CN104043644B - A kind of layered circulation that utilizes cleans the method for administering soil pollution - Google Patents
A kind of layered circulation that utilizes cleans the method for administering soil pollution Download PDFInfo
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- CN104043644B CN104043644B CN201410242179.1A CN201410242179A CN104043644B CN 104043644 B CN104043644 B CN 104043644B CN 201410242179 A CN201410242179 A CN 201410242179A CN 104043644 B CN104043644 B CN 104043644B
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Abstract
The present invention is that a kind of layered circulation that utilizes cleans the method for administering soil pollution, discloses a kind of method that contaminated soil original place adopts engineering mode to administer.The method, by arranging infiltration pipe network, the flood pattern of tie surface and sewage disposal system on earth's surface and ground lower leaf, adopts low pressure to pour water and permeates the method for cleaning, cleaned out by the pollutant in soil.The method first bears by last layer infiltration pipe network the function pouring into clear water to underground in implementing, the function of collecting contaminant water born by lower one deck soakaway trench net, successively clean contaminated soil from top to bottom, the soil laying infiltration pipe network until all cleans and reaches required standard thereupon.The heavy metal that sewage disposal system is separated and pollutant can be recycled or do harmless treatment.The present invention fundamentally solves the drawback that existing contaminated land administering method exists, and equipment investment is little, cleaning efficiency is high, the cleaning of pollutant is more thorough, has possessed very high popularizing application prospect.
Description
Technical field
The invention belongs to environmental protection technical field, particularly the recovery technique of polluted soil, be that one utilizes layered circulation cleaning, multi-stage separation treatment, administer the engineering method of soil pollution fast.The method is also applicable to the pollution control of refuse landfill simultaneously.
Background technology
Due to urban sprawl, some insecticide factories, chemical fertilizer factory, chemical plant etc. being originally distributed in urban periphal defence suburb become downtown area, when changing land use, find that soil can not, as the place of human lives, inhabitation and activity, must be carried out administering and repairing and could utilize by heavy metal and organic matter severe contamination.Some farmland is owing to being subject to the pollution of chemical enterprise or mining smelting enterprise's effluent sewerage and waste gas for a long time in addition, the crops that growth harmful substance exceeds standard, and also must administer and just can cultivate.Town and country refuse landfill diffusate severe contamination soil and groundwater source.Cause for above-mentioned reasons containing heavy metal and poisonous and harmful substance severe overweights such as chromium, lead, mercury, cadmium, arsenic in these soil, these harmful substances are mostly dissolved in water, permeate the ground through the time of long-term even decades.
Administering soil pollution is a world-class difficult problem, and relate to physics, chemistry, microorganism, multiple field such as biological prosthetic, the technology really utilized on a large scale is at present less, and invests huge, consuming time longer.
Emergency burial Seal treatment was mostly adopted to the process of contaminated soil in the past, or removed the way of burying Seal treatment to strange land, not only fundamentally can not solve soil contamination problem, and invested length large, consuming time, also polluted transfer or other hidden danger.
The applicant is in earlier application disclose same " a kind of layered circulation that utilizes cleans the method for administering soil pollution " (application for a patent for invention number 201310267950.6) on July 1st, 2013, and patent retrieval referral centre of State Intellectual Property Office has carried out retrieving with regard to this application on October 21st, 2013 and provided search report (search report numbering G1310430).Retrieval conclusion is that claim 1-6 has novelty, creativeness and practicality, meets the regulation of Patent Law Article 22.But this application illustrates cause rejecting because lacking accompanying drawing and accompanying drawing in checking process.Given this applicant requires again to file an application in first priority.
Summary of the invention
The present invention be directed to existing engineering Problems existing, provide a kind of low pressure to pour water and permeate cleaning soil, once input is steady in a long-term runs, and layered circulation cleans, the method for multi-stage separation pollutant control soil pollution.
A kind of layered circulation that utilizes of the present invention cleans the method for administering soil pollution, comprises
Early-stage preparations:
Flood pattern and sewage disposal system are set on the ground, wherein, flood pattern comprises water-filled pool and water flooding pump station, sewage disposal system comprises water collecting pump, cesspool, sewage-treatment plant and pollutant holding vessel, and the water out up to standard of sewage disposal system is connected with the water-filled pool of flood pattern with valve by pipeline.
The infiltration pipe network that multilayer is made up of to the soakaway trench be connected in length and breadth level is set in earth's surface and underground, between the infiltration pipe network of earth's surface to the bottom, depth direction is provided with sump, each layer infiltration pipe network catchment end respectively by respective tube connector and valve and the hoistway that catchments through, the water injection end of each layer infiltration pipe network is respectively by respective tube connector and valve access flood pattern on the ground, each layer pipe network interlamellar spacing 0.5-1.5 rice, sump is connected with the water collecting pump of sewage disposal system.
The tube wall of described soakaway trench is provided with hole.
Treatment step:
First, the contaminated soil that cleaning improvement surface layer and underground ground floor seep water between pipe network, be communicated with flood pattern by earth's surface infiltration pipe network, evenly clear water is poured into contaminated soil, underground ground floor infiltration pipe network is communicated with sump, contaminant water comes together in sump through underground ground floor infiltration pipe network, cleans the contaminated soil between earth's surface to underground ground floor infiltration pipe network; The contaminant water of sump is incorporated into sewage-treatment plant by water collecting pump again and carries out purified treatment, water up to standard after process introduces the water-filled pool of flood pattern, recycle, pollutant through sewage-treatment plant purification separation is collected simultaneously, the change of water quality of underground water must be monitored, until water quality pollutant is up to standard in wash cycles process.
Step 2, the contaminated soil that cleaning improvement underground ground floor infiltration pipe network and subbasement seep water between pipe network, at this moment, underground ground floor infiltration pipe network is communicated with flood pattern, evenly clear water is poured in contaminated soil, the pipe network that seeped water by subbasement is communicated with sump, and contaminant water comes together in sump through second layer infiltration pipe network, cleans the contaminated soil that underground ground floor infiltration pipe network and subbasement seep water between pipe network; The contaminant water of sump is incorporated into sewage-treatment plant and carries out purified treatment, the water-filled pool that water up to standard after process introduces flood pattern recycles, pollutant through sewage-treatment plant purification separation is collected simultaneously, the change of water quality of underground water must be monitored, until water quality pollutant is up to standard in wash cycles process.
According to the mode of step 2, successively contaminated soil cleaning and the dirty water decontamination handles are carried out to following soil horizon from top to bottom, until require that the soil in treating depth is up to standard.
Such scheme also comprises: at the peripheral embedding division board of processed contaminated soil or barrier film, division board comprises precast concrete or plastic plate, metallic plate.
The method of embedding concrete division board is longitudinal arrangement one or several high-pressure water pipe in division board, high-pressure water pipeline front end lateral connection high pressure water nozzle bottom division board, high-pressure water pipe is connected with high-pressure hydraulic pump, and division board is by lifting mode insert into stratum under high-pressure water jet.
For requiring that pollution administration depth of soil is greater than the situation of 5 meters, during early-stage preparations, evenly lay infiltration vertical shaft in the gap of underground pipe network along depth direction, infiltration vertical shaft is greater than the under ground portion of 5 meters for infiltration well casing in the degree of depth, infiltration vertical shaft is connected with sewage disposal system; After more than 5 meters soil layers have been administered in cleaning, in soil, pour into clear water through basecoat infiltration pipe network, contaminant water infiltrates vertical shaft, cleans the contaminated soil of part below underground bottom infiltration pipe network; Contaminant water is incorporated into sewage-treatment plant through infiltration vertical shaft and carries out purified treatment, water up to standard after purified treatment introduces the water-filled pool of flood pattern, recycle, pollutant through sewage-treatment plant purification separation is collected simultaneously, the change of water quality of underground water must be monitored, until water quality pollutant is up to standard in wash cycles process.
Described soakaway trench adopts the punching bellows of diameter 60-110mm, and perforate density is 50-75cm
2/ m, outsourcing filter course; Filter course comprises ore charge, non-woven fabrics, chemical fibre or palm bark, screen pack, and soakaway trench adopts arranged in parallel, and spacing is at 5-15 rice.Described infiltration vertical shaft is the filter well adopting diameter 800-1500mm, more than 5 meters employings are not seeped water well casing, less than 5 meters adopt permeable well casing, and infiltration well casing outsourcing filter course, filter course comprises ore charge, non-woven fabrics, chemical fibre or palm bark, screen pack.Described flood pattern also comprises water filling heater.Described sewage-treatment plant is multi-stage sewage treatment device, comprises molecular sieve ion-exchange processing device or anti-seepage membrane treating apparatus fiting chemical, biological treatment agent and device.
Such scheme also comprises:
Method of the present invention has following remarkable result;
First, special is the feature permeated the ground with water source for pollutant, by special earth's surface, underground pipe network design, tie surface flood pattern and sewage disposal system, layering cleaning, isolation of purified process are carried out on the spot to contaminated soil, the pollutant in soil is administered fast, and the special collection focusing on waste water reuse and pollutant in governance process, save water source, avoid the secondary pollution of pollutant.
Its two, for seriously polluted region, propose underground quarantine measures, contaminated soil and Soil Surrounding separated, prevent sewage from exosmosing and cause secondary pollution.Give the special construction method of precast concrete simultaneously, improve efficiency of construction.
Its three, coordinate infiltration vertical shaft mode to clean for deep layer contaminant water (less than-5 meters, soil), vertical shaft can reach more than-10 meters deeply, until underground impermeable stratum, substantially realizes the management goal under full formation condition.
The present invention fundamentally solves the drawback that existing administering method exists in a word, and equipment investment is little, cleaning efficiency is high, the improvement of pollutant is more thorough, has possessed very high popularizing application prospect.
Accompanying drawing explanation
Fig. 1 is that contaminated soil is by water proof enclosure wall isolation schematic diagram
Fig. 2 a, Fig. 2 b, Fig. 2 c are concrete prefabricated water proof plate top view, front view, side view respectively
Fig. 3 is soakaway trench network arrangements schematic diagram
Fig. 4 is that schematic diagram arranged by infiltration vertical shaft
Fig. 5 is ground auxiliary facility schematic flow sheet
In figure: 1 is water proof enclosure wall, 2 is contaminated soils, 3 is cleaning soils, 4 is high-pressure water pipe, 5 is I-steel, 6 is hangers, 7 is high pressure water jet pipes, 8 is division boards, 9 is water flooding pump stations, 10 is seepage in underground pipe networks, 11 is earth's surface infiltration pipe networks, 12 is tube connector and valve, 13 is water-filled pool (fillings), 14 is water injection wells, 15 is sumps, 16 is water collecting pumps, 17 is cesspool (fillings), 18 is infiltration vertical shafts, 19 is pipe of cements, 20 is filter sand pipe of cements, 21 is-5 meters of cut-off rules, 22 is heaters, 23 is switchgear houses, 24 is sewage second-level process, 25 is pollutant holding vessels, 26 is sewage coagulations.
Detailed description of the invention
With reference to accompanying drawing 1-5, a kind of layered circulation that utilizes cleans the method for administering soil pollution, comprises
Early-stage preparations:
Stratified sampling detection is carried out to pollution plot, determines that harmful pollutants kind, content, pollutant infiltrate depth of soil etc., require according to national standard the treating depth determining soil simultaneously.Ditching pipeline burying machine is adopted successively to bury multilayer infiltration pipe network from bottom to top underground on earth's surface and underground.Clear water function is poured in the oriented soil of earth's surface soakaway trench netting gear; The change of seepage in underground pipe network foundation treatment step is first born and is poured into clear water function, and then bears the function of collecting sewage in soil.The infiltration pipe network of under ground portion is made up of water injection pipe, collector pipe and Duo Gen soakaway trench.Water injection pipe is connected with the water-filled pool of valve with ground flood pattern through tube connector, and collector pipe is in the sump of valve access depth setting, is provided with water collecting pump and is connected with the sewage-treatment plant on ground in sump.Many soakaway trench uniform parallel arrangements, between water injection pipe and collector pipe, one end access water injection pipe, other end access set water pipe.The density of pipe network is arranged and should be visited sample analysis result in detail according to soil permeability characteristic and determine, general upper and lower two-layer 0.5-1.5 rice of being separated by, with layer soakaway trench spacing 5-15 rice, the distance between water injection pipe and collector pipe and the length of soakaway trench are arranged according to the landform size of handled contaminated land.
Flood pattern and sewage disposal system are set on ground, wherein, flood pattern comprises water flooding pump station, heater and water-filled pool (tank), sewage disposal system comprises the pumping plant that catchments, cesspool (tank), pollutant holding vessel and multi-stage sewage treatment device, and the water out up to standard of sewage disposal system is connected with the water-filled pool (tank) of flood pattern with control valve by pipeline.Wherein water collecting pump can be the immersible pump being located at ground vavuum pump or being located in sump.
Treatment step:
First, the contaminated soil seeped water between pipe network in earth's surface and underground ground floor is cleaned.The pipe network that seeped water in flood pattern and earth's surface is communicated with, and earth's surface infiltration pipe network is born and poured into clear water function to contaminated soil.At this moment underground ground floor infiltration pipe network is communicated with sewage disposal system, bears the collecting function of sewage in soil.The sewage collected enters sump and carries out purified treatment by water collecting pump introducing sewage-treatment plant again, water up to standard after purified treatment introduces the water-filled pool (tank) of flood pattern, recycle, the pollutant through sewage-treatment plant purification separation is collected simultaneously.Must monitor the change of water quality of underground water in wash cycles process, until water quality pollutant is up to standard, namely this layer of contaminated soil cleaning treatment completes.
Step 2, underground ground floor infiltration pipe network is connected with flood pattern, pour into clear water to the contaminated soil that underground ground floor infiltration pipe network and subbasement seep water between pipe network, at this moment subbasement infiltration pipe network is connected with sewage disposal system, bears the collecting function of sewage in soil.The sewage collected enters sump and carries out purified treatment by water collecting pump introducing sewage-treatment plant again, water up to standard after purified treatment introduces the water-filled pool (tank) of flood pattern, recycle, the pollutant through sewage-treatment plant purification separation is collected simultaneously.The change of water quality of underground water must be monitored, until water quality pollutant i.e. this layer of contaminated soil cleaning treatment up to standard completes in wash cycles process.
According to the mode of step 2, successively contaminated soil cleaning and the dirty water decontamination handles are carried out to each layer soil from top to bottom, until require that the soil in treating depth is up to standard.
For the order of severity of soil pollution situation, in cleaning process, secondary pollution is caused to Soil Surrounding, at the water proof enclosure wall of the peripheral embedding division board of processed contaminated soil or barrier film composition, division board comprises the one of precast concrete or plastic plate, metallic plate.The method of embedding division board is the several high-pressure water pipeline of inner longitudinal arrangement when Prefabricated Concrete division board, high-pressure water pipe front end bottom division board connects high pressure water nozzle, high-pressure water pipe is connected with high-pressure hydraulic pump, and division board is engaged in insert into stratum under high-pressure water jet by lifting mode.Embedding barrier film needs ditching embedding.The buried depth of division board (film) determines according to the remediation contaminated soil degree of depth.
Need treating depth to be greater than 5 meters for contaminated soil, the orlop infiltration pipe network of tiling collects the situation less than deep layer contaminant water, and infiltration vertical shaft mode can be adopted to collect contaminant water.Vertical shaft adopts quincuncial arrangement, and well depth can reach more than-10 meters.During early-stage preparations, just must determining whether to need to clean deep soil, as needed cleaning, after infiltration piping network laying completes, vertical shaft being set immediately.Vertical shaft vertical depth less than 5 meters, the direction degree of depth all buries permeable sand screen underground, respectively arranges a water collecting pump and extracts the contaminant water of infiltrating, and be connected with ground sewage treating apparatus by water collecting pump, bear the collecting function of less than 5 meters soil sewage in vertical shaft.After contaminated soil more than the darkest pipe network layer in underground has cleaned, orlop underground pipe network is connected with flood pattern, coordinate with infiltration vertical shaft and orlop underground pipe network is cleaned with the contaminated soil of lower part, sewage after cleaning is introduced ground sewage treating apparatus by water collecting pump in vertical shaft and is carried out purified treatment, water up to standard after purified treatment introduces the water-filled pool (tank) of flood pattern, recycle, the pollutant through sewage-treatment plant purification separation is collected simultaneously.Must monitor the change of water quality of underground water in circulation flushing process, until water quality pollutant i.e. deep layer up to standard is dirty, dye soil cleaning treatment completes.
Described soakaway trench adopts the punching bellows of diameter 60-110mm, and punch density is 50-75cm
2/ m, outsourcing filter course prevents flour sand soil from entering pipeline, and filter course comprises sand filtering material, non-woven fabrics, chemical fibre or palm bark, screen pack.Water injection pipe and collector pipe adopt diameter to be greater than the line pipe of soakaway trench, diameter 110-200mm.Described infiltration vertical shaft is the filter well adopting diameter 800-1500mm, and more than 5 meters employings are not seeped water well casing, and 5 meters below adopt permeable well casings, and seep water well casing outsourcing filter course, and filter course comprises ore charge, non-woven fabrics, chemical fibre or palm bark, screen pack.
Described sewage-treatment plant is multi-stage treatment units, detects the result determination treatment step and method analyzed according to contaminated soil in early stage.After contaminant water enters the coagulations (pretreatment) such as collecting-tank (tank) precipitation, flocculation, filtration through water collecting pump, enter many-level molecule sieve ion interchange unit or membrane separation device carry out separating treatment, make it to become recycled water up to standard and enter water-filled pool (tank).Different sewage treatmentmethods is taked according to the pollutant component of contaminated soil, as: for heavy metal pollution, described sewage-treatment plant adopts existing molecular sieve ion-exchange processing device or anti-seepage membrane treating apparatus; Pollute for organic matter (greasy dirt, chemical contamination), sewage-treatment plant fiting chemical can be adopted, pollutant is decomposed into innocuous substance by biological method, or adopt the treating apparatus such as microfiltration membranes, milipore filter to process.Because the difference that the diversity of dirty pollutant in water and improvement require, be generally the multiple processing mode adopting various combination in practical application.
In concrete processing procedure, that match, that absorption affinity is strong molecular sieve and permeable membrane treatment technology to be selected according to the different existing forms of pollutant and particle size; Following table illustrates for selectable treatment technologies of pollutant component such as different heavy metals.
Table one
Below in conjunction with accompanying drawing, above-described embodiment is described further.
Fig. 1 represents the contaminated soil of being isolated by water proof enclosure wall, and in figure, 1 is water proof enclosure wall, and 2 is contaminated soils, and 3 is cleaning soils.In the process of layered circulation cleaning of pouring water, underground pollution water can ooze toward other places, and likely cause secondary pollution, need the same external isolation in region, improvement plot in this case, preventing pollution beyond the region of objective existence is let out.The mode of isolation can adopt the prefabricated plate of concrete, also can adopt other mode.
Fig. 2 a, Fig. 2 b, Fig. 2 c are concrete prefabricated water proof plate top view, front view, side view respectively, and in figure, 4 is high-pressure water pipe, and 5 is I-steel, and 6 is hangers, and 7 is high pressure water jet pipes, and 8 is plates.Water proof plate adopts the method insert into stratum of water-jet under slideway slide plate controls, and admittedly stitched by slip casting between plate and plate and form entirety with cast-in-place cap, the gap between stratum and concrete plate adopts water conservancy diversion desilting technology to carry out filling reinforcing.The long 5-15 rice of plate, thick 0.15-0.2 rice, its length and thickness and reinforcing bar configuration design with prefabricated according to the needs of administered soil.
Fig. 3 is scavenge pipe network arrangements figure, and in figure, 9 is water injecting pumps, and 10 is seepage in underground pipe networks, and 11 is earth's surface infiltration pipe networks, and 12 is tube connector and valve, and 13 is water-filled pool (fillings), and 14 is water injection wells, and 15 is sumps, and 16 is water collecting pumps, and 17 is cesspool (fillings).Adopt ditching pipeline burying machine successively to lay pipe network from bottom to top at 0--5 rice soil, soakaway trench adopt tolerance compared with hot water temperature, the punching bellows of diameter 60-110mm, outsourcing geotextiles or other anti-layers of sand, enter blocking pipe for preventing flour sand soil.Utilize water injection pipe to couple together buried many soakaway trench one end, the other end utilizes collector pipe to couple together, and water injection pipe and collector pipe adopt the diameter 110-200mm bellows tolerating equal temperature with soakaway trench.For ensureing that cleaning evenly, Precision land levelling operation will be carried out in the front earth's surface of water filling, smooth precision ± 5cm.
The infiltration coefficient drawn according to soil sample analysis descends the bore of soakaway trench, spacing and layer distance definitely.Underground pipe network adopts paved in multi-layers, general upper and lower two-layer 0.5-1.5 rice of being separated by, with layer water injection pipe apart from 5-15 rice.Soakaway trench is laid by certain slope, high-endly carries out being connected for water filling with water injection pipe, and low side and collector pipe carry out being connected for catchmenting.Every layer infiltration pipe network be connected with ground water injecting pump through valve, when this layer of underground pipe network bear pour into clear water function time, close other layer seep water pipe network with the valve between water injecting pump, open this layer of pipe network simultaneously and can carry out cleaning of pouring water with the valve between water injecting pump.Each layer soakaway trench collects contaminant water and all enters sump, the in-built water collecting pump of sump, by water collecting pump, the contaminant water collected is oozed out in underground and introduces cesspool (tank).
Fig. 4 is infiltration vertical shaft layout drawing, and in figure, 18 is infiltration vertical shafts, and 19 is pipe of cements, and 20 is filter sand pipe of cements, and 21 is-5 meters of cut-off rules.Infiltration vertical shaft mode can be adopted to clean for darker pollution soil layer (contaminated soil less than-5 meters), vertical shaft can reach more than-10 meters deeply.According to the curve movement of underground water under gravity condition, every 500-1000 square metre beats a bite vertical shaft.The density of vertical shaft is arranged and should be visited sample analysis result in detail by soil and determine, and the soil of good penetrability can arrange less well location, otherwise can be closeer, and vertical shaft adopts plum blossom shape to lay.
The underground pipe network of vertical shaft and tiling can crossed construction simultaneously, and a water collecting pump joined by every mouthful of vertical shaft, oozes out contaminant water for extracting underground.After the soil layer that tiling pipe network controls completes cleaning, imbed the most further pipe network in underground and transfer water filling to, open shaft water-collecting pump and carry out draining.Underground water in more than-15 meters soil can draw up by-20 meters of dark vertical shafts completely, and more than-15 meters soil layers any material being dissolved in water under high temperature clean water can go out with water-band and be separated to clean out.If require that the soil of cleaning is darker, deep shaft can also be added, until underground impermeable stratum.Vertical shaft is general only for extracting underground pollution water, if to pour water cleaning with vertical shaft, and can the distributing position of Reasonable adjustment water injection well and sump and the degree of depth that seeps water.Vertical shaft is arranged and groundwater abstraction will consider that can not stablize present situation to the underground water in Soil Surrounding causes significant impact, in order to avoid above-ground structures is impaired.
Fig. 5 is ground auxiliary facility flow chart, and 9 is water injecting pumps, and 13 is water-filled pool (fillings), and 17 is cesspool (fillings), and 22 is heaters, and 23 is switchgear houses, and 24 is sewage second-level process, and 25 is pollutant holding vessels, and 26 is sewage coagulations.Start ground flood pattern for cleaning contaminated soil, the ground floor pipe network of provided underground starts water suction, by collector pipe, sump and water collecting pump, the water extraction containing pollutant is entered cesspool (tank), coagulation tank is entered after the flocculation of cesspool (tank) precipitation, after separating treatment, enter two stage treatment tank again carry out degree of depth separating treatment, the pollutants such as the heavy metal contained in contaminant water are separated to greatest extent, makes it to become recycled clear water and enter water injection tank.Clear water is through heating or add the auxiliary agent that pollutants such as promoting heavy metal is dissolved in water, and underground of reinjecting, moves in circles, until cleaned.The pollutant separated enters pollutant storage tank, some recoverables, and what have does harmless treatment.
In order to reduce engineering cost, wherein the treating apparatus of contaminant water can manufacture skid mounted equipment, with control device, Water Tank, sewage treatment pot, pollutant holding vessel, water injection tank, heater, water pump etc. are linked up with pipeline, configuration power system, the water filling and the pollutant that form modular are processed into covering device.The pipeline adopted in native system is resistance to low-pressure line, and water injecting pump and suction pump are also low-lift pump.Treat that this project governance completes, sundry item still can use.After contaminated soil has cleaned, underground pipe network, vertical shaft, water proof enclosure wall etc. are all dismountable, and bottommost layer pipe network and a small amount of vertical shaft also can give over to the use of detection.
Collecting the contaminant water of refuse landfill can first at the pre-buried soakaway trench of landfill yard shallow-layer before building field, and for collecting wastewater reuse approach, later landfill yard rubbish often increases 1-1.5 rice can re-lay one deck soakaway trench, and introduces in sewage collecting pool and focus on.The method of directional traversing can be adopted to be imbedded by soakaway trench under soot among thin solum built soot, and the sewage drainage of oozing out is focused on.
Claims (6)
1. utilize layered circulation to clean a method of administering soil pollution, it is characterized in that comprising
Early-stage preparations:
Flood pattern and sewage disposal system are set on the ground, wherein, flood pattern comprises water-filled pool and water flooding pump station, sewage disposal system comprises water collecting pump, cesspool, sewage-treatment plant and pollutant holding vessel, and the water out up to standard of sewage disposal system is connected with the water-filled pool of flood pattern with valve by pipeline;
The infiltration pipe network that multilayer is made up of to the soakaway trench be connected in length and breadth level is set in earth's surface and underground, between the infiltration pipe network of earth's surface to the bottom, depth direction is provided with sump, each layer infiltration pipe network catchment end respectively by respective tube connector and valve and sump through, the water injection end of each layer infiltration pipe network is respectively by respective tube connector and valve access flood pattern on the ground, each layer pipe network interlamellar spacing 0.5-1.5 rice, sump is connected with sewage disposal system water collecting pump;
The tube wall of described soakaway trench is provided with hole;
Treatment step:
First, the contaminated soil that cleaning improvement surface layer and underground ground floor seep water between pipe network, the pipe network that seeped water on earth's surface is communicated with flood pattern, evenly clear water is poured into contaminated soil, underground ground floor infiltration pipe network is communicated with sump, contaminant water comes together in sump through underground ground floor infiltration pipe network, cleans the contaminated soil between earth's surface to underground ground floor infiltration pipe network; The contaminant water of sump is incorporated into sewage-treatment plant by water collecting pump again and carries out purified treatment, water up to standard after process introduces the water-filled pool of flood pattern, recycle, pollutant through sewage-treatment plant purification separation is collected simultaneously, the change of water quality of underground water must be monitored, until water quality pollutant is up to standard in wash cycles process;
Step 2, the contaminated soil that cleaning improvement underground ground floor infiltration pipe network and subbasement seep water between pipe network, underground ground floor infiltration pipe network is communicated with flood pattern, evenly clear water is poured in contaminated soil, the pipe network that seeped water by subbasement is communicated with sump, contaminant water comes together in sump through second layer infiltration pipe network, cleans the contaminated soil that underground ground floor infiltration pipe network and subbasement seep water between pipe network; The contaminant water of sump is incorporated into sewage-treatment plant and carries out purified treatment, the water-filled pool that water up to standard after process introduces flood pattern recycles, pollutant through sewage-treatment plant purification separation is collected simultaneously, the change of water quality of underground water must be monitored, until water quality pollutant is up to standard in wash cycles process;
According to the mode of step 2, successively contaminated soil cleaning and the dirty water decontamination handles are carried out to following soil horizon from top to bottom, until require that the soil in treating depth is up to standard.
2. the layered circulation that utilizes according to claim 1 cleans the method for administering soil pollution, it is characterized in that: at the peripheral embedding division board of processed contaminated soil or barrier film, division board comprises precast concrete or plastic plate, metallic plate.
3. the layered circulation that utilizes according to claim 2 cleans the method for administering soil pollution, it is characterized in that: the method for embedding division board is longitudinal arrangement one or several high-pressure water pipe in division board, high-pressure water pipeline front end lateral connection high pressure water nozzle bottom division board, high-pressure water pipe is connected with high-pressure hydraulic pump, and division board is by lifting mode insert into stratum under high-pressure water jet.
4. the layered circulation that utilizes according to claim 1 or 2,3 cleans the method for administering soil pollution, it is characterized in that: for requiring that pollution administration depth of soil is greater than the situation of 5 meters, during early-stage preparations, infiltration vertical shaft is evenly laid along depth direction in the gap of underground pipe network, infiltration vertical shaft is greater than the under ground portion of 5 meters for infiltration well casing in the degree of depth, infiltration vertical shaft is connected with sewage disposal system; After more than 5 meters soil layers have been administered in cleaning, in soil, pour into clear water through basecoat infiltration pipe network, contaminant water infiltrates vertical shaft, cleans the contaminated soil of part below underground bottom infiltration pipe network; Contaminant water is incorporated into sewage-treatment plant through infiltration vertical shaft and carries out purified treatment, water up to standard after purified treatment introduces the water-filled pool of flood pattern, recycle, pollutant through sewage-treatment plant purification separation is collected simultaneously, the change of water quality of underground water must be monitored, until water quality pollutant is up to standard in wash cycles process.
5. the layered circulation that utilizes according to claim 1 or 2,3 cleans the method for administering soil pollution, it is characterized in that: described soakaway trench adopts the punching bellows of diameter 60-110mm, and perforate density is 50-75cm
2/ m, outsourcing filter course; Filter course comprises ore charge, non-woven fabrics, chemical fibre or palm bark, screen pack; Soakaway trench adopts parallel arrangement mode, and spacing is at 5-15 rice; Described flood pattern also comprises water filling heater; Described sewage-treatment plant is multi-stage sewage treatment device, comprises molecular sieve ion-exchange processing device or anti-seepage membrane treating apparatus fiting chemical, biological treatment agent and device.
6. the layered circulation that utilizes according to claim 4 cleans the method for administering soil pollution, it is characterized in that: described soakaway trench adopts the punching bellows of diameter 60-110mm, and perforate density is 50-75cm
2/ m, outsourcing filter course; Filter course comprises ore charge, non-woven fabrics, chemical fibre or palm bark, screen pack, and soakaway trench adopts arranged in parallel, and spacing is at 5-15 rice; Described infiltration vertical shaft is the filter well adopting diameter 800-1500mm, more than 5 meters employings are not seeped water well casing, less than 5 meters adopt permeable well casing, infiltration well casing outsourcing filter course, and filter course comprises ore charge, non-woven fabrics, chemical fibre or palm bark, screen pack; Described flood pattern also comprises water filling heater; Described sewage-treatment plant is multi-stage sewage treatment device, comprises molecular sieve ion-exchange processing device or anti-seepage membrane treating apparatus fiting chemical, biological treatment agent and device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410242179.1A CN104043644B (en) | 2013-07-01 | 2014-06-04 | A kind of layered circulation that utilizes cleans the method for administering soil pollution |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102679506 | 2013-07-01 | ||
| CN 201310267950 CN103302088A (en) | 2013-07-01 | 2013-07-01 | Method for treating soil pollution in a hierarchically cyclic cleaning manner |
| CN201310267950.6 | 2013-07-01 | ||
| CN201410242179.1A CN104043644B (en) | 2013-07-01 | 2014-06-04 | A kind of layered circulation that utilizes cleans the method for administering soil pollution |
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| CN104043644A CN104043644A (en) | 2014-09-17 |
| CN104043644B true CN104043644B (en) | 2015-09-16 |
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| CN 201310267950 Pending CN103302088A (en) | 2013-07-01 | 2013-07-01 | Method for treating soil pollution in a hierarchically cyclic cleaning manner |
| CN201410242179.1A Active CN104043644B (en) | 2013-07-01 | 2014-06-04 | A kind of layered circulation that utilizes cleans the method for administering soil pollution |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103736722A (en) * | 2014-01-13 | 2014-04-23 | 韩清洁 | In-situ polluted soil leaching system and method |
| JP5647371B1 (en) * | 2014-06-03 | 2014-12-24 | Ｄｏｗａエコシステム株式会社 | Detoxification method for contaminated soil |
| CN104399740B (en) * | 2014-11-18 | 2017-03-29 | 青岛新天地环境保护有限责任公司 | A kind of horizontal sealing Rotating fields and its method for contaminated soil remediation |
| CN106211839B (en) * | 2016-07-15 | 2018-11-02 | 佟保根 | A kind of water discharge method of alkaline land soil |
| CN106493165A (en) * | 2016-08-24 | 2017-03-15 | 天津市北方创业园林股份有限公司 | A kind of geavy salt alkali soil improvement structure for sticking weight suitable for quality |
| CN106193216B (en) * | 2016-08-30 | 2019-05-21 | 武汉金牛经济发展有限公司 | A kind of caisson ponding discharger |
| CN106269833B (en) * | 2016-09-18 | 2024-01-05 | 浙江华展研究设计院股份有限公司 | Dialysis device for treating soil pollution |
| CN107052040A (en) * | 2017-04-20 | 2017-08-18 | 张红新 | A kind of contaminated soil remediation processing system |
| CN107159698B (en) * | 2017-06-09 | 2020-07-28 | 航天凯天环保科技股份有限公司 | Method for in-situ remediation of heavy metal contaminated soil by three-dimensional well leaching combined stabilization |
| CN107986555A (en) * | 2017-11-14 | 2018-05-04 | 中电建水环境治理技术有限公司 | Ground water circulation restorative procedure and system based on function pipe network |
| CN108393342A (en) * | 2018-01-30 | 2018-08-14 | 上海岩土工程勘察设计研究院有限公司 | Sub-region and hierarchical in-situ remediation method suitable for the stirring of Polluted Soil shallow-layer |
| CN115228924A (en) * | 2022-07-22 | 2022-10-25 | 生态环境部南京环境科学研究所 | Rice field conditioning method for reducing cadmium enrichment of rice in rice field |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1382535A (en) * | 2001-04-20 | 2002-12-04 | 中国科学院沈阳应用生态研究所 | Method and equipment for washing soil polluted by water-soluble or exchangeable heavy metals |
| JP2007021280A (en) * | 2005-07-12 | 2007-02-01 | Mirai Kensetsu Kogyo Kk | Cleaning apparatus and cleaning method for soil |
| CN101879519A (en) * | 2010-01-18 | 2010-11-10 | 王鹤立 | Ultrasonic in situ extraction process for remediating heavy metal-polluted soil |
-
2013
- 2013-07-01 CN CN 201310267950 patent/CN103302088A/en active Pending
-
2014
- 2014-06-04 CN CN201410242179.1A patent/CN104043644B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1382535A (en) * | 2001-04-20 | 2002-12-04 | 中国科学院沈阳应用生态研究所 | Method and equipment for washing soil polluted by water-soluble or exchangeable heavy metals |
| JP2007021280A (en) * | 2005-07-12 | 2007-02-01 | Mirai Kensetsu Kogyo Kk | Cleaning apparatus and cleaning method for soil |
| CN101879519A (en) * | 2010-01-18 | 2010-11-10 | 王鹤立 | Ultrasonic in situ extraction process for remediating heavy metal-polluted soil |
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| CN104043644A (en) | 2014-09-17 |
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