CN102303933A - Method for regenerating and recycling laundry waste water - Google Patents

Method for regenerating and recycling laundry waste water Download PDF

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Publication number
CN102303933A
CN102303933A CN201110114574A CN201110114574A CN102303933A CN 102303933 A CN102303933 A CN 102303933A CN 201110114574 A CN201110114574 A CN 201110114574A CN 201110114574 A CN201110114574 A CN 201110114574A CN 102303933 A CN102303933 A CN 102303933A
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water
laundry
washing
waste water
agent
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王柏华
聂素双
杜迎春
龚龑
屠凡
王刚
王永胜
解帅帅
丁丽兵
王晓蕾
向心圆
贺蓉晖
李佳丞
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Beijing Institute Fashion Technology
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Beijing Institute Fashion Technology
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Abstract

The invention relates to a method for regenerating and recycling laundry waste water, which is mainly used for regenerating and recycling laundry waste water discharged from intermittent industrial laundry machines which run independently in the laundry process of the laundry and dyeing industry. The aim of the invention is to treat laundry waste water by combining direct reuse of the laundry waste water or regeneration and recycling of the laundry water. The method comprises process treatment and front-end treatment. The process treatment is to direct reuse waste water which is laundry water from a laundry process flow in a countercurrent rinsing manner. An operation system in which the rinsing water flows continuously in a semi-intermittent manner and in which the laundry moves in an intermittent manner is designed for the intermittent industrial laundry machines which run independently, so as to realize the water use flow of the laundry water in countercurrent rinsing, and reduce volume of waste water in the rinsing phase; and under the conventional laundry process conditions, 50 to 70 percent of fresh water can be saved. The front-end treatment is to collect and treat waste water from the prewashing and waste water from the main washing in the production of laundry machines independently and treat the waste water by means of flocculation, centrifugal separation, filtration and the like, wherein the treated water is used in prewashing, main washing and rinsing and the reuse rate is 80 percent. The laundry waste water regenerating and recycling system constructed by combining process treatment and front-end treatment techniques comprehensively reduces consumption of fresh water by over 80 percent.

Description

A kind of laundrywastes recycling utilization method
Technical field
The present invention relates to a kind of laundrywastes recycling utilization method that is used for, the recycling utilization of the laundrywastes of the intermittent type industry washer of independent operating discharging in the industry that mainly can be used for doing washing.
Background technology
China is one of 12 countries and regions of serious water shortage in the world, and according to statistics in 2008, China's gross amount of water resources was 27434.3 billion cubic meters; 2071.1 cubic metres of water resource of per capita; Be 1/4 of world average level only, be listed as the 110th, national water supply total amount is 5910.0 billion cubic meters.In 20 end of the centurys, the whole nation has more than 400 city to have the insufficient water phenomenon in more than 600 city, and national water deficit reaches 400 billion cubic meters, and there is lack of water in various degree in nearly 2/3 city.Whole nation surface water pollution is still more serious, and seven big water system water quality totally are intermediate pollution, and lake (reservoir) eutrophication problem is outstanding; Groundwater quality is totally better, some areas water quality deterioration.Water pollutes and adds that water shortage causes water resources crisis.
The clothes laundering and dyeing trade is the novel industry that development in recent years is got up.With cleaning, services such as the washing of life clothing and public textiles, flatiron, dyeing, darning is the gesture that master's laundering and dyeing trade is fast development.By 2009, total about 250,000 families in laundry (factory) in the whole nation, annual revenue reaches more than 500 hundred million yuan, and the practitioner exceedes 1,200,000.Laundering and dyeing trade also exists some problems that need solve: the industry standard system is unsound; The skilled worker lacks; It is relative with the quality monitoring means backward to wash dyeing equipment; Modernization level is not high, and it is bigger etc. to be in international laundering and dyeing trade top standard's national gap in aspects such as washing quality and service and technology and America and Europe, Japan etc.
The community service industry that laundry service conduct and dress and personal adornment match, inseparable with daily life.Along with Economic development and growth in the living standard, the socialization of housework is more extensive; It is bright and colourful that progress of science and technology more makes dress and personal adornment constantly weed out the old and bring forth the new; These factors have been brought the demand to professional laundry service, also for the development of laundry service the vast market space are provided.
The governance process of laundrywastes mainly contains three approach: watershed management, process is administered and end treatment.
The laundrywastes watershed management, essential method is anhydrous laundry.Clothes washing method commonly used has washing and dry-cleans two types.Washing is the most general with the emulsion process laundry, and the emulsion process laundry mainly is to utilize moistening dispersion, solubilising, the emulsifying effect of tensio-active agent to oil material and adherent dirt bits, realizes the purification of clothing.Dry-cleaning is then many directly dissolves grease and oil soluble dirt on the fabric with organic solvent, but can not remove water-soluble impurity and spot.The greasy dirt of washing on can not only the flush away fabric, dust etc. can also well change the feel of clothing.Therefore, with the means existence bigger limitation of the method for dry-cleaning as the laundrywastes watershed management.
Process is administered; The generation of waste water is reduced; Like countercurrent rinsing; Be in printing and dyeing enterprise dyeing and finishing processing, to remove the water-saving washing process technology that loose colour uses on the textiles; On continuous processing device, adopt countercurrent rinsing; The trend of water and textiles move towards opposed on processing unit (plant); As: textiles trend be from rinsing machine first groove through after two; Three; The operation of fourth class groove; And clear water is from last groove injection of rinsing machine; As getting into from the 4th groove; Successively along three; Two; The operation of one groove; Medicament or concentration of wastewater in each washing bath; Strengthen successively from the 4th groove to the first groove, the water longshore current between each washing bath directly gets into next tank to being left intact.Therefore countercurrent rinsing belongs to the system that material and current all move continuously, and what in this system, adopt between each tank is that waste water direct reuse mode is carried out, and is the mode that printing and dyeing enterprise generally adopts.Dye enterprise washing; What adopt this water-saving technology of countercurrent rinsing is continuous batch washer; Its technological process is to utilize the rotating cage that is connected continuously; The past of falling the cage is moved backward successively with substrate (like cloth grass, towel); Current then from after contrary forward substrate operation scheme flow, medicament and concentration of wastewater also the edge from after forward current direction strengthen gradually.At the substrate of each rotating cage order batch is arranged; Water after washing like first substrate of the last clear water of the 4th cage washing; Clean for second from the bottom time that directly is used for second batch of substrate of the 3rd cage; Water after washing specifically gets into third from the bottom the cleaning that second cage is used for the 3rd batch of substrate, discharging afterwards.Continuous batch washer is to be to realize two-way flow with semi-batch mode between material and current, and promptly each the cleaning is intermittent mode, through mechanism substrate is fallen cage automatically between twice, before water flows directly in the cage.Also be the waste water direct reuse between each cage, although material and current are the semi-batch mode operation between each cage, continuous batch washer has also been realized carrying out continuously of material and washing generally, and efficient descends than the continuous washing machine of printing and dyeing enterprise to some extent.But continuous batch washer is than washing other washing plant that dyes enterprise, and it is big to belong to throughput, and personnel's recruitment is few, the equipment that production efficiency is advanced.At present in China; Dye enterprise's ability to receive orders deficiency owing to wash; And with problem such as being connected of hotel work and rest; Make continuous batch washer often be in the state of not producing at full capacity; Can not move in 7 * 24 hours; Causing production to be compared with the equipment design ability with water saving efficiency and decline to a great extent, so enterprise is dyed in most the washing of China, is that the intermittent type industry washer with independent operating is the means of production.The car washing installation of this type, washing, rinsing are each time disregarded all dischargings of waste concentration height in the water, no longer utilize.Current laundrywastes discharging of washing enterprise, medium and small sized enterprises get into urban sewage treatment system with sanitary sewers, and large-lot producer carries out discharging after the water treatment.Washing industry water resources is wasteful, does not have reuse basically.Beijing's water resources shortage breach reached for 11.8 billion cubic meter/years in 2010; And washing of Beijing dyed the present water consumption total amount of industry above annual 1 billion cubic meter; If can popularize laundrywastes recycling utilization water-saving technology in an all-round way, will remedy the water resources breach and be no less than for 0.8 billion cubic meter/year.Can practice thrift the water about 50%~70% to whole washing process adverse current rinse cycle under existing processing condition, but can't solve whole issue, still have part waste water to remain to be utilized.
The existing processing scheme of laundrywastes is that all Waste Water Centralized are collected, and unified then the organism in the waste water is directly degraded, and reaches directly discharging after the discharging standards.The laundrywastes main component is an organic pollutant, and waste water end treatment method has biochemical processing, materialization treatment technology and photocatalysis oxidation technique etc.Because all Waste Water Centralized are collected, the complicated component of waste water, cost is higher and difficulty is big during processing; The situation that in application in practice, often has pollutant discharge amount to exceed standard, for laundrywastes normally anion surfactant (LAS) exceed standard.
The washing process flow process of cotton class cloth grass, uniform is generally prewashing (removing floating ash), main (removal dirt), rinsing (removing washing composition and the residual dirt) three phases of washing.For the intermittent type industry washer of independent operating, substrate all moves in rotating cage in this three phases technological process, and each stage moves by water inlet washing (feeding in raw material) and draining and realizes.Prewashing, main wash once rinsing then need turn round N time (common N=2~4) of each running.
Process is administered in the present invention and front end improvement technology combines, and carries out the laundrywastes recycling utilization.Process is administered and to be primarily aimed at rinse water, because of its washing composition and waste concentration are lower, can be not treated, and direct reuse is the purpose that reaches process improvement with the direct reuse of countercurrent rinsing process enforcement laundrywastes in the N-1 time rinsing of next batch substrate.It is that the main waste water that produces with prewashing of washing is merged to collect and administers that front end is administered, to be the improvement of the waste water of washing composition and the higher part of waste concentration in the laundrywastes.The joint portion of these two improvement shows that terminal waste water that the process improvement stage produces is that the last whereabouts of countercurrent rinsing water is as main scouring water; It then is that the main waste water that produces with prewashing of washing is carried out single collection, flocculation, centrifugation, filtration etc. with the chemical separating means that front end is administered; Organism is therefrom separated with impurity, make the water after the improvement directly be used for prewashing water, main scouring water and replenish rinsing water.Take process improvement, front end to administer and combination of them respectively to dirt in the laundrywastes and detergent concentration distinct portions, formed a complete laundrywastes recycling utilization system.Wherein process is administered 50%~70% (relevant with the number of times of rinsing N) of partly can economizing on water, but front end is administered part reuse 80%, adds up to the total saving fresh water amount of taking of this system more than 80%.
Chemical substance attribute basically identical in the laundrywastes, improvement with strong points will weigh dirty and light dirty two-part water respectively with front end improvement technology and countercurrent rinsing technology governance; And through the water planning and design trend of rationally fetching water; Regulation effect is obvious, and reuse water only need satisfy the production demand, does not influence product quality and gets final product; Water quality can be lower than qualified discharge water and reuse water water quality; Therefore technological process is simple, and difficulty of governance reduces, and less input; Cost is lower, is the effective ways of water quality based water utilization.
Summary of the invention
The objective of the invention is for the laundrywastes recycling utilization provides a kind of method, mainly can be used for washing the recycling utilization of dying the laundrywastes of the intermittent type industry washer discharging of independent operating in the industry laundry operation.What the present invention adopted is the mode that the laundrywastes direct reuse combines with recycling utilization, and laundrywastes is administered, and comprises that process is administered and front end is administered.Process is administered the rinse water in the laundry process flow process, carries out the direct reuse of waste water by the countercurrent rinsing form.Rinse water of intermittent type industry washer design to independent operating are semi-batch continuous flow; Substrate is step operational system; Realize the water flow process of the countercurrent rinsing of rinse water; Reduce the wastewater flow rate of rinse stage, under existing laundry process condition, can practice thrift 50%~70% the fresh water amount of taking.It is that prewashing was administered with main waste water single collection of washing generation during laundry was produced that front end is administered; Handle through methods such as flocculation, centrifugation, filtrations, the water after the improvement uses in the rinsing prewashing, main being washed till, and reclamation rate reaches 80%; Set up the recycling utilization system, practiced thrift the usage quantity of fresh water.
Shown in laundrywastes recycling utilization process flow sheet, process improvement, front end are administered and combined the flow process of the laundrywastes recycling utilization system of foundation to be: fresh water gets into the extreme trace rinsing of first substrate, and the waste water that discharge and dehydration produce goes into 1 #Water storage tank, N-1 rinsing of second batch of substrate takes 1 #The water of waste water tank, and the like to the slubbing rinsing, discharge and waste water that dehydration produces is gone into m #Waste water tank is washed moisturizing as the master of a collection of substrate in back, accomplishes the waste water direct reuse course of countercurrent rinsing.Front end is administered then the master to be washed with the prewashing draining and in water tank, is collected, and goes into recovery tank through flocculation, centrifugation, filtration, the sterilization of ultraviolet pipe and stores, and as prewashing and main scouring water, if rinse water are not enough, also can supply water.So complete laundrywastes recycling utilization system is under the continuous production condition, and the comprehensive fresh water amount of taking of saving reaches more than 80%.
(1) poaching wastewater direct reuse: shown in laundrywastes recycling utilization process flow sheet right side; With the countercurrent rinsing is principle; The continuous flow of a rinse water semi-batch of design; The system of substrate batch production; Make rinse water not treated, direct reuse is to the N-1 time washing of next batch substrate.
(2) mainly wash, prewashing waste water single collection: shown in laundrywastes recycling utilization process flow sheet left side, the single collection in actual production is meant the collection that prewashing in the laundry operations such as cloth grass, uniform, the main higher concentration of washing the stage discharge is contained the laundrywastes of dirt.These two used water sources of stage are main with the reuse water that laundrywastes recycling utilization system is normally moved generation mainly.Research object of the present invention: 1. main actual waste water of washing the stage is 2. by the main waste water of washing the washing composition kind consumption preparation in stage.
(3) flocculation: adopt organic floculant, confirm to the rational flocculating conditions of laundrywastes.
(4) separate:, make laundrywastes can reach the requirement of recycling utilization through the screening and the combination of filtering material, separate mode.
(5) evaluation method of washing effect:
Formulate the evaluation method of washing effect of the present invention with reference to FZ/T10012-1998 " polyester-cotton fabric is prone to the detergency ability evaluation ".
A. standard smeary preparation: 1. colored fabric 14 #Machine oil 100g adds 0.1g carbon black (300 order), and is subsequent use with depositing in the wide-necked bottle behind homogenizer (6000-7000r/min) the stirring 10min.2. colourless incandescence thing is with 14 #Machine oil changes edible vegetable oil into, the identical preparation standard greasy dirt of all the other conditions.
B. the substrate sample is prepared: get and substrate identical fibre composition the fabric of identical yarn, description (or with 40 textile poplin cloth calicos), 5 of clip 150mm * 150mm sample, preservative film 70mm * 70mm3 piece, qualitative filter paper Φ 90mm * 3.
C. fabric sample is stain: fabric sample is placed on (its center overlaps) on the qualitative filter paper; Get 0.5mL standard greasy dirt with the 1mL graduated pipette; Elevation 20mm all slowly drips at the place in the sample central position; Press 5min with preservative film with the greasy dirt covering and with the heavy weight of diameter 50mm1kg; Take off weight and preservative film afterwards; Allow sample at room temperature place 30min, wash, repeat this method and obtain 3 by the contamination sample.
D. stain the washing of sample:, dye enterprise's washing and wash by implementing washing of laundrywastes reprocessing cycle system respectively with detergent formulation and washing process condition with 3 on the sample that stains and 2 on nonstaining sample.Same washing is carried out 2 times, wherein uses for the first time the fresh water washing of this enterprise.Use the reuse water washing after the present invention administers for the second time.
E. sample evaluation: colored fabric adopts GB250 evaluation variable color to evaluate aberration with gray scale, and colourless incandescence thing adopts GB251 grey scale for assessing staining of colour evaluation aberration.5 grades of aberration are best, and 1 grade the poorest, and 4 grades is premium grads; Standard specimen is selected the not contamination sample of fresh water washing for use.With aberration between the not contamination sample of reuse water washing and standard specimen, colored fabric and colourless incandescence thing all should be not less than 4 grades.The contamination sample of reuse water washing should be suitable with the aberration grade between standard specimen with the contamination sample that washs of fresh water with the aberration that does not stain between sample.Nonstaining sample washing back 1 usefulness 1 is equipped with, and after the sample washing of 3 contaminations, gets the mean value of aberration and confirms the aberration grade.
The working conditions of foregoing invention is following:
Summary of the invention (1) poaching wastewater direct reuse wherein: see shown in the laundrywastes recycling utilization process flow sheet right side: N rinsing of head batch substrate get rid of water with water pump suction 1 #Waste water tank stores, and N-1 rinsing of two batches of substrates takes 1 #The waste water tank store water, it gets rid of water with water pump suction 2 #Waste water tank stores, and (M-1) taken in N-M rinsing back and forth criticizing substrate to M successively #The waste water tank store water, it gets rid of water with water pump suction M #Waste water tank stores, and can replenish the main cooling water of washing.
The effective constituent that wherein summary of the invention (2) master washes, prewashing waste water is contained is that soap, powerful washing powder, general washing powder, emulsifying agent and oxygen float agent etc., and wherein soap concentration is 0.1-3.0g/L, and is preferred: 0.2-2.0g/L; Powerful washing powder concentration is: 0.3-5.0g/L, and preferred: 0.5-3.0g/L; General washing powder concentration is: 0.3-5.0g/L, and preferred: 0.5-3.0g/L; Emulsifier concentration is 0.1-2.5g/L, and is preferred: 0.5-2.0g/L; It is 0.5-5.0g/L that oxygen floats agent concentration, preferred: 1.0-3.0g/L.
Wherein float agent under 60 ℃ of-90 ℃ of conditions oxidation 10-20 minute through peroxide earlier before summary of the invention (3) the laundrywastes flocculation; Regulate pH with polymaleic acid again; Overall solution volume is 1000ml; 1. the selected flocculating conditions of soap is: flocculation agent 1-2mg/ml; PH value: 5-7; Preferably: flocculation agent: 1.2-1.7mg/ml, pH value: 5-6; 2. powerful washing powder flocculating conditions is: flocculation agent: 1-2mg/ml, and pH value: 8-10, preferred: flocculation agent: 1.2-1.7mg/ml, pH value: 8-9; 3. the emulsifying agent flocculating conditions is: flocculation agent: 1-2mg/ml, and pH value: 5-7, preferred: flocculation agent: 1.0-1.5mg/ml, pH value: 5-6; 4. general washing powder flocculating conditions is: flocculation agent: 0.5-3mg/ml, and coagulant aids: 0.1-0.5mg/ml, pH value: 5-7, preferred: flocculation agent: 0.5-2.5mg/ml, coagulant aids: 0.1-0.3mg/ml, pH value: 5-6; 5. powerful washing powder+soap+selected flocculating conditions of emulsifying agent is: flocculation agent 1-3.5mg/ml, and coagulant aids: 0.1-0.5mg/ml, pH value: 5-7, preferred: flocculation agent: 1.5-3.0mg/ml, coagulant aids: 0.1-0.3mg/ml, pH value: 5-6.
Wherein summary of the invention (4) is because the varying in size of the throw out that flocculation produces, and the filtering material that adopts the aperture to differ makes up and can improve separation efficiency, improves separating effect, reduces the cleaning frequency of strainer.The parting material that the present invention selects for use is the cotton filter core of PP, 0.1~0.2 micrometer ceramics filter core and 0.05 micron folded membrane filter core; The separate mode that adopts is will flocculate liquid earlier through the whizzer separation; Clear liquid after the separation uses surge pump that it is sent in the following three-stage filtration device: wherein the first step is with the cotton filter core of PP; The second stage is with the ceramic element of 0.1~0.2 micron pore size; The third stage carries out dynamic filtration with the tetrafluoroethylene folded membrane filter core of 0.05 micron pore size.
Wherein summary of the invention (5) adopts different washing composition under fresh water and two kinds of situation of reprocessing cycle water, to wash and speckles with smeary cloth; Colored fabric adopts GB250 evaluation variable color to evaluate aberration with gray scale; Colourless incandescence thing adopts GB251 grey scale for assessing staining of colour evaluation aberration, and the aberration grade is all more than 4 grades.
The invention has the beneficial effects as follows:
(1) adopt front end administer technological line with master wash, the improvement of prewashing operation waste water single collection, because of chemical substance attribute basically identical in the laundrywastes, administer with strong pointsly, effect is obvious.Reuse water after the inventive method is handled only need satisfy the laundry requirement, does not influence the laundry quality and gets final product, and water quality can be lower than qualified discharge water and reuse water water quality; Therefore technological process is simple, and difficulty of governance reduces, and less input; Cost is lower, is the effective ways of water quality based water utilization.
(2) generation that the employing process technology of administering can make waste water in the laundry processes reduces, and concerning the whole washing process, the adverse current rinse cycle can be practiced thrift 50%~70% water under existing processing condition like countercurrent rinsing.The laundrywastes that the employing front end is administered after the technical finesse is mainly washed the stage reuse prewashing, master, but reuse 80%.The laundrywastes recycling utilization system synthesis saving fresh water amount of taking that process is administered and front end is administered technical combinations foundation is more than 80%.
(3) adopt in the reuse water of organic floculant flocculation separation, do not use metal ions such as iron that inorganic flocculating agent flocculation back produces, aluminium, when using oxygen to float agent, can avoid cotton kind fabric (cellulose fabric) to produce oxygen and float broken hole and damage in the main stage of washing.
(4) adopt the washing under the two kinds of water situation of reuse water after fresh water and the inventive method processing of different washing composition to speckle with smeary cloth, the aberration grade is all more than 4 grades.Show that the reuse water that adopts after the inventive method is handled washs fabric, can reach and the identical washing effect of fresh water.
Description of drawings
Accompanying drawing is a laundrywastes recycling utilization process flow sheet of the present invention
Below further set forth the present invention with embodiment, but therefore do not limit the present invention in the specific embodiment scope.
Embodiment 1: the main preparation waste water flocculating of washing separates
Method by summary of the invention (2) takes by weighing general washing powder 2.0g, adds water 870ml, is heated to 70 ℃; Add color bleaching powder 1.0g, dissolving insulation 15 minutes, the cooling back adds polymaleic acid 1.0ml; Stir the cationic organic polymer coargulator E 130ml that the back adds 5g/L, the about 1L of cumulative volume left standstill after the stirring 15 minutes; Use qualitative filter paper to be the filter material static filtering; Reclaim the about 850ml of filtrating, filtrates tested pH value is 6, and transmittance is 98.0%; Turbidity is 4.83NTU, and surface tension is 35.6mN/m.Embodiment 2: the sports socks master washes waste water flocculating and separates
Get 7 heavy 100g of sports socks by the method for summary of the invention (2); Take by weighing general washing powder 2.0g; Add water 870ml; Put under the sports socks stirring and be heated to 70 ℃; Add the dissolving of 1.0g oxygen bleaching powder and stir insulation 15 minutes; Take out sports socks; The about 770ml of remaining raffinate; The cooling back adds polymaleic acid 1.0ml and stirs the cationic organic polymer coargulator E 125ml that the back adds 20.0g/L; The coagulant aids 150ml that adds 1.0g/L after 15 minutes is left standstill in stirring, and the about 1L of cumulative volume left standstill after the stirring 10 minutes; Carrying out throw out by the method for summary of the invention (4) separates; Reclaim the about 900ml of filtrating, surveying filtrating pH value is 6-7, and transmittance is 96.7%; Turbidity is 5.93NTU, and surface tension is 61.4mN/m.
Embodiment 3: the main preparation waste water individual event detergent ingredients flocculation separation of washing
Method by summary of the invention (2) takes by weighing soap 1.25g, is dissolved in the 700ml water under 50 ℃, is heated to 70 ℃; Add color bleaching powder 1.0g, dissolving insulation 15 minutes, the cooling back adds the 1ml polymaleic acid; Stir the cationic organic polymer coargulator E 300ml that adds 5g/L after 10 minutes; Add up to about 1L, left standstill after the stirring 15 minutes, filter with qualitative filter paper; Surveying filtrating pH value is 6; Transmittance is 99.0%, and turbidity is 4.05NTU, and surface tension is 65.9mN/m; Take by weighing powerful washing powder 2.0g, be dissolved in the 720ml water, be heated to 70 ℃; Add color bleaching powder 1.0g, dissolving insulation 15 minutes, the cooling back adds the polymaleic acid of 0.5ml; Stir the cationic organic polymer coargulator E 280ml that adds 5g/L after 5 minutes; Add up to about 1L, leave standstill 15min after the stirring, filter with qualitative filter paper then; Surveying filtrating pH value is 8-9; Transmittance is 100.0%, and turbidity is 0.95NTU, and surface tension is 53.4mN/m; Take by weighing emulsifying agent 1.5g, be dissolved in the 780ml water, be heated to 70 ℃; Add color bleaching powder 1.0g, dissolving insulation 15 minutes, the cooling back adds the 2.0ml polymaleic acid; Stir the cationic organic polymer coargulator E 220ml that adds 5g/L after 10 minutes; The about 1L of cumulative volume left standstill after the stirring 15 minutes, filtered with qualitative filter paper; Surveying filtrating pH value is 5-6; Transmittance is 97.2%, and turbidity is 5.38NTU, and surface tension is 55.2mN/m.
Embodiment 4: the main waste water flocculating of washing of detergent formulation preparation separates
Press the method for summary of the invention (2); Take by weighing soap 1.25g; Powerful washing powder 2.0g; Emulsifying agent 1.5g is dissolved under 50 ℃ in the 700ml water, is warming up to 70 ℃ under stirring; Add oxygen and float agent 1.3g; Dissolving back insulation 15 minutes adds the 2.5ml polymaleic acid again after the cooling, stir the cationic organic polymer coargulator E 300ml that adds 5g/L after 10 minutes; The about 1L of cumulative volume; Left standstill after the stirring 15 minutes, and filtered, reclaim the about 870ml of filtrating with qualitative filter paper; Surveying filtrating pH value is 5; Transmittance is 99.2%, and turbidity is 3.98NTU, and surface tension is 67.5mN/m.
Embodiment 5. sports socks detergent formulation masters wash waste water flocculating and separate
Press the method for summary of the invention (2); Get 7 of sports socks, heavy 150g takes by weighing powerful washing powder 1.5g; Soap 1.0g; Emulsifying agent 1.0g is dissolved under 50 ℃ in the 1L water, adds sports socks; Be warming up to 70 ℃ under stirring; Add that dissolved 10g/L oxygen floats agent 134ml, stir insulation 15 minutes, take out sports socks; The about 950ml of remaining raffinate; The cooling back adds polymaleic acid 2.5ml, stirs the cationic organic polymer coargulator E 200ml that adds 20g/L after 10 minutes, the coagulant aids 325ml of 1g/L; The about 1.5L of cumulative volume; Left standstill after the stirring 15 minutes, and carried out throw out by the method for summary of the invention (4) and separate, reclaim filtrating 1.3L; Surveying filtrating pH value is 5-6; Transmittance is 98.1%, and turbidity is 5.82NTU, and surface tension is 56.0mN/m.
Embodiment 6. washing effect evaluations
Press summary of the invention (5) A, adopt edible vegetable oil preparation standard greasy dirt; Press summary of the invention (5) B with 40 textile poplin cloth calicos and prepare the substrate sample; C stains sample by summary of the invention (5); Wash by summary of the invention (5) D item.The wherein detergent formulation and the same embodiment of the invention of washing process condition (4).Wash for the first time and take the laboratory deionized water, the water of the discharge water of washing for the first time through method for recycling improvement of the present invention is taken in washing for the second time, washes and the first pass rinsing water as prewashing is main.Take the laboratory deionized water as second and third time rinsing water, after washing fabric is dried.With GB251 grey scale for assessing staining of colour evaluation aberration, aberration is 5 grades between the non-contamination appearance cloth of the non-contamination appearance cloth of use laboratory deionized water wash and the water washing that the present invention administers.The non-contamination appearance cloth that uses the laboratory deionized water wash with stain that aberration is the 4-5 level between kind cloth.Aberration is the 4-5 level between non-the contaminations appearance cloth that uses the water washing that the present invention administers and contamination kind cloth.Use do not stain appearance cloth and use the present invention of laboratory deionized water wash to administer that aberration is 4 grades between the contamination appearance cloth of water washing.Without the appearance cloth of washing and without the aberration between the nonstaining appearance of washing cloth is the 2-3 level.Illustrate that detergent formulation and washing process are effective to the standard smeary washing of artificial preparation.Different bath wateies is not obvious to the difference of washing effect.The washing effect that the present invention administers water is suitable with laboratory deionized water wash effect, satisfies the laundry industry requirement.
Embodiment 7: sheet quilt cover class cloth grass washing (shown in laundrywastes recycling utilization process flow sheet) substrate: cloth grass 80Kg
One, prewashing: the 350L that from recovery tank, fetches water, arrive water level after scouring 3 minutes.
Two, draining 200L is to foul water tank.
Three, main washing: the 100L that from recovery tank, fetches water, add steam.
When steam is added to 70 ℃, add color bleaching powder 700g, washed 15 minutes;
Four, cool-down method progressively:
1. not draining is earlier from 3 #Waste water tank water intaking 200L;
2. after rotating 2 minutes, draining 250L is to foul water tank;
3. again from 3 #Waste water tank water intaking 200L, recovery tank water intaking 50L changeed 2 minutes, and draining 300L is to foul water tank.
Five, rinsing for the first time: from 2 #Waste water tank water intaking 300L changeed the draining and the 400L to 3 that dewaters 3 minutes #Waste water tank.
Six, rinsing for the second time: from 1 #Waste water tank water intaking 350L changeed draining 250L to 23 minutes #Waste water tank.
Seven, rinsing for the third time: add fresh water 200L, heat 35 ℃-45 ℃, add the neutralizing acid agent: 300 grams, changeed 3 minutes, draining and high speed dewatering add up to draining 300L to get into 1 #Waste water tank.
Eight, the cloth grass goes out machine
Get, draining accounts:
Foul water tank receives prewashing sewer 200L, and the main sewer 250L+300L that washes twice adds up to 750L;
Recovery tank: receive reprocessing cycle treating water 600L (750 * 80%);
1 #Waste water tank receives rinsing draining for the third time and high speed dewatering produces hydration meter 300L.Rinsing for the second time needs from 1 #Waste water tank water intaking 350L, breach 50L is from the recovery tank supply;
2 #Waste water tank receives the draining of rinsing for the second time 250L.Rinsing for the first time needs from 2 #Waste water tank water intaking 300L, breach 50L is from the recovery tank supply;
3 #Waste water tank receives the row of rinsing for the first time, dehydration 400L.The main water 450L that lowers the temperature for twice that washes is from 3 #Waste water tank water intaking 400L, recovery tank moisturizing 50L;
Main washing from recovery tank water intaking 100L adds moisturizing 3 * 50L=150L three times, adds prewashing again from the recovery tank 350L that fetches water, and adds up to the 600L that from recovery tank, fetches water, and receives reprocessing cycle treating water 600L balance with recovery tank.
This time laundrywastes recycling utilization system each several part water cycle is in equilibrium state basically.Wherein take fresh water 200L, cloth grass 80Kg dehydration back band water is 50L more than 60%, and surplus 150L is that flocculation, centrifugation, filtration and part are run consumption such as leaking evaporation.
If each stage is all taken fresh water, not reuse is directly discharged, and then prewashing 350L leads and washes 550L, and three rinsings (300+350+200) add up to 850L, and this 80Kg cloth grass is taken fresh water 1750L altogether, saves the fresh water amount of taking 1550L by contrast, water saving 88.6%.
Wash with the fresh water washing and with current embodiment of the present invention by above-mentioned washing process with same batch cloth grass, the aberration between this different cloth grass is pressed the evaluation of GB251 grey scale for assessing staining of colour, and the aberration grade is 4-5, shows that washing effect meets the demands.

Claims (8)

1. the method for a laundrywastes recycling utilization mainly can be used for washing the recycling utilization of dying the laundrywastes of the intermittent type industry washer discharging of independent operating in the industry laundry operation.
2. what adopt according to the said method of claim 1 is that process is administered and front end improvement array mode.Process is administered the rinse water in the laundry process flow process, carries out the direct reuse of waste water by the countercurrent rinsing form.Front end is administered prewashing and main waste water single collection improvement of washing generation in the production of will doing washing, and handles through methods such as flocculation, centrifugation, filtration, ultraviolet-sterilizations, and the water after the improvement is washed till in the rinsing and uses prewashing, master.
3. administer according to the process in the said method of claim 2 and be: be principle with the countercurrent rinsing; The continuous flow of a rinse water semi-batch of design; The system of substrate batch production makes rinse water not treated, and direct reuse is to the N-1 time washing of next batch substrate.
4. the effective constituent that the master washes, prewashing waste water is contained in administering according to the said method front end of claim 2 is that soap, powerful washing powder, general washing powder, emulsifying agent and oxygen float agent etc., and wherein soap concentration is 0.1-3.0g/L, and is preferred: 0.2-2.0g/L; Powerful washing powder concentration is: 0.3-5.0g/L, and preferred: 0.5-3.0g/L; General washing powder concentration is: 0.3-5.0g/L, and preferred: 0.5-3.0g/L; Emulsifier concentration is 0.1-2.5g/L, and is preferred: 0.5-2.0g/L; It is 0.5-5.0g/L that oxygen floats agent concentration, preferred: 1.0-3.0g/L.
5. according to claim 2,4 said methods; Float agent under 60 ℃ of-90 ℃ of conditions oxidation 10-20 minute through peroxide earlier before the laundrywastes flocculation; Regulate pH with polymaleic acid again; Overall solution volume is 1000ml; 1. the selected flocculating conditions of soap is: flocculation agent 1-2mg/ml; PH value: 5-7, preferred: flocculation agent: 1.2-1.7mg/ml, pH value: 5-6; 2. powerful washing powder flocculating conditions is: flocculation agent: 1-2mg/ml, and pH value: 8-10, preferred: flocculation agent: 1.2-1.7mg/ml, pH value: 8-9; 3. the emulsifying agent flocculating conditions is: flocculation agent: 1-2mg/ml, and pH value: 5-7, preferred: flocculation agent: 1.0-1.5mg/ml, pH value: 5-6; 4. general washing powder flocculating conditions is: flocculation agent: 0.5-3mg/ml, and coagulant aids: 0.1-0.5mg/ml, pH value: 5-7, preferred: flocculation agent: 0.5-2.5mg/ml, coagulant aids: 0.1-0.3mg/ml, pH value: 5-6; 5. powerful washing powder+soap+selected flocculating conditions of emulsifying agent is: flocculation agent 1-3.5mg/ml, and coagulant aids: 0.1-0.5mg/ml, pH value: 5-7, preferred: flocculation agent: 1.5-3.0mg/ml, coagulant aids: 0.1-0.3mg/ml, pH value: 5-6.
6. according to claim 2,4,5 said methods, parting material is the cotton filter core of PP, 0.1~0.2 micrometer ceramics filter core and 0.05 micron folded membrane filter core; Separate mode separates through whizzer earlier for flocculation liquid; Clear liquid after the separation uses surge pump that it is sent in the following filtration unit: the cotton filter core of first step PP wherein; The ceramic element of the second stage 0.1~0.2 micron pore size, the tetrafluoroethylene folded membrane filter core of the third stage 0.05 micron pore size.
7. adopt different washing composition under fresh water and two kinds of situation of reprocessing cycle water, to wash and speckle with smeary cloth; Colored fabric adopts GB250 evaluation variable color to evaluate aberration with gray scale; Colourless incandescence thing adopts GB251 grey scale for assessing staining of colour evaluation aberration, and the aberration grade is all more than 4 grades.
8. according to claim 2,5 said methods, flocculation agent is: cationic organic polymer coargulator (molecular weight: 500-200 ten thousand), coagulant aids is: sodium polyacrylate, pH regulator agent are polymaleic acid.
CN201110114574A 2011-05-05 2011-05-05 Method for regenerating and recycling laundry waste water Pending CN102303933A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104514122A (en) * 2013-09-27 2015-04-15 海尔集团技术研发中心 Flocculation washing machine
CN104947385A (en) * 2014-03-27 2015-09-30 海尔集团公司 Washing machine recycling water processing device and washing machine
CN104947384A (en) * 2014-03-27 2015-09-30 海尔集团公司 Washing machine flocculation device with self-cleaning function and washing machine
CN105088671A (en) * 2014-05-08 2015-11-25 青岛海尔洗衣机有限公司 Filtering and washing device of washing machine, washing method and washing machine
CN105088642A (en) * 2014-05-08 2015-11-25 青岛海尔洗衣机有限公司 Washing machine control method and washing machine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107177953B (en) * 2016-03-09 2020-08-04 青岛海尔洗衣机有限公司 Flocculation washing machine and control method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1385382A (en) * 2001-05-15 2002-12-18 李振航 Sewage treating and recovering device for washing machine
CN2756620Y (en) * 2005-01-08 2006-02-08 庞华 Water filter of washing machine
CN101279806A (en) * 2008-05-22 2008-10-08 吴紫城 Recycling use method and apparatus for wastewater of carwash and laundry
CN201258412Y (en) * 2008-10-24 2009-06-17 卢菁 Waste water cyclic utilization device for washing machine
WO2009129362A2 (en) * 2008-04-18 2009-10-22 Pellerin Milnor Corporation Continuous batch tunnel washer and method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201056528Y (en) * 2007-06-06 2008-05-07 刘国和 Water treatment system for waste water reclamation and cyclic utilization
JP2010207562A (en) * 2009-03-06 2010-09-24 Tomisaburo Kamakura Reuse of washing water, reuse of rinse water and reduction of idle turning of rotary blade

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1385382A (en) * 2001-05-15 2002-12-18 李振航 Sewage treating and recovering device for washing machine
CN2756620Y (en) * 2005-01-08 2006-02-08 庞华 Water filter of washing machine
WO2009129362A2 (en) * 2008-04-18 2009-10-22 Pellerin Milnor Corporation Continuous batch tunnel washer and method
CN101279806A (en) * 2008-05-22 2008-10-08 吴紫城 Recycling use method and apparatus for wastewater of carwash and laundry
CN201258412Y (en) * 2008-10-24 2009-06-17 卢菁 Waste water cyclic utilization device for washing machine

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104514122A (en) * 2013-09-27 2015-04-15 海尔集团技术研发中心 Flocculation washing machine
CN104514122B (en) * 2013-09-27 2017-01-18 海尔集团技术研发中心 Flocculation washing machine
CN104947385A (en) * 2014-03-27 2015-09-30 海尔集团公司 Washing machine recycling water processing device and washing machine
CN104947384A (en) * 2014-03-27 2015-09-30 海尔集团公司 Washing machine flocculation device with self-cleaning function and washing machine
CN104947385B (en) * 2014-03-27 2018-12-25 青岛海尔洗衣机有限公司 A kind of washing machine cycles water treatment facilities and washing machine
CN104947384B (en) * 2014-03-27 2018-12-25 青岛海尔洗衣机有限公司 A kind of washing machine flocculation plant and washing machine with self-cleaning function
CN105088671A (en) * 2014-05-08 2015-11-25 青岛海尔洗衣机有限公司 Filtering and washing device of washing machine, washing method and washing machine
CN105088642A (en) * 2014-05-08 2015-11-25 青岛海尔洗衣机有限公司 Washing machine control method and washing machine
CN105088671B (en) * 2014-05-08 2019-08-27 青岛海尔洗衣机有限公司 A kind of washing machine filtering cleaning device, cleaning method and washing machine

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