake water body pollution | |
| Saha et al. | The aquifer system and evaluation of its hydraulic parameters in parts of South Ganga Plain, Bihar | |
| Subba Rao | Groundwater prospecting and management in an agro-based rural environment of crystalline terrain of India | |
| Winter et al. | The effect of terrace geology on ground‐water movement and on the interaction of ground water and surface water on a mountainside near Mirror Lake, New Hampshire, USA | |
| Andrea et al. | Mercury in the unconfined aquifer of the Isonzo/Soča River alluvial plain downstream from the Idrija mining area | |
| Vorlicek et al. | Quantitative hydrogeological studies of the Treviso alluvial plain, NE Italy | |
| CN112330485B (en) | Method and system for storing water resources by using underground flood-flushing fan | |
| Fnais | Geophysical characteristics of Wadi Hanifah water system, Riyadh, Saudi Arabia. | |
| Litaor et al. | Hydrological control of phosphorus mobility in altered wetland soils | |
| Imbrigiotta et al. | Distribution of chlorinated volatile organic compounds and per-and polyfluoroalkyl substances in monitoring wells at the former Naval Air Warfare Center, West Trenton, New Jersey, 2014–17 | |
| Banks et al. | The hyporheic zone | |
| Ellis | The impact of urban groundwater upon surface water quality: Birmingham-River Tame study, UK | |
| Moran et al. | Characterizing groundwater recharge: A comprehensive isotopic approach | |
| Schalla et al. | Interim characterization report for the 300 Area process trenches | |
| Fiore et al. | Distribution of chlorinated volatile organic compounds and per-and polyfluoroalkyl substances in groundwater and surface water at the former Naval Air Warfare Center, West Trenton, New Jersey, 2018 | |
| Tomlinson | Identifying potential areas suitable for managed aquifer recharge in Saldanha bay, Western Cape | |
| Kant et al. | Qualitative Analysis of Groundwater from Nandgaon Peth Village District Amravati, Maharashtra | |
| Cameron | Groundwater Pollution from Onsite Disposal Systems and Other Land Uses on the ‘Ewa Plain, O’ahu | |
| Anechana | Groundwater potential assessment of Kintampo North Municipality of Ghana, using the electromagnetic method and vertical electrical sounding | |
| Aviles | A groundwater basin multidisciplinary approach to conceptualize subsurface flow and trace nitrate contamination sources. Lake Titicaca, Bolivia | |
| Palumbo-Roe et al. | Characterising the hyporheic zones in the Skerne catchment | |
| Miepamo et al. | Aquifer Vulnerability Assessment in Ekowe, Bayelsa State, Niger Delta Area, Nigeria using GIS-Based on Drastic Method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |