CN207375839U - A kind of system of high-salt wastewater treatment for reuse - Google Patents

Abstract

The utility model is related to sewage treatment field, more particularly, to a kind of system of high-salt wastewater treatment for reuse.The system comprises regulating reservoir, the clear water reserviors that connect the sedimentation basin of the regulating reservoir, connect the sedimentation basin, the ultrafiltration apparatus for connecting the self-cleaning filter of the clear water reserviors, connecting the self-cleaning filter, connect the reverse osmosis unit of the ultrafiltration apparatus and connect the reuse pool of the reverse osmosis unit；It is connected between the self-cleaning filter and the ultrafiltration apparatus by connecting tube, first electric valve is installed in the connecting tube, salinity sensor is installed in the self-cleaning filter, it is connected between the self-cleaning filter and the regulating reservoir by the first liquid back pipe, the second electric valve is installed on first liquid back pipe；The salinity sensor, the first electric valve are electrically connected with the equal and described central processing unit of the second electric valve.The system of the high-salt wastewater treatment for reuse can solve the technical problems such as low, the damage equipment of purifying rate in current waste water recycling device.

Description

A kind of system of high-salt wastewater treatment for reuse

Technical field

The utility model is related to wastewater recycling system and methods more particularly to a kind of high-salt wastewater to recycle system System, belongs to sewage treatment field.

Background technology

With industrial progress and social development, water pollution is also on the rise.The seriously polluted influence people's lives of water, harm Human health.In order to enable the water quality requirement that sewage reaches drainage requirement or reuses, must carry out the dirty water decontamination handles.Separately Outside, the preciousness and shortage of water resource, but also reuse also becomes inevitable after sewage disposal, and demand is increasing, particularly To the area that those freshwater resources lack, such as island, desert.Sewage disposal is widely used in building, agricultural, traffic, energy The every field such as source, petrochemical industry, medical treatment, food and drink.Presently, there are the lower methods of a variety of sewage disposals：Sand filtration method contains big to removal The Effects of Water Quality of grain pollutant is preferable, but pollutant is easily enriched with blocking filtrate, and backwash water return system pollute object load by Step increases.There are many method of advanced oxidation processes, such as：Wet oxidation, strong oxidizer oxidation, ozone oxidation etc., energy consumption is higher, and The application of different water bodys above has significant limitations.Ion-exchange is by capacity limit, and construction and operating cost are high, and resin regeneration It is cumbersome.The cost of distillation and concentration is also relatively high, and economy, the dewatering microporous film of high quality not yet research and develop maturation at present.

Containing higher soluble solid substance in high total dissolved solid substance (TDS) waste water, 4000mg/ is greater than L, 4500mg/L, 5000mg/L etc..High total dissolved solid substance, which generally also reflects, contains higher salinity in the waste water, Therefore also document is known as high-salt wastewater.High-salt wastewater can cause instrument in processing procedure a degree of damage, and high Salt waste water is difficult to handle due to high salt content, particularly for recycling, so to treatment method for high-salinity wastewater Demand increasingly increases.

Utility model content

In view of problem present in background technology, the purpose of this utility model is to provide a kind of high-salt wastewater treatment for reuse System, the technical problems such as purifying rate in current waste water recycling device is low can be solved.

In order to achieve the above object, the utility model provides a kind of system of high-salt wastewater treatment for reuse, the system bag Regulating reservoir is included, the sedimentation basin of the regulating reservoir is connected, connects the clear water reserviors of the sedimentation basin, connects the self-cleaning filtering of the clear water reserviors Device, the ultrafiltration apparatus for connecting the self-cleaning filter, the reverse osmosis unit for connecting the ultrafiltration apparatus and connect the reverse osmosis unit Reuse pool；It is connected between the self-cleaning filter and the ultrafiltration apparatus by connecting tube, is installed in the connecting tube One electric valve is equipped with salinity sensor in the self-cleaning filter, between the self-cleaning filter and the regulating reservoir It is connected by the first liquid back pipe, the second electric valve is installed on first liquid back pipe；The salinity sensor, the first electric valve with Second electric valve is electrically connected with the central processing unit.

Further, the first electrodynamic pump is installed on the inlet tube being connected with the regulating reservoir.

Further, connected between the ultrafiltration apparatus and the regulating reservoir by the second liquid back pipe, second liquid back pipe On the second electrodynamic pump is installed.

Further, the first check (non-return) valve is installed on first liquid back pipe.

Further, the second check (non-return) valve is installed on second liquid back pipe.

Further, the central processing unit is chip.

Further, first electric valve and second electric valve are in solenoid valve, ball valve, butterfly valve and pneumatic operated valve One kind.

Further, it in JSY-AC-JT, LJST or YS-ZC-50D/ss of the model of the self-cleaning filter One.

Further, the model 1-100T/H or XYC-8T/H of the ultrafiltration apparatus.

Further, first electric valve and the second electric valve are solenoid valve.

A kind of system of high-salt wastewater treatment for reuse provided by the utility model has following progress compared with prior art：

Salinity sensor is installed in the self-cleaning filter, is measured using salinity sensor in self-cleaning filter Salinity returns in regulating reservoir when salinity is more than setting value, can so improve the filter effect to high-salt wastewater, while can avoid The excessive destruction to next stage ultrafiltration apparatus of salinity；

First check (non-return) valve is installed, and it is non-return on second liquid back pipe to be equipped with second on first liquid back pipe Valve, the installation of the first check (non-return) valve and the second check (non-return) valve can prevent liquid from flowing backwards；

It precipitated, filtered using fairly simple medicament (lime, coagulant and flocculant) in pretreatment system, effectively Carbonate hardness, removal partial organic substances and colloid are reduced, mitigates the load of follow-up film processing system, protection film processing system is just Often operation；

Ultrafiltration membrance filter system uses pretreatment of the ultra-filtration filters (UF) as reverse osmosis deaslination (RO) system.Ultra-filtration filters Can shut off the biomasses such as colloid, larger molecular organics, bacterial virus and suspended particle, and the turbidity for crossing water after filter is less than 0.2NTU, pollution index SDI are less than 3, the rate of recovery >=90%；

The counter-infiltration system water rate of recovery is more than 70% in reverse osmosis desalinization system, is taken off in salt rejection rate >=98%, 3 year in 1 year Salt rate >=97%.The two-stage reverse osmosis system water rate of recovery is more than 80%, and salt rejection rate in salt rejection rate >=97%, 3 year in 1 year >= 96%.90% or so can also be reached to the removal rate of dissolubility COD in water；

Pollutant in self-cleaning filter sewerage, hyperfiltration reverse-rinsing water is mainly SS, COD, using the place of coagulating sedimentation Science and engineering skill treated sewage and backwash draining reach the discharge standard of waste water.It invests that small, operating cost is low, can effectively control The water producing cost of recycle-water.

Description of the drawings

It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution of the prior art Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it describes below In attached drawing be the utility model some embodiments, for those of ordinary skill in the art, do not paying creativeness On the premise of work, other attached drawings are can also be obtained according to these attached drawings.

Fig. 1 is the structure diagram of the utility model；

Fig. 2 is that the electric appliance of the utility model connects block diagram.

Specific embodiment

The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described Embodiment is the utility model part of the embodiment, instead of all the embodiments.Based on the embodiment in the utility model, sheet Field those of ordinary skill all other embodiments obtained without making creative work, belong to this practicality Novel protected scope.

, it is necessary to explanation in the description of the utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular Directly ", the orientation of the instructions such as " level ", " interior ", " outer " or position relationship are based on orientation shown in the drawings or position relationship, are only The utility model must have specific with the device or element for simplifying description rather than instruction or hint meaning for ease of description Orientation, with specific azimuth configuration and operation, therefore it is not intended that limitation to the utility model.In addition, term " the One ", " second ", " the 3rd " are only used for description purpose, and it is not intended that instruction or hint relative importance.

, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in the description of the utility model Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integrally Connection；Can be mechanical connection or electrical connection；It can be directly connected, can also be indirectly connected by intermediary, It can be the connection inside two elements.For the ordinary skill in the art, can above-mentioned art be understood with concrete condition Concrete meaning of the language in the utility model.

As shown in Figure 1, it the system comprises regulating reservoir 1, connects the sedimentation basin 2 of the regulating reservoir 1, connect the sedimentation basin 2 Clear water reserviors 3, the self-cleaning filter 4 for connecting the clear water reserviors 3, the ultrafiltration apparatus 5 for connecting the self-cleaning filter 4, to connect this super Filter the reverse osmosis unit 6 of device 5 and the reuse pool 7 for connecting the reverse osmosis unit 6；The self-cleaning filter and the ultrafiltration It is connected between device by connecting tube 22, the first electric valve 402 in the connecting tube is installed, is equipped in the self-cleaning filter Salinity sensor 401 is connected between the self-cleaning filter and the regulating reservoir by the first liquid back pipe 33, the first time liquid Second electric valve 403 is installed on pipe；The salinity sensor, the first electric valve and the equal and described central processing of the second electric valve Device is electrically connected.

The salinity sensor is used to measure the salinity of treated sewage, and salt angle value is sent to central processing Device；Central processing unit by the signal received compared with preset value 1000mg/L, when more than preset value 1000mg/L, centre Reason device sends the signal of Open valve to the second electric valve, and concentrated water is discharged into regulating reservoir and carries out circular treatment；When less than default During value 1000mg/L, central processing unit sends the signal of Open valve to the first electric valve, and production water is discharged into ultrafiltration apparatus continues Processing.Salinity sensor is installed in the self-cleaning filter, the salt in self-cleaning filter is measured using salinity sensor Degree returns in regulating reservoir when salinity is more than setting value, can so improve the filter effect to high-salt wastewater, while can avoid salt Spend the destruction greatly to next stage ultrafiltration apparatus.

First check (non-return) valve 404 is installed on first liquid back pipe.

First electrodynamic pump 101 is installed on the inlet tube 11 being connected with the regulating reservoir.

It is connected by the second liquid back pipe 44 between the ultrafiltration apparatus and the regulating reservoir, is equipped on second liquid back pipe Second electrodynamic pump 501.Second check (non-return) valve 502 is installed on second liquid back pipe.Second liquid back pipe is used for concentrate Or it is discharged into regulating reservoir for cleaning the backwash liquor of ultrafiltration apparatus and carries out circular treatment.

The purpose of setting of first check (non-return) valve and second check (non-return) valve is to prevent solution from flowing backwards.

Liquid in the inlet tube, the first liquid back pipe, the second liquid back pipe is flowed along the arrow direction in Fig. 1.

Regulating reservoir：Regulating reservoir can be sufficiently mixed water quality, balanced water quality and avoid precipitating, and be conducive to subsequent handling.

Sedimentation basin：Waste water is not before coagulant and flocculant is added, itself matter of colloid and tiny suspended particulate in water Amount is very light, and random Brownian movement is done by the collision of the molecular thermalmotion of water.Particle is all with same sex charge, between them Electrostatic repulsion prevent it is closer to each other and aggregate into larger particle between particle；And coagulant and flocculant are sequentially added in water Afterwards, charge neutrality occurs with the colloid of suspended matter and discrete particles, forms wadding grain sedimentation, and they collide with each other in infall process Cohesion, size and quality constantly become larger, and settling velocity is continuously increased.Floccule body has powerful adsorption capacity, can not only adsorb suspended matter, It can also absorbed portion bacterium and dissolved matter.Select the appropriate coagulant, such as the coagulant can be as needed Aluminum sulfate, aluminium polychloride, poly-ferric chloride, ferrous sulfate, alum (alum), sodium aluminate or ferric sulfate；Flocculant is Polyacrylic acid, Sodium Polyacrylate, calcium polyacrylate (CPA) or polyacrylamide；Preferably, the coagulant for PB1 gene or Poly-ferric chloride, the flocculant are polyacrylamide PAM.Lime can make the calcium and magnesium plasma deposition in water, effectively reduce carbon Hydrochlorate hardness.The concentration of lime is 150-200mg/L, the concentration of coagulant is 15-20mg/L, the concentration of flocculant is 0.5- 1mg/L。

Clear water reserviors：For the upper strata clear water generated in settlement on storage pond, and acid adding adjusts pH, and the acid is hydrochloric acid or sulphur Acid.

Self-cleaning filter intercepts solid impurity and particulate matter in water using strainer, so as to reduce the turbidity of water, improves The filter-specific equipment of water quality.Water is to enter filter interior by water inlet, and the strainer in machine blocks the impurity in water It cuts；It, which has the function of to be filtered water and have, automatically carries out filter core cleaning blowdown.The mistake of the self-cleaning filter It is 80 μm, 100 μm, 120 μm, 150 μm or 200 μm to filter size, can select appropriate filter sizes, such as 150 μm.By certainly Water after cleaning filter filtering enters ultrafiltration apparatus, and the anti-sewage cleaned, which is discharged into regulating reservoir, carries out circular treatment.

Ultrafiltration is using pressure as motive force, for the purpose of macromolecular and separation of small molecuies.In ultra-filtration process, aqueous solution exists Under pressure promotes, film surface is flowed through, less than the solvent (water) of fenestra and small molecule solute water permeable membrane, becomes scavenging solution, compares fenestra Big solute and solute group is trapped, and is discharged with current, is become concentrate.Ultra-filtration process is dynamic filtration, and separation is to flow It is completed under dynamic state.In the utility model, the ultrafiltration production water generated through ultrafiltration apparatus enters reverse osmosis unit, concentrate or The backwash liquor that person is used to clean ultrafiltration apparatus is discharged into regulating reservoir and carries out circular treatment.

Reverse osmosis also known as reverse osmosis, one kind isolate the UF membrane operation of solvent using pressure differential as motive force from solution. Pressure is applied to the feed liquid of film one side, when pressure is more than its osmotic pressure, solvent can be made reversed against the direction of naturally osmotic Infiltration.So as to the solvent penetrated in the low-pressure side of film, i.e. penetrating fluid；The solution that high-pressure side is concentrated, i.e. concentrate.If With reverse-osmosis treated seawater, fresh water is obtained in the low-pressure side of film, bittern is obtained in high-pressure side.

Reverse osmosis unit：Such as reverse osmosis unit can be selected as needed；Such as described device can be 5 μm of security personnel Filter.Cartridge filter belongs to accurate filter, and operation principle is to carry out mechanical filter using the hole of 5 μm of PP filter cores. Remaining trace suspension particle, colloid, microorganism etc., are trapped or adsorb in cartridge surface and hole in water.Security personnel's filtering The major advantage of device is efficient, resistance is small, is conveniently replaceable.Cartridge filter is generally less than 10 μm using aperture, according to reality Situation may be designed as 5 μm or lower.The concentrated water generated after reverse osmosis unit filters enters activated carbon reaction settling basin.According to It needs to select appropriate reducing agent and antisludging agent, the reducing agent can be sodium pyrosulfite, sodium hydrogensulfite, the antisludging agent Can be calgon, sodium tripolyphosphate.It needs periodically to add in fungicide in reverse osmosis unit, specially once a week, The time is added as 2h or so, the fungicide can be bis- bromo- 3- amino propionamides (DBNPA) of 2-2-, isothiazolinone.Also The concentration of former agent is 3-5mg/L, the concentration of antisludging agent is 3-5mg/L, the concentration of fungicide is 80-100mg/L.

Reuse pool：Sewage is recycled after serial of methods is handled, specially after reverse-osmosis treated Production water enters reuse pool.

The course of work of the utility model：

It opens the first electrodynamic pump 101, closes the first electric valve 402, the second electric valve 403, sewage with high salinity is along inlet tube 11 enter regulating reservoir 1, and following sewage sequentially enters sedimentation basin 2, clear water reserviors 3, self-cleaning filter 4 along connecting tube 22；By Salinity sensor 401 in self-cleaning filter 4, when less than preset value 1000mg/L, opening the first electric valve 402, next Successively by ultrafiltration apparatus 5, reverse osmosis unit 6, reuse pool 7；When more than preset value 1000mg/L, the second electric valve of unlatching 403 and first check (non-return) valve 404, regulating reservoir 1 is returned to along the first liquid back pipe 33, successively by sedimentation basin 2, clear water reserviors 3, self-cleaning Filter 4, again by the test of the salinity sensor 401 in self-cleaning filter 4, until being closed after being less than preset value 1000mg/L Close the second electric valve 403；Open the second electrodynamic pump 501, open the second check (non-return) valve 502, concentrate or for clean ultrafiltration dress The backwash liquor put, which is discharged into regulating reservoir, carries out circular treatment.

The ultrafiltration apparatus of the utility model can be used Shijiazhuang Fei Yue 1-100T/H models ultrafiltration apparatus, can be with Select the ultrafiltration apparatus of the sincere ring XYC-8T/H models of Guangzhou good faith；This time listed by energy be only the selectable brand of ultrafiltration apparatus and Model is not defined its brand or model, those skilled in the art can select according to actual needs other brands or The ultrafiltration apparatus of model, no longer excessively repeats herein.

The self-cleaning filtering of the positive brand JSY-AC-JT models of gold three can be used in self-cleaning filter in the utility model Device is also an option that Hangzhou is encouraged into the YS-ZC-50D/ss models of the self-cleaning filter or Changzhou spilling water of LJST models from clearly Wash filter；Listed by energy be only this time the selectable brand of self-cleaning filter and model, not to its brand or model into Row limits, and those skilled in the art can select the self-cleaning filter of other brands or model according to actual needs, herein not It is repeated after more.

The solenoid valve that the first electric valve and the second electric valve in the utility model use is the prosperous fluid brand in river CXQ641F type solenoid valves, certainly it is also an option that the electric control valve of extensive and profound in meaning brand, solenoid valve or electric adjustable listed by this energy It is only the selectable brand of above each solenoid valve and model to save valve, its brand or model is not defined, art technology Personnel can select the solenoid valve of other brands or model according to actual needs, no longer excessively repeat herein.

The salinity sensor of the utility model is the salinity sensor of the CB-SAL-BTA types of Beijing westernization instrument brand, certainly Can be with the sensor of Shanghai river phoenix brand, this time the salinity sensor listed by energy is only that above each salinity sensor is selectable Brand and model are not defined its brand or model, and those skilled in the art can select other according to actual needs The salinity sensor of brand or model, no longer excessively repeats herein.

Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model rather than it is limited System；Although the utility model is described in detail with reference to foregoing embodiments, those of ordinary skill in the art should Understand：It can still modify to the technical solution recorded in foregoing embodiments either to which part or whole Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is not made to depart from this practicality newly The scope of each embodiment technical solution of type.

Claims (10)

1. a kind of system of high-salt wastewater treatment for reuse, which is characterized in that including regulating reservoir, connect the regulating reservoir sedimentation basin, The clear water reserviors that connect the sedimentation basin, the self-cleaning filter for connecting the clear water reserviors, the ultrafiltration apparatus for connecting the self-cleaning filter, It connects the reverse osmosis unit of the ultrafiltration apparatus and connects the reuse pool of the reverse osmosis unit；The self-cleaning filter with it is described It is connected between ultrafiltration apparatus by connecting tube, the first electric valve in the connecting tube is installed, is equipped in the self-cleaning filter Salinity sensor is connected between the self-cleaning filter and the regulating reservoir by the first liquid back pipe, on first liquid back pipe Second electric valve is installed；The salinity sensor, the first electric valve are electrically connected with the second electric valve with central processing unit.

2. the system of high-salt wastewater treatment for reuse according to claim 1, which is characterized in that be connected with the regulating reservoir First electrodynamic pump is installed on inlet tube.

3. the system of high-salt wastewater treatment for reuse according to claim 2, which is characterized in that the ultrafiltration apparatus with it is described It is connected between regulating reservoir by the second liquid back pipe, the second electrodynamic pump is installed on second liquid back pipe.

4. the system of high-salt wastewater treatment for reuse according to claim 3, which is characterized in that pacify on first liquid back pipe Equipped with the first check (non-return) valve.

5. the system of high-salt wastewater treatment for reuse according to claim 3, which is characterized in that pacify on second liquid back pipe Equipped with the second check (non-return) valve.

6. the system of high-salt wastewater treatment for reuse according to claim 1, which is characterized in that the central processing unit is core Piece.

7. the system of high-salt wastewater treatment for reuse according to claim 6, which is characterized in that first electric valve and institute State the one kind of the second electric valve in solenoid valve, ball valve, butterfly valve and pneumatic operated valve.

8. the system of high-salt wastewater treatment for reuse according to claim 6, which is characterized in that the self-cleaning filter Model in JSY-AC-JT, LJST or YS-ZC-50D/ss one of.

9. the system of high-salt wastewater treatment for reuse according to claim 6, which is characterized in that

The model 1-100T/H or XYC-8T/H of the ultrafiltration apparatus.

10. the system of high-salt wastewater treatment for reuse according to claim 6, which is characterized in that

First electric valve and the second electric valve are solenoid valve.