CN103304071B

CN103304071B - Printing and dyeing wastewater heat energy recovery and anti-dirty treatment method

Info

Publication number: CN103304071B
Application number: CN201310283764.1A
Authority: CN
Inventors: 邢德茂; 邢峻玮
Original assignee: QINGDAO DETAI LINE Co Ltd
Current assignee: QINGDAO DETAI LINE Co Ltd
Priority date: 2013-07-08
Filing date: 2013-07-08
Publication date: 2014-05-07
Anticipated expiration: 2033-07-08
Also published as: CN103304071A

Abstract

The invention belongs to the technical field of wastewater heat energy recovery, and relates to a printing and dyeing wastewater heat energy recovery and anti-dirty treatment method. The method comprises the steps of starting a control switch in a switch box so that a recovery device begins to run and work; starting a control system, at which time high-temperature wastewater from a printing and dyeing production workshop is introduced to the recovery device through a centrifugal pump, open a faucet so that running water enters into the recovery device through a clean water inlet, implementing water-water exchange between cold clean water and heat wastewater through a heat exchange host machine, transmitting the heat wastewater to a regulating tank through a sewage outlet after reducing temperature and implementing acid-base equilibrium regulation until the sewage is neutral, and settling; discharging the sewage to a next wastewater treatment project through a discharge port after being settled for three times. The method is simple in process, simple and convenient to operate, rational in device structure, reliable in principle, low in manufacturing cost, good in recovery effect, high in recovery efficiency, and environmentally-friendly.

Description

A kind of dyeing waste water energy recovery and anti-fouling treatment method

Technical field:

The invention belongs to heat recovery from sewage technical field; relate to a kind of dyeing waste water energy recovery and anti-fouling treatment method; be applicable to textile industry and wastewater of dyeing and printing industry discharge and supplement in production system; by water water, exchange the thermal power transfer in waste water in process water, realization reduces wastewater temperature, heat recycles and protection of the environment.

Background technology:

At present, at chemical industry, weaving, in the enterprise production process such as printing and dyeing, all can produce the hot wastewater that a large amount of temperature is 65 ℃ of left and right, these waste water have also contained amount of heat when containing pollution substance, especially textile printing and dyeing wastewater, it has high temperature, high chroma, the feature of high pollution, because temperature is high, some bacterial classification can not be survived in hot wastewater, biochemical processing method is just difficult for adopting, so can only utilize physical chemistry method processes, and the heat energy of how as far as possible farthest recycling in these waste water is the energy-saving and cost-reducing vital task of textile industry, although a lot of enterprises make a lot of effort aspect treatment of dyeing wastewater, but mainly with end treatment, be main greatly, end treatment refers to be processed the Waste Water Centralized of each production process generation together, this not only makes wastewater treatment capacity strengthen, processing cost increases, and increased intractability, what is more important all concentrates on end by high temperature and processes, heat in water runs off can be very serious, this is unfavorable for recycling very much, in addition, end process to need first to the higher dyeing waste water of the temperature producing in production process, to carry out cooling, more also needs again to heat during reuse, and in this process, thermal waste is comparatively serious, cause the unnecessary loss of the energy, and pollute the environment, affect the eubiosis.If can realize the recycling of heat energy in wastewater treatment process, the heat in high-temperature dyeing waste water is just directly recycled in treating processes, make it circulation and enter into industrial production system, can not only reduce enterprise's production cost so, promote its competitive power, and can realize energy source secondary and effectively utilize, reduce Greenhouse effect with protection of the environment, therefore seek to design a kind of dyeing waste water energy recovery and anti-fouling treatment method, when reducing scale wastewater treatment cost, heat in waste water is collected to utilization, to reduce steam usage quantity in production process, and to waste water precipitate and filtration treatment after be discharged into again in lower step handling procedure, there is good economic benefit and social value.

Summary of the invention:

The object of the invention is to overcome the shortcoming that prior art exists, seek design a kind of dyeing waste water energy recovery and anti-fouling treatment method are provided, to realize the recycling to heat in spent hot water, protection of the environment, cost-saving.

To achieve these goals, the dyeing waste water energy recovery the present invention relates to and anti-fouling treatment method specifically comprise that installation starts retrieving arrangement, by the exchange of water water, reduced wastewater temperature, regulated pH-value processing and carry out sedimentation and process four steps of discharge:

(1) install and start retrieving arrangement: first each parts in retrieving arrangement are fixedly mounted according to conventional syndeton mode, impeller pump is placed in to the hot wastewater pond of production plant, again clear water import is fixedly docked with water tap, relief outlet is placed in the ingress of lower road wastewater treatment operation, and the trip switch in last starting switch box is worked by retrieving arrangement entry into service;

(2) by the exchange of water water, reduce wastewater temperature: start Controlling System, impeller pump entry into service is introduced into the hot wastewater of printing and dyeing production plant in retrieving arrangement, opening water tap makes tap water enter in retrieving arrangement by clear water import, cold clear water and thermal wastewater carry out the exchange of water water by heat exchange main frame, cold clear water is by the hot tub of taking away the heat of 50%-70% in thermal wastewater and entering into printing and dyeing production plant by clear water output for dyeing and rinsing, and the thermal wastewater after cooling enters to equalizing tank by sewage outlet;

(3) regulate pH-value to process: to the waste water entering into by pipeline after the cooling of equalizing tank, to carry out acid base equilibrium adjusting, if waste water is acid, the feeding port by equalizing tank upper right side inserts conventional alkaline matter and carries out neutralization reaction and make sewage be neutral; If waste water is alkaline, the feeding port by equalizing tank upper right side inserts conventional acidic substance and carries out neutralization reaction and make sewage be neutral;

(4) carry out sedimentation and process discharge: when being neutral sewage and mouthful entering into settling bowl by entering, coarse grain layer is by oarse-grained impurity elimination in sewage, middle granulosa carries out secondary settlement further except the dye substance in decontaminated water, fine sand layer is done the last sedimentation of filtering, remove fine impurity, finally by the sewage of crossing after three sedimentations, by relief outlet, be discharged in lower road waste water treatment engineering.

Compared with prior art, this recovery and anti-fouling treatment method can make the cold clear water temperature of equivalent rise to the more than 90% of former discharge thermal wastewater temperature in the present invention, thereby save required quantity of steam and the recycle pump electric power of heating process, and enterprise is reduced production costs; After the exchange of water water, cold clear water temperature rises to close to required technological temperature, thereby shortens the dyeing process time, enhance productivity, and not needing increases the investments such as any production unit, personnel, and can shorten the working hour of production and application hot water, increase turnout 20%-30%; Distinctive heat exchange operation front end filtering system, can guarantee that heat exchange main frame can not produce fouling and obstruction in long-play, thus the stabilised efficiency of the system of assurance; In the situation that not using cooling tower, effectively reduce wastewater temperature, reduce medicament usage quantity necessary in treating processes, save the expense of wastewater treatment, alleviate Greenhouse effect simultaneously, preserve the ecological environment; For using the factory of boiler can shorten the boiler operatiopn time, reduce topsoil output; By the pick up the heat of waste water, enterprise is saved production cost, increase sales volume, improved competitive power, implemented national energy-saving emission reduction tasks index, promoted enterprise's cleaner production image, guarantee its competitive edge; Its technological process is simple, easy and simple to handle, and apparatus structure is reasonable, and principle is reliable, low cost of manufacture, and recovering effect is good, and organic efficiency is high, environmental friendliness.

Accompanying drawing explanation:

Fig. 1 is technical process principle schematic of the present invention.

Fig. 2 is the apparatus main body structural principle schematic diagram the present invention relates to.

Embodiment:

Below in conjunction with accompanying drawing and by embodiment, the present invention is made to further description.

Embodiment:

The present embodiment is realized energy recovery and the antifouling processing of dyeing waste water in dyeing waste water energy recovery and antifouling treatment unit, and its concrete technology comprises that installation starts retrieving arrangement, by the exchange of water water, reduced wastewater temperature, regulated pH-value processing and carry out sedimentation and process four steps of discharge:

(1) install and start retrieving arrangement: first each parts in retrieving arrangement are fixedly mounted according to conventional syndeton mode, impeller pump 2 is placed in to the hot wastewater pond of production plant, again clear water import 10 is fixedly docked with water tap, relief outlet 35 is placed in the ingress of lower road wastewater treatment operation, and the trip switch in last starting switch box 18 is worked by retrieving arrangement entry into service;

(2) by the exchange of water water, reduce wastewater temperature: start Controlling System 6, impeller pump 2 entrys into service are introduced into the hot wastewater of printing and dyeing production plant in retrieving arrangement, opening water tap makes tap water enter in retrieving arrangement by clear water import 10, cold clear water and thermal wastewater carry out the exchange of water water by heat exchange main frame 4, cold clear water is by the hot tub of taking away the heat of 50%-70% in thermal wastewater and entering into printing and dyeing production plant by clear water output 11 for dyeing and rinsing, and the thermal wastewater after cooling enters to equalizing tank 27 by sewage outlet 9;

(3) regulate pH-value to process: to the waste water entering into by pipeline 36 after the cooling of equalizing tank 27, to carry out acid base equilibrium adjusting, if waste water is acid, the feeding port 26 by equalizing tank 27 upper right sides inserts conventional alkaline matter and carries out neutralization reaction and make sewage be neutral; If waste water is alkaline, the feeding port 26 by equalizing tank 27 upper right sides inserts conventional acidic substance and carries out neutralization reaction and make sewage be neutral;

(4) carry out sedimentation and process discharge: when being neutral sewage by entering mouthfuls 30 while entering into settling bowl 31, coarse grain layer 32 is by oarse-grained impurity elimination in sewage, middle granulosa 33 carries out secondary settlement further except the dye substance in decontaminated water, fine sand layer 34 is done the last sedimentation of filtering, remove fine impurity, finally by the sewage of crossing after three sedimentations, by relief outlet 35, be discharged in lower road waste water treatment engineering.

The dyeing waste water energy recovery that the present embodiment relates to and the agent structure of antifouling treatment unit comprise vacuum tank 1, impeller pump 2, automatic filter 3, heat exchange main frame 4, control cabinet 5, Controlling System 6, the clean pipe 7 of recoil, sewage import 8, sewage outlet 9, clear water import 10, clear water output 11, panel board 12, button 13, display screen 14, communicating pipe 15, docking latch closure 16, radiator window 17, switch capsule 18, air door 19, flowing water Valve 20, temperature dial plate 21, base 22, by-pass valve control 23, support 24, water inlet 25, feeding port 26, equalizing tank 27, discharge port 28, water outlet 29, enter mouth 30, settling bowl 31, coarse grain layer 32, middle granulosa 33, fine sand layer 34, relief outlet 35 and pipeline 36, on base 22, be fixedly shaped with successively from left to right and control cabinet 5, vacuum tank 1, impeller pump 2 and automatic filter 3, the fixing vacuum tank 1 that is communicated with of impeller pump 2, the top of vacuum tank 1 is fixedly installed air door 19 in order to the air in extracting vacuum tank 1, and the upper end face place of vacuum tank 1 is fixedly shaped with panel board 12 and is used for showing the atmospheric pressure value in vacuum tank 1, automatic filter 3 is fixed on the right-hand member of base 22 by support 24, dock with 11 sealings of gooseneck type clear water output by docking latch closure 16 bottom of automatic filter 3, and the top of clear water output 11 is fixedly shaped with flowing water Valve 20 and enters production plant in order to control clear water, the top of automatic filter 3 is fixedly shaped with by-pass valve control 23 in order to control automatic filter 3, fixing one end that is communicated with sewage import 8, upper end of automatic filter 3, the other end of sewage import 8 is fixedly communicated with impeller pump 2, the lower end of automatic filter 3 fixedly is communicated with one end of the clean pipe 7 of recoil by docking latch closure 16, recoils to clean and manages 7 the other end sewage outlet 9 that is docked and connected, the structure of heat exchange main frame 4 is that the pipeline folding type being arranged above and below is communicated with the heat exchange system that forms loop structure, sewage outlet 9 docks with the lowermost end seal for pipe joints of heat exchange main frame 4 by docking latch closure 16, and the lowermost end pipeline of heat exchange main frame 4 and place, the Butt Section of sewage outlet 9 are fixedly shaped with the temperature that temperature dial plate 21 is used for showing sewage, control cabinet 5 upper surfaces that are positioned at base 22 left end places are fixedly shaped with button 13 and display screen 14, control in cabinet 5 and Controlling System 6 is installed in order to control whole retrieving arrangement, the upper and lower of controlling cabinet 5 is all fixedly shaped with radiator window 17, and switch capsule 18 is fixed between bottom two pipelines of the heat exchange main frame 4 of controlling cabinet 5 the right, fixedly dock with clear water import 10 on the top pipeline right-hand member top of heat exchange main frame 4, and dock by two communicating pipe 15 sealing with the intermediate conduit right-hand member top of heat exchange main frame 4 the top pipeline right-hand member bottom of heat exchange main frame 4, sewage outlet 9 docks with water inlet 25 sealings of equalizing tank 27 by pipeline 36, the upper right side place of equalizing tank 27 offers feeding port 26 and is used for adding the filling that regulates waste water pH-value, the left lower end of equalizing tank 27 is fixedly shaped with discharge port 28 and is used for discharging waste material, the left end water outlet 29 of equalizing tank 27 docks with mouthful 30 sealings that enter of settling bowl 31, settling bowl 31 adopts conventional sewage sedimentation to process structure, in its inner chamber, be equipped with successively the coarse grain layer 32 that thickness is 70cm-100cm from top to bottom, thickness is the middle granulosa 33 of 50cm-70cm and the fine sand layer 34 that thickness is 30cm-50cm, respectively sewage is realized to coarse particles, the sedimentation filtration treatment of the refuse such as impurity and dyestuff matter, sewage is after treatment discharged in road processing engineering from the relief outlet 35 of settling bowl 31.

Claims

1. dyeing waste water energy recovery and an anti-fouling treatment method, concrete technology comprises installing and starts retrieving arrangement, by the exchange of water water, reduced wastewater temperature, regulated pH-value process and carry out sedimentation and process four steps of discharge:

(4) carry out sedimentation and process discharge: when being neutral sewage and mouthful entering into settling bowl by entering, coarse grain layer is by oarse-grained impurity elimination in sewage, middle granulosa carries out secondary settlement further except the dye substance in decontaminated water, fine sand layer is done the last sedimentation of filtering, remove fine impurity, finally by the sewage of crossing after three sedimentations, by relief outlet, be discharged in lower road waste water treatment engineering, it is characterized in that used apparatus main body structure comprises vacuum tank, impeller pump, automatic filter, heat exchange main frame, control cabinet, Controlling System, the clean pipe of recoil, sewage import, sewage outlet, clear water import, clear water output, panel board, button, display screen, communicating pipe, docking latch closure, radiator window, switch capsule, air door, flowing water Valve, temperature dial plate, base, by-pass valve control, support, water inlet, feeding port, equalizing tank, discharge port, water outlet, enter mouth, settling bowl, coarse grain layer, middle granulosa, fine sand layer, relief outlet and pipeline, on base, be fixedly shaped with successively from left to right and control cabinet, vacuum tank, impeller pump and automatic filter, the fixing vacuum tank that is communicated with of impeller pump, the top of vacuum tank is fixedly installed air door in order to the air in extracting vacuum tank, and the upper end face place of vacuum tank is fixedly shaped with panel board and is used for showing the atmospheric pressure value in vacuum tank, automatic filter is fixed on the right-hand member of base by support, dock with the sealing of gooseneck type clear water output by docking latch closure the bottom of automatic filter, and the top of clear water output is fixedly shaped with flowing water Valve and enters production plant in order to control clear water, the top of automatic filter is fixedly shaped with by-pass valve control in order to control automatic filter, fixing one end that is communicated with sewage import, upper end of automatic filter, the other end of sewage import is fixedly communicated with impeller pump, the lower end of automatic filter fixedly is communicated with one end of the clean pipe of recoil by docking latch closure, the other end that cleans pipe of the recoiling sewage outlet that is docked and connected, the structure of heat exchange main frame is that the pipeline folding type being arranged above and below is communicated with the heat exchange system that forms loop structure, sewage outlet docks with the lowermost end seal for pipe joints of heat exchange main frame by docking latch closure, and the lowermost end pipeline of heat exchange main frame and place, the Butt Section of sewage outlet are fixedly shaped with the temperature that temperature dial plate is used for showing sewage, the control cabinet upper surface that is positioned at base left end place is fixedly shaped with button and display screen, control in cabinet and Controlling System is installed in order to control whole retrieving arrangement, the upper and lower of controlling cabinet is all fixedly shaped with radiator window, and switch capsule is fixed between bottom two pipelines of the heat exchange main frame of controlling cabinet the right, fixedly dock with clear water import on the top pipeline right-hand member top of heat exchange main frame, and dock by the sealing of two communicating pipe with the intermediate conduit right-hand member top of heat exchange main frame the top pipeline right-hand member bottom of heat exchange main frame, sewage outlet docks with the water inlet sealing of equalizing tank by pipeline, the upper right side place of equalizing tank offers feeding port and is used for adding the filling that regulates waste water pH-value, the left lower end of equalizing tank is fixedly shaped with discharge port and is used for discharging waste material, the left end water outlet of equalizing tank docks with row's inlet seal of settling bowl, settling bowl adopts conventional sewage sedimentation to process structure, in its inner chamber, be equipped with successively the coarse grain layer that thickness is 70cm-100cm from top to bottom, thickness is the middle granulosa of 50cm-70cm and the fine sand layer that thickness is 30cm-50cm, respectively sewage is realized to coarse particles, the sedimentation filtration treatment of impurity and dyestuff refuse matter, sewage is after treatment discharged in road processing engineering from the relief outlet of settling bowl.