CN106915879A - Silt harmless processing method - Google Patents
Silt harmless processing method Download PDFInfo
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- CN106915879A CN106915879A CN201710220986.7A CN201710220986A CN106915879A CN 106915879 A CN106915879 A CN 106915879A CN 201710220986 A CN201710220986 A CN 201710220986A CN 106915879 A CN106915879 A CN 106915879A
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- mud
- processing method
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/008—Sludge treatment by fixation or solidification
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/06—Treatment of sludge; Devices therefor by oxidation
- C02F11/08—Wet air oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/18—Treatment of sludge; Devices therefor by thermal conditioning
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
Abstract
The invention provides a kind of silt harmless processing method.The processing method includes：Field sampling detects the initial value of project to be detected, discharges and transport pending place sludge solidification treatment；Mud is positioned in pond and water is added and oxidant carries out degradation treatment to wherein harmful substance；Stood after stirring mud aqueous mixtures repeatedly；Discharge pond ponding, mud to be dried is obtained by the mud discharge pond that content of beary metal reaches default content of beary metal；The moisture for reducing mud to be dried obtains the mud planting soil that moisture is standard moisture.Sludge pollution thing is obtained innoxious mud by the processing method provided in the present invention after treatment can directly apply to landfill soil or greening soil.Processing method treatment simple to operate is convenient, simplifies the process of sludge pollution thing treatment, improves treatment effeciency, reduces processing cost.
Description
Technical field
The present invention relates to technical field of civil engineering, disposed in particular to a kind of silt harmless and green planting
Method.
Background technology
China is freshwater resources total amount position big country at the forefront in the world, at the same be also one per capita water resource it is extremely deficient
Weary " poor country ", with deepening continuously for Chinese Industrialization and Development of China's Urbanization, environmental pollution is on the rise, especially in city
The pollution of river be particularly acute.The pollution of river is broadly divided into two kinds of water pollution and sludge pollution.
Sludge pollution is influenceed that silt can be gradually formed at the bottom mainly due to environment waters such as river course, lakes by soil erosion
Mud, and as the deterioration pollutant of water quality is largely transferred in bed mud.It is to take certainly to administer the main mode of mud at present
Right desiccation and mechanical dehydration, accelerate this natural process, then transport to sludge treatment factory to mud using artificial-strengthening if necessary
The treatment of concentrated contaminated water material, but, addition particular matter is needed during treatment and needs mechanical apparatus etc. to carry out special chemistry
Processing mode, therefore existing disposal methods are complicated, high cost expends long.
The content of the invention
In consideration of it, the present invention proposes a kind of silt harmless processing method, it is intended to solve existing processing method it is complicated into
This problem high.
On one side, the present invention proposes a kind of silt harmless processing method, and the method comprises the following steps：Pretreatment
Step, the initial value of project to be detected in field sampling mud will obtain curing sludge after sludge solidification treatment, will be described
Curing sludge is discharged and transports the curing sludge to pending place；Harmful substance degradation step, the curing sludge is put
It is placed in pond and obtains mud aqueous mixtures to water filling in pond, oxidant is injected in the pond so as to the mud
Harmful substance in aqueous mixtures is degraded to default harmful substance contents；Heavy metal separating step, stirs the mud water repeatedly
Mixture stops stirring and stands to the second Preset Time to the first Preset Time；Mud isolation step, by pond ponding row
Go out, the mud discharge pond that content of beary metal is not up to default content of beary metal is obtained into mud to be dried；Mud baking step,
The moisture that the mud to be dried carries out the treatment reduction mud to be dried is obtained into moisture for standard moisture contains
The mud planting soil of amount.
Further, above-mentioned silt harmless processing method, comprises the following steps before the heavy metal separating step：Acid
Basicity detecting step, detects the acid-base value of the mud aqueous mixtures during stirring；Acid-base value mediation step, if the mud water
The acid-base value of mixture is not up to default acid-base value standard, by the acid-base value of the mediation mud aqueous mixtures to the mud water
The acid-base value of mixture reaches default acid-base value standard.
Further, above-mentioned silt harmless processing method, also comprises the following steps after the mud isolation step：With much money
Category solidification isolation step, the mud that content of beary metal in the mud aqueous mixtures is more than or equal to default content of beary metal is entered
Row treatment, takes out mud and heavy metal pond and places predeterminable area isolation to prevent heavy metal from exosmosing.
Further, above-mentioned silt harmless processing method, also comprises the following steps after the mud baking step：Mud
Degradation step, planting plants on the mud planting soil are further dropped to the harmful substance in the mud planting soil
Solution.
Further, above-mentioned silt harmless processing method, the pre-treatment step further includes following sub-step:Become silted up
Mud detects sub-step, and field sampling detects the initial value of the project to be detected；Judge sub-step, it is true according to the initial value
Recognize the moisture solution thickness of the mud；Mud moisture solution sub-step, by the discharge of mud upper strata ponding, by the condensation
Agent is sprayed in the mud and mud moisture reduction is obtained into the solidification that moisture is pre-set moisture content becomes silted up
Mud.
Further, above-mentioned silt harmless processing method, the ponding of the mud isolation step discharge is used for harmful
The pond is injected in mass degradation step.
Further, above-mentioned silt harmless processing method, the default acid-base value standard is according to the mud planting soil
Territory of use determines.
Further, above-mentioned silt harmless processing method, the field sampling is sampled using core pulling.
Further, above-mentioned silt harmless processing method, by the mud in the mud moisture solution step
It is interior to excavate the gutter and sump draining being connected.
Further, above-mentioned silt harmless processing method, the oxidant includes potassium permanganate, hydrogen peroxide, Fenton
Reagent, persulfate.
The invention provides processing method sludge pollution thing can be obtained by after heavy metal and detoxication
Innoxious mud, the mud after the treatment can directly apply to landfill soil or greening soil.The processing method is without special
Mechanical mechanism and special chemicals, save substantial amounts of cost and practical.In addition, processing method operation letter
Folk prescription just, significantly simplify sludge pollution thing processing procedure, improve treatment effeciency.Meanwhile, the processing method is to Treatment stations
Require it is low, therefore, the processing method also further saves haulage time and cost, further increases treatment effeciency.
Brief description of the drawings
By reading the detailed description of hereafter preferred embodiment, various other advantages and benefit is common for this area
Technical staff will be clear understanding.Accompanying drawing is only used for showing the purpose of preferred embodiment, and is not considered as to the present invention
Limitation.And in whole accompanying drawing, identical part is denoted by the same reference numerals.In the accompanying drawings：
Fig. 1 is the flow chart of silt harmless processing method provided in an embodiment of the present invention；
Fig. 2 is the another flow chart of silt harmless processing method provided in an embodiment of the present invention；
Fig. 3 is the another flow chart of silt harmless processing method provided in an embodiment of the present invention；
Fig. 4 is the another flow chart of silt harmless processing method provided in an embodiment of the present invention；
Fig. 5 is the schematic flow sheet of pre-treatment step in silt harmless processing method provided in an embodiment of the present invention；
Fig. 6 be silt harmless processing method provided in an embodiment of the present invention in, the structural representation of field sampling；
Fig. 7 be silt harmless processing method provided in an embodiment of the present invention in, the knot of mud internal drainage ditch and sump
Structure schematic diagram；
Fig. 8 is in silt harmless processing method provided in an embodiment of the present invention, mud harmful substance drop formal similarity shows
It is intended to；
Fig. 9 be silt harmless processing method provided in an embodiment of the present invention in, mud acid-base value reconcile structural representation
Figure；
During Figure 10 is silt harmless processing method provided in an embodiment of the present invention, heavy metal separate it is not thick after it is dirty in pond
Contaminate the structural representation of thing.
Specific embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although showing the disclosure in accompanying drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
Limited.Conversely, there is provided these embodiments are able to be best understood from the disclosure, and can be by the scope of the present disclosure
Complete conveys to those skilled in the art.It should be noted that in the case where not conflicting, embodiment in the present invention and
Feature in embodiment can be mutually combined.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Referring to Fig. 1 and Fig. 8 to Figure 10, the processing method comprises the following steps：
Pre-treatment step S1, the initial value of project to be detected in field sampling mud 1 will be obtained after sludge solidification treatment
To curing sludge, the curing sludge is discharged and the curing sludge to pending place is transported.
Specifically, sampling in the mud 1 containing plurality of heavy metal and harmful substance live first, treats in detection sampling exemplar
The initial value of detection project simultaneously records project to be detected and corresponding initial value, then, mud 1 is carried out into curing process and obtains water
Point content is the curing sludge 5 of pre-set moisture content, finally curing sludge 5 is discharged or dug out is transported to pending place.
Harmful substance degradation step S2, curing sludge 5 is positioned in pond 6 and mud is obtained to water 9 is injected in pond 6
After aqueous mixtures 7, oxidant 8 is injected in pond 6 and is harmful to be degraded to the harmful substance in mud aqueous mixtures 7 to default
Content of material.
Specifically, as shown in figure 8, can be transported curing sludge 5 to disposal field by transport vehicle and be positioned over pond 6
Interior, to water filling in pond 6, marginal not enters the stirring of the side of water 9 so that curing sludge 5 is turned to the mud of liquid by solid or semi-solid change
Aqueous mixtures 7, certainly, can place the water of default content before curing sludge 5 is poured into pond, now only solidification need to be become silted up
The injection of mud 5 is stirred in pond 6.So as to the harmful substance degraded in mud aqueous mixtures, to the silt in pond 6 while stirring
Injection oxidant in mud mixture so that harmful substance contents are reduced to default harmful substance contents in mud aqueous mixtures 7.
To further ensure that the silt harmless after treatment, harmful substance can also be carried out to mud aqueous mixtures 7 again after treatment and contained
Amount checking.Wherein, in pond 6 inject water content can according to actual conditions determine for example the content of curing sludge 5 and
Moisture in curing sludge 5, any restriction is not done to it in the present embodiment.In addition, oxidant can be potassium permanganate, mistake
Hydrogen oxide, Fenton reagent, persulfate.Certainly, oxidant can also be the material of other degraded harmful substances, in the present embodiment
Any restriction is not done to it.Wherein, in oxidant each several part potassium permanganate, hydrogen peroxide, Fenton reagent, persulfate injection
Order and consumption can determine according to the testing result of the pollutant of mud 1 in mud detecting step, it is not done in the present embodiment
Any restriction.In addition, default harmful substance contents can determine according to relevant regulations standard and actual conditions, it is right in the present embodiment
It does not do any restriction.It should be noted that to prevent pollutant in curing sludge 5 from leaking, the bottom wall and side wall in pond 5 need
With extraneous zone isolation without leaking.
Heavy metal separating step S3, after the Preset Time of mud aqueous mixtures 7 to the first is stirred repeatedly, stops stirring and stands extremely
After second Preset Time.
Specifically, as shown in Figure 10, in order that the ion of heavy metal 10 is separated fully with mud, first to mud aqueous mixtures
7 stir to the first Preset Time repeatedly.Then stop stirring, in order that heavy metal 10 is precipitated, mud aqueous mixtures 7 are stood the
Two Preset Times, now, heavy metal 10 is precipitated due to self gravitation effect, and concentration is precipitated to the bottom shape of pond 6 by heavy metal 10
Into heavy metal layer, meanwhile, water and mud will also be separated in mud aqueous mixtures 7, according to the effect of self gravitation, heavy metal 10,
Mud 11 and water 9 are isolated from the bottom up (for the position of Figure 10) in pond and are stacked in water respectively after heavy metal treatment
In pond, the content of heavy metal 10 is drastically reduced in mud and surface water at the middle and upper levels, and the intractability to mud is also greatly reduced.Its
In, the first Preset Time and the second Preset Time can determine according to the size in the amount of mud aqueous mixtures and pond 6, this implementation
Any restriction is not done to it in example.
Mud isolation step S4, by the discharge of the ponding of pond 6, content of beary metal is not up to the mud of default content of beary metal
Discharge pond obtains mud to be dried.
Specifically, the ponding that will be separated in mud aqueous mixtures 7, the ponding is concentrated mainly on water according to Action of Gravity Field
The centre and top in pond 6, pond 6 is discharged by the ponding.To save water resource, the ponding of discharge can be in next sludge treatment
Injected in pond to be reused as water 9 in harmful substance degradation step.Heavy metal separating step S5 heavy metals
10th, mud 11 and water 9 carry out precipitate and separate after heavy metal treatment, but, precipitation and separation thoroughly may not become silted up after heavy metal treatment
The bottom of mud 11 may also be contaminated with heavy metal 10.Therefore, to ensure the silt harmless after treatment, pond can first be detected
The content of heavy metal 10 of each layer mud, determines distribution situation of the heavy metal 10 in mud in 6, and the content of heavy metal 10 is not up to
Mud 11 peels off discharge or digs out pond 6 after the heavy metal treatment of default content of beary metal, to obtain mud to be dried.
Mud baking step S5, obtains the moisture that mud to be dried carries out treatment reduction mud to be dried moisture and contains
Measure the mud planting soil for standard moisture.
Specifically, mud to be dried can be positioned over into place that is sunny and having wind is carried out certainly to mud to be dried
The method so dried.Preferably, mud planting soil is obtained to further speed up, can constantly dig and turn over mud to be dried.Certainly
Can also be processed for quickly obtaining treating mud planting soil by artificial furnace drying method.The moisture of mud planting soil contains
It is standard moisture to measure, wherein, standard moisture can determine according to mud planting soil plant to be planted, usually,
Standard moisture is optimal plantation moisture for 30% or so, naturally it is also possible to be other values or scope, in the present embodiment
Any restriction is not done to it.
As can be seen that the processing method provided in the present embodiment can be by sludge pollution thing by heavy metal and harmful substance
Innoxious mud is obtained after treatment, the mud after the treatment can directly apply to landfill soil or greening soil.The treatment side
Method saves substantial amounts of cost and practical without special mechanical mechanism and special chemicals.In addition, the treatment
Method is simple to operate, significantly simplify sludge pollution thing processing procedure, improves treatment effeciency.Meanwhile, the treatment side
Method is low to disposal field requirement, therefore, the processing method also further saves haulage time and cost, further increases place
Reason efficiency.
Referring to Fig. 2 and Fig. 8 to Figure 10, the method comprises the following steps：
Pre-treatment step S1, the initial value of project to be detected in field sampling mud 1 will be obtained after sludge solidification treatment
To curing sludge, the curing sludge is discharged and the curing sludge to pending place is transported.
Harmful substance degradation step S2, curing sludge 5 is positioned in pond 6 and mud water is obtained to water filling in pond 6
After mixture 7, oxidant 8 is injected in pond 6 to degrade the harmful substance in mud aqueous mixtures 7 to default nuisance
Matter content.
Acid-base value detecting step S6, detects the acid-base value of mud aqueous mixtures 7 during stirring.Specifically, harmful substance degraded
The acid-base value (pH value) of detection mud aqueous mixtures 7 while step S4 is stirred.It is of course also possible in harmful substance degradation step
Detected afterwards, the present embodiment does not do any restriction to it.
Acid-base value mediation step S7, if the acid-base value of mud aqueous mixtures 7 is not up to default acid-base value standard, will reconcile
The acid-base value of mud aqueous mixtures 7 is to default acid-base value standard.
Specifically, as shown in figure 9, the acid-base value of detection is not up to default acid-base value standard, can add by pond 6
Enter the acid-base value of the mediation mud of soda acid blender 14 aqueous mixtures 7, until the acid-base value of mud aqueous mixtures 7 reaches default soda acid
Scale is accurate.Wherein soda acid blender 14 can be acetic acid or hydrochloric acid, naturally it is also possible to be other materials, in the present embodiment to it not
Do any restriction.Certainly, the method for the acid-base value of mediation mud aqueous mixtures 7 can also be processed by other means, this implementation
Any restriction is not done to it in example.Wherein, presetting acid-base value standard can determine according to mud planting soil territory of use, this implementation
Any restriction is not done to it in example.It will be apparent to a skilled person that mud planting soil needed for general northern area
Acid-base value is larger, and the acid-base value of mud planting soil is less than normal needed for southern area.
Heavy metal separating step S3, after the Preset Time of mud aqueous mixtures 7 to the first is stirred repeatedly, stops stirring and stands extremely
After second Preset Time.
Mud isolation step S4, by the discharge of the ponding of pond 6, the content of heavy metal 10 is reached the mud of default content of beary metal
Discharge pond obtains mud to be dried.
Mud baking step S5, obtains the moisture that mud to be dried carries out treatment reduction mud to be dried moisture and contains
Measure the mud planting soil for standard moisture.
The method that the present embodiment is provided can be unsatisfactory for mud planting soil using area in the acid-base value of sludge pollution thing will
When asking, further with the acid-base value of simplified method mediation sludge pollution thing, the mud planting soil for obtaining after treatment can be straight
Acid-base value needed for filling sufficient planting, to be further ensured that the acid-base value suitable planting plant of the mud planting soil for obtaining.
Referring to Fig. 3, Fig. 3 is the another flow chart of silt harmless processing method provided in an embodiment of the present invention.As schemed
Show, the method comprises the following steps：
Pre-treatment step S1, the initial value of project to be detected in field sampling mud 1 will be obtained after sludge solidification treatment
To curing sludge, the curing sludge is discharged and the curing sludge to pending place is transported.
Harmful substance degradation step S2, curing sludge 5 is positioned in pond 6 and mud water is obtained to water filling in pond 6
After mixture 7, oxidant 8 is injected in pond 6 to degrade the harmful substance in mud aqueous mixtures 7 to default nuisance
Matter content.
Acid-base value detecting step S6, detects the acid-base value of mud aqueous mixtures 7 during stirring.
Acid-base value mediation step S7, if the acid-base value of mud aqueous mixtures 7 is not up to default acid-base value standard, will reconcile
The acid-base value of mud aqueous mixtures 7 is to default acid-base value standard.
Heavy metal separating step S3, after the Preset Time of mud aqueous mixtures 7 to the first is stirred repeatedly, stops stirring and stands extremely
After second Preset Time.
Mud isolation step S4, by the discharge of the ponding of pond 6, content of beary metal is reached the mud row of default content of beary metal
Discharge bay obtains mud to be dried.
Heavy metals immobilization isolation step S8, default heavy metal is more than or equal to by content of beary metal in mud aqueous mixtures 7
The mud of content is processed, and the mud after pre-treatment and heavy metal 10 is taken out into pond and places predeterminable area isolation to prevent
Heavy metal exosmoses.
Specifically, it is more than or waits by content of beary metal in the mud aqueous mixtures 7 after heavy metal separating step S5 treatment
In the mud of default content of beary metal be only mud base section in pond 6, can by dry, drying naturally, naturally
The pre-treatments such as air-dried or mechanical drying.Preferably, content of beary metal can be more than or equal to the mud of default content of beary metal
Being positioned over place that is sunny and having wind carries out the method that nature is dried to it, is to reduce its moisture as early as possible, can be with
Constantly dig and turn over the mud.Can certainly be processed for quickly carrying out pre-treatment by artificial furnace drying method.And
Mud after pre-treatment and heavy metal 10 are dug out into pond 6 and are positioned over predeterminable area isolation, can by storage to locality or
In container, can prevent wherein heavy metal from leaking pollution.Preferably, predeterminable area is isolated into closed area.
Mud baking step S5, obtains the moisture that mud to be dried carries out treatment reduction mud to be dried moisture and contains
Measure the mud planting soil for standard moisture.
The method provided in the present embodiment can avoid heavy metal from causing secondary pollution to exosmosis, while high content is with much money
The raw materials for production of chemical industry are can act also as after category pollutant formation scale, and then secondary utilization is carried out to it.
Referring to Fig. 4, Fig. 4 is the another flow chart of silt harmless processing method provided in an embodiment of the present invention.As schemed
Show, the method comprises the following steps：
Pre-treatment step S1, the initial value of project to be detected in field sampling mud 1 will be obtained after sludge solidification treatment
To curing sludge, the curing sludge is discharged and the curing sludge to pending place is transported.
Harmful substance degradation step S2, curing sludge 5 is positioned in pond 6 and mud water is obtained to water filling in pond 6
After mixture 7, oxidant 8 is injected in pond 6 to degrade the harmful substance in mud aqueous mixtures 7 to default nuisance
Matter content.
Acid-base value detecting step S6, detects the acid-base value of mud aqueous mixtures 7 during stirring.
Acid-base value mediation step S7, if the acid-base value of mud aqueous mixtures 7 is not up to default acid-base value standard, will reconcile
The acid-base value of mud aqueous mixtures 7 is to default acid-base value standard.
Heavy metal separating step S3, after the Preset Time of mud aqueous mixtures 7 to the first is stirred repeatedly, stops stirring and stands extremely
After second Preset Time.
Mud isolation step S4, by the discharge of the ponding of pond 6, content of beary metal is reached the mud row of default content of beary metal
Discharge bay obtains mud to be dried.
Heavy metals immobilization isolation step S8, default content of beary metal is not up to by content of beary metal in mud aqueous mixtures 7
Mud processed, by the mud after pre-treatment and heavy metal 10 take out pond place predeterminable area isolation so as to prevent a huge sum of money
Category extravasation.
Mud baking step S5, obtains the moisture that mud to be dried carries out treatment reduction mud to be dried moisture and contains
Measure the mud planting soil for standard moisture.
Mud degradation step S11, planting plants on mud planting soil are entered to advance to the harmful substance in mud planting soil
One step is degraded.
Specifically, mud planting soil can be positioned over flat site, and can be with planting plants in mud planting soil.To enter
One step fast degradation harmful substance, it is preferred that the plant for treating the plantation of mud planting soil is green plants such as number etc..
While the method planting plants provided in the present embodiment secondary degraded can also be carried out to noxious material in mud,
Provide not only the soil of planting plants, and harmless treatment further is carried out to mud.
Referring to Fig. 5 to Fig. 7, the pre-treatment step further includes following sub-step：
Mud detects sub-step S11, and field sampling detects the initial value of project to be detected.
Specifically, as shown in figure 5, sampling in mud 1 first at the scene, then detects pollutant in the mud 1 of sampling
The initial value of interior project to be detected.To be further accurately determined the initial value of project to be detected in mud 1, it is preferable that scene
The method sampled using core pulling is sampled by sampling part 2, i.e., mud 1 at the scene randomly selects position, can erect along the horizontal plane
It is straight to extract mud exemplar (for the position shown in Fig. 6) downwards, to be detected to each layer mud 1.It is further excellent
Selection of land, the method that field sampling is detected using multiple core pulling sampling.Wherein, project to be detected include mud 1 in heavy metal, have
Evil material and acid-base value, what the initial value of project to be detected referred to can be the heavy metal and harmful substance and mud in mud 1
Percentage and pH value.
Judge sub-step S12, the moisture solution thickness of mud 1 is confirmed according to initial value.Specifically, sampled according to core pulling
Mud exemplar checks in mud exemplar moisture silt depth higher and then determines that mud 1 needs to carry out the thickness of moisture solution
Degree.In addition, according to mud exemplar detect initial value can also determine the i.e. pending project of the domestic demand project to be processed of mud 1 with
And consumption of material etc. in mud is added in processing procedure.
Mud moisture solution sub-step S13, coagulating agent by the upper strata ponding discharge of mud 1, be sprayed in mud 1 and will become silted up
Moisture reduction obtains the curing sludge 5 that moisture is pre-set moisture content in mud 1.
Specifically, as shown in fig. 7, gutter 3 and sump 4 can be excavated in mud 1, moisture can lead in mud 1
Cross gutter 3 to be concentrated to sump 4 and then discharge, gutter 3 can be set up in parallel for multiple, also, multiple gutters can be with
It is connected with sump 4.Then can spray coagulating agent in every layer of mud in the mud 1 between moisture solution thickness makes
Its moisture reduction after mud 1 mixes with coagulating agent is obtained, until the moisture of mud 1 is down to pre-set moisture content being consolidated
Change mud 5.Wherein, pre-set moisture content can determine according to actual conditions, mainly ensure during actual shipment curing sludge 5 regardless of
Dissipate, any restriction is not done to it in concrete content value the present embodiment.The content and thickness for spraying coagulating agent can be according to coagulating agents
Species and moisture solution thickness determine, do not do any restriction in the present embodiment to it.To reduce processing cost, it is preferable that solidifying
Knot agent is quick lime.
As can be seen that carrying out curing process to mud using coagulating agent in the present embodiment, it is therefore prevented that mud is in transportation
During it is loose and be scattered, improve the convenience of transport.
In sum, the present embodiment provide processing method can by sludge pollution thing by heavy metal and harmful substance at
Innoxious mud is obtained after reason, the mud after the treatment can directly apply to landfill soil or greening soil.The processing method
Without special mechanical mechanism and special chemicals, substantial amounts of cost and practical is saved.In addition, the treatment side
Method is simple to operate, significantly simplify sludge pollution thing processing procedure, improves treatment effeciency.Meanwhile, the processing method
It is low to disposal field requirement, therefore, the processing method also further saves haulage time and cost, further increases treatment
Efficiency.
Obviously, those skilled in the art can carry out various changes and modification without deviating from essence of the invention to the present invention
God and scope.So, if these modifications of the invention and modification belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising these changes and modification.
Claims (10)
1. a kind of silt harmless processing method, it is characterised in that comprise the following steps：
Pre-treatment step, the initial value of project to be detected in field sampling detection mud will be obtained after sludge solidification treatment
Curing sludge, the curing sludge is discharged and the curing sludge to pending place is transported；
Harmful substance degradation step, the curing sludge is positioned in pond and the mixing of mud water is obtained to water filling in pond
Thing, oxidant is injected in the pond to degrade the harmful substance in the mud aqueous mixtures to default harmful substance
Content；
Heavy metal separating step, stirs the mud aqueous mixtures to the first Preset Time repeatedly, stops stirring and stands to second
Preset Time；
Mud isolation step, by pond ponding discharge, content of beary metal is not up to the mud row of default content of beary metal
Discharge bay obtains mud to be dried；
Mud baking step, moisture is obtained by the moisture that the mud to be dried carries out the treatment reduction mud to be dried
Content is the mud planting soil of standard moisture.
2. silt harmless processing method according to claim 1, it is characterised in that before the heavy metal separating step
Comprise the following steps：
Acid-base value detecting step, detects the acid-base value of the mud aqueous mixtures during stirring；
Acid-base value mediation step, if the acid-base value of the mud aqueous mixtures is not up to default acid-base value standard, by reconciling
Acid-base value to the acid-base value of the mud aqueous mixtures for stating mud aqueous mixtures reaches default acid-base value standard.
3. the silt harmless processing method according to any one of claim 1 or 2, it is characterised in that the mud isolation
Also comprise the following steps after step：
Heavy metals immobilization isolation step, default content of beary metal is more than or equal to by content of beary metal in the mud aqueous mixtures
Mud carry out pre-treatment, the mud after pre-treatment and heavy metal are taken out into pond and place predeterminable area isolation to prevent a huge sum of money
Category extravasation.
4. silt harmless processing method according to claim 3, also comprises the following steps after the mud baking step：
Mud degradation step, planting plants on the mud planting soil are entered to advance to the harmful substance in the mud planting soil
One step is degraded.
5. silt harmless processing method according to claim 1, it is characterised in that pre-treatment step further include as
Lower sub-step:
Mud detects sub-step, and field sampling detects the initial value of the project to be detected；
Judge sub-step, the moisture solution thickness of the mud is confirmed according to the initial value；
Mud moisture solution sub-step, be sprayed in the mud coagulating agent simultaneously by the discharge of mud upper strata ponding
Mud moisture reduction is obtained into the curing sludge that moisture is pre-set moisture content.
6. silt harmless processing method according to claim 1, it is characterised in that the mud isolation step discharge
Ponding is used to inject the pond in harmful substance degradation step.
7. silt harmless processing method according to claim 2, it is characterised in that the default acid-base value standard according to
The mud planting soil territory of use determines.
8. silt harmless processing method according to claim 5, it is characterised in that the field sampling is taken using core pulling
Sample.
9. silt harmless processing method according to claim 5, it is characterised in that the mud moisture solution sub-step
In by excavating the gutter and the sump draining that are connected in the mud.
10. silt harmless processing method according to claim 1, it is characterised in that the oxidant includes permanganic acid
Potassium, hydrogen peroxide, Fenton reagent, persulfate.
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