One day you find that the well is not able to work in the usual way? It is a pity that the "eternal" source for water supply does not happen, is not it? I suspect that over time it happened mechanical blockage and want to fix the problem on their own, but do not know where to start and which option to choose?
We can help you cope with the problem and stop on the best option. Tell me, what else there are ways to self-cleaning - The article describes the best practices, applicable in the home, and how to remove the obstruction in the well-equipped, and in generation.
After all the trouble may lie in wait on the drilling stage. Until a casing (working column), primer can fall in production, scoring it.
We also picked up a photograph showing the procedures and tools for self-cleaning. For clarity, the expert attached videorekomendatsii - so cleaning of wells with their own hands will you endure.
The content of the article:
- How to prevent clogging of the well?
Possible causes of blockages
- №1 - the penetration of sand into the casing
- №2 - silting of unexploited wells
Self-cleaning methods well
- Method # 1 - pumping vibrating pump
- Method # 2 - flushing pump surface
- Method # 3 - rinse well with two pumps
- Method # 4 - extraction of sand by a bailer
- Method # 5 - Remove hydraulic impact of pollution
- Method # 6 - flushing gas-air mixture
- How to choose cleaning?
- Conclusions and useful videos on the topic
How to prevent clogging of the well?
"Eternal" wells for water supply can not be. Unfortunately, sooner or later, the owner of the individual water source will face problems. Bad if exhausted aquifer will have to re-drill or deepen existing production. It is difficult and very costly.
The situation is different if the blockage happened well - it is easier and cheaper to prevent than to "treat".
Extending source life promotes adherence of several operating rules:
- Strictly adhere to the chosen drilling technology. Carefully monitor the integrity of the casing and the filter integrity.
- Immediately after the completion of drilling rinse source until clean water.
- Protect well against the ingress of surface water and contaminants, setting a caisson, Headroom. As a workaround, simply seal the top of the casing.
- Prior to the beginning of operation to choose and install a submersible pump at the desired height, Always taking into account the production rate of the well.
- It is desirable not to use a vibrating pump for supplying water. Vibrating obsade in it, depending on the type of ground, a greater or lesser extent provokes penetration of sand into the wellbore or adjacent the soil contributes to silting. Cheap and easy vibratsionnikom can be used for long, for continuous operation is needed centrifugal pump.
- Well should not be delayed indiscriminately water. The ideal operating mode - daily pumping several tens or hundreds of liters of water. He ensured if people are constantly living house. If this is not possible, you should regularly, at least once in 2 months from the well pump at least 100 liters of water.
Implementation of these recommendations, of course, is not to avoid clogging of the well in the future. However, this delay nuisance, ensuring maximum possible for a given source resource efficient operation.
Proper well device - the key to its longevity. On the casing, you must install a special head part, sealing it and serving for safe installation of equipment
Possible causes of blockages
It is worth mentioning about the types of wells clogging, it will help identify the causes of problems and to determine how to clean the hole with their hands.
№1 - the penetration of sand into the casing
"Zapesochivanie" - a problem occurring in shallow sand wells where an aquifer located in sandy interlayer. The well-arranged well sand penetrates obsady in small quantities.
If the power performance is reduced, and the water appear grains, there is something of the following:
- Sand penetrates from the surface - not tight headroom, the caisson.
- Irrationally matched filter, the cells are too large.
- Disrupted the integrity of the filter.
- Leakproof obsady between sections. Not until the end of the thread is twisted, poorly executed welding, corrosion "PROELA" hole in the steel casing, mechanical damage to the plastic.
Eliminate leakages that emerge within the well, it is not possible. Fine sand constantly breaks through the filter, but also to remove it easier, in part it is washed with water rise.
Worse, if the wellbore penetrates coarse sand, with the time source can "swim". That is why special attention should be paid to the quality of installation elements obsady and selection of the filter.
Installation in the casing of sand separator significantly reduces zapesochivanie filter and prolongs the life of the well on the sand
№2 - silting of unexploited wells
Over time, the soil column in the filter area to accumulate the smallest particles of clay, rust, calcium deposits, sedimentary rocks.
When the number is too large, the pores in the soil and groundwater of the mesh cell (perforated, slit) of the filter become clogged, the water becomes more difficult to penetrate into the barrel making.
Well production falls, there is its "silting" up to the complete disappearance of the water. The source, which is used regularly, the process is slow, stretching out for decades. Without regular pumping well may silted up a year or two.
If cleaning the well from silt to spend time without waiting until it is completely dry up, it is likely to give the source a "second life". Water will be supplied in a sufficient water supply for private houses volume.
The water entering into the well through the filter, carries with him fine particles of sludge. Soil siltation occurs in the vicinity of the filter. The suction zone also accumulate calcium salt, if high water hardness
Self-cleaning methods well
As a self-clean the well, which was zapesochivanie or silting?
tassel three principles: pump, the circulating wash liquid or blow compressed air. Methods used, based on the above principles, more than:
Method # 1 - pumping vibrating pump
It is not always effective, but it is a very simple method to restore well productivity - pumping vibrating pump.
Vibratsionnik, which is not recommended for a long time during the operation of the source, the purification of the sand is just better suited for the pump.
Mainly due to the water quality is undemanding. He is easier to tolerate the pollution of the pumped liquid with sand, "swallows" even small stones.
The abrasive can pretty quickly bring down non-return valve, but the item is a cheap and it can be replaced by yourself for a few minutes.
Vibrating pump costs several times less productive, but more sensitive to abrasion circulation pump. Even if vibronasos "burn" during extreme pumping pumping, financial damage is not so great.
Irregular well operation leads to silting up of the bottom and a substantial reduction in the volume of water pumped
vibration-type pump helps remove sludge from the well quickly and efficiently
Price of the vibration of the pump unit provides the ability to donate them after cleaning
Note that vibrating cleaning systems are suitable only those wells, whose inside diameter at least 2 cm larger than the diameter of the pump
Slight problem of the vibration of the pump is easy to fix directly on the site with his own hands
When cleaning heavily silted wells will have to disassemble the unit and cleaned several times
Dirty water derived from the production of the water intake pump during cleaning, better draining capacity in advance harvested
Pumping water from the well should be as long as will not produce from the clear water flow
It cleaning vibrating pump wells
Vibratory pump for pumping production
This device budgeted cost
Suitable water well diameter
Problems vibratsionnika eliminated during cleaning
Dismantling vibrating nasossa
Collecting water during the cleaning wells
Pumping water from the well to the transparency
Suitable pumps for pumping borehole: "Brook", "Kid".
Cleaning the wells pumping vibrating pump does not help to cope with the serious soil siltation, but is able to remove a large amount of sand that has penetrated into the casing.
However, provided that the well is shallow. While climbing over 30-50 m vibropompy performance drops significantly, depending on the model. Please note: we only suitable pump to the lower water intake.
To vibratsionnik actively sucking dirt, it should be omitted almost sandy sediments, raising above the bottom only a few centimeters. As the removal of sand it level will decrease, and you need to lower the pump.
Continuous operation time should not exceed half an hour, the pump should be turned off periodically for 10-15 minutes to allow to cool.
If the sand comprises pebbles exceeding 3-5 mm in diameter, they will be under the tamp the membrane, preventing the flow of water. Release membrane can only raising pump to the surface.
vibronasosom cleaning method is not always effective, and fairly long. But the simple and requires almost no physical human intervention.
Vibrating pump is quite simple and reliable. When pumping a high probability of failure of the valve, but it is inexpensive and easy to replace
Method # 2 - nThe flushing pump surface
Effectively remove fine sand, rust and turbidity of the casing can, feeding water into the well from the surface.
Not to turn land into a swamp, washing is better to organize a closed cycle. Especially if there is no nearby source of clean water (rinse water from a source of the water is not recommended open).
To this should be reserved capacitances, enclosing a liquid volume equal to the total (from bottom to top) of the casing capacity.
The washing liquid by a pump to circulate between the well and capacity. Pollution will accumulate at the bottom of the tank, they will have to be removed periodically. Require powerful pump, may be added to a solution of chemicals.
For example, orthophosphoric acid, dissolving layers of rust and calcium deposits.
Be sure that the acid was quenched with baking soda, and after the application of chemicals to be well restored to pump at least 6 hours.
Wellhead tip instead be set nozzle guide flushing backflow into the reservoir. And washing can be carried out not in a closed cycle by pumping water into the well from a neighboring pipeline.
In this case, there is no need to "bother" with tanks, but should provide drainage for dirty water and make sure that she did not get back to obsadu.
The water is fed down a hose, the length of which should be enough to ensure that it lies directly on the bottom. Method of washing the surface with quite effectively cleans the filter.
Washing the surface with better implement closed loop, this would require a capacity of the capacity, comparable with the internal volume of the casing (+)
Method # 3 - rinse well with two pumps
Deep (over 50 m) well is problematic wash with vibratory feeding pump or water from the surface.
Vibratsionnika power is not enough, and when applying a significant portion of the top pollution will not be able to overcome the significant thickness of water and then sink to the bottom.
Significantly improve washing efficiency may be used for this two pumps.
Cleaning water intake generate two vibrating pumps efficiency is particularly
Both pumps are fixed alternately to the wire is dipped into the wellbore
Lower pump is connected in an inverted position, it stirs the water pumped
Lower pump operates as a projectile destroying yl upper - pumps the dirty water from the well
Rinsing well with two pumps
A system for cleaning two pumps
Lower pump water turbidity
Pumping upper pump
A second embodiment of cleaning involves the use of two different types of units: a surface and deep well pump.
The first pump is located at the top, submits washing liquid at the bottom of the well, raising pollution. Second, submersible centrifugal pumps out the water from the sand and silt at the surface.
To remove the contaminants can use the pump, which is installed in the well, it is not necessary to take out the audio, or even sink below the point of suspension.
Home - lower pipe feeding water to the bottom, passing it in a narrow casing near the submersible pump. It should be understood that in the presence of water, sand and small stones pump will be subjected to increased wear.
Driving movement of water in the washing well with two pumps in a closed cycle
Method # 4 - extraction of sand by a bailer
Method of cleaning sand from the well via the bailer is very effective for removing from the casing of a large amount of sand, stones and fines compacted deposits.
However, almost useless if you need to clean the mud from the filter and the adjacent ground. Bailer - a segment of the steel pipe and a half meter long with a valve at one end and a lever-eye for the cable on the other. The design is quite simple - do bailer get their own hands.
Bailer design with ball valve. When the projectile cuts into the sand, the ball rises, the valve opens into the hollow tube receives pollution
The valve is a heavy steel ball held by a washer, which is fixed on a threaded joint.
To clean the intake Bailer require peculiar drilling machine such as a tripod with the apex unit
Bailer - drilling tool in a pipe with a valve at the bottom and a window for discharging shattered rocks
To clean the wellbore by mud and sand accumulated not necessary to use a tool with a toothed bottom. Excellent handle ball valve
Effectively capture contamination at the bottom will produce Flap valve with one or two flaps
Homemade machine to work with Bailer
The standard bailer design
bailer Valves for cleaning wellbore
Flap valve bailer
The water from the casing is desired to deflate completely. Bailer sharply lowered at the bottom of the well. Valve, crashing into the sand, open and Bailer gets a certain amount of sand.
Shell lifted to the surface, contamination shake. The process is repeated several times. Bailer can wield by hand, but it's hard, even together. Omit heavy-lift shell and handier steel cable with a tripod or winch with block.
Bailer manually work with extremely tedious, it is desirable to stock a tripod with a lifting unit
Bailer desired diameter can be bought at specialized companies, hire or make yourself. In the process of working with the shell should be careful when approaching a filter: it is likely to damage the fine mesh.
Recent pollution centimeters closer to the bottom is better to remove a different method, where there is no impact.
Method # 5 - theThe pressure of hydraulic impact of pollution
Method surge effective in removing sludge from the filter and the adjacent soil.
If sand is scooped out of the casing (or was not there), and after prolonged pumping or washing water never comes into the well in a sufficient amount, probably there was a strong soil siltation. Formed silty cork.
In most cases manage to clean the wells with their own hands with the help of hydraulic method, "shake" the cork.
For this it is necessary to make simple shell: heavy pipe diameter slightly less than the casing so that it fits with a small clearance inside. The end face of the projectile must be tightly welded shut, and at the opposite end has lugs for fastening of the cable.
The hole should be filled with water for a few meters. In the water it makes sense to add phosphoric acid: it dissolves calcium deposits and helps get rid of flakes of rust. Projectile drastically dropping down into the water. Raise, throw again.
Poorudovav so couple of hours, the casing is filled to the brim with liquid, then washed or pumped. If the desired result is not achieved, the process is repeated.
Often have to spend tens of cycles to sufficiently remove silt and calcium deposits.
Projectile for cleaning wellbore hydraulic impact must be heavy
Method # 6 - nThe flushing gas-air mixture
Purification of the well by means of gas-air mixture (bubbling).
At the bottom of the well through the gun, located in the interior of the sand and silt (it is necessary to literally try to stick), continuously fed by a powerful air compressors. Bubbles rising to the surface, carries with it pollution.
To ensure spout dirty water from a well in it always have to pour washing liquid. This can be done both with a pump or manually.
You can organize the circulation of water in a closed loop between the well and prefab capacity.
Combined washing method with simultaneous purging with compressed air is not particularly productive. Cleaning takes place slowly, the process can take several days, or even weeks, if heavy contamination.
However, bubbling has certain advantages over alternative technologies, and in some cases is the only reliable way to clean wells and filter sand and sludge, pumping water if not given the desired result.
Alternative, highly effective methods of removing sand by mechanical action (bailer) and silt hydraulic impact sediments pose serious vibrations that may damage the filter, if it is made of fine grid.
Probability destroy or provoke a "collapse" of flimsy plastic and even worn steel obsady even higher. This may completely withdraw from the source of water supply system.
At the same time washing-blowing air-gas mixture - the most sparing technology, it does not inflict any damage to the well.
Purge well with compressed air - not a quick process if very dirty, but safe
How to choose cleaning?
Determine exactly because of what fell well flow rate, it can be difficult even for an expert. As a rule, the pollution is complex. If the pump is "chased" with water sand, it does not mean that the soil is not silted.
When procleaning well with their hands should be patient. You may have to apply several methods consistently and how to try before you give a satisfactory result.
We recommend starting with the simplest: pumping vibronasosom. If the bleeding does not help, go to the washing. With washing the start if the power is almost exhausted. Scoop out the sand, if it at the bottom of a lot of help bailer.
But it can not be used for the plastic casing, for steel only. Polymer trunks use only bubbling. If there is no sand, no water in the steel obsade - proceed to hammer technology.
This, of course, if not dried up the aquifer itself. Rental washing machines, of course, flies in a penny, but the cleaning efficiency is significantly higher than when using artisanal methods.
Conclusions and useful videos on the topic
At the end of - the useful video, wherein the method steps shown available washing a blocked wells:
Note that cleaning of wells from sand and mud can be very difficult. And not the fact that it is generally able to do on their own. A careless handling by mechanical shells can generally cause significant damage to the water source.
At the same time there is a special technique that is very effective and largely restores wells characteristics.
Do you have personal experience in cleaning wells in the area? Want to share effective practices or ask questions on the topic? Please leave your comments - feedback form located below.