HU194957B - Method for inspecting and early observing the environmental contamination of existing dangerous chemical agent and fuel storing settlements - Google Patents

Abstract

The method according to the invention makes it possible to detect early soil contamination, even before entering groundwater, on existing soil storage sites. In the vicinity of the storage compartment (9) formed during the process, a barrier (4) is formed in the upper part of the leaking pipeline network (4) on the gravel bed (2) over the waterproofing layer (1), and the openings (5) for the leakage pipeline network (4). a water inlet (7) and a liquid collector (6) are connected. 1 -1-

Description

The present invention is a method for controlling and early detection of environmental contamination of existing hazardous chemical and fuel storage sites.

In and around hazardous chemical and fuel storage areas and sites, the release of material during handling, damage to storage containers and packaging will inevitably contaminate the soil and groundwater. The chemicals leached into the soil by rainwater, infiltrating the groundwater, cause enormous, irreparable damage and damage to the water base. Can also cause poisoning and explosion by entering drains or other objects.

Experience has shown that the spillage of the substance can only be detected over a longer period of time, when it becomes hazardous waste.

There is no reassuring solution to detect pollution before it enters the soil. Over a large area, there is simply no control over the process of contamination, under the most varied packing and storage material. Usually they are only detected in runoff ditches, sewers and groundwater.

The foundations of material storage sites can be found in US Patent No. 3,041,706, where a seven-layer foundation is made from on-site waste. With this solution, the site's power plant waste site is constructed with usable waste and protected from harmful substances.

Similar efforts are being made to develop a waste container known from U.S. Patent No. 4,375,930, which is prepared with a layered foundation. For the permanent storage of hazardous chemicals, barrels embedded in concrete are placed side by side and above each other in the underground storage space. Underneath the concrete slab that forms the basis of the carrier reservoir, various watertight layers are installed, whereby the layer in contact with the slab is covered with foil. During the construction, a drainage pipe is laid in the water-permeable layer to drain the groundwater.

US Patent Publication No. 2,939,007 and U.S. Patent No. 3,990,385 teach specific tasks for protecting the fuel storage and filling area and the ground for sports fields. This task is solved on the one hand in terms of environmental pollution and, on the other hand, in view of the rapid drainage of moisture.

U.S. Patent No. 4,288,174 discloses a reduction in groundwater flow rate to protect groundwater wells located near the site from infiltration of contaminated groundwater. In addition, it allows the creation of areas where groundwater can be kept away from contaminated contaminating sites by influencing flow rates. Thus, the primary purpose of the solution is to reduce or eliminate the contamination of soil adjacent to the contaminated land by creating a depot. This can be achieved by reducing the flow rate of groundwater flowing through the area. The solution is to occupy dangerous chemicals or similar sites by first stopping or watering the groundwater.

It is known to have probe equipment installed in their environment for detecting leakage of underground tanks and pipelines. ("Application 2135/84 for Early Detection of Underground Tanks and Piping Leakage"). However, this vertical system solution is not suitable for early detection of contamination of colonies in a connected area.

It is an object of the present invention to provide a method that enables soil contamination to be detected early, even before it enters the soil.

The inventive idea is based on the recognition that groundwater is trapped in control units integrated with a localization pipeline system to control the environmental contamination of existing hazardous material storage or waste storage sites before spreading into deeper layers or leaving the storage area.

In accordance with its object, the present invention provides a method for controlling and early detection of environmental soil contamination of existing hazardous chemical and fuel storage sites by integrating a localization pipeline and pipeline detection, drainage, and fluid collection units so that and / or forming a gravel bed of water-impermeable barrier layer (8), at least unidirectional, preferably 0.5-1.0% slanted, perforated or perforated tube in the gravel bed, forming a leaking pipe network enclosing the storage space , at detection points that are suitable for the pipeline network, preferably at even high distances at the high points of the network, and at the deep end of the pipeline network, When connecting a liquid manhole to the top of the pipeline network, a water inlet is connected to the top of the pipeline network, and the contamination of the soil through the outlet pipeline network is examined by sampling and / or by means of an instrument.

A further feature of the process of the present invention may be that the storage enclosure leaking piping network is clean as needed.

-2194957 is flushed with water, introduced into the manhole and examined for contamination in the form of drainage, chemical reagents, or instrumented alarms.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention will be described in more detail with reference to the drawings, in which:

The attached drawings show

Fig. 1 is a schematic cross-sectional view of an embodiment of the method of the invention taken along line A-A;

Fig. 2 is a top plan view showing its construction, while Fig

Figure 3 is a plan view of another embodiment.

An essential part of the process is a leakage pipeline network 4 for controlling environmental contamination, which is laid in a gravel bed 2 located around the storage compartment 9, optionally a waterproofing layer 1, which delimits the soil and / or filling below the storage compartment 9. connection points 5, as well as 6 manholes and 7 water inlets are connected to the pipeline network.

Figures 1, 2 illustrate a possible embodiment of environmental pollution control in cross-sectional and plan view. The network of leakage pipelines 4 is located in a one-way slope at the boundary of the storage space 9. The water inlet 7 is located at the highest point of the network of the leakage piping 4, while the liquid collecting end 6 is located at the deepest part. The detection openings 5 are connected at equal distance to the leakage pipeline network 4. The detection apertures 5 are preferably made of tubing, but may also be made by other hole-lining methods. The leakage pipeline network 4 is placed on the gravel bed 2 with a slope of 0.5-1%.

Fig. 3 illustrates an arrangement for monitoring the storage area 9 divided into several smaller surfaces by the leakage pipeline network 4, the slope of which may be one-way or multi-directional. Here, too, the water inlet 7 is located at its highest point, while in the higher intermediate portions it is also possible to introduce water through the sight holes 5.

In any of the embodiments of the method, the leakage pipe network 4 is placed above the waterproofing layer 1 in the gravel bed 2 in each case with the perforation or perforation at the top. Accumulated fluid can be tested during periodic inspection using chemical reagents or by providing instrumental alarm and monitoring equipment.

An additional method for detecting contamination is to flush the drain piping network 4 with clean water. From time to time, clean water is introduced at the highest point of the 4-pipe network, and the collected rinse water is analyzed from a sample taken at one or more locations.

Larger amounts of rainwater entering the drain line 4 can be discharged from the end shaft 6.

The method of the present invention allows for the early detection of soil contamination in large, above-ground storage areas, even before it enters the groundwater, thereby preventing the localization and elimination of the contamination process.

The main advantage of the process according to the invention is that it provides the possibility of regular and continuous control of sources of environmental pollution, early detection of pollution, timely intervention, and prevention of irreparable damage. It also has the advantage of being simple, its installation cost is negligible compared to the protected value. It does not require any special maintenance. Its operation with automatic signaling system does not require constant supervision.

Claims (2)

1. A process for controlling and early detection of environmental contamination at existing hazardous chemical and fuel storage sites, which is constructed by integrating a localization pipeline and a perceptual drainage and collection unit within the pipeline, characterized by the storage (9) environment, 9) forming a water-impermeable layer (1) underneath the soil and / or infill (8) - a gravel bed (2), at least in one direction, preferably at a slope of 0.5-1.0%, into the bed (2) forming a leaking piping network (4) enclosing the reservoir (9) from the haired or perforated pipe at locations suitable for the pipeline network (4), at high points of the network (4), preferably at even intervals, ending in a catchment sump (10) 5) and the bottom of the pipeline network (4) and connecting a water inlet (7) at the top of the pipeline network (4), collecting the soil contamination through the leakage pipeline network (4) into the sumps (10) of the detection openings (5) and the sump (6). , soil contamination is sampled in a manner known per se and / or detected by an instrument. Method according to claim 1, characterized in that a leakage piping network (4) enclosing the storage space (9) is required. -3194957, rinse with clean water, drain it into the end pit (6), and test for contamination in the form of condensation, using chemical reagents or an instrumented alarm system.