CN209957584U

CN209957584U - Zero-discharge treatment device for mixed industrial sewage membrane concentrated solution

Info

Publication number: CN209957584U
Application number: CN201920669572.7U
Authority: CN
Inventors: 郭琳琳; 公丕玉; 杨雪楠; 邱成龙
Original assignee: China Energy Conservation (linyi) Environmental Protection Energy Co Ltd; China Environment Protection Group Co Ltd
Current assignee: China Energy Conservation (linyi) Environmental Protection Energy Co Ltd; China Environment Protection Group Co Ltd
Priority date: 2019-05-11
Filing date: 2019-05-11
Publication date: 2020-01-17
Anticipated expiration: 2029-05-11

Abstract

The utility model discloses a zero discharge treatment device for a mixed industrial sewage membrane concentrated solution, which is characterized by comprising a softening system (1), a DM system (2), a DTRO system (3), an MVR system (4), an incinerator (5) and a first reclaimed water storage device (6); and the second reclaimed water storage device (7). The utility model has the advantages that: the utility model realizes the harmless treatment and zero discharge treatment of the membrane concentrated solution; the utility model discloses the volume of the normal water that produces at the in-process of handling membrane concentrate is 94% -95% of membrane concentrate volume, and the normal water that produces all can be utilized, the water economy resource.

Description

Zero-discharge treatment device for mixed industrial sewage membrane concentrated solution

Technical Field

The utility model relates to an industry sewage membrane concentrate field of handling especially relates to a mix zero row processing apparatus of industry sewage membrane concentrate.

Background

The concentrated solution is sewage generated at the membrane concentrated water side when the sewage is treated by MBR + NF + RO. The concentrated solution has poor biodegradability and high salt content, and the concentrated solution cannot be treated by a conventional sewage treatment system. The existing concentrated solution treatment method is to carry out treatment on the concentrated solution by spraying the concentrated solution back to the incinerator, but the large amount of concentrated solution sprayed back to the incinerator can reduce the furnace temperature, influence the generated energy and corrode a hearth.

Disclosure of Invention

In order to solve the problems provided in the background art, the utility model discloses a zero discharge treatment system for mixed industrial sewage membrane concentrated solution, which is characterized by comprising a softening system, a DM system, a DTRO system, an MVR system, an incinerator and a first reclaimed water storage device; a second reclaimed water storage device; the NF concentrated solution is input into the DM system after being softened by the softening system; the DM system outputs humic acid and DM permeation liquid; the humic acid is sprayed back to the incinerator; inputting the DM permeation solution into the DTRO system; the RO concentrated solution is input into the DTRO system after being softened by the softening system; the DTRO system outputs DTRO reclaimed water and DTRO concentrated solution; the DTRO reclaimed water is input into the first reclaimed water storage device; inputting the DTRO concentrated solution into the MVR system; the MVR system outputs MVR reclaimed water and MVR concentrated solution; inputting the reclaimed water in the MVR into the second reclaimed water storage device; and spraying the MVR concentrated solution back to the incinerator.

Preferably, the softening system comprises a dosing device and a sedimentation tank; the dosing device is used for dosing the NF concentrated solution and the RO concentrated solution; the sedimentation tank is used for purifying and placing the concentrated solution after dosing.

Preferably, the DM system extracts humic acid with high calorific value in NF concentrated solution, and the humic acid is sprayed back to the incinerator for treatment; the volume of humic acid output by the DM system is 6.0-6.4% of the volume of input NF concentrated solution, and the volume of output DM permeate is 93.6-94.0% of the volume of input NF concentrated solution.

Preferably, the DTRO reclaimed water output by the DTRO system reaches the water quality standard of the water replenishing of an open circulating cooling water system in the urban sewage recycling industrial water quality (GB/T19923-2005); the volume of water in the DTRO output by the DTRO system is 60.0-61.0% of the volume of the sum of the RO concentrated liquid and the DM permeation liquid input into the DTRO system; the volume of the DTRO concentrated solution output by the DTRO system is 39.0-40.0% of the sum of the volumes of the RO concentrated solution and the DM permeation solution input into the DTRO system.

Preferably, the water quality of the water in the MVR output by the MVR system can reach the standard of Table 3 in the pollution control Standard of municipal solid waste landfill (GB 16889-2008); the volume of the water in the MVR output by the MVR system is 95% of the volume of the DTRO concentrated solution input into the MVR system; the volume of the MVR concentrated solution output by the MVR system is 5% of the volume of the DTRO concentrated solution input into the MVR system.

The utility model has the advantages that: the utility model realizes the harmless treatment and zero discharge treatment of the membrane concentrated solution; the utility model discloses the volume of the normal water that produces at the in-process of handling membrane concentrate is 94% -95% of membrane concentrate volume, and the normal water that produces all can be utilized, the water economy resource.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

The parts in the drawings are numbered as follows: a softening system 1; a DM system 2; a DTRO system 3; an MVR system 4; an incinerator 5; a first reclaimed water storage device 6; and a second reclaimed water storage device 7.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the invention can be more easily understood by those skilled in the art, thereby making the scope of the invention more clearly defined.

DM: material membrane separation system.

DTRO: dish tubular reverse osmosis system.

MVR: mechanical vapor recompression system.

MBR, membrane bioreactor.

NF is a nanofiltration membrane system.

RO is a reverse osmosis system.

Example 1

Referring to the attached figure 1, the zero discharge treatment system for the mixed industrial sewage membrane concentrated solution comprises a softening system 1, a DM system 2, a DTRO system 3, an MVR system 4, an incinerator 5 and a first reclaimed water storage device 6; a second reclaimed water storage device 7; the NF concentrated solution is input into the DM system 2 after being softened by the softening system 1; the DM system 2 outputs humic acid and DM permeate; the humic acid is sprayed back to the incinerator 5; the DM permeate is input into the DTRO system 3; the RO concentrated solution is softened by the softening system 1 and then is input into the DTRO system 3; the DTRO system 3 outputs DTRO reclaimed water and DTRO concentrated solution; the DTRO reclaimed water is input into the first reclaimed water storage device 6; the DTRO concentrated solution is input into the MVR system 4; the MVR system 4 outputs MVR reclaimed water and MVR concentrated solution; the reclaimed water in the MVR is input into the second reclaimed water storage device 7; and the MVR concentrated solution is sprayed back to the incinerator 5.

The softening system 1 comprises a dosing device and a sedimentation tank; the dosing device is used for dosing the NF concentrated solution and the RO concentrated solution; the sedimentation tank is used for purifying and placing the concentrated solution after dosing.

The DTRO reclaimed water output by the DTRO system 3 reaches the water supplementing water quality standard of an open type circulating cooling water system in the urban sewage recycling industrial water quality (GB/T19923-2005); the water quality of the MVR reclaimed water output by the MVR system 4 can reach the standard of table 3 of the pollution control standard of a household garbage landfill (GB 16889-2008).

And (3) inputting 625L NF concentrated solution into the DM system 2, wherein the volume of humic acid output by the DM system 2 is 40L, and the volume of DM permeate output by the DM system is 585L.

Inputting 375L of RO concentrated solution and 585L of DM permeate into the DTRO system 3, so that the volume of the DTRO medium water output by the DTRO system 3 is 576L; the volume of the DTRO concentrated solution output by the DTRO system 3 is 384L.

Inputting a DTRO concentrated solution with a volume of 384L into the MVR system 4, wherein the volume of the MVR reclaimed water output by the MVR system 4 is 364.8L; the volume of the MVR concentrated solution output by the MVR system 4 is 19.2L.

The above, only be the preferred embodiment of the present invention, not for limiting the present invention, all the technical matters of the present invention should be included in any slight modification, equivalent replacement and improvement made to the above embodiments by the technical matters of the present invention within the scope of the present invention.

Claims

1. A zero discharge treatment system for mixed industrial sewage membrane concentrated solution is characterized by comprising a softening system (1), a DM system (2), a DTRO system (3), an MVR system (4), an incinerator (5) and a first reclaimed water storage device (6); a second reclaimed water storage device (7); the NF concentrated solution is input into the DM system (2) after being softened by the softening system (1); the DM system (2) outputs humic acid and DM permeate; the humic acid is sprayed back to the incinerator (5); the DM permeate is input into the DTRO system (3); the RO concentrated solution is softened by the softening system (1) and then is input into the DTRO system (3); the DTRO system (3) outputs DTRO reclaimed water and DTRO concentrated solution; the DTRO reclaimed water is input into the first reclaimed water storage device (6); the DTRO concentrated solution is input into the MVR system (4); the MVR system (4) outputs MVR reclaimed water and MVR concentrated solution; the reclaimed water in the MVR is input into the second reclaimed water storage device (7); and the MVR concentrated solution is sprayed back to the incinerator (5).

2. The zero discharge treatment system for mixed industrial wastewater membrane concentrate according to claim 1, wherein the softening system (1) comprises a dosing device and a settling tank; the dosing device is used for dosing the NF concentrated solution and the RO concentrated solution; the sedimentation tank is used for purifying and placing the concentrated solution after dosing.

3. The mixed industrial sewage membrane concentrated solution zero discharge treatment system according to claim 1, wherein the DM system (2) extracts humic acid with high calorific value from NF concentrated solution and sprays the humic acid back to the incinerator (5) for treatment; the volume of humic acid output by the DM system (2) is 6.0-6.4% of the volume of input NF concentrated solution, and the volume of output DM permeate is 93.6-94.0% of the volume of input NF concentrated solution.

4. The mixed industrial sewage membrane concentrated solution zero discharge treatment system as claimed in claim 1, wherein the DTRO reclaimed water output by the DTRO system (3) meets the water quality standard of open circulating cooling water system in the quality of municipal sewage recycling industrial water (GB/T19923-2005); the volume of water in the DTRO output by the DTRO system (3) is 60.0-61.0% of the volume of the RO concentrated liquid and DM permeation liquid which are input into the DTRO system (3); the volume of the DTRO concentrated solution output by the DTRO system (3) is 39.0-40.0% of the volume of the RO concentrated solution and the DM permeation solution input into the DTRO system (3).

5. The mixed industrial sewage membrane concentrated solution zero discharge treatment system according to claim 1, wherein the water quality of the MVR reclaimed water output by the MVR system (4) can reach the standard of Table 3 of the pollution control Standard of municipal solid waste landfill (GB 16889-2008); the volume of the water in the MVR output by the MVR system (4) is 95% of the volume of the DTRO concentrated solution input into the MVR system (4); the volume of the MVR concentrated solution output by the MVR system (4) is 5% of the volume of the DTRO concentrated solution input into the MVR system (4).