Method for anerobic aerobic granular sludge treating high concentration waste water from paper-making method tobacco slice production

A granular sludge, anaerobic and aerobic technology, applied in the field of water treatment, can solve the problem of wastewater not meeting the discharge standards, and achieve the effects of enhanced ability to accumulate microorganisms, low operating costs, and less sludge.

Inactive Publication Date: 2009-08-12
SOUTH CHINA UNIV OF TECH +2
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  • Summary
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AI Technical Summary

Problems solved by technology

If simple physicochemical coagulation and aerobic biochemical technologies are still used, wastewater treatment cannot meet the discharge standards

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Tobacco flake waste water from papermaking process is treated with the technical solution of the present invention. The influent water quality index is as follows. The waste water first passes through the drum sieve to cut off the smaller floating matter and suspended matter in the sewage, and reclaims useful slurry. The drum sieve screen is 50 head. Then it flows into the adjustment tank by itself for the balance adjustment of water quality and water volume, and is lifted into the HWP type high-efficiency coagulation purifier of papermaking wastewater by pump, and polyaluminum is added to the suction port of the pump, and polypropylene is pumped into the reaction zone of the purifier with a chemical pump. Amide, through flocculation and adsorption to remove insoluble organic matter in wastewater such as suspended matter and colloidal matter, based on the volume of wastewater to be treated, the addition amount of polyaluminum and polyacrylamide (PAM) for flocculation tre...

Embodiment 2

[0029]Tobacco flake waste water from papermaking process is treated with the technical solution of the present invention. The influent water quality index is as follows. The waste water first passes through the drum sieve to cut off the smaller floating matter and suspended matter in the sewage, and reclaims useful slurry. The drum sieve screen is 50 head. Then it flows into the adjustment tank by itself for the balanced adjustment of water quality and water volume, and is pumped into the papermaking wastewater HWP high-efficiency coagulation purifier prepared by the Paper Engineering Center of South China University of Technology. Add polyaluminum to the suction port of the pump, and the reaction in the purifier The district uses a chemical pump to pump polyacrylamide, and removes insoluble organic matter in wastewater such as suspended matter and colloidal matter through flocculation and adsorption. The amount of polyaluminum and polyacrylamide (PAM) added for flocculation tr...

Embodiment 3

[0039] Tobacco flake waste water from papermaking process is treated with the technical solution of the present invention. The influent water quality index is as follows. The waste water first passes through the drum sieve to cut off the smaller floating matter and suspended matter in the sewage, and reclaims useful slurry. The drum sieve screen is 50 head. Then it flows into the adjustment pool by itself for the balanced adjustment of water quality and water volume, and is pumped into the papermaking wastewater HWP high-efficiency coagulation purifier prepared by the Paper Engineering Center of South China University of Technology. Use a chemical pump to pump polyacrylamide, and remove insoluble organic matter in wastewater such as suspended matter and colloidal matter through flocculation and adsorption. L, residence time: 1.5 hours. 30% of the effluent from coagulation pretreatment is reused in the material preparation and cooking extraction stages of the flake process, an...

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Abstract

The invention discloses a method for treating high-concentration paper-making tobacco flake wastewater by anaerobic and aerobic granular sludge. The method includes steps such as coagulation pretreatment, anaerobic degradation, aerobic treatment, and decolorization treatment, wherein the anaerobic degradation is that the wastewater after coagulation treatment is pumped into an anaerobic composite reactor for degradation treatment, and the sludge in the anaerobic composite reactor The concentration is 30-40g / L, the COD load is 12-18kg COD / m3.d, and the temperature is 35-37°C; the aerobic treatment is treated by intermittent aerobic granular sludge method: water inflow for 1 hour, microporous aeration The tube aeration is 8-16 hours, the sludge concentration in the reactor is 7-12g / L, and the COD load is 1.2-1.5kg / (m3.d). The invention realizes the granulation of sludge in the anaerobic and aerobic reaction systems respectively, does not require an additional settling tank, reduces the area occupied by the reactor and the discharge of excess sludge, and finally treats the effluent to meet the national first-class discharge standard.

Description

technical field [0001] The invention relates to papermaking wastewater treatment, in particular to a method for treating papermaking tobacco flake wastewater by using an anaerobic and aerobic granular sludge combined process, and belongs to the technical field of water treatment. Background technique [0002] Tobacco flakes produced by the papermaking method use “waste” such as tobacco stems, shredded tobacco flakes, and tobacco dust produced in the process of rebaking tobacco leaves and cigarette production as the main raw materials, together with a small amount of “skeleton” fiber raw materials, which are extracted , Grinding, molding and backfilling processes to produce tobacco sheets, which have many advantages such as reducing cigarette costs, saving raw material consumption, reusing resources, etc., reducing raw material consumption in the tobacco industry, reducing production costs and even improving product output and quality. is of great significance. [0003] Toba...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F1/56C02F3/30
Inventor 陈元彩李友明陈中豪
Owner SOUTH CHINA UNIV OF TECH
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