CN203065327U - Resource utilization centralized treatment system for dewatered sludge and waste grease from restaurant garbage of sewage treatment plant - Google Patents

Abstract

The utility model relates to a resource utilization centralized treatment system for dewatered sludge and waste grease from restaurant garbage of a sewage treatment plant. The resource utilization centralized treatment system comprises a sludge storage tank and a storage tank for waste grease from restaurant garbage, wherein a condensation conditioner feeding device is connected at an inlet of the sludge storage tank, a stirring and filter plate compacting device are connected at an outlet of the sludge storage tank, a dewatering filter chamber is connected below the stirring and filter plate compacting device, the storage tank for waste grease from restaurant garbage is connected with a filter system, a hydration, degumming and stirring tank is connected below the filter system, a dewatering and desulfurizing device is connected below the hydration, degumming and stirring tank, the outlets of the dewatering filter chamber and the dewatering and desulfurizing device are respectively connected with a crushing, mixing and stirring device, a cake pressing device is connected below the crushing, mixing and stirring device, and the outlet of the cake pressing device is connected with a sludge discharging and conveying system. The resource utilization centralized treatment system has the beneficial effects of reducing the treatment cost of sludge, realizing resource utilization, simultaneously processing the waste grease, achieving the purposes of environmental friendliness and waste resource utilization, and providing a feasible way for turning wastes into useful things against a large quantity of sludge and swill-cooked dirty oil in cities.

Description

Sewage work's dewatered sludge and meal kitchen waste oil resource utilization centralized processing system

(1) technical field

The utility model relates to the green technology equipment of a kind of Pollutant Treatment and recycling, particularly a kind of sewage work's dewatered sludge and meal kitchen waste oil resource utilization centralized processing system.

(2) background technology

Along with the quantity discharged of urban industry waste water and sanitary sewage is increasing, in the municipal sewage treatment process, certainly lead to a large amount of mud, the disposal of mud is the important step of sewage work's operational management.The mud that the meets environmental requirement finally mode of dissolving has multiplely, comprises sanitary landfill, soil utilization, burning, manufacturing building materials etc.All disposal are all because of mud special physical behavior and different in kind (high-moisture percentage, pathogen contamination etc.), and different disposal difficulty is arranged: 1. mud carries out sanitary landfill, may cause fill up body deformability or landslide, biogas or leachate collection pipeline stop up, can't mechanical ramming, cause landfill yard potential safety hazard, the lost of life etc.2. the soil utilization of mud is disposed and is referred to that mud is used as organic fertilizer, medium soil etc. and is used for fields such as agricultural, forest flower, afforestation and sand ground improvement.Except the sales difficulty that as fertilizer sources may relate to, the soil utilization of mud may be difficult to accept because of factors such as high-moisture percentage, pathogen contamination, foul smell, heavy metal accumulations.3. the incineration disposal of mud refers to that mud carries out the process that calorific value utilizes at special-purpose, non-special-purpose incinerator, also comprises the final harmlessness disposing that burns the back lime-ash.Mud brings a difficult problem for special burning facility because water ratio height, reduction furnace temperature, flying dust ratio height, need add auxiliary fuel, secondary pollution etc.4. sludge building material is disposed and is referred in general construction production equipment such as processing units such as cement, brickmaking, the mode of carrying out the sludge calorific value utilization and the lime-ash that produces being carried out the material utilization.

The sludge disposal route be chosen in nutrient or calorific value utilizes this two kinds of resource utilization forms.Mud has the organism of high level, can be used as nutrient is absorbed by the soil (because most of sewage works processing trade effluent contains venomous injurant, this method does not generally adopt), also can produce heat by the mode of direct (as burning) or indirect (landfill collection biogas) and be used.

There is certain degree of difficulty in the technology of utilizing the contained organic compound combustion of mud to discharge heat energy, and key is its water ratio.Sewage work's untreated sludge is because water accounts more than 90%, and the calorific value of self is not enough to keep its auto-combustion, for the burning of satisfying mud self needs further dehydration.Before sludge dewatering for dehydrating effect is promoted, and can effectively improve subsequent disposal, general mud all needs to add earlier the amendment that condenses, this purpose is to change the mud structure, make mud have enough rigidity because condensing mutually, separated sludge and water filter the water ratio that removes moisture reduction mud in the mud thereby see through DeviceMode more fast.

Sludge dewatering mainly is to remove moisture to reduce the volume of mud, sludge characteristics is the main reason that influences the sludge dewatering ability, dosing is handled and all can be changed sludge characteristics before sludge treatment mode, source and the dehydration, and the pH value of granular size, surface charge, compressibility and mud, temperature etc. also influence the dehydration of mud in addition.A plurality of factors of balance influence sludge dewatering are determined best dehydration point, and the equipment that collocation design is good can be brought into play best dehydrating effect.

It is people's common names for all kinds of poor quality oils in life that meal kitchen waste oil is commonly called as " sewer oil ", is to fish for from the trench oil trap of catering trade, and the grease through simple technology is extracted claims hogwash fat again.Chinese Consumer's is by the true deep puzzlement of sewer oil backflow dining table.The acid value of sewer oil, carbonyl valency be the edible oil hygienic standard of national regulation head and shoulders above; Contain a large amount of free fatty acidies, and in removal process, easily receive heavy metal contaminations such as arsenic, lead.Test is fixed factually, and taking in sewer oil for a long time can damage human body, causes dysplasia, enteritis, and the enlargement of liver, the heart and kidney, and fatty liver etc.In addition, the flavus of the contaminated generation of sewer oil not only easily makes the people suffer from liver cancer, also may cause cancer of the stomach, carcinoma of the pancreas, kidney, the rectum cancer, mammary cancer, and position canceration such as ovary, small intestine.

Sewer oil is a kind of grease that becomes sour of severe overweight, also be a kind of resource of reusable edible simultaneously, handle as sewer oil being carried out turning sludge into fuel, can not only alleviate China's power supply problem of shortage, and can alleviate it to the pollution of environment, will have a tremendous social and economic benefits.

(3) summary of the invention

The utility model is in order to remedy the deficiencies in the prior art, provides that a kind of technology is simple, easy to operate, cost is low, sewage work's dewatered sludge of energy-conserving and environment-protective and meal kitchen waste oil resource utilization centralized processing system.

The utility model is achieved by the following technical solution:

A kind of sewage work dewatered sludge and meal kitchen waste oil resource utilization centralized processing system, comprise mud storage tank and meal kitchen waste oil storage tank, it is characterized in that: described mud storage tank ingress is connected with the amendment feeding device that condenses, mud storage tank exit is connected with stirs and the filter plate compaction apparatus, stirring and filter plate compaction apparatus below are connected with the dehydration filter chamber, meal kitchen waste oil storage tank is connected with filtering system, the filtering system below is connected with the hydration degum stirred pot, hydration degum stirred pot below is connected with the dehydration sweetener, the dehydration filter chamber is puddled device with fragmentation respectively with dehydration sweetener exit and is connected, fragmentation is puddled the device below and is connected with the cake of press device, and cake of press device exit is connected with mud discharging delivery system.

Described dehydration filter chamber adopts the plate and frame sludge dewatering equipment to filter the moisture that removes in the mud.

The beneficial effects of the utility model are: with sludge of sewage treatment plant and meal kitchen or other flammable waste oil recycling treatment, not only reduce the processing cost of mud, and with its resource utilization, handle waste oil simultaneously, reach the purpose of environmental protection, changing waste into resources; Have bigger economic benefit, also provide a kind of feasible way of making a silk purse out of a sow's ear for city a large amount of mud and sewer oil simultaneously.

(4) description of drawings

Below in conjunction with accompanying drawing the utility model is further described.

Accompanying drawing 1 is structural representation of the present utility model;

Among the figure, 1 mud storage tank, 2 meal kitchen waste oil storage tanks, the 3 amendment feeding devices that condense, 4 stir and the filter plate compaction apparatus, 5 dehydration filter chambers, 6 filtering systems, 7 hydration degum stirred pots, 8 dehydration sweeteners, device is puddled in 9 fragmentations, 10 cake of press devices, 11 mud discharging delivery systems.

(5) embodiment

Accompanying drawing is a kind of specific embodiment of the present utility model.This embodiment comprises mud storage tank 1 and meal kitchen waste oil storage tank 2, mud storage tank 1 ingress is connected with the amendment feeding device 3 that condenses, mud storage tank 1 exit is connected with stirs and filter plate compaction apparatus 4, stirring and filter plate compaction apparatus 4 belows are connected with dehydration filter chamber 5, meal kitchen waste oil storage tank 2 is connected with filtering system 6, filtering system 6 belows are connected with hydration degum stirred pot 7, hydration degum stirred pot 7 belows are connected with dehydration sweetener 8, dehydration filter chamber 5 is puddled device 9 with fragmentation respectively with dehydration sweetener 8 exits and is connected, fragmentation is puddled device 9 belows and is connected with cake of press device 10, and cake of press device 10 exits are connected with mud discharging delivery system 11.Dehydration filter chamber 5 adopts the plate and frame sludge dewatering equipment to filter the moisture that removes in the mud.

Adopt sewage work of the present utility model dewatered sludge and meal kitchen waste oil resource utilization centralized processing system, at first carry out sludge dewatering treatment, the amendment that will condense earlier adds in the mud of mud storage tank 1 by the amendment feeding device 3 that condenses, utilize the whipping appts of stirring and filter plate compaction apparatus 4 to mix, make mud have enough rigidity because condensing mutually, separated sludge and water fast, thus transmitting plate frame sludge dewatering equipment filters and removes that moisture reduces moisture percentage in sewage sludge to 50% in the mud again.Mainly be divided into four steps and carry out filter dehydration:

(1) filter plate compacting

By oil pressure unit system drive oil cylinder, several piece filter plate extruding contracting together to closely knit fully, formed the mud of filtration chamber's preparation fully closely and enters.

(2) mud enters filter chamber

By pneumatic diaphragm pump thickened sludge is squeezed in the dehydration filter chamber 5, utilized the water exhaust system of filter plate that a large amount of interstitial waters are leached, the obstruct of dehydration filter chamber 5 is stranded in the dehydration filter chamber 5 mud, reaches up to dehydration filter chamber 5 pressure to set in the pressure.

(3) air blowing catches up with watery diarrhea to press

When the pressure of dehydration in the filter chamber 5 reaches when setting pressure, utilize pressure switch control to order about scavenger system and catch up with water, force to reduce and stays moisture percentage in sewage sludge in dehydration filter chamber 5, finishing blows catches up with water effect and bleed off inlet pressure in order to safety.

(4) die sinking system

When scavenger system was finished, the expression filter plate can carry out the action of die sinking, can carry out monolithic vibrations one by one this moment and draw back the die sinking action of filter plate.

Final mud is pressed into the mud cake of water ratio about 50%.

Secondly handle meal kitchen waste oil:

(1) will eat waste oil in the kitchen waste oil storage tank 2 by filtering system 6 with the Impurity removal in the waste oil, in order to avoid it is detained the carrying out that wherein influences subsequent reactions.By the strainer filtering removal of impurities, adopt 3 step filtration methods, the filter screen one-level is littler than one-level.

(2) hydration degum carries out in hydration degum stirred pot 7, utilize the wetting ability of peptized impurities such as phosphatide, with aqueous electrolyte liquids such as a certain amount of hot water or diluted alkaline, salt, phosphoric acid, under agitation add in the crude oil of heat, peptized impurities suction flocking settling is wherein separated.

(3) water in the waste oil must be except clean, if hydrolysis reaction then takes place under the effect of acid or alkaline catalysts Water in oil easily.In dehydration sweetener 8, by oil being heated and controlling about 105 ℃, till not having the water vapour bubbling, stop heating then, this stage is also played the effect of deodorization simultaneously.

(4) if sulphur content is higher, generate hydrogen sulfide during burning, produce stink, need carry out the desulfurization pre-treatment.In dehydration sweetener 8, utilize a kind of hydrogenation activity very low equally, almost do not have the patent sorbent material of cracking activity, sulphur atom in the absorption sulfide, make it to be retained on the sorbent material, the hydrocarbon structure of sulfide part is then in the return logistics, thereby realizes sweetening process.

With the composite fuels by a certain percentage of the waste oil after handling.

At last, the mud cake that makes and composite fuels are dropped into fragmentation puddle in the device 9, the broken and composite fuels by a certain percentage of mud cake is finally made the fuel cake of diameter 15cm through cake of press device 10, is transported by mud discharging delivery system 11 to get final product.

Claims (2)

1. sewage work's dewatered sludge and meal kitchen waste oil resource utilization centralized processing system, comprise mud storage tank (1) and meal kitchen waste oil storage tank (2), it is characterized in that: described mud storage tank (1) ingress is connected with the amendment feeding device (3) that condenses, mud storage tank (1) exit is connected with stirs and filter plate compaction apparatus (4), stirring and filter plate compaction apparatus (4) below are connected with dehydration filter chamber (5), meal kitchen waste oil storage tank (2) is connected with filtering system (6), filtering system (6) below is connected with hydration degum stirred pot (7), hydration degum stirred pot (7) below is connected with dehydration sweetener (8), dehydration filter chamber (5) is puddled device (9) with fragmentation respectively with dehydration sweetener (8) exit and is connected, fragmentation is puddled device (9) below and is connected with cake of press device (10), and cake of press device (10) exit is connected with mud discharging delivery system (11).

2. sewage work according to claim 1 dewatered sludge and meal kitchen waste oil resource utilization centralized processing system, it is characterized in that: described dehydration filter chamber (5) adopts the plate and frame sludge dewatering equipment to filter the moisture that removes in the mud.

Images