CN210966353U - Soil treatment system - Google Patents

Abstract

The utility model discloses a soil treatment system, to the condition that a slice abandonment industry district contains different pollution areas, set up the processing of the contaminated soil of four different pollution sources, can make pointed references and carry out soil treatment, specifically, carry out sampling detection soil before handling, confirm different pollution areas, utilize and dig the module and dig out soil clearly, transport to corresponding processing module through the loader and handle, the soil after handling recycles the loader and backfills; in the middle of the processing procedure, it can carry the waste water that produces in the middle of the soil processing procedure and the foundation ditch rainwater that piles up because of the rainfall set to carry through the pipeline after simple processing and discharge after handling with regard to nearly wastewater treatment plant, can prevent effectively that the rainwater carries the flow direction other regions with harmful element in the soil after the excavation, pollutes soil.

Description

Soil treatment system

Technical Field

The utility model relates to a soil treatment technical field especially relates to a soil treatment system.

Background

In recent years, with the acceleration of industrial transformation and urban expansion processes, industrial enterprises in the peripheral areas of cities are moved, stopped or closed, and original site sites left by part of enterprises are influenced by 'running, overflowing, dripping and leaking' and industrial 'three wastes' emission in the production process, so that site soil is polluted to different degrees, if the sites are not treated and repaired, pollutants remained in the soil can influence urban and human living environments, and enter human bodies through digestive systems, respiratory systems, skin contact and other ways, and the human health is harmed.

In view of the above circumstances, at present, a soil treatment system is lacked, and soil treatment under the condition that a waste industrial area contains different polluted areas can be comprehensively and effectively performed. Therefore, there is a need for a soil treatment system that efficiently addresses the soil remediation problems left behind by abandoned industrial areas.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome the not enough of prior art existence, provide a soil treatment system.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a soil treatment system comprises an excavation module, a treatment module and a water treatment module, wherein the excavation module is used for excavating soil in a remediation area and transporting the soil into the treatment module through a loader for treatment, the treatment module comprises an acid-base contaminated soil stacking bin, a calcium sulfate residue stacking bin, a heavy metal contaminated soil stacking bin and a total petroleum hydrocarbon contaminated soil stacking bin, the acid-base contaminated soil stacking bin transports the acid-base contaminated soil stacked in the acid-base contaminated soil stacking bin into a first pre-screening mechanism through a belt conveyor for screening, the first pre-screening mechanism is provided with two discharge ports, the first discharge port transports screened slag blocks into a screened slag block temporary storage area through the belt conveyor, the second discharge port transports the screened soil blocks into an acid-base neutralization maintenance pool through the belt conveyor, and first maintenance pipelines for feeding neutralization and remediation agents into the acid-base neutralization maintenance pool are distributed on the acid-base neutralization maintenance pool, the calcium sulfate slag stacking bin conveys the stacked calcium sulfate slag to a second pre-screening mechanism through a belt conveyor, the second pre-screening mechanism is provided with two discharge ports, the first discharge port conveys the screened slag blocks to a screened slag block temporary storage area through the belt conveyor, and the second discharge port conveys the screened soil blocks to a flat land area capable of being irradiated by the sun through the belt conveyor for drying the soil blocks in the sun; the treatment module further comprises a vibration stone washer, the vibration stone washer is used for cleaning the screened slag blocks in the screened slag block temporary storage area, the heavy metal contaminated soil stacking bin transports the soil therein to a heavy metal contaminated soil treatment pool through a belt conveyor, a second maintenance pipeline for putting a fixed stabilizing agent into the heavy metal contaminated soil treatment pool is distributed on the heavy metal contaminated soil treatment pool, the total petroleum hydrocarbon contaminated soil stacking bin transports the soil therein to a total petroleum hydrocarbon contaminated soil treatment pool through the belt conveyor, a third maintenance pipeline for putting an oxidizing agent into the total petroleum hydrocarbon contaminated soil treatment pool is distributed on the total petroleum hydrocarbon contaminated soil treatment pool, the water treatment module comprises a temporary wastewater treatment pool, leaching wastewater generated by the vibration stone washer is connected to the wastewater treatment pool through a pipeline, a water pipe is distributed in a foundation pit dug by the cleaning module, and the water pipe is used for guiding rainfall accumulated water in the foundation pit into the wastewater treatment pool, the wastewater treatment tank is connected to a sewage treatment plant through a pipeline.

Preferably, the first pre-screening mechanism and the second pre-screening mechanism have the same structure and are both primary screening machines.

Preferably, the primary screening machine is provided with three discharge ports, and the first discharge port conveys the material with the particle size of 50-100 mm screened out by the discharge port to a screening slag block temporary storage area through a primary screening front belt conveyor; the second discharge gate is through one-level screen belt feeder with the material transport to the mixer below the particle size 50mm that this discharge end was sieved, and a discharge gate returns the material transport to the load wagon that the particle size more than 100mm that this discharge end was sieved through one-level sieve to backfill the coarse grain diameter soil.

Preferably, the primary screening machine is a vibration screening machine.

Preferably, the excavation module comprises a plurality of earthwork construction apparatuses.

Has the advantages that:

the utility model discloses contain the condition of different pollution areas to a slice abandonment industrial area very much, the processing of the contaminated soil of four different pollution sources has been set up, can have pertinence to carry out soil treatment, and simultaneously, it can carry out the waste water that produces in the middle of the soil treatment process and carry through the pipeline and handle the back through nearly wastewater treatment plant and discharge because of the accumulational foundation ditch rainwater set of rainfall to carry out simple processing to have designed the wastewater treatment pond, can prevent effectively that the harmful element in rainwater carries the flow direction other regions with soil after the excavation, pollute soil.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a schematic view of a soil treatment according to the present invention;

fig. 2 is a top view of the first pre-screening mechanism or the second pre-screening mechanism of the present invention for soil treatment;

figure 3 is the utility model discloses a left side view of soil treatment system's first prescreening mechanism or second prescreening mechanism.

In the figure, 1 is a hopper, 2 is a first belt conveyor, 3 is a first-stage screening machine, 4 is a first-stage undersize belt conveyor, 5 is a stirring machine, 6 is a first-stage screen return belt conveyor, 7 is a first-stage screen front belt conveyor, 8 is a vibration stone washer, 9 is a second-stage screen front belt, 10 is a second-stage screen front belt, 11 is a cleaning module, 12 is an acid and alkali contaminated soil stacking bin, 13 is a calcium sulfate residue stacking bin, 14 is a heavy metal contaminated soil stacking bin, 15 is a total petroleum hydrocarbon contaminated soil stacking bin, 16 is a first pre-screening mechanism, 17 is a screening residue temporary storage area, 18 is an acid and alkali neutralization maintenance pool, 19 is a second pre-screening mechanism, 20 is sewage, 21 is a flat ground area, 22 is a heavy metal contaminated soil treatment pool, 23 is a total petroleum hydrocarbon contaminated soil treatment pool, 24 is a waste water treatment pool, and 25 is a foundation pit.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The invention will now be further described with reference to the accompanying drawings.

Example 1:

referring to fig. 1, a soil treatment system comprises an excavation module 11, a treatment module and a water treatment module, wherein the excavation module is used for excavating soil in a remediation area and transporting the soil into the treatment module for treatment by a loader, the treatment module comprises an acid and alkali contaminated soil stacking bin 12, a calcium sulfate residue stacking bin 13, a heavy metal contaminated soil stacking bin 14 and a total petroleum hydrocarbon contaminated soil stacking bin 15, the acid and alkali contaminated soil stacking bin 12 transports the acid and alkali contaminated soil stacked therein to a first pre-screening mechanism for screening by a belt conveyor, the first pre-screening mechanism 16 has two discharge ports, the first discharge port transports screened slag blocks to a screened slag block temporary storage area 17 by the belt conveyor, the second discharge port transports the screened soil blocks to an acid and alkali neutralization maintenance pool 18 by the belt conveyor, and the first pipeline for feeding neutralizing and remediating chemicals into the acid and alkali maintenance pool 18 is distributed on the acid and alkali maintenance pool 18 The calcium sulfate slag stacking bin 13 conveys the stacked calcium sulfate slag to a second pre-screening mechanism 19 through a belt conveyor, the second pre-screening mechanism 19 is provided with two discharge ports, a first discharge port conveys screened slag blocks to a screened slag block temporary storage area 17 through the belt conveyor, and a second discharge port conveys screened soil blocks to a flat land area 21 capable of being irradiated by the sun through the belt conveyor for drying the soil blocks in the sun; the treatment module further comprises a vibration stone washer 8, the vibration stone washer 8 is used for cleaning the screened slag blocks in the screened slag block temporary storage area, the heavy metal contaminated soil stacking bin 14 transports the soil therein to a heavy metal contaminated soil treatment pool 22 through a belt conveyor, a second maintenance pipeline for putting a fixed stabilizing agent into the heavy metal contaminated soil treatment pool 22 is distributed on the heavy metal contaminated soil treatment pool 22, the total petroleum hydrocarbon contaminated soil stacking bin 15 transports the soil therein to a total petroleum hydrocarbon contaminated soil treatment pool 23 through a belt conveyor, a third maintenance pipeline for putting an oxidizing agent into the total petroleum hydrocarbon contaminated soil treatment pool 23 is distributed on the total petroleum hydrocarbon contaminated soil treatment pool 23, the water treatment module comprises a temporary wastewater treatment pool 24, leaching wastewater generated by the vibration stone washer 8 is connected to the wastewater treatment pool 24 through a pipeline, and a water pipe is distributed in a foundation pit 25 dug by the cleaning module, the water pipe is used for draining rainfall accumulated water in the foundation pit into the wastewater treatment tank 24, and the wastewater treatment tank 24 is connected to the sewage treatment plant 20 through a pipeline.

The embodiment of the utility model provides a during concrete implementation, need carry out the sampling and detect, according to polluting soil difference, mark off different contaminated soil distribution region (this embodiment is 4 regions, corresponds 4 processing modules respectively).

And the soil dug and filled in different polluted soil distribution areas is transported to corresponding stacking bins through a loader to be stacked for waiting treatment. In the soil treatment process, the foundation pit excavated by the excavation module (the earthwork construction machine used by the excavation module is mainly an excavator) can inevitably have ponding because of rainfall, and at the moment, a pipeline is laid to drain the ponding to the wastewater treatment tank 24, so that the ponding is prevented from absorbing harmful elements in the foundation pit and then flowing to pollute the soil.

Example 2:

please refer to fig. 2 and fig. 3, the embodiment of the present invention, before treating acid and alkali contaminated soil and calcium sulfate slag, uses the same prescreening mechanism, which can refer to fig. 2 and fig. 3, the prescreening mechanism includes a hopper 1, one end of a first belt conveyor 2 is connected to the discharge end of the hopper 1, the other end of the first belt conveyor 2 is arranged above the feed end of a first-level screening machine 3, and is used for conveying soil into the first-level screening machine 3 for screening, the first-level screening machine 3 has three discharge ends, one of the discharge ends conveys the material with the particle size below 50mm screened by the discharge end to a mixer 5 through a first-level undersize belt conveyor 4, and stirs the material with the particle size above 100mm screened by the discharge end through a first-level screen returning belt conveyor 6 to a loading vehicle, so as to backfill the coarse-grain-size soil, the last discharge end conveys the material with the particle size between 50mm and 100mm screened by the discharge end through a first-level screen front conveyor 7 And (4) conveying the stone to a vibration stone washer 8 for leaching and separating to obtain clean stone with the thickness of 50-100 mm. The prescreening mechanism sets up to a plurality ofly, please refer to fig. 2 and fig. 3 and show, has 2 prescreening mechanisms, demountable installation collecting hopper 9 on the feed end of vibration stone washer 8, and the one end of a plurality of one-level sieve front belt conveyors 7 sets up in collecting hopper 9 top, and the prescreening material that comes from many sides passes through collecting hopper 9 and reentries into vibration stone washer 8.

In a preferred embodiment, the discharge end of the vibration stone washer 8 conveys the cleaned and separated stone materials to a storage bin for temporary storage through a secondary screen front belt conveyor 10.

The primary screening mechanism can only have one line and is suitable for screening and separating in soil remediation of small area. The embodiment of the present invention illustrates two lines, i.e., two production lines. It should be noted that, in actual use, a plurality of production lines can be reasonably arranged according to actual requirements to meet the requirement of soil screening.

It should be noted that the system is not suitable for use with soils with excessive viscosity, and materials with water contents above 50% cannot be treated with the system. Meanwhile, the particle size of the soil fed by the hopper cannot exceed 180 mm. Before screening, an excavator is required to carry out pretreatment, and if stones with large particle size exist after pretreatment, a crusher can be added for carrying out crushing treatment.

It should be noted that the acid-base contaminated soil and the calcium sulfate slag cannot be used in the same vibration stone washer 8, and need to be separately used for cleaning.

The embodiment of the utility model provides an improve at the hopper part: the mesh of the filter screen steel frame at the lower end of the hopper is sawn to be large, and a layer of filter screen steel frame is additionally arranged at the upper end of the feed hopper to block the equipment at the lower end of the large stone block which falls and is blocked.

The angle of each belt conveyor is increased, and the problem of material sticking can be solved.

The embodiment of the utility model provides a select YK-2060 shale shaker as one-level sieve separator. The equipment parameters are shown in table 1:

TABLE 1 YK-2060 vibration sieve equipment parameter table

The screening machine of the above type is called a circular vibrating screen because the motion trail thereof is circular motion, and is novel high-efficiency screening equipment with multiple layers. The device has advanced structure and strong exciting force; the blocking phenomenon of the sieve pores is less; low noise and easy maintenance.

The embodiment of the utility model provides an in the mixer adopt JS3000 biax type compounding agitated vessel, this type of equipment is often used for the stirring of mixture (contaminated soil), has advantages such as stirring productivity ratio height, operational reliability height. Meanwhile, the equipment is large-scale stirring equipment integrating material storage, metering and stirring, and a double-horizontal-shaft forced stirrer is adopted as a matched host machine according to different materials to stir acid/alkali contaminated soil. The parameter table is shown in Table 2.

TABLE 2 JS-3000 biaxial type material mixing and stirring equipment parameter table

Discharge capacity	3000L	Mixer power	110kw
				Feed capacity	4800L	Power of elevator	30kw
Theoretical productivity	150-180m3/h	Mixer power	18.5kw
				Large particle size of aggregate	10cm	Accuracy of water supply	The error is less than or equal to 2 percent

The storage bin of the equipment adopts a linear arrangement and a loading machine for loading, two kinds of aggregates and one kind of powder can be stored simultaneously, the material metering is carried out on the ground, the metered material is conveyed to the material storage hopper through a flat belt and an inclined belt, and the material storage hopper can store one pot of metered material.

The embodiment of the utility model provides a select ZH-1236 type's vibration stone scrubber, its parameter is shown in table 3.

TABLE 3 parameter table of vibrating stone washer

Specification and model	ZH-1030	ZH-1236	ZH-1548
				Screen box wide belt	1000mm	1200mm	1500mm
Length of sieve box	3000mm	3600mm	4800mm
				Power of	80kw	120kw	150kw
Voltage of	380V	380V	380V
				Ton/hour	30-60	40-80	60-100
Long dimension of appearance	3000mm	3600mm	4800mm
				Width of	1600mm	1300mm	2300mm
Height of	2000mm	2270mm	3230mm

According to the scale of the early-stage screening equipment, the yield of stones is 600t/d by calculating according to the soil-stone ratio of 7:3, and ZH-1236 type is selected as the leaching equipment of the project.

The embodiment of the utility model provides a when concrete implementation, go on according to following step:

(1) a210-type excavator needs to be configured to pre-clean large-particle-size stones, large-particle-size building slag and the like in soil in a stockpiling area.

(2) A 30-type loader is matched to be specially responsible for the feeding work of the hoppers of the two primary screening mechanisms;

(3) a 30-type loader is required to be configured to be specially responsible for the feeding work of the stirrer in the area to be detected;

(4) a 50-type loader is matched to be specially responsible for the stone transportation and undersize soil transportation in the whole production area, and written transportation records are made;

(5) a production worker is required to be configured for normal production work from a production line feed hopper to a primary screening machine, wherein the normal production work comprises hopper observation clearing, hopper foundation pit material scattering clearing and belt operation observation, and meanwhile, written records of feeding, clearing, maintenance and maintenance of the two production lines are required to be made;

(6) one production person needs to be configured for maintenance and cleaning of the first-level screening machine of the production line, and if a blockage phenomenon is found, the first-level screening machine needs to be cleaned in time. Cleaning and maintenance work is well done after the working machine is started up and shut down, the phenomenon of excess material stockpiling is avoided for the first-level vibrating screen, and meanwhile, written records of cleaning, maintenance and maintenance are well done.

(7) A production worker needs to be configured to be responsible for the inspection, maintenance and cleaning work of the vibration stone washer, the stirrer and a matched belt, and meanwhile, written records are made.

(8) A production person needs to be configured to be responsible for starting and stopping the generator, daily maintenance of the generator and maintenance work, and written oil records, maintenance records and the like of the generator are made. Meanwhile, the circuit inspection and maintenance work of the whole production line, the inspection, maintenance and maintenance work of the motor of the whole production line and relevant written records are well made.

(9) A manager needs to be configured to be responsible for daily management work of mechanical equipment and personnel, including work of speaking before class, safety education and the like.

In order to ensure full-load, efficient and continuous operation of equipment and ensure that the whole disposal site is clean and tidy, an equipment user is required to configure the equipment according to the quantity of machines and personnel required to be configured.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims (5)

1. A soil treatment system comprises an excavation module, a treatment module and a water treatment module, and is characterized in that the excavation module is used for excavating soil in a remediation area and transporting the soil into the treatment module for treatment through a loader, the treatment module comprises an acid and alkali contaminated soil stacking bin, a calcium sulfate residue stacking bin, a heavy metal contaminated soil stacking bin and a total petroleum hydrocarbon contaminated soil stacking bin, the acid and alkali contaminated soil stacking bin transports the acid and alkali contaminated soil stacked therein to a first pre-screening mechanism through a belt conveyor for screening, the first pre-screening mechanism is provided with two discharge ports, the first discharge port transports screened slag blocks to a screening slag block temporary storage area through the belt conveyor, the second discharge port transports the screened soil blocks to an acid and alkali neutralization maintenance pool through the belt conveyor, and first maintenance pipelines for feeding neutralization agents into the acid and alkali maintenance pool and repairing are distributed on the acid and alkali maintenance pool, the calcium sulfate slag stacking bin conveys the stacked calcium sulfate slag to a second pre-screening mechanism through a belt conveyor, the second pre-screening mechanism is provided with two discharge ports, the first discharge port conveys the screened slag blocks to a screened slag block temporary storage area through the belt conveyor, and the second discharge port conveys the screened soil blocks to a flat land area capable of being irradiated by the sun through the belt conveyor for drying the soil blocks in the sun; the treatment module further comprises a vibration stone washer, the vibration stone washer is used for cleaning the screened slag blocks in the screened slag block temporary storage area, the heavy metal contaminated soil stacking bin transports the soil therein to a heavy metal contaminated soil treatment pool through a belt conveyor, a second maintenance pipeline for putting a fixed stabilizing agent into the heavy metal contaminated soil treatment pool is distributed on the heavy metal contaminated soil treatment pool, the total petroleum hydrocarbon contaminated soil stacking bin transports the soil therein to a total petroleum hydrocarbon contaminated soil treatment pool through the belt conveyor, a third maintenance pipeline for putting an oxidizing agent into the total petroleum hydrocarbon contaminated soil treatment pool is distributed on the total petroleum hydrocarbon contaminated soil treatment pool, the water treatment module comprises a temporary wastewater treatment pool, leaching wastewater generated by the vibration stone washer is connected to the wastewater treatment pool through a pipeline, a water pipe is distributed in a foundation pit dug by the cleaning module, and the water pipe is used for guiding rainfall accumulated water in the foundation pit into the wastewater treatment pool, the wastewater treatment tank is connected to a sewage treatment plant through a pipeline.

2. A soil treatment system as claimed in claim 1, wherein the first and second pre-screening mechanisms are of identical construction and are each a single screening machine.

3. The soil treatment system of claim 2, wherein the primary screening machine is provided with three discharge ports, and a first discharge port conveys materials with the particle size of 50-100 mm screened out by the discharge port to a screening slag block temporary storage area through a primary screening front belt conveyor; the second discharge gate is through one-level screen belt feeder with the material transport to the mixer below the particle size 50mm that this discharge end was sieved, and a discharge gate returns the material transport to the load wagon that the particle size more than 100mm that this discharge end was sieved through one-level sieve to backfill the coarse grain diameter soil.

4. A soil treatment system as claimed in claim 3, wherein the primary screening machine is a vibratory screening machine.

5. A soil treatment system according to claim 1, 2, 3 or 4, wherein the dredging module comprises a plurality of earth working implements.

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