Summary of the invention
In order to solve above-mentioned technical problem, the purpose of this utility model is to provide the cyclic processing device of a kind of wire-cloth hole plain boiled water, this device has adopted the method for cascade filtration to process plain boiled water, has the advantages such as treatment effect is good, energy consumption is low, floor space is little, operational administrative is easy.
In order to realize above-mentioned object, the utility model has adopted following technical scheme:
A cyclic processing device for mthod of white water from paper making, this device comprises plain boiled water settling tower, plain boiled water storage tower, fibre filter, laminated filter, ultra-filtration equipment, clean water basin and spray water storage pond, described plain boiled water settling tower inside is provided with trilateral disrupter, the trilateral disrupter of net effluent in plain boiled water settling tower slows down, sedimentation, separated, in waste water, the suspended substance sedimentation of larger particles is to plain boiled water settling tank bottom, the throw out that separate plain boiled water settling tank bottom is pumped into pulping engine recovery part raw material and plain boiled water, plain boiled water after remaining sedimentation is processed is collected by plain boiled water storage tower, the plain boiled water of plain boiled water storage tower collection is connected to fibre filter by white water pump, at fibre filter front end, be provided with flocculation agent and add equipment, flocculation agent adds pipeline and is connected with filter inlet pipe, the water outlet of described fibre filter connects described laminated filter, the water outlet of laminated filter connects described ultra-filtration equipment, and the pipeline between laminated filter and ultra-filtration equipment is connected with ultrafiltration washing unit, ultrafiltration washing unit comprises cleaning case, scavenging pump and filter rinsed, the water outlet of ultra-filtration equipment connects described clean water basin, the water outlet of clean water basin connects spray pond, and on clean water basin, be provided with backwashing pump, backwashing pump is connected to ultra-filtration equipment, laminated filter and fibre filter by back flushing pipeline respectively, at the back flushing pipeline that is connected to connection laminated filter, is provided with backwash chemicals dosing plant.
As preferably, described fibre filter adopts fiber bundle filter.
As preferably, described ultra-filtration equipment adopts 26 ET-8060 type ultrafiltration membrane elements.
As preferably, described settling tower bottom is connected to pulping engine by pump is set.
The utility model, owing to having adopted above-mentioned technical scheme, has adopted the method for cascade filtration to process paper plain boiled water, has the advantages such as treatment effect is good, energy consumption is low, floor space is little, operational administrative is easy.
Below in conjunction with accompanying drawing, embodiment of the present utility model is made a detailed explanation.
The cyclic processing device of a kind of wire-cloth hole plain boiled water as shown in Figure 1, this device comprises plain boiled water settling tower 1, plain boiled water storage tower 2, fibre filter 3, laminated filter 5, ultra-filtration equipment 6, clean water basin 9 and spray pond 11; Described plain boiled water settling tower 1 connection network cheats plain boiled water, and plain boiled water settling tower 1 bottom is connected to pulping engine 12 by pump is set, and plain boiled water settling tower 1 top spillway is connected with the top water-in of plain boiled water storage tower 2.The water outlet of plain boiled water storage tower 2 is connected to fibre filter 3 by white water pump and pipeline, and fibre filter 3 adopts fiber bundle filter.And being provided with flocculation agent interpolation equipment 4 at the front end of fibre filter 3, the pipeline that flocculation agent adds equipment 4 is connected to described collection conduits; The water outlet of described fibre filter 3 connects described laminated filter 5, the water outlet of laminated filter 5 connects described ultra-filtration equipment 6, and the pipeline between laminated filter 5 and ultra-filtration equipment 6 is connected with ultrafiltration washing unit 7, ultrafiltration washing unit 7 comprises cleaning case 71, scavenging pump 73 and filter rinsed 72.The water outlet of ultra-filtration equipment 6 connects described clean water basin 9, the water outlet of clean water basin 9 connects spray pond 11, and on clean water basin 9, be provided with backwashing pump 10, backwashing pump 10 is connected to ultra-filtration equipment 6, laminated filter 5 and fibre filter 3 by back flushing pipeline respectively, at the back flushing pipeline that is connected to connection laminated filter 5, is provided with backwash chemicals dosing plant 8.
Technique of the present utility model is as follows:
1) plain boiled water producing for net hole arranges plain boiled water settling tower 1, plain boiled water storage tower 2 is produced net hole plain boiled water and collected;
2) then then the plain boiled water of collection mixed and filtered by fibre filter 3 with flocculation agent;
3) the product water of fibre filter 3 filters by laminated filter 5 again;
4) the product water of laminated filter 5 filters by ultra-filtration equipment 6, and the front end of described ultra-filtration equipment 6 connects ultrafiltration rinse water by arranging, and the rear end of ultra-filtration equipment 6 connects back-flushing, and back-flushing adds sterilant;
5) the product water of collecting ultra-filtration equipment 6 is to clean water basin 9, and connects backwashing pump 10 is set on clean water basin 9, backwashing pump 10 using the interior clear water of clean water basin 9 as ultra-filtration equipment 6, the flushing water source of laminated filter 5 and fibre filter 3; The water of clean water basin 9 is connected to spray pond 11 for equipment.
Adopt being prepared as follows of plain boiled water that above-mentioned method processes:
|Pollutent index ||PH value ||CODcr(mg/l) ||BOD5(mg/l) ||SS(mg/l) ||Turbidity (NTU) |
|Water is produced in design ||6.0-7.5 ||＜50 ||＜15 ||＜10 ||≤10 |
The concrete equipment of below the utility model being used is further described.
This equipment adopts synthetic fiber bundle as filter element, utilize the filtering layer that becomes hole to hold back most suspension granule foreign and colloidal impurity, and the part iron contamination in water, to extend filtration cycle, can guarantee finally to filter effluent quality, reach the requirement that reduces turbidity.It has the outstanding advantages such as filtration efficiency is high, filtration velocity is fast, retaining power is large, floor space is little, and the constructional feature of this equipment is that equipment inner filtering layer upper end is provided with fiber relative position device for limiting and density regulating apparatus.During operation, realize hydraulic automatism and regulate fibre density, realize Depth Filtration.During cleaning, rinse water is from bottom to top by filtering layer, and fibre density setting device is automatically pulled open fiber filtering layer to be relaxation state, can reach desirable cleaning performance.
Fabric filter adopts steel lining plastic structure, adopts autocontrol valve, and this strainer is furnished with tensimeter, under meter, is convenient to supervise its operation conditions, judges and filters and backwash.
, sterilant chemicals dosing plant
Consider in water that the materials such as organism, microorganism, bacterium enter in ultra-filtration membrane in a large number, can be in membrane element growth inside, stop up water stream channel, cause organism and the microbial contamination of membrane element, reduce the water production rate of film device, operating pressure is increased, cause the frequent cleaning of film device, shorten the work-ing life of membrane element.
This device adopts and in water, adds the method for clorox sterilant to kill bacterium, the microorganism in water, and oxidation of organic compounds, prevents the pollution to ultrafiltration, reverse osmosis membrane apparatus;
Dosing measuring apparatus realizes chain control with device working shaft.
, ultra-filtration equipment 6:
Ultra-filtration process can be understood as the screening process relevant to membrane pore size size, the pressure difference of film both sides of take is motivating force, take ultra-filtration membrane as filtration medium, under certain pressure, when stoste flows through film surface, the many tiny micropore gathering in ultra-filtration membrane surface only allows water and small-molecule substance by becoming through liquid, the material that in stoste, volume is greater than film surface micropore footpath is trapped within the influent side of film, become concentrated solution, thereby realize the purification to stoste, separated and concentrated object.
Ultra-filtration membrane is the even continuum of being made by macromolecular material, pure physical methods of filtration, and in sepn process, there is not the variation of matter in material.And in use do not have any impurity and come off, guarantee the pure of ultrafiltrated.
Hyperfiltration membrane assembly is selected import brand, and its structure is selected inner pressed hollow fiber ultrafiltration membrane.
This device is selected ET-8060 type ultrafiltration membrane elements quantity according to raw water quality, process characteristic and system ultra-filtration membrane design flux;
This device filter element should adopt modular design, and ultrafiltration group frame and supplementary unit thereof adopt fully automatic operation mode.Should be able to automatically complete put into operation → backwash → chemistry and strengthen the backwash → process that puts into operation, and well-equipped off-set facility for this reason.
Ultra-filtration equipment 6 matting:
In ultra-filtration equipment 6 operational processs, along with the accumulation of solid matter on film surface, permeable membrane pressure reduction increases gradually, when permeable membrane pressure reduction reaches 0.8～1.0bar, just need to carry out regular matting to device.
It is a set of that ultrafiltration chemically-cleaning device and reverse osmosis chemically-cleaning device share, and cleaning case, scavenging pump, filter rinsed and supporting instrument, pipeline, valve etc., consists of.
(7), backwash chemicals dosing plant:
Device enters ultra-filtration membrane at the long-term impurity such as partial organic substances, microorganism, bacterium that have in service, can be in membrane element growth inside, stop up water stream channel, cause organism and the microbial contamination of membrane element, reduce the water production rate of film device, operating pressure is increased, cause the frequent cleaning of film device, shorten the work-ing life of membrane element.
This device adopts and in backwash water, adds the method for oxidizing bactericide NaClO to kill bacterium, the microorganism in ultra-filtration membrane, and oxidation of organic compounds, prevents the pollution to ultra-filtration equipment;
Chemicals dosing plant; This dosing measuring apparatus realizes chain control with device working shaft; Back washing device water intaking is from ultrafiltration water tank;
The control of back washing device adopts program automatically to move;
(8), hyperfiltration reverse-rinsing pump (distribution transforming frequently)
The ultra-filtration equipment 6 full streams of employing or cross flow filter, Full-automatic backwashing operation scheme, need carry out backwash process one time every 30～40 minutes, and backwash process comprises the operations such as square impact, backwash, can have the water flux of efficient recovery ultra-filtration membrane, prevents dirty stifled;
This device configuration low-pressure pump, for backwash water is pressurizeed, for hyperfiltration reverse-rinsing provides propulsion source.The poor sudden change of mould causes the damage of film when preventing ultra-filtration membrane backwash, and backwashing pump design configurations converter plant, can realize stable pressure and flow.
(9), ultra-filtration equipment pipeline
Ultra-filtration equipment 6 body pipelines adopt steel lining plastic or UPVC, and wherein UPVC pipeline and valve are chemical grade, 1.6MPa; Ultra-filtration equipment 6 external pipes should adopt plastics lined pipe.