CN102847410A

CN102847410A - Combined treatment method for multiple phase state catering lampblack

Info

Publication number: CN102847410A
Application number: CN2012103738954A
Authority: CN
Inventors: 廖雷; 周江喜; 杨威; 严凯
Original assignee: Guilin University of Technology
Current assignee: Guilin University of Technology
Priority date: 2012-10-04
Filing date: 2012-10-04
Publication date: 2013-01-02

Abstract

The invention discloses a combined treatment method for multiple phase state catering lampblack. Lampblack exhaust gas enters an active sludge pool in a self-activating washing mode, liquid and solid oil pollutants are firstly eluted from the gas through adsorption, intercepting and colliding effect of active sludge and then enter the surface of the active sludge to be in biochemical reaction with microorganism in the sludge to generate micromolecule substances, and degradation-resistant matters and metabolism products of the microorganism together form the remaining sludge to be discharged; the lampblack performed with the elution treatment enters a charcoal filler adsorption bed, and gas-state smelly lampblack volatile pollutants are contacted with the surface of charcoal and enter a charcoal gap channel through a gas-solid transfer process to be adsorbed on the inner surface of the gap channel and separated from the gas; and the charcoal can be replaced after saturation, and the saturated charcoal can serve as fuel or be directly buried. The removing rate of the liquid and solid oil pollutants in the lampblack can reach 95%, the removing rate of the gas-state smelly lampblack volatile pollutants reaches 90%, and the combined treatment method for multiple phase state catering lampblack is high in impact resisting strength, low in energy consumption, high in cost performance, convenient to install and debug, safe in operation and free of secondary pollution.

Description

A kind of combination treatment method of multi phase state kitchen fumes

Technical field

The present invention relates to a kind of combination treatment method of multi phase state kitchen fumes---the food and drink kitchen other cooking-fume discharging that will comprise gas, liquid-solid three-phase passes into first in the activated sludge sink that fills after the domestication and carries out the self-excitation washing, and then the packed tower through loading adsorbent charcoal carries out adsorption treatment, the method for the gas-solid of realization oil smoke, gas-liquid, gas gas multi phase state separated from contaminants.

Background technology

China's edible oil consumption figure reaches 1,900 ten thousand tons, and these oil will produce a large amount of oil smoke in cooking process.At present China's family kitchen owning amount has reached more than 3.5 hundred million, and just with the speed increase in annual 1300 ten thousand kitchens.Register at home about 100,000 of lodging type hotel and catering trade legal entity, about 460.9 ten thousand of Enterprise Staff dining room, about 100,000 of various kinds of schools dining room, the oil smoke of discharging every day, the important source that has become atmosphere pollution can not be ignored.At present, fume pollution has become one of focus of city dweller's environmental protection complaint, has accounted for more than 40% of total environmental protection complaint.Therefore, effectively administer kitchen fumes and pollute improving urban air-quality, protection resident physical and mental health all is of great significance.

Oil smoke is the product that edible oil and food form under heating condition, mainly decomposed by the thermal oxide of edible oil and the contained lipid of food itself, the aerosol that the intermediate product of rice Maillard reactions and end-product and their interactional secondary response thing formation exist with solid-state, liquid state and gaseous state occurs in the materials such as carbohydrate, oil gas, protein, amino acid in the food.At present, the main industrial ventilation dedusting technology that adopts is processed oil smoke on the market, main Types has mechanical type, filtering type, electrostatic, wet type, combined type etc., and low, the instant effect of these technological development costs has been obtained certain effect aspect the pollution of smoke particle thing in the control kitchen fumes.But because the solid, liquid pollutants from cooking fume viscosity that is captured down is large, strong adhesion, cause separation equipment and line clogging, resistance increases, the frequent filtrate, cause the action time of equipment continuous effective short, safeguard that cleaning and running expense are high, be easy to the difficult problem such as secondary pollution, and these technology are generally not good to escaping gas treatment effect in the oil smoke; Abroad take thermal oxide burning method and catalytic purification method as main physico-chemical process because be difficult to the decrease cost, the solution safety issue restricts it and applies.Therefore, comprise the characteristics of the target contaminant of multi phase state according to oil smoke, use new waste gas pollution control and treatment theoretical principle, the special-purpose oil smoke processing technique of development of new is of great practical significance.

Summary of the invention

The method that the purpose of this invention is to provide a kind of activated sludge self-excitation washing and wood charcoal adsorption combined treatment multi phase state kitchen fumes.

Concrete steps are:

(1) activated sludge soil washing: oil flue waste gas is entered activated sludge tank with the self-excitation mode of washing, liquid-solid oil content pollutant at first enters the activated sludge surface by activated sludge absorption, interception and collision effect wash-out from gas, then with mud in microorganism play biochemical reaction and generate small-molecule substance (CO ₂, H ₂O etc.), some difficult degradation things form the excess sludge discharge with microbial metabolic products.

(2) wood charcoal adsorption effect: the oil smoke of processing through step (1) wash-out enters charcoal filling adsorption bed again, gaseous state peculiar smell oil smoke volatile contaminant and charcoal Surface Contact enter the charcoal interstitial channels and are adsorbed that to be adsorbed on the interstitial channels inner surface separated from the gas through the gas-solid mass transport process; Fuel or direct landfill disposal are done in the saturated rear replacing of wood charcoal adsorption.

The present invention is excellent in cushion effect, energy consumption is low, cost performance is high, installation and debugging are convenient, security of operation and non-secondary pollution.

The specific embodiment

Embodiment:

(1) certain Forum on College Eating-room oil flue waste gas is entered activated sludge tank with the self-excitation mode of washing, liquid-solid oil content pollutant at first enters the activated sludge surface by activated sludge absorption, interception and collision effect wash-out from gas, then with mud in microorganism play biochemical reaction and generate small-molecule substance (CO ₂, H ₂O etc.), some difficult degradation things form the excess sludge discharge with microbial metabolic products;

(2) oil smoke of processing through step (1) wash-out enters charcoal filling adsorption bed again, gaseous state peculiar smell oil smoke volatile contaminant and charcoal Surface Contact enter the charcoal interstitial channels and are adsorbed that to be adsorbed on the interstitial channels inner surface separated from the gas through the gas-solid mass transport process; Fuel or direct landfill disposal are done in the saturated rear replacing of wood charcoal adsorption;

The dining room effluxes kitchen fumes total oils concentration at 4-15 mg/m ³, reaching 95% through the solid oil content pollutants removal rate of this combined method handling oil tobacco juice, gaseous state peculiar smell oil smoke volatile contaminant clearance reaches 90%.

Claims

1. the processing method of a kitchen fumes is characterized in that concrete steps are:

(1) oil flue waste gas is entered activated sludge tank with the self-excitation mode of washing, liquid-solid oil content pollutant at first enters the activated sludge surface by activated sludge absorption, interception and collision effect wash-out from gas, then with mud in microorganism play biochemical reaction and generate small-molecule substance, some difficult degradation things form excess sludge with microbial metabolic products and discharge;

(2) oil smoke of processing through step (1) wash-out enters charcoal filling adsorption bed again, gaseous state peculiar smell oil smoke volatile contaminant and charcoal Surface Contact enter the charcoal interstitial channels and are adsorbed that to be adsorbed on the interstitial channels inner surface separated from the gas through the gas-solid mass transport process; Fuel or direct landfill disposal are done in the saturated rear replacing of wood charcoal adsorption.