CN204116323U - A kind of scale inhibition performance of reverse osmosis scale inhibitor dynamics evaluation apparatus - Google Patents
A kind of scale inhibition performance of reverse osmosis scale inhibitor dynamics evaluation apparatus Download PDFInfo
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- CN204116323U CN204116323U CN201420621693.1U CN201420621693U CN204116323U CN 204116323 U CN204116323 U CN 204116323U CN 201420621693 U CN201420621693 U CN 201420621693U CN 204116323 U CN204116323 U CN 204116323U
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Abstract
The utility model discloses a kind of scale inhibition performance of reverse osmosis scale inhibitor dynamics evaluation apparatus, it is characterized in that: the water intake end of outlet pipeline through ultrafiltration water pump access self-cleaning filter that raw water box is set, on the outlet pipeline of self-cleaning filter, from the water delivering orifice of self-cleaning filter, successively, be arranged in series ultra filtration membrane, ultrafiltration water tank, counter-infiltration low-lift pump, reverse osmosis cartridge filter, reverse osmosis high-pressure pump and reverse osmosis membrane; The product mouth of a river one tunnel of reverse osmosis membrane meets total refluxing opening A, and another road connects water collecting basin; Concentrated water spout one tunnel of reverse osmosis membrane is connected with total refluxing opening A, and another road connects water collecting basin; Total refluxing opening A connects ultrafiltration water tank and forms backflow.The utility model can determine that the maximum recovery under assessing terms specified by counter-infiltration system; The quality of antisludging agent not of the same race scale-inhibiting properties under identical operating conditions, and antisludging agent is to the scale prevention ability of one-tenth dirt material not of the same race.
Description
Technical field
The utility model relates to a kind of scale inhibition performance of reverse osmosis scale inhibitor dynamics evaluation apparatus.
Technical background
Current reverse osmosis (RO) technology is widely used in water treatment field due to outstanding advantages such as its energy consumption are low, operation is easy, system footprint area is little, performance driving economy is good, but the film scale problems of counter-infiltration system is a major issue affecting counter-infiltration system safe operation for a long time.The mode of adding antisludging agent is adopted to prevent from and control reverse osmosis membrane fouling playing an important role in counter-infiltration operational process.
The evaluation method of now widely used reverse osmosis antisludging agent mainly contains two classes, one class is static-state scale inhibition agent performance evaluation, comprises static scale inhibition method, ultimate carbonate hardness method, Bubbling method, nephelometry, electrochemical process, conductance method, glass electrode method, constant composition technology etc.; Another kind of is the evaluation of scale inhibitor method adopting specialized equipment, comprises scanning electron microscope, atomic force microscope, X-diffraction approach, domain size distribution instrument method etc.But existing method all cannot simulate the actual operating mode of counter-infiltration system, and Consideration is comparatively single, there is certain deviation with actual motion.
Utility model content
The utility model is the weak point for avoiding existing for above-mentioned prior art, a kind of scale inhibition performance of reverse osmosis scale inhibitor dynamics evaluation apparatus is provided, so that can determine counter-infiltration system specifying the maximum recovery under assessing terms, analyze the quality of different types of antisludging agent scale-inhibiting properties under identical operating conditions, and judge that antisludging agent becomes the scale prevention ability of dirty material for variety classes.
The utility model is that technical solution problem adopts following technical scheme:
The utility model scale inhibition performance of reverse osmosis scale inhibitor dynamics evaluation apparatus, its design feature is:
The water intake end of outlet pipeline through ultrafiltration water pump access self-cleaning filter of raw water box is set, on the outlet pipeline of described self-cleaning filter, from the water delivering orifice of described self-cleaning filter, successively, be arranged in series ultra filtration membrane, ultrafiltration water tank, counter-infiltration low-lift pump, reverse osmosis cartridge filter, reverse osmosis high-pressure pump and reverse osmosis membrane;
The inside of described ultrafiltration water tank is provided with constant liquis position control device, and top is provided with reverse osmosis antisludging agent dosing mouth;
The product mouth of a river one road multiparity water recirculatory pipe OA of described reverse osmosis membrane is connected with total refluxing opening A, and another road multiparity water drainpipe OB connects water collecting basin; Concentrated water spout one tunnel of described reverse osmosis membrane is connected with total refluxing opening A through concentrate recirculation pipe PA, and another Lu Jingnong drainpipe PD connects water collecting basin;
Described total refluxing opening A accesses the top of ultrafiltration water tank by total recirculatory pipe AE, and described total recirculatory pipe AE is respectively arranged with heat exchanger and total return flow meter.
The utility model scale inhibition performance of reverse osmosis scale inhibitor dynamics evaluation apparatus, its design feature is also:
Outlet pipeline between described raw water box with ultrafiltration water pump is provided with the germifuge volume pump be connected with germifuge batch meter;
The first tensimeter and first-class gauge is respectively arranged with in the inlet orifice of described ultra filtration membrane; The second tensimeter and second gauge is respectively arranged with at the effluent pipe mouth of described ultra filtration membrane;
Described counter-infiltration low pressure pump intake piping mouth is provided with the 3rd tensimeter, the outlet pipeline between described counter-infiltration low-lift pump and reverse osmosis cartridge filter is provided with SDI measuring point;
The water inlet pipe mouth of described reverse osmosis cartridge filter is provided with the 4th tensimeter, and the effluent pipe mouth of reverse osmosis cartridge filter is provided with the 5th tensimeter;
Inlet regulating valve is set at the water inlet of described reverse osmosis membrane, the inlet pipeline of described inlet regulating valve is respectively arranged with the 3rd flowmeter, the first conductivity table and the 6th tensimeter;
The product water recirculatory pipe OA of described reverse osmosis membrane arranged respectively and produces water return flow variable valve, produce current return flow meter and backflow product water conductivity; Arrange respectively in the product water discharge spout OB of described reverse osmosis membrane and produce water emission flow variable valve and produce water discharge stream gauge;
The concentrate recirculation pipe PA of described reverse osmosis membrane arranges concentrate recirculation flow control valve, concentrate recirculation flowmeter and concentrate recirculation tensimeter respectively; In the concentrated water discharge pipe PD of described reverse osmosis membrane, concentrated water discharge flow control valve and concentrated water discharge flowmeter are set respectively.
The feature utilizing the utility model scale inhibition performance of reverse osmosis scale inhibitor dynamics evaluation apparatus to carry out the method for scale inhibition performance of reverse osmosis scale inhibitor dynamic evaluation is: after certain reverse osmosis antisludging agent of interpolation, measure the limit recovery of counter-infiltration system; And the quality of scale inhibition performance of reverse osmosis scale inhibitor not of the same race under evaluating the specific recovery.
The feature of the method for the utility model scale inhibition performance of reverse osmosis scale inhibitor dynamic evaluation is also: described after certain reverse osmosis antisludging agent of interpolation, the limit recovery measuring counter-infiltration system is carried out as follows: periodic adjustment produces water emission flow variable valve, control the product water flow of discharging, make dense water through concentrate recirculation pipeline PA simultaneously, total return line AE is back in ultrafiltration water tank, kept the constant liquid level of ultrafiltration water tank by the constant liquis position control device in water tank simultaneously, the influent concentration of reverse osmosis membrane is improved constantly when reverse osmosis antisludging agent concentration is constant, increase the scaling tendency of counter-infiltration system, reach the object of the evaluation system limit recovery.
The feature of the method for the utility model scale inhibition performance of reverse osmosis scale inhibitor dynamic evaluation is also: under the specific recovery of described evaluation, the method for the quality of scale inhibition performance of reverse osmosis scale inhibitor not of the same race is: periodic adjustment produces water emission flow variable valve, control the product water flow of discharging, make dense water through concentrate recirculation pipeline PA simultaneously, total return line AE is back in ultrafiltration water tank, kept the constant liquid level of ultrafiltration water tank by the constant liquis position control device in water tank simultaneously, the influent concentration of reverse osmosis membrane is improved constantly when reverse osmosis antisludging agent concentration is constant, when influent concentration brings up to a certain particular value, close and produce water emission flow variable valve, now other all valve opening is constant in control, by the evaluation of scale inhibition performance of reverse osmosis scale inhibitor quality not of the same race under the length of film working time realizes the specific recovery under this kind of condition.
Compared with the prior art, the utility model beneficial effect is embodied in:
1, the utility model is all refluxed by the regularly quantitative discharge of counter-infiltration system product water and concentrate, the recovery of counter-infiltration system is improved constantly, thus judge under the condition of certain chemical feeding quantity, the limit recovery of system and reverse osmosis antisludging agent limit scaling condition.
2, the utility model can by improving the concentration of feed water by reverse osmosis ion and regulating counter-infiltration product water discharge capacity reach to make system reach the recovery of specifying, and run under the condition of the recovery of specifying, judge that the performance of reverse osmosis antisludging agent not of the same race under operating condition of the same race is good and bad by the length of working time.
3, the utility model by arranging heat exchanger, the water be used in cooling for reflux pipeline in total recirculatory pipe, and the running eliminated due to high-pressure pump makes system thermal increase thus water temperature is raised, and affects this difficult problem of the judgement of scaling tendency.
4, the utility model by arranging constant liquis position control device in ultrafiltration water tank, ensure that the water level in ultrafiltration water tank remains unchanged in the process of test, therefore the concentrate recirculation with medicament after ultrafiltration water tank all the time can drug concentration in keeping system constant, overcome and make the ever-increasing problem of drug concentration because water volume in water tank constantly reduces in continuous cyclic process, more identical with the situation of actual motion.
Accompanying drawing explanation
Fig. 1 is the utility model apparatus structure schematic diagram;
Number in the figure: 1 raw water box, 2 self-cleaning filters, 3 ultra filtration membranes, 4 ultrafiltration water tanks, 5 reverse osmosis cartridge filters, 6 reverse osmosis membranes, 7 ultrafiltration water pumps, 8 counter-infiltration low-lift pumps, 9 reverse osmosis high-pressure pumps, 10 heat exchangers, PA concentrate recirculation pipe, PD concentrated water discharge pipe, OA produces water recirculatory pipe, OB produces water discharge spout, the total recirculatory pipe of AE, 41 constant liquis position control devices, 42 reverse osmosis antisludging agent dosing mouths, 101 germifuge batch meters, 111 germifuge volume pumps, 133 concentrate recirculation flow control valves, 134 concentrated water discharge flow control valves, 135 produce water emission flow variable valve, and 136 produce water return flow variable valve, 141 first tensimeters, 142 second tensimeters, 143 the 3rd tensimeters, 144 the 4th tensimeters, 145 the 5th tensimeters, 146 the 6th tensimeters, 147 concentrate recirculation tensimeters, 151 first-class gauge, 152 second gauge, 153 the 3rd flowmeters, 154 concentrate recirculation flowmeters, 155 produce water return flow meter, 156 produce water discharge stream gauge, 157 total return flow meters, 158 concentrated water discharge flowmeters, 161 first conductivity tables, 162 produce water backflow conductivity table.
Embodiment
See Fig. 1, in the present embodiment, the version of scale inhibition performance of reverse osmosis scale inhibitor dynamics evaluation apparatus is:
The outlet pipeline arranging raw water box 1 accesses the water intake end of self-cleaning filter 2 through ultrafiltration water pump 7, on the outlet pipeline of described self-cleaning filter 2, from the water delivering orifice of described self-cleaning filter 2, successively, be arranged in series ultra filtration membrane 3, ultrafiltration water tank 4, counter-infiltration low-lift pump 8, reverse osmosis cartridge filter 5, reverse osmosis high-pressure pump 9 and reverse osmosis membrane 6;
The inside of described ultrafiltration water tank 4 is provided with constant liquis position control device 41, be used for ensureing that the liquid level of water tank remains unchanged thus intrasystem inhibitor concentration in experiment overall process is remained unchanged in the overall process of experiment, top is provided with reverse osmosis antisludging agent dosing mouth 42;
The product mouth of a river one road multiparity water recirculatory pipe OA of described reverse osmosis membrane 6 is connected with total refluxing opening A, and another road multiparity water drainpipe OB connects water collecting basin; Concentrated water spout one tunnel of described reverse osmosis membrane 6 is connected with total refluxing opening A through concentrate recirculation pipe PA, and another Lu Jingnong drainpipe PD connects water collecting basin;
Described total refluxing opening A accesses the top of ultrafiltration water tank 4 by total recirculatory pipe AE, and described total recirculatory pipe AE is respectively arranged with heat exchanger 10 and total return flow meter 157.
In concrete enforcement, corresponding setting also comprises:
Be provided with on the outlet pipeline between ultrafiltration water pump 7 the germifuge volume pump 111 be connected with germifuge batch meter 101 at described raw water box 1, in germifuge batch meter 101, certain germifuge is added in implementation process, and add in ultrafiltration inlet pipeline by germifuge volume pump 111, thus reach anti-bacteria and grow, prevent the effect of dirty stifled ultra filtration membrane;
The first tensimeter 141 and first-class gauge 151 is respectively arranged with in the inlet orifice of described ultra filtration membrane 3; The second tensimeter 142 and second gauge 152 is respectively arranged with at the effluent pipe mouth of described ultra filtration membrane 3;
The entrance mouth of pipe of described counter-infiltration low-lift pump 8 is provided with the 3rd tensimeter 143, the outlet pipeline between described counter-infiltration low-lift pump 8 and reverse osmosis cartridge filter 5 is provided with SDI measuring point;
The water inlet pipe mouth of described reverse osmosis cartridge filter 5 is provided with the 4th tensimeter 144, and the effluent pipe mouth of reverse osmosis cartridge filter 5 is provided with the 5th tensimeter 145;
Inlet regulating valve 131 is set at the water inlet of described reverse osmosis membrane 6, the inlet pipeline of described inlet regulating valve 131 is respectively arranged with the 3rd flowmeter 153, first conductivity table 161 and the 6th tensimeter 146;
The product water recirculatory pipe OA of described reverse osmosis membrane 6 arranged respectively and produces water return flow variable valve 136, produce current return flow meter 155 and backflow product water conductivity 162; Arrange respectively in the product water discharge spout OB of described reverse osmosis membrane 6 and produce water emission flow variable valve 135 and produce water discharge stream gauge 156, produce by regulating the product water that certain volume discharged by water emission flow variable valve 135, system intermediate ion concentration is increased;
The concentrate recirculation pipe PA of described reverse osmosis membrane 6 arranges concentrate recirculation flow control valve 133, concentrate recirculation flowmeter 154 and concentrate recirculation tensimeter 147 respectively; In the concentrated water discharge pipe PD of described reverse osmosis membrane 6, concentrated water discharge flow control valve 134 and concentrated water discharge flowmeter 158 are set respectively.
Water emission flow variable valve 135 is produced by periodic adjustment, control the product water flow of discharging, make dense water through concentrate recirculation pipeline PA simultaneously, total return line AE is back in ultrafiltration water tank 4, kept the constant liquid level of ultrafiltration water tank 4 by the fluid level control device in water tank 4 simultaneously, thus the influent concentration of reverse osmosis membrane 6 is improved constantly when reverse osmosis antisludging agent concentration is constant, increase the scaling tendency of counter-infiltration system; Reach the object of the evaluation system limit recovery.
The method utilizing scale inhibition performance of reverse osmosis scale inhibitor dynamics evaluation apparatus in the present embodiment to carry out scale inhibition performance of reverse osmosis scale inhibitor dynamic evaluation is: after certain reverse osmosis antisludging agent of interpolation, measure the limit recovery of counter-infiltration system; And the quality of scale inhibition performance of reverse osmosis scale inhibitor not of the same race under evaluating the specific recovery.
In the present embodiment, after certain reverse osmosis antisludging agent of interpolation, the limit recovery measuring counter-infiltration system is carried out as follows: periodic adjustment produces water emission flow variable valve 135, control the product water flow of discharging, make dense water be back in ultrafiltration water tank 4 through concentrate recirculation pipeline PA, total return line AE simultaneously, kept the constant liquid level of ultrafiltration water tank 4 by the constant liquis position control device 41 in water tank 4 simultaneously, improve constantly the influent concentration of reverse osmosis membrane 6 when reverse osmosis antisludging agent concentration is constant, increase the scaling tendency of counter-infiltration system; Reach the object of the evaluation system limit recovery.
In the present embodiment, under evaluating the specific recovery, the method for the quality of scale inhibition performance of reverse osmosis scale inhibitor not of the same race is: periodic adjustment produces water emission flow variable valve 135, control the product water flow of discharging, make dense water through concentrate recirculation pipeline PA simultaneously, total return line AE is back in ultrafiltration water tank 4, kept the constant liquid level of ultrafiltration water tank 4 by the constant liquis position control device 41 in water tank 4 simultaneously, the influent concentration of reverse osmosis membrane 6 is improved constantly when reverse osmosis antisludging agent concentration is constant, when influent concentration brings up to a certain particular value, close and produce water emission flow variable valve 135, now other all valve opening is constant in control, by the evaluation of scale inhibition performance of reverse osmosis scale inhibitor quality not of the same race under the length of film working time realizes the specific recovery under this kind of condition.
Experiment one: the limit recovery of counter-infiltration system after certain reverse osmosis antisludging agent of mensuration interpolation
Step 1: add a certain amount of scene and use water as test water in raw water box 1, open all water pumps, comprise ultrafiltration water pump 7, counter-infiltration low-lift pump 8 and reverse osmosis high-pressure pump 9, in ultrafiltration water tank 4, add a certain amount of reverse osmosis antisludging agent by reverse osmosis antisludging agent dosing mouth 42 simultaneously, close concentrated water discharge flow control valve 134 and produce water emission flow variable valve 135, make test water once through ultrafiltration water pump 7, self-cleaning filter 2, hyperfiltration membrane assembly 3, ultrafiltration water tank 4, counter-infiltration low-lift pump 8, reverse osmosis cartridge filter 5, reverse osmosis high-pressure pump 9, reverse osmosis membrane 6, concentrate recirculation pipe PC and product water recirculatory pipe OA, and heat interchanger 10 is back to ultrafiltration water tank 4, keep circulation 30 minutes.
Step 2: open and produce water discharging valve 135, the product water of withdrawal volume V, the constant operation of constant liquid level of the water tank of maintenance ultrafiltration simultaneously 41 hour, the Pressure Drop by reverse osmosis membrane 6 is recorded therebetween at interval of 20 minutes, and read the first conductivity table 161 respectively, produce water backflow conductivity table 162, 3rd flowmeter 153, produce water discharge stream gauge 156, produce water return flow meter 155, and the indicating value of concentrate recirculation flowmeter 154, incrustation ion concentration in Simultaneously test ultrafiltration water tank 4, each data of record and reading are utilized to be calculated to be the scaling index of dirty material respectively, film infiltration coefficient and system recoveries rate.
Step 3: repeat step 2, until the numerical value producing water backflow conductivity 162 starts bust, the pressure of reverse osmosis membrane 6 starts to raise, film infiltration coefficient declines, represent off-test, reverse osmosis membrane obviously shows scaling tendency, and the recovery is now the limit recovery of counter-infiltration system.
Experiment 2: under evaluating the specific recovery, scale inhibition performance of reverse osmosis scale inhibitor not of the same race is good and bad
Step one: with the step 1 of experiment 1, and measure the Cl testing water in original ultrafiltration water tank
-concentration C
0, open product water discharging valve 135 and discharge product water, keep the constant liquid level of ultrafiltration water tank 4 constant simultaneously, make dense water all be back to ultrafiltration water tank, measured Cl in dense water at interval of 10 minutes
-concentration C
1, work as C
0/ C
1when reaching setting value A, the recovery of system is (1-A) %, now closes and produces water discharging valve 135, makes product water and dense water together be back to ultrafiltration water tank 4, subsequently, the Pressure Drop by reverse osmosis membrane 6 is recorded at interval of 20 minutes, and read conductivity table 162 reading, conductivity table 161 reading, 3rd flowmeter 153, produce water discharge stream gauge 156, produce water return flow meter 155, the indicating value of concentrate recirculation flowmeter 154, incrustation ion concentration in Simultaneously test ultrafiltration water tank 4, the data obtained are utilized to be calculated to be the scaling index of dirty material, film infiltration coefficient also records working time, until conductivity table 162 numerical value starts bust, the Pressure Drop of reverse osmosis membrane 6 starts to raise, film infiltration coefficient starts bust, terminate test, the quality of the scale-inhibiting properties of reverse osmosis antisludging agent more not of the same race under recovery condition of the same race is carried out by the length of working time.
Claims (2)
1. a scale inhibition performance of reverse osmosis scale inhibitor dynamics evaluation apparatus, is characterized in that:
The water intake end of outlet pipeline through ultrafiltration water pump (7) access self-cleaning filter (2) of raw water box (1) is set, on the outlet pipeline of described self-cleaning filter (2), the water delivering orifice from described self-cleaning filter (2), successively, be arranged in series ultra filtration membrane (3), ultrafiltration water tank (4), counter-infiltration low-lift pump (8), reverse osmosis cartridge filter (5), reverse osmosis high-pressure pump (9) and reverse osmosis membrane (6);
The inside of described ultrafiltration water tank (4) is provided with constant liquis position control device (41), and top is provided with reverse osmosis antisludging agent dosing mouth (42);
The product mouth of a river one road multiparity water recirculatory pipe OA of described reverse osmosis membrane (6) is connected with total refluxing opening A, and another road multiparity water drainpipe OB connects water collecting basin; Concentrated water spout one tunnel of described reverse osmosis membrane (6) is connected with total refluxing opening A through concentrate recirculation pipe PA, and another Lu Jingnong drainpipe PD connects water collecting basin;
Described total refluxing opening A accesses the top of ultrafiltration water tank (4) by total recirculatory pipe AE, and described total recirculatory pipe AE is respectively arranged with heat exchanger (10) and total return flow meter (157).
2. scale inhibition performance of reverse osmosis scale inhibitor dynamics evaluation apparatus according to claim 1, is characterized in that:
Outlet pipeline between described raw water box (1) with ultrafiltration water pump (7) is provided with the germifuge volume pump (111) be connected with germifuge batch meter (101);
The first tensimeter (141) and first-class gauge (151) is respectively arranged with in the inlet orifice of described ultra filtration membrane (3); The second tensimeter (142) and second gauge (152) is respectively arranged with at the effluent pipe mouth of described ultra filtration membrane (3);
The entrance mouth of pipe of described counter-infiltration low-lift pump (8) is provided with the 3rd tensimeter (143), the outlet pipeline between described counter-infiltration low-lift pump (8) and reverse osmosis cartridge filter (5) is provided with SDI measuring point;
The water inlet pipe mouth of described reverse osmosis cartridge filter (5) is provided with the 4th tensimeter (144), and the effluent pipe mouth of reverse osmosis cartridge filter (5) is provided with the 5th tensimeter (145);
Inlet regulating valve (131) is set at the water inlet of described reverse osmosis membrane (6), the inlet pipeline of described inlet regulating valve (131) is respectively arranged with the 3rd flowmeter (153), the first conductivity table (161) and the 6th tensimeter (146);
The product water recirculatory pipe OA of described reverse osmosis membrane (6) arranged respectively and produces water return flow variable valve (136), produce current return flow meter (155) and backflow product water conductivity (162); Arrange respectively in the product water discharge spout OB of described reverse osmosis membrane (6) and produce water emission flow variable valve (135) and produce water discharge stream gauge (156);
The concentrate recirculation pipe PA of described reverse osmosis membrane (6) arranges concentrate recirculation flow control valve (133), concentrate recirculation flowmeter (154) and concentrate recirculation tensimeter (147) respectively; Concentrated water discharge flow control valve (134) and concentrated water discharge flowmeter (158) are set respectively in the concentrated water discharge pipe PD of described reverse osmosis membrane (6).
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316653A (en) * | 2014-10-24 | 2015-01-28 | 安徽新力电业科技咨询有限责任公司 | Dynamic evaluation device and method for scale inhibition performances of reverse osmosis scale inhibitors |
| CN106746033A (en) * | 2017-02-28 | 2017-05-31 | 苏州华辰净化股份有限公司 | A kind of handling process of the shale gas exploitation waste water based on membrane technology |
| CN110194536A (en) * | 2019-06-16 | 2019-09-03 | 江苏富淼科技股份有限公司 | A kind of reverse osmosis scale inhibition dynamic evaluation instrument and its appraisal procedure |
-
2014
- 2014-10-24 CN CN201420621693.1U patent/CN204116323U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316653A (en) * | 2014-10-24 | 2015-01-28 | 安徽新力电业科技咨询有限责任公司 | Dynamic evaluation device and method for scale inhibition performances of reverse osmosis scale inhibitors |
| CN106746033A (en) * | 2017-02-28 | 2017-05-31 | 苏州华辰净化股份有限公司 | A kind of handling process of the shale gas exploitation waste water based on membrane technology |
| CN110194536A (en) * | 2019-06-16 | 2019-09-03 | 江苏富淼科技股份有限公司 | A kind of reverse osmosis scale inhibition dynamic evaluation instrument and its appraisal procedure |
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