Composite advanced sewage treatment method

A technology for advanced treatment and sewage, applied in the field of water treatment, can solve problems such as foul smell, lack of oxygen, endangering the ecological environment, etc., and achieve the effects of strong adsorption of positive charges, good purification effect, and good water purification effect

Active Publication Date: 2017-10-10
金华雅帅纺织有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The organic matter in the composite sewage leads to the lack of oxygen in the water quality through biodegradation, and the pollution of the water quality can lead to the death of aquatic organisms, thereby emitting a foul smell and destroying the water environment; 2) Ecological pollution
High-salinity sewage directly leads to an increase in the salinity of river water, which brings more and more serious pollution to soil, surface water, and groundwater, endangering the ecological environment; 3) toxic hazards

Method used

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Experimental program
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Effect test

Embodiment 1

[0029] A kind of advanced treatment method of composite sewage, the method comprises the following steps:

[0030]Step 1. Flocculation and sedimentation: the composite sewage is treated by anaerobic expanded granular sludge bed (EGSB)-aerobic membrane bioreactor (MBR) combined process, the influent water volume is 500L / h, water quality: COD 867mg / L , ammonia nitrogen 305mg / L, suspended matter 206mg / L, conductivity 2900us / cm, heavy metal arsenic 2.4mg / L, cadmium 0.1mg / L, chromium 3mg / L, lead 1.2mg / L, mercury 0.13mg / L, copper 27mg / L, manganese 15mg / L, pass into the flocculation sedimentation tank, put 0.3kg flocculant in per ton of sewage at the water inlet, this flocculant comprises each component of following parts by weight: polyferric sulfate 8 parts, bentonite 10 parts, 5 parts of diatomite, 15 parts of chitosan, 2000 parts of deionized water, after clarification, put one or more of NaOH solid, soda ash solid, quicklime for chemical precipitation;

[0031] Step 2. Media f...

Embodiment 2

[0037] A method for advanced treatment of composite sewage, the method comprising the following steps:

[0038] Step 1. Flocculation and sedimentation: the composite sewage is treated by anaerobic expanded granular sludge bed (EGSB)-aerobic membrane bioreactor (MBR) combined process, the influent water volume is 500L / h, and the water quality: COD 1020mg / L , ammonia nitrogen 316mg / L, suspended matter 199mg / L, conductivity 3000us / cm, heavy metal arsenic 1.3mg / L, cadmium 1.0mg / L, chromium 1.8mg / L, lead 0.9mg / L, mercury 0.2mg / L, copper 34mg / L, manganese 6mg / L, pass into the flocculation sedimentation tank, put 0.3kg flocculant per ton of sewage at the water inlet, the flocculant includes the following components in parts by weight: 15 parts of polyferric sulfate, 15 parts of bentonite , 7 parts of diatomite, 23 parts of chitosan, 2500 parts of deionized water, after clarification, put one or more of NaOH solid, soda ash solid, quicklime for chemical precipitation;

[0039] Step 2...

Embodiment 3

[0045] A method for advanced treatment of composite sewage, the method comprising the following steps:

[0046] Step 1. Flocculation and sedimentation: the composite sewage is treated by anaerobic expanded granular sludge bed (EGSB)-aerobic membrane bioreactor (MBR) combined process, the influent water volume is 500L / h, water quality: COD 1153mg / L , ammonia nitrogen 347mg / L, suspended matter 208mg / L, conductivity 3150us / cm, heavy metal arsenic 4.7mg / L, cadmium 0.5mg / L, chromium 4.4mg / L, lead 1.0mg / L, mercury 0.19mg / L, copper 22mg / L, manganese 7mg / L, pass into the flocculation sedimentation tank, put 0.3kg flocculant per ton of sewage at the water inlet, the flocculant includes the following components in parts by weight: 15 parts of polyferric sulfate, 15 parts of bentonite , 7 parts of diatomite, 23 parts of chitosan, 2500 parts of deionized water, after clarification, put one or more of NaOH solid, soda ash solid, quicklime for chemical precipitation;

[0047] Step 2. Media...

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Abstract

The invention discloses a composite advanced sewage treatment method. The method comprises the following steps: 1, performing flocculation and precipitation; 2, performing medium filtration; 3, performing ultraviolet and ozone pretreatment; 4, performing ultrafiltration membrane treatment; 5, performing heavy metal ion enrichment and removal; and 6, performing reverse osmosis treatment. According to the composite advanced sewage treatment method provided by the invention, most of the impurities and organic matters are adsorbed by a flocculating agent with excellent performance, the organic matters are directly oxidized into volatile gases to escape by adopting an ultraviolet ozone reactor, the heavy metal ions are enriched and adsorbed through electrostatic spinning fibers under the electric field action, and most of the inorganic salts are removed through reverse osmosis. The composite advanced sewage treatment method provided by the invention is simple in operation, high in efficiency and low in cost, secondary pollution is avoided, high-quality recycled water can be obtained, and zero emission of industrial wastewater is realized.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a method for advanced treatment of composite sewage. Background technique [0002] At present, water pollution is one of the problems that China urgently needs to solve. With the continuous increase of industrial production, the discharge of industrial sewage is also becoming more and more serious. A large amount of industrial sewage is directly discharged into the river, which harms the aquatic biological system and seriously affects human life. Composite sewage has the characteristics of high salt content, high organic matter content, complex bacterial population, complex water quality composition, and high scaling tendency, and it is difficult to reuse. The hazards of composite sewage: 1) aerobic hazards. The organic matter in the composite sewage leads to the lack of oxygen in the water quality through biodegradation, and the pollution of the water quality can lead ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/30C02F101/20
CPCC02F1/001C02F1/281C02F1/32C02F1/441C02F1/444C02F1/469C02F1/5245C02F1/5263C02F1/5281C02F1/78C02F3/30C02F9/00C02F2101/20C02F2101/30C02F2201/32C02F2209/08C02F2303/02C02F2303/04C02F2303/14
Inventor 冯婷婷
Owner 金华雅帅纺织有限公司
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