CN101531408A - Recovery and utilization of molybdenum waste water - Google Patents
Recovery and utilization of molybdenum waste water Download PDFInfo
- Publication number
- CN101531408A CN101531408A CN200810034522A CN200810034522A CN101531408A CN 101531408 A CN101531408 A CN 101531408A CN 200810034522 A CN200810034522 A CN 200810034522A CN 200810034522 A CN200810034522 A CN 200810034522A CN 101531408 A CN101531408 A CN 101531408A
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- membrane
- reverse osmosis
- molybdenum
- filter
- nanofiltration
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Abstract
The invention relates to recovery and utilization of molybdenum waste water. In the invention, a nanofiltration membrane and a reverse osmosis membrane are used for recovering molybdenum, and membrane separation technique is used as a new separation, purification and concentration method. And compared with traditional separation operation (such as evaporation, extraction, precipitation, coagulation, ion exchange resin and the like), the membrane separation technique can be operated at normal temperature and is characterized by low energy consumption, high efficiency, simple technology, little investment, etc. When the membrane separation technique is applied to the sewage disposal field, a new sewage disposal method is formed. In the proposal, the nanofiltration membrane and the reverse osmosis membrane are used for recovering molybdenum. The system consists of a nanofiltration and reverse osmosis filtration system which includes a delivery pump, a safe filter, a booster pump, a sand filter, an active carbon filter, a membrane module, a heat exchange system, a CIP cleaning system, a component framework, a piping system, a component inlet and outlet control valve, a component inlet and outlet pressure gauge, a dialyzate collecting transparent hose and a dialyzate collecting aggregate pipeline; and an electric and automatic control system which comprises an on-site data collecting system and a PLC control system.
Description
Technical field
The present invention relates to a kind of waste water treatment process, refer more particularly to the technology that membrane technique reclaims molybdenum waste water and utilization.
Background technology
Industrial soft water contains little dense salt precipitation knot Hou, metal oxide pollution, colloid pollution and microbial contamination etc. at present.The main task that soft water is handled is the recovery and the desalination of molybdenum.The employing nanofiltration is reclaimed, the technology of reverse osmosis system pure water, the water inlet of nanofiltration and reverse osmosis requires than higher, must be through relatively stricter pre-treatment to eliminate the effects of the act and the various factors (these factors comprise little dense salt precipitation knot Hou, metal oxide pollution, colloid pollution and microbial contamination etc.) of polluted membrane.
Summary of the invention
The invention discloses a kind of recovery of molybdenum waste water and utilize technology and device, compare with traditional lock out operation (as evaporation, extraction, precipitation, coagulation and ion exchange resin etc.), most no phase change in the process, can operate at normal temperatures, have characteristics such as energy consumption is low, efficient is high, technology is simple, investment is little.Application of membrane separation technology has formed new sewage water treatment method to sewage treatment area, but in this scheme, has used sodium filter membrane and reverse osmosis membrane to reclaim molybdenum.
Service temperature: 0-35 ℃, safety temperature scope:＜40 ℃;
Working pressure: 0-25BAR, safe working pressure≤41.4BAR
Feed liquid PH:2-3, safe PH scope: 2-11.5
System forms: nanofiltration filtration and reverse osmosis filtration system comprise that dehvery pump, security personnel's strainer, topping-up pump, sand filter, activated charcoal filter, membrane module, heat exchange system, CIP cleaning system, component framework, piping system, assembly import and export control valve, assembly inlet and outlet pressure table, dialyzate are collected transparent hose, dialyzate is collected and gathered pipeline; Electric and automatic control system: comprise on-site data gathering system, PLC Controlling System.
Main technologic parameters is described below:
1. one-level nanofiltration basic design parameter
Design water production rate: 5m
3/ h; Design membrane area: 240m
2The system design working hour: 20 hours
The system design scavenging period: each 45-60 minute, add turnover time of liftout, switching, plan is 2 hours.
Every batch processed finishes the back cleans once, also looks the situation of the situation of waste water solution and production technique and changes.
2. reverse osmosis is crossed nanofiltration and is seen through liquid concentration process basic design parameter
Design water production rate: 5m
3/ h
Use membrane area: 240m
2
The system design working hour: 20 hours
The system design scavenging period:
Each 45-60 minute, add turnover time of liftout, switching, plan is 2 hours.Every batch processed finishes the back cleans once, also looks the situation of the situation of solution and production technique and this change.
3. main operating parameters:
Service temperature: 0-35 ℃, safety temperature scope:＜40 ℃;
Working pressure: 0-25BAR, safe working pressure≤41.4BAR
Feed liquid PH:2-3, safe PH scope: 2-11.5
4. system forms description
1, nanofiltration filtering system
The nanofiltration system of this Project design is the membrane module system of 1 station symbol pseudotype, and component system is the core of film system, and system comprises:
(1) dehvery pump
Be used for feed liquid in circulation tank extraction and security personnel's strainer through being pumped into piping system.
(2) security personnel's strainer
Be used for the safety filtering of feed liquid before entering the nanofiltration filter membrane, the purpose that this strainer is set is to hold back owing to pipeline cleans the foreign matter that the impurity that carries in not thorough or mishandle and the feed liquid enters circulation batch can or CIP jar.
(3) topping-up pump
Topping-up pump adopts stainless steel hygiene-type pump, and pump is sent in the membrane module by the feed liquid of carrying on the transfer line is further pressurizeed, thereby forms required flow velocity and the filter pressure of membrane filtration.The design discharge of pump and operating pressure are advanced film flow and film service pressure type selecting according to feed liquid
(4) sand-bed filter
This strainer be utilize quartz sand by the filtering layer adapted of certain gradation composition to remove suspended substance, mud, colloid in the tap water.Be aided with the preceding medicine system of strainer simultaneously, make most suspended substance and elimination of colloid stability in the water, flocculate into floss and utilize the quartz sand filtering layer to hold back and remove by the dosing throwing out.
Characteristics:
(5) activated charcoal filter.
This strainer is mainly removed organism, germ and the absorption chlorine residue in the water.Because gac has great specific surface area, produces very strong adsorptive power, bacterium, microorganism, organism and chlorine residue in can planar water reach the water inlet index request of reverse osmosis, protect the reverse osmosis membrane of back.The making of this strainer is with the quartz sand filtration device, and the selection of gac meets the requirement of GB/T13803.2-1999 first grade.
(6) membrane module
Comprise film pipe, film, stationary installation and sealing-ring, the effective filtration area of film system device is designed to 240m2.
(7) heat exchange system
System has been equipped with stainless steel shell and tube heat exchange system in the membrane module system.
(8) CIP cleaning system
Comprise stainless steel CIP purge tank and piping system.
Online pH transmitter and line temperature sensor in the CIP cleaning system, also have been equipped with.Rinse liquid temperature is in span of control during with the accuracy that guarantees scavenging solution pH and cleaning operation.
(9) component framework: adopt stainless steel to be made, comprise end plate, crossbeam, the special-purpose special-shaped mouth of import and export, be used for the installation of the fixing and film pipe of equipment, the connection of piping system etc.
(10) piping system: all polished processing in all pipelines and connection portion or surface passivation are handled, and avoid piping system quilting corrosion and damage or influence the feed liquid quality.
(11) assembly is imported and exported control valve: manually+and automatic control scheme
(12) assembly inlet and outlet pressure table: pressure transmitter+field instrument
(13) dialyzate is collected transparent hose
(14) dialyzate is collected and is gathered pipeline
Description of drawings
Fig. 1 is the process flow sheet that molybdenum is reclaimed in the sodium filter.
Fig. 2 is the reverse osmosis water production process schema;
Embodiment
One electric and automatic control system
(1) on-site data gathering system
A, at line pressure sensor
Being installed on assembly at line pressure sensor advances on film and the membrane pipeline, detect with operating pressure system, and data are sent to PLC handle, on display screen, show simultaneously, when pressure range surpasses normal value, the PLC Controlling System can be regulated the working speed of pump automatically, to keep constant voltage operation.
B, line temperature sensor
System is by being arranged on the working temperature of the temperature sensor detection system in carrier pipe road and the CIP detergent line, and detected value is sent to the PLC Controlling System.Controlling System is by the gap with set(ting)value of detected value relatively, judges temperature whether in normal range, the control valve of adjustment cold water or steam when deviation occurring.
C, flow sensor
Controlling System relies on and is arranged on flow sensor on the pipeline, feed flow and dialysis flow to the film system are monitored, and data are sent to PLC handle, on display screen, show simultaneously, when flow surpasses range of normal value, the PLC Controlling System can be regulated the working speed of pump or the aperture of regulating the automatic regulating valve on the discharging pipeline automatically, to keep the constant of flow.
D, pH transmitter
The pH transmitter is used to monitor CIP cleaning solution pH whether in span of control, if exceed controlling valu, system will report to the police automatically, and alert is adjusted concentration of lotion.
E, liquid level sensor
System all is equipped with liquid level sensor on circulation batch can, dialyzate basin and CIP purge tank, to guarantee that system's run duration is unlikely to feed liquid and overflows basin or jar interior nothing material operation.And, make system can operate operation automatically by the liquid level parameter value is set.
(2) PLC Controlling System
The PLC Controlling System adopts Mitsubishi's industrial controlling software, system's stable and reliable operation.
PLC is used for receiving, calculate, gather and transmitting control signal, and the data signal of all collection in worksite all is sent to the PLC controller, and is sent to each reference mark after the PLC control unit is handled.
PLC control unit and light current device are installed in the flooring power distribution cabinet, and the cabinet specification is the national standard specification.
Two, reverse osmosis filtration system
The nanofiltration system of this Project design is the membrane module system of 1 station symbol pseudotype, and component system is the core of film system, and system comprises:
(1) dehvery pump
Be used for feed liquid in circulation tank extraction and security personnel's strainer through being pumped into piping system.
(2) security personnel's strainer
Be used for the safety filtering of feed liquid before entering the nanofiltration filter membrane, the purpose that this strainer is set is to hold back owing to pipeline cleans the foreign matter that the impurity that carries in not thorough or mishandle and the feed liquid enters circulation batch can or CIP jar.
(3) topping-up pump
Topping-up pump adopts stainless steel hygiene-type pump, and pump is sent in the membrane module by the feed liquid of carrying on the transfer line is further pressurizeed, thereby forms required flow velocity and the filter pressure of membrane filtration.The design discharge of pump and operating pressure are advanced film flow and film service pressure type selecting according to feed liquid.
(4) membrane module
Comprise film pipe, film, stationary installation and sealing-ring, the effective filtration area of film system device is designed to 240m2.
(5) CIP cleaning system
Comprise stainless steel CIP purge tank and piping system.
Online pH transmitter and line temperature sensor in the CIP cleaning system, also have been equipped with.Rinse liquid temperature is in span of control during with the accuracy that guarantees scavenging solution pH and cleaning operation.
(6) component framework
The employing stainless steel is made, and comprises end plate, crossbeam, the special-purpose special-shaped mouth of import and export, is used for the installation of the fixing and film pipe of equipment, the connection of piping system etc.
(7) piping system
The all polished processing in all pipelines and connection portion or surface passivation are handled, and avoid piping system quilting corrosion and damage or influence the feed liquid quality.
(8) assembly is imported and exported control valve
Manually+automatic control scheme
(9) assembly inlet and outlet pressure table
Pressure transmitter+field instrument
(10) dialyzate is collected transparent hose
(11) dialyzate is collected and is gathered pipeline
The present invention is according to water quality, and through analog calculation, the reclamation rate of water is about 75%.
Claims (5)
1. the recycling of molybdenum waste water comprises that sodium filter membrane and reverse osmosis membrane reclaim molybdenum, and membrane separation technique can be operated at normal temperatures as new isolation of purified and concentration method.Application of membrane separation technology has formed new sewage water treatment method to sewage treatment area, but in this scheme, has used sodium filter membrane and reverse osmosis membrane to reclaim molybdenum.
Service temperature: 0-35 ℃, safety temperature scope:＜40 ℃;
Working pressure: 0-25BAR, safe working pressure≤41.4BAR
, feed liquid PH:2-3, safe PH scope: 2-11.5
System forms: nanofiltration filtration and reverse osmosis filtration system comprise that dehvery pump, security personnel's strainer, topping-up pump, sand filter, activated charcoal filter, membrane module, heat exchange system, CIP cleaning system, component framework, piping system, assembly import and export control valve, assembly inlet and outlet pressure table, dialyzate are collected transparent hose, dialyzate is collected and gathered pipeline; Electric and automatic control system: comprise on-site data gathering system, PLC Controlling System.
2. described according to claims 1: service temperature: 0-35 ℃, safety temperature scope:＜40 ℃;
3. described according to claims 1: working pressure: 0-25BAR, safe working pressure≤41.4BAR
4. described according to claims 1: feed liquid PH:2-3, safe PH scope: 2-11.5
5. described according to claims 1: as to have used sodium filter membrane and reverse osmosis membrane to reclaim molybdenum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810034522A CN101531408A (en) | 2008-03-13 | 2008-03-13 | Recovery and utilization of molybdenum waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810034522A CN101531408A (en) | 2008-03-13 | 2008-03-13 | Recovery and utilization of molybdenum waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101531408A true CN101531408A (en) | 2009-09-16 |
Family
ID=41102294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810034522A Pending CN101531408A (en) | 2008-03-13 | 2008-03-13 | Recovery and utilization of molybdenum waste water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101531408A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101816895A (en) * | 2010-05-10 | 2010-09-01 | 苏州市普滤得净化有限公司 | Reverse osmosis membrane tube system |
| CN102557212A (en) * | 2011-12-30 | 2012-07-11 | 金堆城钼业股份有限公司 | Method for treating and recycling molybdenum calcine water-washing waste water |
-
2008
- 2008-03-13 CN CN200810034522A patent/CN101531408A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101816895A (en) * | 2010-05-10 | 2010-09-01 | 苏州市普滤得净化有限公司 | Reverse osmosis membrane tube system |
| CN101816895B (en) * | 2010-05-10 | 2013-09-04 | 苏州市普滤得净化有限公司 | Reverse osmosis membrane tube system |
| CN102557212A (en) * | 2011-12-30 | 2012-07-11 | 金堆城钼业股份有限公司 | Method for treating and recycling molybdenum calcine water-washing waste water |
| CN102557212B (en) * | 2011-12-30 | 2013-06-19 | 金堆城钼业股份有限公司 | Method for treating and recycling molybdenum calcine water-washing waste water |
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Open date: 20090916 |