CN102826714A

CN102826714A - Device for treating process wastewater generated in organic waste gas treatment

Info

Publication number: CN102826714A
Application number: CN2012103283588A
Authority: CN
Inventors: 罗福坤; 李泽清; 康志杰
Original assignee: FUZHOU GARDEN ENVIRONMENTAL PROTECTION ENGINEERING Co Ltd
Current assignee: GARDEN ENVIRONMENTAL PROFECTION
Priority date: 2012-09-07
Filing date: 2012-09-07
Publication date: 2012-12-19
Anticipated expiration: 2032-09-07
Also published as: CN102826714B

Abstract

The invention provides a device for treating process wastewater generated in organic waste gas treatment. The device comprises a pool body of a square structure, a steam pipeline provided with an automatic control valve thereon, a liquid level sensor, a temperature sensor, an aeration fan and a control chamber; the pool body is provided with a wastewater inlet, a wastewater outlet, a plurality of aeration inlets, an aeration outlet, at least one steam opening and at least one temperature measuring point; the wastewater outlet is connected with a water pump; the pool body comprises a small pool I, a small pool II, a small pool III, a small pool IV, a small pool V and a small pool VI which are arranged in sequence; the bottoms of the small pool I, the small pool II, the small pool III, the small pool IV, the small pool V and the small pool VI are respectively provided with one of the aeration inlets; and the tops of the small pool I, the small pool II, the small pool III, the small pool IV, the small pool V and the small pool VI are respectively provided with the one aeration outlet. The device provided by the invention not only can perform secondary treatment on the process wastewater and recover an organic solvent contained in the wastewater, but also has the advantage of low energy consumption.

Description

Administer the treatment unit of the spent process water of organic exhaust gas generation

[technical field]

The present invention relates to a kind of treatment unit of spent process water, relate in particular to a kind of treatment unit of administering the spent process water of organic exhaust gas generation.

[background technology]

The improvement of volatile organic waste gas; Adopting charcoal absorption-water vapour desorption-condensing and recycling is that at present domestic main flow is administered one of technology, owing to adopt water vapour as desorption medium, therefore in condensation process, can produce a large amount of spent process waters in this technological process; In the technology in early days; Generally this part spent process water is directly emitted, but because of usually containing certain amount of organic solvent in this spent process water, directly discharging will cause the loss waste of this part organic solvent.

In order to address the above problem; The spent process water that the organic exhaust gas governance process is produced carries out secondary treatment and reclaims the organic solvent that wherein contains; The practitioner carries out straight run distillation through water distilling apparatus to this part spent process water; And straight run distillation need all be heated into steam with waste water in the spent process water and contained organic solvent, has caused the very big problem of energy consumption.

[summary of the invention]

Technical problem to be solved by this invention is to provide a kind of treatment unit of administering the spent process water of organic exhaust gas generation, not only can carry out secondary treatment and reclaim the organic solvent that wherein contains spent process water, and have advantage of low energy consumption.

The present invention solves the problems of the technologies described above through following technical scheme: a kind of treatment unit of administering the spent process water of organic exhaust gas generation; Comprise that the pond body, of a square structure is provided with the vapour line of autocontrol valve, a liquid level sensor, a TP, an Aeration fan, reaches a watch-keeping cubicle, said autocontrol valve, liquid level sensor and TP are connected to this watch-keeping cubicle; Said pond body is provided with a waste water import, a wastewater outlet, a plurality of aeration import, aeration outlet, at least one steam port and at least one point for measuring temperature; Said steam port is connected with vapour line; Said point for measuring temperature is connected with TP; Said wastewater outlet is connected with a water pump, and the valve of this water pump is electrically connected on the watch-keeping cubicle; Said pond body contains a Xiao Chi who sets gradually, No. two Xiao Chi, No. three Xiao Chi, No. four Xiao Chi, No. five Xiao Chi and No. six Xiao Chi; The top of a said Xiao Chi, No. two Xiao Chi, No. three Xiao Chi, No. four Xiao Chi and No. five Xiao Chi is communicated with successively; The bottom of said No. five Xiao Chi and No. six Xiao Chi is interconnected; The bottom of a said Xiao Chi, No. two Xiao Chi, No. three Xiao Chi, No. four Xiao Chi, No. five Xiao Chi is respectively equipped with at least one said aeration import; And the top of any is located among this Xiao Chi, No. two Xiao Chi, No. three Xiao Chi, No. four Xiao Chi or No. five Xiao Chi in the outlet of said aeration, and every said aeration import all is connected with Aeration fan through aeration tube; Said waste water import is located on Xiao Chi; Said wastewater outlet is located on No. six Xiao Chi; Said steam port and point for measuring temperature are located at respectively on any among a said Xiao Chi, No. two Xiao Chi, No. three Xiao Chi, No. four Xiao Chi and No. five Xiao Chi, and said liquid level sensor is located on No. six Xiao Chi.

Further, a said Xiao Chi, No. two Xiao Chi, No. three Xiao Chi, No. four Xiao Chi and No. five interior bottoms of Xiao Chi are respectively equipped with a gas distribution tube, and said gas distribution tube is communicated with corresponding aeration import.

The beneficial effect that the present invention administers the treatment unit of the spent process water that organic exhaust gas produces is: the design of this treatment unit can be with the spent process water that gets into the pond body through being steam heated to the temperature of setting; And blast the gas that aeration uses the organic solvent in the spent process water is produced and reclaimed; To realize that kind of the spent process water that the improvement organic exhaust gas produces is carried out the purpose that the organic solvent that wherein contains is also reclaimed in secondary treatment; And because of need not that the waste water in the spent process water is heated into steam, thereby has advantage of low energy consumption.

[description of drawings]

Combine embodiment that the present invention is done further description with reference to the accompanying drawings.

Fig. 1 is the synoptic diagram that the present invention administers the treatment unit of the spent process water that organic exhaust gas produces.

Fig. 2 is another synoptic diagram of pond body among the present invention.

Fig. 3 is a synoptic diagram again of pond body among the present invention.

[embodiment]

See also Fig. 1; The present invention administers the treatment unit of the spent process water of organic exhaust gas generation; The pond body 1, one that comprises a square structure is provided with vapour line 2, a liquid level sensor 3, a TP 4, an Aeration fan 5, and the watch-keeping cubicle (not shown) of autocontrol valve 21, and said autocontrol valve 21, liquid level sensor 3 and TP 4 are connected to this watch-keeping cubicle; Said pond body 1 is provided with a waste water import 101, a wastewater outlet 102, at least one steam port 103, at least one point for measuring temperature 104, a plurality of aeration import 105 and aeration outlet (not shown); Said steam port 103 is connected with vapour line 2; Said point for measuring temperature 104 is connected with TP 4; Said wastewater outlet 101 is connected with a water pump 6, and the valve of this water pump 6 (not shown) is electrically connected on the watch-keeping cubicle; Wherein, vapour line 2 heats the spent process water in the pond body 1 in order to input steam; Liquid level sensor 3 is used for the elevation of water surface of spent process water in the cell body 1; TP 4 is in order to the temperature of spent process water in the cell body 1; Aeration fan 5 blasts in the pond body 1 in order to the gas that aeration is used; Whether the watch-keeping cubicle is in order to the signal that receives TP 4 and transmitted and control the unlatching of autocontrol valve 21 or close, and open according to the valve that the signal that the liquid level sensor 3 that receives is transmitted is controlled water pump 6; In other words, the valve of TP 4 interlock control autocontrol valves 21, liquid level sensor 3 interlock control water pumps 6; Water pump 6 is in order to pump the waste water in the pond body 1.

Said pond body 1 contains a Xiao Chi setting gradually 11, No. two Xiao Chi 12, No. three Xiao Chi 13, No. four Xiao Chi 14, No. five Xiao Chi 15 and No. six Xiao Chi 16; The top of a said Xiao Chi 11, No. two Xiao Chi 12, No. three Xiao Chi 13, No. four Xiao Chi 14 and No. five Xiao Chi 15 is communicated with successively, and the bottom of said No. five Xiao Chi 15 and No. six Xiao Chi 16 is interconnected; And what the arrangement mode of a Xiao Chi setting gradually 11, No. two Xiao Chi 12, No. three Xiao Chi 13, No. four Xiao Chi 14, No. five Xiao Chi 15 and No. six Xiao Chi 16 was common has following several kinds: 1) two rows, three row as shown in Figure 1 and arranging clockwise; 2) arrange like Fig. 2 described " " word and come; 3) as Fig. 3 described two row three row and arrange counterclockwise.

Wherein, The bottom of Xiao Chi 11, No. two Xiao Chi 12, No. three Xiao Chi 13, No. four Xiao Chi 14, No. five Xiao Chi 15 is respectively equipped with at least one said aeration import 105; And the top (it is that example is set forth explanation that present embodiment is located at No. two Xiao Chi 12 with the aeration outlet) of any is located among this Xiao Chi 11, No. two Xiao Chi 12, No. three Xiao Chi 13, No. four Xiao Chi 14 or No. five Xiao Chi 15 in the outlet of said aeration, and every said aeration import 105 all is connected with Aeration fan 5 through aeration tube 51; Said waste water import 101 is located on Xiao Chi 11; Said wastewater outlet 101 is located on No. six Xiao Chi 16; Said steam port 103 and point for measuring temperature 104 are located on any among a said Xiao Chi 11, No. two Xiao Chi 12, No. three Xiao Chi 13, No. four Xiao Chi 14 and No. five Xiao Chi 15 (present embodiment is located at No. three Xiao Chi 13, points for measuring temperature 104 with steam port 103, and to be located at No. four Xiao Chi 14 be that example is set forth explanation) respectively; Liquid level sensor 3 is located on No. six Xiao Chi 16; Valve because of these liquid level sensor 3 interlock control water pumps 6; The liquid level that is measured to when liquid level sensor 3 reaches setting, then water pump 6 in the watch-keeping cubicle control open down with the discharge of the waste water behind the aeration or squeeze into other operation and use.

And in the present embodiment; In order to make the gas in each Xiao Chi that exposes to the sun can uniform distribution; Bottom in Xiao Chi 11, No. two Xiao Chi 12, No. three Xiao Chi 13, No. four Xiao Chi 14 and No. five Xiao Chi 15 is respectively equipped with a gas distribution tube (not shown), and said gas distribution tube is communicated with corresponding aeration import 105.

When the present invention uses: administer spent process water that organic exhaust gas produces and get in Xiao Chi 11 via waste water import 101 and No. two Xiao Chi 12 of flowing through successively, No. three Xiao Chi 13, No. four Xiao Chi 14, No. five Xiao Chi 15 and No. six Xiao Chi 16; And open Aeration fan 5 and blast the required gas of aeration, open liquid level sensor 3 and TP 4 simultaneously in this; When the temperature of TP 4 mensuration points for measuring temperature 104 was lower than design temperature (can make the temperature of organic solvent formation steam in the spent process water), autocontrol valve 21 was opened with heating via 13 pairs of spent process waters of steam port 103 No. three Xiao Chi of entering in the vapour line 2 in the watch-keeping cubicle; When the temperature of TP 4 mensuration points for measuring temperature 104 reached design temperature, the input that autocontrol valve 21 stops steam being closed in the watch-keeping cubicle; Organic solvent in the spent process water forms behind the steam gas along with aeration and flows out via the aeration outlet and reclaim, the completion in Xiao Chi 11, No. two Xiao Chi 12, No. three Xiao Chi 13, No. four Xiao Chi 14 and No. five Xiao Chi 15 of whole aeration process; When liquid level was higher in liquid level sensor 3 is measured to pond body 16, the valve of water pump 6 was opened in the watch-keeping cubicle, the waste water behind the aeration was discharged or squeezed into other operation via wastewater outlet 102 use.In addition, the organic solvent that reclaims of the present invention can carry out recycle through pipe connection to the front end of administering adsorber in the organic exhaust gas technology.

To sum up, the present invention not only can carry out secondary treatment and reclaim the organic solvent that wherein contains spent process water, and need not the waste water in the spent process water is heated into steam because of only needing that organic solvent is heated into steam, thereby has advantage of low energy consumption.

Claims

1. treatment unit of administering the spent process water that organic exhaust gas produces; It is characterized in that: comprise that the pond body, of a square structure is provided with the vapour line of autocontrol valve, a liquid level sensor, a TP, an Aeration fan, reaches a watch-keeping cubicle, said autocontrol valve, liquid level sensor and TP are connected to this watch-keeping cubicle; Said pond body is provided with a waste water import, a wastewater outlet, a plurality of aeration import, aeration outlet, at least one steam port and at least one point for measuring temperature; Said steam port is connected with vapour line; Said point for measuring temperature is connected with TP; Said wastewater outlet is connected with a water pump, and the valve of this water pump is electrically connected on the watch-keeping cubicle; Said pond body contains a Xiao Chi who sets gradually, No. two Xiao Chi, No. three Xiao Chi, No. four Xiao Chi, No. five Xiao Chi and No. six Xiao Chi; The top of a said Xiao Chi, No. two Xiao Chi, No. three Xiao Chi, No. four Xiao Chi and No. five Xiao Chi is communicated with successively; The bottom of said No. five Xiao Chi and No. six Xiao Chi is interconnected; The bottom of a said Xiao Chi, No. two Xiao Chi, No. three Xiao Chi, No. four Xiao Chi, No. five Xiao Chi is respectively equipped with at least one said aeration import; And the top of any is located among this Xiao Chi, No. two Xiao Chi, No. three Xiao Chi, No. four Xiao Chi or No. five Xiao Chi in the outlet of said aeration, and every said aeration import all is connected with Aeration fan through aeration tube; Said waste water import is located on Xiao Chi; Said wastewater outlet is located on No. six Xiao Chi; Said steam port and point for measuring temperature are located at respectively on any among a said Xiao Chi, No. two Xiao Chi, No. three Xiao Chi, No. four Xiao Chi and No. five Xiao Chi, and said liquid level sensor is located on No. six Xiao Chi.

2. the treatment unit of the spent process water that improvement organic exhaust gas according to claim 1 produces; It is characterized in that: a said Xiao Chi, No. two Xiao Chi, No. three Xiao Chi, No. four Xiao Chi and No. five interior bottoms of Xiao Chi are respectively equipped with a gas distribution tube, and said gas distribution tube is communicated with corresponding aeration import.