Micro Irrigation System In The Application Of Filtration Equipment
Micro-irrigation system is usually pumps, meters
, control valves, filters, first composed of water distribution hub and charged with the task of the trunk, branch, composed of capillary pipe system and water supply directly to the roots of various crops form emitter of three parts. Irrigation emitter of which is a task to complete the Last Stage of key equipment, known as micro-irrigation system in the heart of the work to enable the emitter, filter equipment selection and performance is essential. If the choice of filtration equipment failures, resulting in emitter plug will cause uneven water distribution and system performance degradation, causing paralysis of the entire micro-irrigation system, so to spend a lot of manpower and financial resources to rule out plug or rebuild the system.
Filtration equipment has the following types:
(1) trash rack (screen) is mainly used for river bank with a larger volume of debris in ponds for irrigation water, the intercept litter Grottoes, weeds and other large floating objects, etc., to prevent debris into the settling ponds or cisterns. Trash simple structure, can source their own design and production of the actual situation. Primary Trash Screen (network) is installed in the water pump inlet in a net-trash rack that primary purification treatment facilities, mainly for containing a large number of weeds, debris and algae source of water intercepting sediment.
(2) settler tank is irrigation water purification facilities in one of the primary treatment, although a simple and ancient method of water treatment, but a variety of sources to solve the problem of effective water purification and economical one kind of treatment, the role of sedimentation tanks in two ways; clear presence of solid material in water. When the water is too much sediment, the use of screen filters and filter media lost due to frequent washing effect, such cases from the primary sedimentation tank can function as a filter. removal of iron material. Carbon dioxide dissolved in groundwater, due to lower pressure in the settling tank, water temperature and the escape, the water pH value increases, causing iron oxidation and precipitation of material.
(3) centrifugal filter (also known as sand separator) is mainly used for well water sand removal. Centrifugal filter works by high-speed rotation by the centrifugal force generated by water flow, will sand and other heavy impurities separated from the water, it is no internal filter, and no removable parts, service and maintenance easy. Centrifugal filter at the bottom of sand room must be frequently washed to prevent the deposition of sediment into the system again. Or less than the proportion of the organic impurities in water, centrifugal separation filter is poor, only within a certain flow, centrifugal filter to play its due effect on water purification.
(4) sand filters used reservoirs, pools, dams, channels, rivers and other open water before the water level in the organic filter. It is the use of gravel as a filter media, water into the filter tank through the inlet, through the sand trapped between the pore closure and the purpose to achieve the filtering. Sand filters and reliable, high cleanliness in all filters, sand filter treatment with organic impurities and inorganic impurities in water are most effective, and can be uninterrupted water supply. As long as the organic content in water more than 10mg / L, regardless of the number of inorganic content, should use sand filters.
(5) comb filter (also known as mesh filter) This is a simple and effective filtration equipment, cost is also cheaper, at home and abroad the most widely used irrigation systems. It's filter media is made of nylon or stainless steel mesh sieve. Irrigation water is mainly used for filtering silt, sand and dirt scale, etc., can also be used to filter a small amount of organic contamination of irrigation water, but slightly higher organic content filtering effect when the poor, especially when the pressure is high, a large number of organic contaminants will be squeezed through the screen and into the pipe, causing the system with emitter plugging. Comb filter variety. By installation can be divided into vertical and horizontal; by manufacturing materials can be divided into plastic and metal; by cleaning methods can be divided into manual cleaning and automatic cleaning; by closed or can be divided into closed and open type. Comb filter from the screen, housing, roof and other major components. Filters use different parts of the corrosion of metal or plastic pressure manufacturing. System main screen filters generally made of stainless steel wire for branch pipes and capillary on the filter, the screen can also be made of nylon or copper wire.
(6) laminated filter that filters are a large number of very thin by the overlapping circular laminated together and lock to form a cylindrical filter, each round has two laminated surface, side distribution of many S-shaped filter tank, the other side for a large number of concentric ring filter tank. If laminated different filter filtering capabilities, its lamination on S-shaped and ring slot sizes have different filters, and comb filter through the filter of laminated filter ability to mesh, said generally that kinds of filters filtering capabilities between 40 to 400 mesh.
Micro Irrigation System In The Application Of Filtration Equipment
By: dpdp
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