CN203498192U - Emulsion wastewater pretreatment equipment - Google Patents
Emulsion wastewater pretreatment equipment Download PDFInfo
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- CN203498192U CN203498192U CN201320485303.8U CN201320485303U CN203498192U CN 203498192 U CN203498192 U CN 203498192U CN 201320485303 U CN201320485303 U CN 201320485303U CN 203498192 U CN203498192 U CN 203498192U
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Abstract
The utility model provides emulsion wastewater pretreatment equipment. The wastewater pretreatment equipment comprises a filtering system and a cleaning system, wherein the filtering system of the pretreatment equipment comprises a circulating water tank, an ultrafiltration unit and an oxidant adding system for adding an oxidant in a filtering process, wherein the circulating water tank is internally provided with a heater, a temperature transmitter interlocked with the heater, a thermometer and a liquid level meter; the ultrafiltration unit comprises a feed pump, a circulating pump, a ceramic ultrafiltration membrane, a flow meter, a sight glass, a lifting basket filter, a temperature transmitter, a pressure gauge, a valve and the like; the cleaning system of the pretreatment equipment comprises a water supply tank, a medicine adding system and a cleaning solution circulating system, wherein the water supply tank is provided with a heater, a thermometer, a temperature transmitter, a liquid level meter and a high-precision turbidimeter for detecting the turbidity of a cleaning solution.
Description
Technical field
The utility model relates to a kind for the treatment of facility of waste water, particularly relates to a kind of for the pretreated treatment facility of emulsifying liquid waste water.
Background technology
In recent decades, a large amount of emulsifying liquid waste waters that produce in machinofacture, processing and cleaning process because of its complicated component, concentration is high, biodegradability is poor etc., and reason becomes a kind of more unmanageable high concentrated organic wastewater.
Present stage, emulsifying liquid waste water is processed the mode that conventionally adopts " pre-treatment-biochemical treatment-advanced treatment " this combination process to combine.Wherein preconditioning technique is the core of whole treatment process, because preconditioning technique must be removed as much as possible oil in water emulsion and reduce chemical oxygen demand (COD) (COD) to alleviate follow-up biochemical treatment and the pressure of advanced treatment.At present, emulsion preconditioning technique mainly concentrates on oil in water emulsion " breakdown of emulsion ", in recent decades various " breakdown of emulsion " method has been carried out to a large amount of research both at home and abroad, wherein chemical process has: acidization, salting-out process, acidifying coacervation, coacervation, demulsifier method etc., Physical has treatment with electrolytic method, By Bubble-floating Method, high-gradient magnetically separating, ultrafiltration process etc., also has physico-chemical processes, as chemical demulsification, electrolytic gas float glass process etc.Wherein, because ceramic membrane has good chemical stability, and there is acid-and base-resisting, organic solvent, high temperature resistant, anti-microbe ability, make to adopt the increasingly extensive pre-treatment that is applied to emulsion of ultrafiltration process of ceramic membrane.
In the ultrafiltration that utilizes ceramic membrane of routine, according to field operation experiences and project, investigate the constraint that is not limited to any existing theory, the optimum temps that ultrafiltration is processed is about more than 60 ℃.And for the consideration for pretreating effect and energy efficient, temperature is more suitable in 60 ℃.On-the-spot in wastewater treatment, often the existing steam of local use or high-temperature-hot-water add thermal wastewater feed liquid, or steam or high-temperature-hot-water that local use is supervened in other technological process heat, thereby guarantee the temperature of waste water feed liquid.The biochemical treatment unit entering after apparatus for supercooling is cooling subsequently through the water outlet of ceramic membrane ultrafitration is further processed, or after cooling and a large amount of low-temperature sewages of other unit discharges be mixed into biochemical treatment unit and further process.
Yet, at some, need to, to emulsion in pretreated project, not have the condition of utilizing existing steam or high-temperature-hot-water to heat.For obtaining the good ultrafiltration effect for emulsifying liquid waste water, for above-mentioned situation, in prior art, generally take following measure: on the one hand, adopt additional electrical heating device to heat, this causes electrically heated installed power large, and running cost is high; On the other hand, alternatively or additionally, increase the quantity (increasing the area of ultra-filtration membrane) of pottery membrane microfiltration device, this has increased cost of investment and maintenance cost undoubtedly, has also increased the complexity of equipment installation and operation.In adopting the measure that increases ceramic super-filtering film, the area of the ceramic super-filtering film used with carry out pre-treatment, ultra filtration unit that processing capacity is identical at 60 ℃ is compared, the area of the ceramic super-filtering film using conventionally need to increase and is twice above, so equipment cost increases greatly.
Summary of the invention
In order to solve the problems referred to above in prior art, the utility model proposes and a kind ofly new for emulsifying liquid waste water, carry out pretreated equipment.This equipment can low-cost, at normal temperatures emulsifying liquid waste water is carried out to pre-treatment expeditiously.
According to first aspect of the present utility model, a kind of pre-processing device for emulsifying liquid waste water is provided, described Wastewater Pretreatment equipment comprises filtering system and cleaning system, the filtering system of described pre-processing device comprises cyclic water tank, ultra filtration unit and in filtration procedure, adds the oxygenant dosing system of oxygenant, in cyclic water tank, be provided with well heater, with temperature transmitter, thermometer and the liquidometer of well heater mutual linking; This ultra filtration unit comprises feeding pump, recycle pump, ceramic super-filtering film, under meter, visor, hand basket strainer, temperature transmitter, tensimeter and valve etc.; The cleaning system of described pre-processing device comprises supply tank, adding of agent system and cleaning fluid circulatory system, the high precision turbidometer that this supply tank is provided with well heater, thermometer, temperature transmitter, liquidometer and detects scavenging solution turbidity.
According to second aspect of the present utility model, in Wastewater Pretreatment equipment, also comprise the controller that the data of the data that monitor according to high precision turbidometer and under meter are switched described equipment between filtering system and cleaning system.
According to the third aspect of the present utility model, in Wastewater Pretreatment equipment, controller has the control module that stops cleaning system when the effluent flux that ultra filtration unit detected returns to the 85-90% of design load, start filtering system.
According to fourth aspect of the present utility model, in Wastewater Pretreatment equipment, wherein said high precision turbidity is counted the high precision turbidometer that accuracy of detection reaches 0.0001-0.01NTU.
According to the 5th aspect of the present utility model, in Wastewater Pretreatment equipment, the design load of the Ceramic excessive filtration membrane area in the identical ultra filtration unit of processing capacity at 60 ℃ of the Area Ratios of described ceramic super-filtering film increases about 20-25%.
Had beneficial effect of the present utility model is at least following aspect:
Cleaning performance is more conventional cleaned, and has saved scavenging period;
Increased the useful working life of equipment; And
At normal temperatures emulsifying liquid waste water is carried out to pre-treatment and can reach 60 ℃ of effluent flux under condition.
Accompanying drawing explanation
Fig. 1 shows according to the schematic diagram of Wastewater Pretreatment equipment of the present utility model.
Fig. 2 shows according to the schematic diagram of the filtering system of Wastewater Pretreatment equipment of the present utility model.
Fig. 3 shows according to the schematic diagram of the cleaning system of Wastewater Pretreatment equipment of the present utility model.
Embodiment
Below with reference to accompanying drawing, in conjunction with embodiment to being further described according to equipment of the present utility model.
Unless had in this article special definition and explanation, definition or implication that various elements, term and the wording of mentioning in this specification sheets is generally understood with those of ordinary skills are consistent.It should be noted that, shape structure and the position of various pipelines, device, element and the assemblies etc. shown in accompanying drawing are only schematic, be to be understood that, each element shown in figure can have different forms and form according to field condition in practice, and this does not depart from spirit of the present utility model and purport.
According to an aspect of the present utility model, a kind of pre-processing device for emulsifying liquid waste water has been proposed.This pre-processing device comprises for implementing the ultrafiltration system of filter and for implementing the cleaning system of wash procedure.
In Fig. 1, schematically shown according to the formation of Wastewater Pretreatment equipment of the present utility model.Fig. 2 has schematically shown the filtering system (all parts connecting with the pipeline shown in solid line) according to the Wastewater Pretreatment equipment in an embodiment of the present utility model; And Fig. 3 has schematically shown the cleaning system (all parts connecting with the pipeline shown in solid line) according to the Wastewater Pretreatment equipment in an embodiment of the present utility model.
According in Wastewater Pretreatment equipment of the present utility model embodiment, this Wastewater Pretreatment equipment comprises filtering system and cleaning system.The filtering system of described pre-processing device comprises cyclic water tank, ultra filtration unit and in filtration procedure, adds the oxygenant dosing system of oxygenant, in cyclic water tank, be provided with well heater, with temperature transmitter, thermometer and the liquidometer of well heater mutual linking; This ultra filtration unit comprises feeding pump, recycle pump, ceramic super-filtering film, under meter, visor, hand basket strainer, temperature transmitter, tensimeter and valve etc.; The cleaning system of described pre-processing device comprises supply tank, adding of agent system and cleaning fluid circulatory system, the high precision turbidometer that this supply tank is provided with well heater, thermometer, temperature transmitter, liquidometer and detects scavenging solution turbidity.
In pre-processing device, also comprise the controller that the data of the data that monitor according to high precision turbidometer and under meter are switched described equipment between filtering system and cleaning system.And wherein controller has the control module that stops cleaning system when the effluent flux that ultra filtration unit detected returns to the 85-90% of design load, start filtering system.
Below, carry out by reference to the accompanying drawings to illustrate respectively each subsystem of Wastewater Pretreatment equipment.
Filtering system
Particularly, in one embodiment, the filtering system of Wastewater Pretreatment equipment comprises:
Ultra filtration unit, this ultra filtration unit is for receiving such emulsifying liquid waste water, this emulsifying liquid waste water is discharged from this cyclic water tank reach the liquid level of design temperature and setting in cyclic water tank 300 after, and this ultra filtration unit comprises feeding pump 405, recycle pump 406, ceramic super-filtering film 400, under meter 414, visor (not shown), strainer 422, temperature transmitter 411, tensimeter 417 and valve etc.; And
In Wastewater Pretreatment equipment, emulsifying liquid waste water water outlet after ultra filtration unit enters next processing unit, and backflow waste water flows into cyclic water tank 300, and the continuous enrichment of cyclic water tank petroleum class reaches after setting concentration and enters sump oil gathering system 700.
Compare with the membrane area in waste water feed liquid being heated to the ultrafiltration system of 60 ℃ in prior art, according in equipment of the present utility model, the membrane area of ceramic membrane ultrafitration system increases about 15-30% than the design load of the membrane area at 60 ℃, preferably increases about 20-25%.
In Wastewater Pretreatment equipment, controller (not shown) is monitored the water outlet instantaneous flow of ultra filtration unit by under meter 414, and the data relevant to instantaneous flow are sent to controller.Controller judges whether the water outlet instantaneous delivery in ultra filtration unit is less than preset value.If be less than preset value, stop filter, start cleaning system; If the water outlet instantaneous delivery of ultra filtration unit is greater than preset value, continue circular flow filtering system.
Preferably, if when the effluent flux of ultra filtration unit has reduced about 25-30%, start cleaning system.
Cleaning system
In conjunction with Fig. 1 and Fig. 3, illustrate that, according to the cleaning system of Wastewater Pretreatment equipment of the present utility model, this cleaning system comprises:
Supply tank, this supply tank cleans scavenging solution used for providing to filtering system, and this supply tank is provided with well heater, thermometer, temperature transmitter, liquidometer and high precision turbidometer;
Adding of agent system, this adding of agent system is for adding needed medicament according to aforesaid wash procedure; And
Cleaning fluid circulatory system, this circulation cleaning system comprises the ultra filtration unit in aforesaid filtering system and the corresponding pipeline that connects rinsing water tank and ultra filtration unit.
In one embodiment, as shown in Figure 1 to Figure 3, the supply tank in cleaning system comprises hot well tank 100 or rinsing water tank 200.Hot well tank 100 is provided with hot water shifting pump 108, ejector (not shown), liquidometer 113, well heater 107, thermometer 110, temperature transmitter 111 etc., be mainly used in that water for cleaning is heated to about 70-80 ℃ after by hot water service to rinsing water tank 200.In rinsing water tank, be provided with high precision turbidometer 212, liquidometer 213, well heater 207, thermometer 210, temperature transmitter 211 etc., and for receiving the cleaning agent from adding of agent system.Cleaning agents such as nitric acid, sodium hydroxide and oxygenant enters rinsing water tank 200 automatically by corresponding dosing system.The chain use of under meter 414 in washing unit in high precision turbidometer 212 and ultra-filtration equipment, save the cleaning water yield, added amount of chemical in ceramic super-filtering film electrically heated cleaning process, reduce the cleaning interval simultaneously, strengthen the stable judgement of cleaning performance, increase the acceptable life of ceramic super-filtering film.
In cleaning system, carry out the wash procedure for filtering system, carry out the circulation step of " washing the → the first medicament wash → wash → the second medicament wash → wash ", until obtain predetermined cleaning performance.
In the water washing process of cleaning system, after preparing required hot water, open the valve in rinsing water tank 200, hot water is entered in ultra filtration unit, and the rinsing that circulates in to ultra filtration unit in the cycle at a scavenging period.
In cleaning process, utilize the turbidity of turbidometer 212 monitoring rinse water, and utilize the water outlet instantaneous delivery of under meter 414 monitoring ultra filtration unit.Turbidometer is sent to controller with under meter by the data relevant to turbidity and effluent flux that monitor, and (for example this controller can adopt programmable logic controller (being PLC, Programmable Logic Controller) or micro-chip etc.The parameter of controller based on default judges the data that receive, if clean cycle the turbidity of the time post rinsing Water in Water Tanks set be less than set(ting)value or instantaneous delivery does not reach set(ting)value, rinsing water is remained to ensuing medicament and wash process, otherwise rinse water are discharged via valve.
The above-mentioned turbidity monitoring frequency for rinse water can be real-time, also can monitor according to predetermined time interval.
For example, according in an embodiment of the present utility model, in rinsing water tank, hot water shifting pump measures a certain amount of clear water and proceeds to and automatically start valve (such as Pneumatic butterfly valve etc.) after rinsing water tank, and hot water enters ceramic super-filtering film and cleans.In rinsing water tank, temperature transmitter 211 is chain with well heater 207, and liquidometer 213 is chain with the feeding pump 405 in ultrafiltration system.
In cleaning process, the turbidity of high-precision turbidometer (NTU) 212 monitoring rinse water, under meter monitoring water outlet instantaneous delivery in ultrafiltration system, turbidity and instantaneous delivery data upload are to PLC automatic decision, if the turbidity of the time post rinsing Water in Water Tanks that clean cycle is set is less than set(ting)value or instantaneous delivery does not reach set(ting)value, this part clear water remains to next process, otherwise by Pneumatic butterfly valve automatic-discharging.
After having carried out washing, next carry out the first medicament and wash, also utilize and add alkali and oxygenant to form in water scavenging solution ultra filtration unit is cleaned, particularly the ultra-filtration membrane of making such as materials such as potteries is cleaned.
The concentration average that adding of agent system is washed middle Automatically invoked alkali and oxygenant at the first medicament starts adding of alkali and oxygenant.If carried out the first medicament before, washed, and cleaned and according to the first medicament last time, wash the dosing system that the cleaning performance Automatically invoked alkali of (alkali+oxygenant is washed) and the concentration average of oxygenant start alkali and oxygenant and start working.For example,, by controlling dosage such as the controller of PLC etc.
Meanwhile, in the cleaning process of alkali+oxygenant, by the increment of turbidometer monitoring turbidity, automatically adjust adding of alkali and oxygenant.If turbidity value added data reaches set(ting)value or reaches, set cycling time, the water in rinsing water tank is by controlled valve automatic-discharging.
The first medicament is washed after (being also that alkali+oxygenant is washed) complete, and cleaning system enters water washing process again.Similarly, cleaning system is carried out successively aforesaid the second medicament and is washed, washes supervisor.
In above-mentioned cleaning process, the data that controller monitors according to high-precision turbidometer 212 and the data of under meter, calling data database data is judged cleaning performance automatically.If controller is determined the arbitrary link washing in above-mentioned cleaning process and is reached cleaning performance, stop cleaning system, start filtering system.If do not reach cleaning performance, continue the cleaning system of operation.
For example, according in an embodiment of the present utility model, controling appliance has following control module, when the effluent flux that ultra filtration unit detected when this control module returns to the 85-90% of design load, stops cleaning system, starts filtering system.
In Wastewater Pretreatment equipment of the present utility model, the temperature of about 20-40 ℃, preferably under 25-30 ℃ of temperature condition, move fillter section, synchronously add oxygenant, when effluent flux starts cleaning system during lower than the 25-30% of design load, start to carry out cleaning state.That is to say, equipment of the present utility model starts and/or stops corresponding system according to the aforesaid pretreatment process for emulsifying liquid waste water.Controller starts and/or stops corresponding system according to aforementioned set for the pretreatment process of emulsifying liquid waste water various pre-conditioned.
In Wastewater Pretreatment equipment of the present utility model, turbidometer is preferably high precision turbidometer.Preferably, the turbidimetric accuracy of detection of this high precision reaches 0.0001-0.01NTU.
The oxygenant synchronously adding in ceramic membrane ultrafitration process described in the utility model can be selected clorox, ozone etc., and dosage regulates according to the water quality of emulsion.
Although Wastewater Pretreatment equipment of the present utility model moves at far below 60 ℃, can reach effluent quality and effluent flux at 60 ℃, has greatly saved investment and running cost.
The various experiments of carrying out contriver show, with according to equipment of the present utility model, emulsifying liquid waste water being carried out to pre-treatment, at 25-30 ℃, moving result at ceramic membrane ultrafitration effluent quality and 60 ℃ does not have notable difference, and after ultrafiltration, COD clearance reaches more than 70%, and oil removal rate reaches more than 99%.And, in utilizing equipment of the present utility model, can obtain at short notice the good cleaning performance for ultra-filtration membrane.
By adopting according to method of the present utility model, for the wash procedure of filtering system, can recover the more than 95% of original flux, 2.75h consuming time, not only cleaning performance is more conventional cleaned, and saves scavenging period, increases the operational use time of ceramic membrane.Using according in method of the present utility model, therefore under 25-30 ℃ of condition, under 60 ℃ of conditions of ultra-filtration membrane Area Ratio, design load increase 20-25% can reach 60 ℃ of effluent flux under condition.
Should be understood that, above-mentioned embodiment of the present utility model is only for exemplary illustration or explain principle of the present utility model, and do not form restriction of the present utility model.Therefore any modification of, making, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model in the situation that not departing from spirit and scope of the present utility model.In addition, the utility model claims are intended to contain whole variations and the modification in the equivalents that falls into claims scope and border or this scope and border.
Claims (5)
1. for a pre-processing device for emulsifying liquid waste water, described Wastewater Pretreatment equipment comprises filtering system and cleaning system, it is characterized in that,
The filtering system of described pre-processing device comprises cyclic water tank, ultra filtration unit and in filtration procedure, adds the oxygenant dosing system of oxygenant, in cyclic water tank, be provided with well heater, with temperature transmitter, thermometer and the liquidometer of well heater mutual linking; This ultra filtration unit comprises feeding pump, recycle pump, ceramic super-filtering film, under meter, visor, hand basket strainer, temperature transmitter, tensimeter and valve etc.;
The cleaning system of described pre-processing device comprises supply tank, adding of agent system and cleaning fluid circulatory system, the high precision turbidometer that this supply tank is provided with well heater, thermometer, temperature transmitter, liquidometer and detects scavenging solution turbidity.
2. pre-processing device according to claim 1, is characterized in that, this pre-processing device also comprises the controller that the data of the data that monitor according to high precision turbidometer and under meter are switched described equipment between filtering system and cleaning system.
3. according to right, want the pre-processing device described in 2, it is characterized in that, described controller has the control module that stops cleaning system when the effluent flux that ultra filtration unit detected returns to the 85-90% of design load, start filtering system.
4. according to right, want the described pre-processing device of one of 1-3, it is characterized in that, described high precision turbidity is counted the high precision turbidometer that accuracy of detection reaches 0.0001-0.01NTU.
5. according to right, want the described pre-processing device of one of 1-3, it is characterized in that, the design load of the Ceramic excessive filtration membrane area in the identical ultra filtration unit of processing capacity at 60 ℃ of the Area Ratios of described ceramic super-filtering film increases 20-25%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320485303.8U CN203498192U (en) | 2013-08-09 | 2013-08-09 | Emulsion wastewater pretreatment equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320485303.8U CN203498192U (en) | 2013-08-09 | 2013-08-09 | Emulsion wastewater pretreatment equipment |
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| CN203498192U true CN203498192U (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320485303.8U Expired - Lifetime CN203498192U (en) | 2013-08-09 | 2013-08-09 | Emulsion wastewater pretreatment equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105000708A (en) * | 2015-07-01 | 2015-10-28 | 上海幽岫环保科技有限公司 | Waste emulsion quantitative reduction processing technology and apparatus |
-
2013
- 2013-08-09 CN CN201320485303.8U patent/CN203498192U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105000708A (en) * | 2015-07-01 | 2015-10-28 | 上海幽岫环保科技有限公司 | Waste emulsion quantitative reduction processing technology and apparatus |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHONGCHI WATER CO., LTD. Free format text: FORMER NAME: CSD (BEIJING) WATER WORKS OPERATION MANAGEMENT CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 100192, No. 2, block D, building 66, West Xiao Kou Road, four, Beijing, Haidian District Patentee after: CSD WATER SERVICE Co.,Ltd. Address before: 100192, No. 2, block D, building 66, West Xiao Kou Road, four, Beijing, Haidian District Patentee before: ZHONGCHI (BEIJING) WATER OPERATION CO.,LTD. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140326 |