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What are the construction steps of seepage-proof geomembrane?
- Pave along a certain direction smoothly with proper tension to adapt a small amount of subsidence. 2. set aside 10 cm along the edges of geomembrane, use professional heat-welding welder during welding, and use sack closers to stitch geotextile. 3.as for paved geomembranes edge, oil stains, water, dust and so on can not be found in seams of geomembranes so as not to affect the quality of welding. 4. PE single films on both sides of seams must be adjust well before welding, then reserve a certain with before lapping, and the lapping width is generally 6 to 8 cm which needs to be smooth and wrinkle-free. 5. construction procedures: weld PE film stitch the understratum cloth turn over the cloth and stitch the upper cloths
What is the mechanism of homogeneous membrane pressure transmitter?
- Differential pressure transmitter is used in order to avoid the direct contact with the isolated mebrane of the transmitter. It will use the transmitter to measure membrane chamber with stainless steel capillary (about 3mm in diameter pipe, plus protection Unicom to a few meters to tens of meters at one or two (pressure or differential pressure) into the flange form measurements of film box and the middle filled with conductive medium (silicone oil), so that when the flange is connected to the device, it can be used to measure. it is applicable to isolate the high temperature medium and transmitter; measure the dielectric of transmitter sensitive element with corrosion; measured medium due to the environment or temperature and solidification or crystallization; replace the measured medium and it needs measuring rigorous purification head; suspension liquid or high viscosity media; measuring head must maintain clean and sanitation; sealing pressure measuring container.s
What's the repair method of membrane keyboard?
- Method steps are as follows: 1. Disassemble the keyboard. Note that when you disassemble the keyboard, be sure to make the button surface (that is our operation side) downward, and circuit board upward, otherwise, the conductive plastic on each key may come off consequently, bringing trouble to your repair work. 2. Disassemble the circuit board. There is usually a layer of membrane made of soft plastic on the circuit board, and key flat cables are engraved on the membrane. Preferably use the cotton soaked in alcohol with the concentration of more than 97% (the cotton soaked in medicinal alcohol with the concentration of more than 75% is also ok, because I once used , but it is best to use the former one) to gently scrub the circuit board twice. For the circuit where key failure happens, scrub it more times. 3. Examine the conductive plastic of the keys which don't work, and if a lot of dirt is accumulated on the plastic, scrub it in the same way as the above. Suppose the conductive plastic is damaged, then I advise you to replace the conductive plastic on the not commonly used keys to the damaged part. Although in this way, it can not play all the keyboard functions, but at least it can extend the life of the commonly used keys. 4. Remove dirt in the inside corners of the keyboard with tools of writing brush, tiny brush, etc. and be careful to be gentle.s
What other material can be used to prevent leakage in the fish pond except cement ? I have heard of geomembrane, but I do not know whether it is good?
- It is best to use geomembrane to prevent seepage in the fish pond.s
How to deal with oil slick on fish tank?
- The reasons that there is a layer of oily dirt on the surface of the water: 1. tap water contains small amounts of impurities and organics, after staying in the tank for a period of time, the organics and grease dissolved in water and surfaced. 2. 80% of the algae components are "oils". After the death and rotting of algae, oil would be dissolved in water, and then surfaced. When infusing new water, it will rush out oils attached to the aquatic plants and cylinder wall, and then surfaced to generate oil slick on water surface. 3. Oils generated by wreckage of microorganism or old waste, residual feeds, and other organics. When there is no water flowing, the oil slick is the worst. 4. The filter materials in filters are too dirty so as to spill oil. Influences of water oil dirts: 1. impede exhaust gas or water temperature escaping, give rise to early deterioration of water quality and increase water changes. 2. obstruct light source into water, affecting photosynthesis of plants. Solutions: 1. Using the oil slick processor to make the oil slick into the filter, and then using the filtering cotton in the filter to adsorb, at last decomposing bacteria by nitrobacterium. 2.Collect oil slick in the cup slowly and then discard it. 3. Use oil-absorbing sheet to absorb, put an oil-absorbing sheet at the opposite corner(oil-slick aggregated area) of water outlet to absorb oil slick. 4. Install trumpet funnel commingler to absorb oil slick, mix it with water, and it will be decomposed through absorption by filtering cotton. 5. Remove contamination in the filter. 6. Feeding fish which lives on oil such as highfin coralfish or black mollyack, which can reduce the film production. 7. The most recommended and the only way of tackling the problem is to establish a stable biochemical system.s
Concrete and reinforced concrete construction program
- (1) template design, process design based on fair-faced concrete wall height of 13m, the length of 34.6m, a thickness of 0.5m, the design of the wall cicada seam topstitching requirements, using the wall template with a thickness of 12 mm, 1220 × 2440mm of Plywood covered were assembled, smooth bamboo has high strength, good toughness, smooth surface, wide-format, less patchwork, easy mold release characteristics. (2) On the basis of template installation concrete pouring is completed, the base elevation of the top of the concrete to be strictly controlled to ensure that the level on the wall template. Control template verticality is the key step, each template before fixing must be strictly controlled. Template vertical transport of scaffolding on the use of hand hoist, horizontal transport using manual handling. Templates in the handling process to the use of surface protection, to ensure that will not be damaged. To ensure that does not leak between the template and the template pulp, cracks in the template posted double-sided adhesive to ensure continuous tightly between two templates. Before template installation to wipe clean the surface evenly coated with a release agent. (3) the template of bolt and bolt arrangement using reinforced through the wall sleeve to add plug positioned to ensure that the position of the perforations through the wall tight to prevent leakage of plasma, wall bushing strength sufficient to locate the template spacing, resistance to new concrete pouring liquid pressure without generating the template gap is too large, plasma leakage phenomenon.s
Geotextile and geomembrane is not the same product ah?
- Not the same, the two materials are not the same, the effect is not the sames
What materials are used to make HDPE geomembrane and HDPE anti-seepage film?
- They are all amde from HDPE material.s
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