CN205990289U - A kind of processing system of salt-soda soil bitter - Google Patents

Abstract

The utility model discloses a kind of processing system of salt-soda soil bitter, this system includes：Balancing tank, grid pond, softening depositing reservoir, sand filter, accurate filter and membrance concentration defecator.System of the present utility model can obtain brackish water recharge soil using salt-soda soil row's alkali water in a canal purified treatment, plantation not only Salt And Alkali Tolerance but also there is the plant of economic worth, and softening depositing reservoir, the treating capacity of sand filter, accurate filter and membrance concentration defecator can be reduced, improve the life-span of high performance membrane thickening filtration device film.

Description

A kind of processing system of salt-soda soil bitter

Technical field

This utility model is related to the purified treatment reuse technology field of rural sewage, in particular it relates to a kind of salt-soda soil is bitter The processing system of salt water.

Background technology

China there are about 0.27 hundred million hectares of salt-soda soil, wherein ploughs 0.06 hundred million hectares, 0.21 hundred million hectares of saline-alkali wasteland, main point Cloth northeastward, North China, Northwest inland area and North of Yangtze River coastal area, compare and concentrate the area that is distributed in flakes to have Qaidam Basin, Tarim Basin periphery oasis and Northern Piedmont of Tianshan Mountains bajada area, Hetao Plain, Yinchuan Plain, North China are put down The former and Huanghe delta.

Salt-soda soil is to be formed under certain natural conditions, and the essence that it forms is mainly various ease of solubility salts on ground Redistributing of horizontal direction and vertical direction is made in face, so that the upper soll layer in collection salt area for the salinity builds up. Weather effect, the factor such as farming technique is unreasonable, level of ground water is raised, all can lead to the salinization of soil.

Perniciousness harm cause a large amount of in, low-yield land, the anions and canons that crop is harmful to are many, make large area soil resource difficult To utilize, overall productivity in agriculture declines.At present administer saline-alkali soil it is most useful that to soil by the way of washed off soil Carry out salt discharge alkali, i.e. the desalinization of soil by flooding or leaching.Excavate irrigation and drainage system on salt-soda soil, in the way of broad irrigation, water is poured in salt-soda soil, makes Soil salt dissolves, by under ooze and be discharged in deep soil or drip washing is gone out saline and alkaline for the solubility in topsoil, row's alkali is penetrated in side Canal is excluded.It is high to water resource degree of dependence, needs to consume around salt-soda soil more than 50% freshwater resources.

China's saline alkali land drainage water yield is very big, and this part is leached the salt getting off and alkali, without scientifically being processed, As time goes on, Secondary Saline and the serious ecological problems such as surface water pollution of non-wetland with saline-alkaline certainly will be caused.

Obtain brackish water recharge soil using salt-soda soil row's alkali water in a canal purified treatment, plantation not only Salt And Alkali Tolerance but also there is economy The plant being worth, makes throughout the year green plant the in salt-soda soil cover, the ecological environment to Chinese entirety will produce the improvement of essence.Typically In the case of, irrigated land using salt-soda soil row's alkali water in a canal purified treatment, chemical fertilizer, pollution by pesticides are few, particularly salination desert, more It is no pollution.It is in tight balance in national cultivated land resource and population speedup, and currently suffer from the big back of the body of different degrees of agricultural pollution Under scape, saline-alkali wasteland is transform as good farmland, newly-increased farmland not only can be provided for country, but also can significantly alleviate freshwater resources Crisis, arable land crisis of resource and soil Saline-alkalized land crisis.Promote the plantation of green ecological circular agriculture pattern for China, While producing huge economic benefit, more country is brought with huge ecology and social benefit.

Utility model content

The purpose of this utility model is the processing system providing a kind of salt-soda soil bitter, and this system can utilize bitter Purified treatment obtains brackish water recharge soil, and not only Salt And Alkali Tolerance has the plant of economic worth again for plantation, and can reduce soften clear Clear pond, the treating capacity of sand filter, accurate filter and membrance concentration defecator, and improve the longevity of film in membrance concentration defecator Life.

To achieve these goals, this utility model provides a kind of processing system of salt-soda soil bitter, and this system includes： Balancing tank, grid pond, softening depositing reservoir, sand filter, accurate filter and membrance concentration defecator；The setting of described balancing tank There are water inlet and bitter outlet, described grid pond is provided with straw straw screen or mat, bitter entrance and absorption water out, described softening Depositing reservoir is provided with absorption water inlet, softens depositing reservoir sludge outlet and soften water out, and described sand filter is provided with sand filter Soften water inlet and sand filtration water out, described accurate filter is provided with sand filtration water inlet and fine straining water out, described membrance concentration Defecator is provided with fine straining water inlet, concentrated water outlet and less salt water out；Wherein, it is fixed with aluminium oxide in described straw straw screen or mat Layer, the mass ratio of described straw straw screen or mat and alumina layer is 1：(0.1-10)；The bitter outlet of described balancing tank and grid The bitter entrance connection in pond, described grid pond is adsorbed water out and is connected with the absorption water inlet softening depositing reservoir, described softening The softening water out of depositing reservoir and sand filter soften water inlet and connect, the sand filtration water out of described sand filter and accurate filter Sand filtration water inlet connects, and the fine straining water out of described accurate filter connects with the fine straining water inlet of membrance concentration defecator.

The beneficial effects of the utility model are：

When bitter advanced treating is carried out using system of the present utility model, employ grid pond, soften depositing reservoir, sand filtration Pollutant in bitter not only can be carried out effectively by pond, accurate filter, the integrated technique system of membrance concentration defecator Separate, play the effect of purification of water quality moreover it is possible to retain utility, improve the utilization rate of water resource.

Used in system of the present utility model, straw straw screen or mat is woven by the crop material such as corn straw or straw or phragmites communiss Form, the planktons such as the pollutant such as the Organic substance in bitter, nitrogen, phosphorus, silt and algae are tentatively intercepted, filter, Absorption, sedimentation, degraded, can reduce the suspended solid treating capacity softening depositing reservoir, sand filter and accurate filter, improving this is The efficiency of array apparatus and life-span.In use, straw straw screen or mat can regularly replace according to water quality requirement, the straw changing Stalk straw screen or mat can be additionally used in the production of biogas, bio-fertilizer etc., realizes the recycling of garbage.

Due to the membrane material of membrance concentration defecator, that the adsorption effect of fluorine is not so good as with other divalent ions is good, and fluorion Larger to the aging effects of membrane material, therefore, general bitter will carry out fluorine removal process before carrying out membrance concentration filtration treatment.This Alumina layer in the straw straw screen or mat of utility model can reduce the content of nitrogen, phosphorus and fluorine in bitter, reduces in bitter Pesticide and chemical fertilizer content, enable in particular to the Oil repellent being greatly lowered in bitter, so that bitter is to carry out film dense Need not carry out fluorine removal process, reduces cost before contracting filtration treatment, and the fluorine treating capacity of subsequent film thickening filtration device can be reduced, Improve efficiency and the life-span of membrance concentration filtration system simultaneously.

Soften depositing reservoir and include many table apparatus, floor space is little, save construction investment, capacity of resisting impact load is strong, effect Rate is high；Sand filter goes float and Organic substance in eliminating water, is that subsequent treatment process provides guarantee, membrance concentration defecator has The features such as have compared with low operating pressure, higher flux, relatively low operation and maintenance of equipment expense.

The bitter rinsing salt-soda soil, using water wisely can be reused using system of the present utility model, do not pollute ring Border.Process the brackish water irrigation common saline land and serious saline land of institute's output using this utility model system, the saline and alkaline of soil can be reduced, The saline and alkaline that soil can be kept for a long time, in proper level, is returned using the brackish water that salt-soda soil row's alkali water in a canal purified treatment obtains Fill soil, not only Salt And Alkali Tolerance again has the plant of economic worth for plantation, make that plant growing way is more preferable, yield is higher, to Chinese entirety Ecological environment will produce essence improvement.

Other feature and advantage of the present utility model will be described in detail in subsequent specific embodiment part.

Brief description

Accompanying drawing is used to provide and further understands to of the present utility model, and constitutes a part for description, and following Specific embodiment be used for together explaining this utility model, but do not constitute to restriction of the present utility model.In the accompanying drawings：

Fig. 1 includes a kind of structural representation of specific embodiment of the processing system of this utility model salt-soda soil bitter Figure.

Specific embodiment

Below in conjunction with accompanying drawing, specific embodiment of the present utility model is described in detail.It should be appreciated that herein Described specific embodiment is merely to illustrate and explains this utility model, is not limited to this utility model.

This utility model provides a kind of processing system of salt-soda soil bitter, and this system includes：Balancing tank, grid pond, Soften depositing reservoir, sand filter, accurate filter and membrance concentration defecator；Described balancing tank is provided with water inlet and bitter Outlet, described grid pond is provided with straw straw screen or mat, bitter entrance and absorption water out, and described softening depositing reservoir is provided with absorption Water inlet, softening depositing reservoir sludge outlet and softening water out, described sand filter is provided with sand filter and softens water inlet and sand filtration Water out, described accurate filter is provided with sand filtration water inlet and fine straining water out, and described membrance concentration defecator is provided with essence Drainage entrance, concentrated water outlet and less salt water out；Wherein, it is fixed with alumina layer in described straw straw screen or mat, described straw straw screen or mat Mass ratio with alumina layer is 1：(0.1-10)；The bitter outlet of described balancing tank and the bitter entrance of grid pond Connection, described grid pond is adsorbed water out and is connected with the absorption water inlet softening depositing reservoir, the described softened water softening depositing reservoir Outlet softens water inlet with sand filter and connects, and the sand filtration water inlet of the sand filtration water out of described sand filter and accurate filter is even Logical, the fine straining water out of described accurate filter connects with the fine straining water inlet of membrance concentration defecator.

According to this utility model, straw straw screen or mat can be to the pollutant such as the Organic substance in bitter, nitrogen, phosphorus, silt and algae The planktons such as class are tentatively intercepted, are filtered, are adsorbed, are settled, are degraded, and the straw in straw straw screen or mat can be selected from Oryza sativa L. straw At least one in stalk, potato class straw, rape stalk, cotton stalk, Caulis Sacchari sinensis straw, corn straw, straw and reed straw.Straw Alumina layer in stalk straw screen or mat can reduce the content of phosphorus, nitrogen and fluorine in bitter, reduces subsequent film thickening filtration device Processing load, in alumina layer, the specific surface of aluminium oxide can be 50-300 rice²/ gram, pore volume can for 0.2-1.2 milliliter/ Gram.In alumina layer, existence form this utility model of aluminium oxide is not restricted, for example, can be the aluminium oxide of tight arrangement Bead, those skilled in the art can adjust the gap length of alumina layer as needed.

According to this utility model, soften depositing reservoir it is also possible to referred to as high density softens depositing reservoir, be those skilled in the art Known, coagulating basin, coagulation apparatus can be included, soften pond, softening equipment and flocculation tank and sloping plate deposition concentration basin； Coagulating basin, softening pond, flocculation tank and sloping plate deposition concentration basin are sequentially communicated；Coagulation apparatus, are positioned in coagulating basin, are used for Coagulant, flocculation aid are mixed with absorption water, removes float therein；Softening equipment, is positioned in softening pond, for by stone Ash, sodium carbonate are mixed with absorption water, remove temporary hardness and part permanent hardness, and described softening depositing reservoir sludge outlet is located at soft Change on pond.Described coagulation apparatus and softening equipment are well-known to those skilled in the art, and this utility model repeats no more.

According to this utility model, described softening depositing reservoir can also include sewage sludge storage pond, sludge dewatering equipment and mud and return Stream device；Described sewage sludge storage pond can include storage pool sludge inlet and storage pool sludge outlet, described sludge dewatering equipment bag Include dewaterer sludge inlet, dewatered sludge outlet and water out, described sludge refluxing apparatus can be provided with returned sludge entrance Export with returned sludge, described softening depositing reservoir is also provided with softening depositing reservoir sludge inlet；Described storage pool mud enters Mouth can connect with softening depositing reservoir sludge outlet, and described storage pool sludge outlet can connect with dewaterer sludge inlet, institute State returned sludge entrance to connect with softening depositing reservoir sludge outlet, described returned sludge outlet can be dirty with softening depositing reservoir Mud entrance connects.It should be noted that the described sludge inlet softening depositing reservoir and the flocculation reaction being arranged on softening depositing reservoir Chi Shang, makes returned sludge and raw water form " the muddy water floccule body " of high concentration again, make mud have very strong adsorption bridging and Volume sweeps effect, after abundant flocculation, the larger molecular organicses in raw water is adsorbed and precipitates, and the mud of precipitation passes through swash plate After precipitation concentration pond is concentrated, send softening depositing reservoir again.

According to this utility model, described sand filter is well-known to those skilled in the art, can for TGV sand filter or The high rate activated sand filter of TGV, can remove oil removal wherein further；Blowback filter is may be provided in described sand filter The backpurge system of bed, can remove the filtration of particulate matters body of close attachment on deep layer filter bed, the recoil of the high rate activated sand filter of TGV Wash and can include isolating the step such as filter tank, air backwash, air and water mixing backwash and final rinsing.

According to this utility model, described accurate filter, also referred to as cartridge filter, are well known to those skilled in the art , for removing the suspended solid in sand leaching water.

According to this utility model, described membrance concentration defecator is well-known to those skilled in the art, can include Membrane material, described membrane material can be at least one in ultrafilter membrane, NF membrane and reverse osmosis membrane.

According to this utility model, the processing system of described salt-soda soil bitter can also include salt making apparatus；Described film is dense The concentrated water outlet of contracting defecator can be connected with the concentrated water entrance of described salt making apparatus, and/or described membrance concentration defecator Concentrated water outlet can connect with the fine straining water inlet of described membrance concentration defecator.Described salt making apparatus are people in the art Known to member, crystallizing pond etc. can be included.

According to this utility model, the processing system of salt-soda soil bitter can also include producing pond and blend pond；Described Produce pond to be provided with product pond less salt water inlet, produce pond less salt water out and produce pond brackish water outlet, described blend Pond can be provided with blends pond softening water inlet, blends pond less salt water inlet and blend pond brackish water outlet；Described Producing pond less salt water inlet can be with the low-solids water outlet of described membrance concentration defecator, described product pond less salt water out Can connect with described pond less salt water inlet of blending, described pond softening water inlet of blending can be with described softening depositing reservoir Softened water outlet.

The process of the salt-soda soil bitter using system of the present utility model is provided below according to system of the present utility model Method.This processing method includes：A, will bitter send into grid pond in adsorption treatment is carried out using straw straw screen or mat, adsorbed Water；Wherein, it is fixed with alumina layer in described straw straw screen or mat, the mass ratio of described straw straw screen or mat and alumina layer is 1：(0.1- 10)；B, by step a gained absorption water carry out soften clarifying treatment, obtain mud and softened water；C, will be soft for gained in step b Change water and carry out sand filtration process, obtain sand leaching water；D, gained sand leaching water in step c is carried out at secondary filter using accurate filter Reason, obtains fine straining water；E, gained fine straining water in step d is carried out membrance concentration filtration treatment, obtain concentrated water and low-solids water；Wherein, The Oil repellent of bitter described in step a is 1.0-4.0 mg/litre, and nitrogen content is 3-20 mg/litre, and phosphorus content is 0.1-3.5 Mg/litre, the Oil repellent that in step a, gained adsorbs water is 0.4-1.5 mg/litre, and nitrogen content is 0.2-4 mg/litre, phosphorus content For 0.02-0.6 mg/litre.

Described bitter refers to that basicity is more than hardness, and contains a large amount of neutral salt, the water that pH value is more than 7, and China is mainly distributed In the north and the coastal region in east China.Bitter can come from row's alkali water in a canal of gained after drip washing alkaline land soil, this row's alkali water in a canal In contain substantial amounts of pesticide and chemical fertilizer, nitrogen content and phosphorus content are high.

Straw straw screen or mat can be carried out to planktons such as the pollutant such as the Organic substance in bitter, nitrogen, phosphorus, silt and algae Preliminary interception, filtration, absorption, sedimentation, degraded, the straw in straw straw screen or mat can be selected from rice straw, potato class straw, Brassica campestris L At least one in straw, cotton stalk, Caulis Sacchari sinensis straw, corn straw, straw and reed straw.Aluminium oxide in straw straw screen or mat Layer can reduce the content of phosphorus, nitrogen and fluorine in bitter, reduces the processing load of subsequent film thickening filtration device, alumina layer The specific surface of middle aluminium oxide can be 50-300 rice²/ gram, pore volume can be 0.2-1.2 ml/g.Aoxidize in alumina layer The existence form of aluminum is not restricted, for example, can be the alumina globule of tight arrangement, those skilled in the art can basis Need to adjust the gap length of alumina layer.

In order to intercept larger suspended solid, reduce the treating capacity of straw straw screen or mat, the method can also include：? In step a, intercept process is carried out to the absorption water of gained after the bitter before described adsorption treatment and adsorption treatment using grid.

Described softening clarifying treatment refers to adsorb water and coagulant in softening depositing reservoir or high density softening depositing reservoir With after flocculation aid hybrid reaction remove water inlet in suspended solid, simultaneously feeding lime, sodium carbonate softened, remove temporarily hard Degree and part permanent hardness, are recycled after the sludge condensation of generation, described coagulant can be selected from aluminum sulfate, trichlorine Change at least one in ferrum, ferrous sulfate, magnesium carbonate, ferrous chloride, aluminium polychlorid and bodied ferric sulfate；Described flocculation aid can Think at least one in sulphuric acid, phosphoric acid, Calx, chlorine, polyacrylamide, activated silicic acid, osseocolla and sodium alginate.

Furthermore it is possible to gained mud at least part of step b being back to use in described softening clarifying treatment and/or being taken off The processing system of salt-soda soil bitter is sent after water.Soften depositing reservoir and pass through inside and outside sludge circulation, returned sludge and suction can be made Attached water forms " the muddy water floccule body " of high concentration again, makes that mud has very strong adsorption bridging and volume sweeps effect, wads a quilt with cotton abundant After solidifying, the larger molecular organicses in absorption water are adsorbed and precipitate.

In bitter after series of processing steps is processed, salinity reduces, for example, bitter described in step a Salinity can be 3-15 g/l, and suspension content can be 15-30 mg/litre；In step a, gained adsorbs the salinity of water Can be 2.9-14.8 g/l, suspension content can be 5-10 mg/litre；In step b, the salinity of gained softened water is permissible For 2.5-14 g/l；In step c, the salinity of gained sand leaching water can be 2.5-14 g/l；Gained fine straining water in step d Salinity can be 2.5-14 g/l；In step e, the salinity of gained concentrated water can be 5-42 g/l, the containing of gained low-solids water Salt amount can be 0.2-2 g/l；Wherein, the salt in described salinity includes all soluble inorganic salts in water.

In order to recycle concentrated water, gained concentrated water at least part of step e can be sent in salt making apparatus and carry out salt manufacturing Process and/or carry out membrance concentration filtration treatment described in step e.

After the softened water softening clarification carries out secondary filter process by accurate filter, can add organic The antisludging agents such as phosphonate, polycarboxylic acids and polyepoxy sodium succinate, carry out membrance concentration filtration treatment by membrance concentration defecator and enter Row desalination, the temperature of this filtration treatment can be at 5-45 DEG C about, and power can control at 0.3-2.2 MPa about.

In order to reduce usage quantity and the energy efficient of film, gained low-solids water in step e can be sent into and produce in pond；If The salinity of described low-solids water is less than 1.5 g/l, then can send into and blend pond and gained softened water at least part of step b Mixing, obtains the processing system that salt-soda soil bitter sent by the brackish water that salinity is 1.5-2 g/l；If described low-solids water Salinity is 1.5-2 g/l, then can send the processing system of salt-soda soil bitter directly as brackish water.

This utility model will be further illustrated by embodiment below, but this utility model will not therefore be taken office What limits.

Device, operating procedure and range of operating parameters that this utility model embodiment is used are as follows：

The bitter of the row's alkali canal from Xinjiang Alar City 11 is first sent into balancing tank, makes big in bitter Granule precipitates, and is then fed into carrying out intercept process through grid in grid pond, intercepts big floating thing and impurity in bitter, The salinity of bitter is made to be 3-15 g/l, Oil repellent is 1.0-4.0 mg/litre, nitrogen content is 3-20 mg/litre, phosphorus content For 0.1-3.5 mg/litre, float is 15-30 mg/litre.

Bitter through intercept process is carried out in the straw straw screen or mat of grid pond adsorption treatment, dispose in grid pond by The straw screen or mat of corn straw braiding, is provided with one layer of alumina layer, the specific surface of aluminium oxide is 50-300 rice in straw screen or mat²/ gram, hole body Amass as 0.2-1.2 ml/g, the mass ratio of straw straw screen or mat and alumina layer is 1：(0.1-10), in bitter and grid pond Straw screen or mat is fully contacted, and the planktons such as the pollutant such as the Organic substance in bitter, nitrogen, phosphorus, silt and algae are tentatively blocked Cut, filter, adsorb, settle, degrade, and bitter is also contacted with aluminium oxide, absorption wherein part nitrogen, phosphorus and fluorine etc., Obtain absorption water salinity be 2.9-14.8 g/l, Oil repellent be 0.4-1.5 mg/litre, nitrogen content be 0.2-4 milligram/ Rise, phosphorus content is 0.02-0.6 mg/litre, and suspension content can be 5-10 mg/litre.

Absorption water is sent in the coagulating basin of high density softening depositing reservoir and add PAC coagulant and Calx flocculation aid to mix Remove the float in water inlet after conjunction under the stirring of coagulation apparatus, be then fed into adding Calx, sodium carbonate to enter in softening pond Row softens, and removes temporary hardness and part permanent hardness, and the partial sludge of generation is recycled after concentrating, and another part leads to Cross sludge circulation inside and outside sludge refluxing apparatus, send into the flocculation tank that high density softens depositing reservoir, make returned sludge and absorption Water forms " the muddy water floccule body " of high concentration again, makes that mud has very strong adsorption bridging and volume sweeps effect, flocculates abundant Afterwards, the larger molecular organicses in absorption water are adsorbed and precipitate, the mud after adsorbing again sends into sloping plate deposition concentration basin Precipitated, control high density to soften softening clarifying treatment condition and coagulant, flocculation aid, Calx and the sodium carbonate of depositing reservoir Addition so that the salinity of softened water be 2.5-14 g/l.

The softened water feeding high rate activated sand filter of TGV is removed suspended particulate substance further, through the sand filtration of sand filtration gained The salinity of water is 2.5-14 g/l.

Sand leaching water is carried out secondary filter process by cartridge filter, obtaining salinity is 2.5-14 g/l of fine straining water. Add HEDP antisludging agent in fine straining water, membrance concentration filtration treatment desalination, membrance concentration are carried out by high performance membrane thickening filtration device Temperature 5-45 DEG C of filtration treatment, Stress control, at 0.3-2.2 MPa, obtains the low-solids water for 0.2-2 g/l for the salinity and contains Salt amount is 5-42 g/l of concentrated water.Less salt Aquatic product water enters and produces pond, and another part then contains the concentrated water of remaining salinity, This part moisture two-way, a road concentrated water carries out salt manufacturing process, and a road concentrated water is sent into high performance membrane concentration systems, continued cycling through process, Such technique can reduce usage quantity and the energy efficient of film.

Low-solids water is carried out with the detection of salt content, if salt content concentration is less than 1.5g/l, brackish water and softened water is existed Blend and in pond, blend mixing, final acquisition salt content is in the brackish water water outlet of 1.5-2g/l.

The plantation that product water brackish water is used for economical salt-tolerant plant on salt-soda soil is irrigated, and the salt tolerant of selected plantation is planted Thing is that the obvious salt-tolerant plant of survival rate economic benefit more than 85% is (sweet in the environment for 0.5-5g/l for the salinity concentration Grass, Herba Caraganae intermediae, jujube tree and Populus euphratica etc.).

Embodiment

Carry out bitter process according to the following condition of abovementioned steps：

It is provided with one layer of alumina layer, alumina layer is by the oxidation of metal grill fixed diameter 2 cm in straw screen or mat Aluminum bead, the specific surface of aluminium oxide is 151 meters²/ gram, pore volume is 0.45 ml/g, the quality of straw straw screen or mat and alumina layer Than for 1：7, the bitter that every gram of alumina layer averagely per second is processed is 1 kilogram.

The flow of inlet water of bitter is 27.8 meters³/ hour, pH value is 8.2, and electrical conductivity is 12.2 μ s/cm, and salinity is 8.17 g/l, the water flow of low-solids water is 19.8 meters³/ hour, pH value is 7.4, and electrical conductivity is 3.4 μ s/cm, low-solids water Salinity is 1.88 g/l.

Product water brackish water is used for Glycyrrhiza uralensis Fisch. plantation and irrigates, and Radix Glycyrrhizae growing way is vigorous, and survival rate more than 93%, imitate by economy Benefit is high, and substantially, the life-span of high performance membrane thickening filtration device film is 5 years to ecological benefits.

Comparative example

Comparative example is identical with the step of embodiment and condition, and difference is bitter without adsorption treatment, but Directly carry out softening clarifying treatment after intercept process.

The flow of inlet water of bitter is 27.8 meters³/ hour, pH value is 8.2, and electrical conductivity is 12.2 μ s/cm, and salinity is 8.17 g/l, the water flow of low-solids water is 16.3 meters³/ hour, pH value is 7.4, and electrical conductivity is 3.4 μ s/cm, low-solids water Salinity is 1.88 g/l, and the life-span of high performance membrane thickening filtration device film is 3 years.

Can be seen that at through the absorption of the straw straw screen or mat of this utility model system from the comparison of embodiment and comparative example Reason, the water flow of low-solids water improves, and salinity reduces, and reduces softening depositing reservoir, sand filter, accurate filter and film The treating capacity of thickening filtration device, improves the life-span of high performance membrane thickening filtration device film.

Claims (5)

1. the processing system of a kind of salt-soda soil bitter, this system includes：Balancing tank, grid pond, softening depositing reservoir, sand filtration Pond, accurate filter and membrance concentration defecator；

Described balancing tank is provided with water inlet and bitter outlet, and described grid pond is provided with straw straw screen or mat, bitter entrance With absorption water out, described softening depositing reservoir be provided with absorption water inlet, soften depositing reservoir sludge outlet and soften water out, institute State sand filter and be provided with sand filter softening water inlet and sand filtration water out, described accurate filter is provided with sand filtration water inlet and essence Filtered water outlet, described membrance concentration defecator is provided with fine straining water inlet, concentrated water outlet and less salt water out；Wherein, described straw It is fixed with alumina layer, the mass ratio of described straw straw screen or mat and alumina layer is 1 in stalk straw screen or mat：(0.1-10)；

The bitter outlet of described balancing tank connects with the bitter entrance of grid pond, and described grid pond adsorbs water out and soft Change the absorption water inlet connection of depositing reservoir, the described softening water out softening depositing reservoir softens water inlet with sand filter and connects, institute The sand filtration water inlet of the sand filtration water out and accurate filter of stating sand filter connects, the fine straining water out of described accurate filter and The fine straining water inlet connection of membrance concentration defecator.

2. the processing system of salt-soda soil according to claim 1 bitter, wherein, the ratio of aluminium oxide in described alumina layer Surface is 50-300 rice²/ gram, pore volume is 0.5-1.5 ml/g；

Straw in described straw straw screen or mat is selected from rice straw, potato class straw, rape stalk, cotton stalk, Caulis Sacchari sinensis straw, jade At least one in rice straw, straw and reed straw.

3. the processing system of salt-soda soil according to claim 1 bitter, wherein, described softening depositing reservoir is also included successively The coagulating basin of connection, softening pond, flocculation tank and sloping plate deposition concentration basin.

4. the processing system of salt-soda soil according to claim 1 bitter, wherein, described softening depositing reservoir also includes mud Storage pool, sludge dewatering equipment and sludge refluxing apparatus；

Described sewage sludge storage pond includes storage pool sludge inlet and storage pool sludge outlet, and described sludge dewatering equipment includes dewaterer Sludge inlet, dewatered sludge outlet and water out, described sludge refluxing apparatus are provided with returned sludge entrance and returned sludge goes out Mouthful, described softening depositing reservoir is additionally provided with softening depositing reservoir sludge inlet；

Described storage pool sludge inlet connects with softening depositing reservoir sludge outlet, described storage pool sludge outlet and dewaterer mud Entrance connects, and described returned sludge entrance connects with softening depositing reservoir sludge outlet, and described returned sludge outlet and softening are clarified Pond sludge inlet connection.

5. the processing system of salt-soda soil according to claim 1 bitter, wherein, the processing system of described salt-soda soil bitter System also includes salt making apparatus；The concentrated water outlet of described membrance concentration defecator is connected with the concentrated water entrance of described salt making apparatus, and/ Or the concentrated water outlet of described membrance concentration defecator is connected with the fine straining water inlet of described membrance concentration defecator；

The processing system of salt-soda soil bitter also includes producing pond and blends pond；Described product pond is provided with product pond low-solids water Entrance, produce pond less salt water out and produce the outlet of pond brackish water, described blend pond be provided with blend pond soften water inlet, Blend pond less salt water inlet and blend pond brackish water outlet；Described product pond less salt water inlet filters dress with described membrance concentration The low-solids water outlet put, described product pond less salt water out is connected with described pond less salt water inlet of blending, and described blends Pond softens water inlet and the described softened water outlet softening depositing reservoir.