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EPS(Expanded Poly Styrol) wastewater treatment system

A wastewater treatment system and water inlet technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, aerobic and anaerobic process treatment, etc., can solve the problem of high operating costs and large investment in membrane bioreactors and other problems, to achieve the effect of saving power, low investment cost and stable operation

Inactive Publication Date: 2012-04-18
邵志军
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the membrane bioreactor (MBR) and RO system used in this process requires a large investment and high operating costs. Based on the treatment of 1 ton of wastewater, the operating cost needs to be 5 to 6 yuan.

Method used

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  • EPS(Expanded Poly Styrol) wastewater treatment system
  • EPS(Expanded Poly Styrol) wastewater treatment system
  • EPS(Expanded Poly Styrol) wastewater treatment system

Examples

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Embodiment 1

[0018] An EPS wastewater treatment system, the system includes a primary sedimentation tank group, a regulating tank 6, a pulse anaerobic reactor 7, a contact oxidation tank, a middle sedimentation tank 9, an intermediate tank 12, a coagulation sedimentation tower 13, and a reclaimed water reuse tank 14. Discharge pool 15. The primary settling tank group is sequentially composed of a vibrating screen 1, a vertical flow settling tank 2, an advective flow settling tank 3, a mixed flow reaction tank 4 and a radial flow settling tank 5 connected in series through pipelines.

[0019] The water inlet of the vibrating screen 1 is connected to the EPS production wastewater drainage pipe, the outlet of the vibrating screen 1 is connected to the water inlet of the vertical flow sedimentation tank 2, the water outlet of the vertical flow sedimentation tank 2 is connected to the water inlet of the advection sedimentation tank 3, and the outlet of the advection sedimentation tank 3 is conne...

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Abstract

The invention belongs to the field of environmental protection, and discloses an EPS(Expanded Poly Styrol) wastewater treatment system. The system comprises a primary sedimentation tank group, a regulating tank, an anaerobic tank, a contact oxidation tank, a mid-sedimentation tank, a middle tank, a coagulating sedimentation tower, a middle water recycling tank and a discharge tank. According to the invention, the existing mature wastewater treatment equipment is optimally recombined and improved, the process flow is simple, and under the condition of not using reverse osmosis membrane treatment equipment, the EPS wastewater treatment system has good effects on removing organic matter, suspended matter and phosphorus, thereby effectively solving the problem of advanced EPS wastewater treatment. The wastewater recycling rate reaches 50%, the contents of COD(Chemical Oxygen Demand), BOD(Biochemical Oxygen Demand), SS(Suspended Solids), phosphorus and the like in the recycled water all reach the water recycling standards in the EPS industry, the contradiction between enterprise development and pollutant emission is solved, and the aims of energy saving and emission reduction of enterprises are realized; and the cost of investment of the whole wastewater treatment system disclosed by the invention is low, and the operating cost for treating 1 ton wastewater is only 2 yuan, which is 1 / 3 of that of the existing printing and dyeing wastewater recycling process.

Description

technical field [0001] The invention belongs to the field of environmental protection and relates to an EPS wastewater treatment system. Background technique [0002] EPS (expandable polystyrene), commonly known as polystyrene and styrene-based copolymer, is a mixture of resin, physical blowing agent and other additives. EPS can be used to make various products such as disposable beverage cups, energy-absorbing automobile shock absorbers or heat insulation materials. In the polystyrene production process, a large amount of waste water will be produced, including the production mother liquor and polystyrene particle washing water. The waste water is dominated by anionic surfactant sodium dodecylbenzene sulfonate (LAS) and contains a small amount of aliphatic organic matter Compared with styrene monomer, the wastewater has poor biodegradability and has certain toxicity. If it is discharged into the water body without effective treatment, it will have a serious impact on the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F3/30
Inventor 邵志军李洪芳
Owner 邵志军
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