Unlock instant, AI-driven research and patent intelligence for your innovation.

Advanced treatment process for packaging paper and specialty paper mixed wastewater

A technology of mixed wastewater and advanced treatment, which is applied in the process of wastewater treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. It can solve the problem of poor removal effect and achieve long service life and operation Low cost and good treatment effect

Pending Publication Date: 2022-07-15
SHANDONG RENFENG SPECIAL MATERIALS
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent improves the removal rate of SS, COD, BOD, AOX, lignin and chroma in wastewater by comprehensive wastewater treatment, but the removal effect is still not very good

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Advanced treatment process for packaging paper and specialty paper mixed wastewater
  • Advanced treatment process for packaging paper and specialty paper mixed wastewater
  • Advanced treatment process for packaging paper and specialty paper mixed wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0153] like figure 1 As shown in the above, the advanced treatment process of the mixed waste water of the packaging paper and special paper, the device adopted includes the water inlet pipeline, the water inlet pipeline and the inclined filter screen 1, the primary sedimentation tank 2, the adjustment tank 3, the pre-acidification tank 6, The anaerobic reactor 7, the anoxic tank 8, the aerobic tank 9, the secondary sedimentation tank 10, the active sand filter tank 11 and the recycling water tank 12 are connected in sequence through pipelines. Among them, a heat exchanger 4 is arranged between the conditioning tank 3 and the pre-acidification tank 6, and the heat exchanger 4 is used for heat exchange and cooling of the effluent of the conditioning tank 3, and the heat exchanger 4 adopts a plate heat exchanger. The heat exchanger 4 is connected to a cooling pool 5 , and the cooling pool 5 provides cooling medium for the heat exchanger 4 . The device also includes an accident ...

Embodiment 2-5

[0165] The described packaging paper and special paper mixed waste water advanced treatment process and the adopted device are the same as in Example 1, except that the waste water index is different, see the following table for details.

[0166] 1.1 Slant filter inlet

[0167] TSS pH SCOD-oblique filter flow temperature mg / l mg / l m 3 / d

℃ Example 1 386.00 6.41 3529.00 7987.00 30.00 Example 2 423.00 6.32 3735.00 7228.00 30.00 Example 3 362.00 6.31 3425.00 8014.00 29.00 Example 4 360.00 6.46 3098.00 7297.00 28.00 Example 5 360.00 6.28 3450.00 6975.00 28.00

[0168] 1.2 Primary sedimentation tank (diameter 25m, height 4.5m)

[0169] SCOD TSS pH temperature VFA Alk TSS total nitrogen acidity mg / l mg / l ℃ meq / l meq / l mg / L mg / L ％ Example 1 2915.00 214.00 6.65 28.00 20.09 6.50 6082.00 10.56 47.55 Example 2 2700.00 293.00 6....

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of papermaking wastewater treatment, and particularly relates to an advanced treatment process for packaging paper and specialty paper mixed wastewater. The device comprises a water inlet pipeline, wherein the water inlet pipeline is sequentially connected with an inclined filter screen, a primary sedimentation tank, a regulating tank, a pre-acidification tank, an anaerobic reactor, an anoxic tank, an aerobic tank, a secondary sedimentation tank, an active sand filter tank and a reuse water tank; the process comprises the following steps: 1) treating wastewater by an inclined filter screen and then automatically flowing into a primary sedimentation tank; (2) enabling effluent of the primary sedimentation tank to automatically flow into an adjusting tank; (3) enabling effluent of the regulating tank to enter a pre-acidification tank; (4) enabling effluent of the pre-acidification pool to enter an anaerobic reactor for anaerobic treatment; (5) enabling effluent of the anaerobic reactor to enter an anoxic tank; (6) enabling effluent of the anoxic tank to enter an aerobic tank; (7) enabling effluent of the aerobic tank to enter a secondary sedimentation tank; (8) enabling effluent of the secondary sedimentation tank to enter an active sand filter tank; and 9) enabling the effluent of the active sand filter to enter a reuse water tank. The wastewater treatment effect is good, and COD, BOD and TSS in the wastewater can be reduced to a relatively low level.

Description

technical field [0001] The invention belongs to the technical field of papermaking wastewater treatment, and in particular relates to an advanced treatment process for mixed wastewater of packaging paper and special paper. Background technique [0002] During the production of packaging paper and specialty paper, a large amount of wastewater is generated. This type of wastewater generally has the characteristics of high COD, high BOD and high TSS. Such sewage is generally treated by physical methods or biological methods. The physical methods are mainly air flotation and sedimentation, and the biological methods are mainly aerobic and anaerobic. Current treatment methods cannot reduce COD, BOD and TSS to a relatively low level. [0003] For example, Chinese patent CN 201910087581.X discloses a papermaking wastewater treatment process. It includes the following treatment steps: Step 1: The wastewater is sent to the oxidation pond, and the anoxic selector, the oxidation pon...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C02F9/14C02F103/28
CPCC02F9/00C02F1/001C02F1/66C02F3/02C02F3/28C02F3/302C02F2001/007C02F2103/28
Inventor 宋佃凤刘雷张站强巩宜杰乔微微巩朋李辉
Owner SHANDONG RENFENG SPECIAL MATERIALS