CN104843925A - Joint treatment method for sludge and sewage - Google Patents
Joint treatment method for sludge and sewage Download PDFInfo
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- CN104843925A CN104843925A CN201510254314.9A CN201510254314A CN104843925A CN 104843925 A CN104843925 A CN 104843925A CN 201510254314 A CN201510254314 A CN 201510254314A CN 104843925 A CN104843925 A CN 104843925A
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Abstract
The invention relates to the technical field of wastewater treatment, and particularly discloses a joint treatment method for sludge and sewage. The continuous addition of straws is combined with the addition of carbon powder and iron powder, nanofiltration, ultrafiltration and reverse osmosis technologies are combined, ultrasonic and centrifugal treatment technologies are introduced, and high-temperature decomposition and the treatment of a heat exchanger are combined, so that the energy consumption of the whole process is reduced, and the purification degree of the sewage is higher; in addition, sludge or residues obtained by the purification of the sewage are treated to form green bricks to further obtain more products by the steps of matching, stirring, pressing, baking, calcination, polishing, warehousing and the like after straw addition and grinding, so that the added value of sewage and sludge treatment is increased; moreover, large amounts of straw components can be added, so that the straw components react in a calcination process to reduce the energy consumption of a brick making process, improve the brick making quality and further reduce the sewage and sludge treatment cost.
Description
Technical field
The present invention relates to technical field of waste water processing, especially a kind of mud, sewage combination treatment method.
Background technology
Water pollutions is the day by day serious problem of facing mankind, and China is as the country of water resources relative shortage, and process and the recycling of industrial sewage become the task of top priority.Current sewage decoloring process often uses activated carbon decolorizing method, mineral decoloring method is as bentone adsorbent, redox decoloring method such as ozone, H2O2 and FeSO4 mix decolouring, coagulation decoloration method, inorganic flocculating agent decoloring method is as magnesium oxide, magnesium sulfate decolour, organic floculant decoloring method such as alcoholic acetic acid stearylamine, octadecyl trimethyl ammonium chloride and cetyl pyridinium bromide salt binding method decolouring, and natural polymer and modified material decolouring as the method such as starch and xylogen.But aforesaid method also exists certain limitation and comparatively obvious shortcoming, and as activated carbon decolorizing method, although gac good adsorption performance, non-renewable, sewage decoloring cost is high; And mineral decoloring method good decolorizing effect, but the decolouring cycle is long; Redox decoloring method running cost is high, is unsuitable for extensive use; Flocculation agent decoloring method flocculant usage is comparatively large, and decolorizing effect is not good.Further, need to add a large amount of chemical agents, and the purchase cost of these chemical agents is higher, and then makes to increase the cost of sewage disposal in the method in the above prior art for sewage decoloring process, and the time of process is longer, energy consumption is large; In addition, in the sewage treatment process of prior art, most of technology is only the process made for sewage, and to the process of the mud existed in living environment not enough, and also the technique of sewage and sludge treatment is not carried out combining process.
Moreover, a large amount of precipitation slags will be obtained to after sewage disposal in prior art, or be also called mud, its reason is, sewage disposal technology of the prior art is only consider the quality of the sewage obtained and obtain the clear water of better quality, but comprehensive utilization process is not carried out to the mud produced in sewage treatment process, cause the volume of cargo in storage of mud comparatively large, and then cause the secondary pollution of environment; Certainly also there is investigator that the mud produced in sewage treatment process is used for the making of material of construction, but, still containing part water resources in the mud that sewage disposal obtains, this part water resources is then when fully utilizing mud, moisture in mud is carried out press filtration fall, and then cause the generation of secondary sewage, further cause the waste of water resources and the pollution of environment.
Meanwhile, carry out in material of construction making processes at employing mud, owing to the addition of a large amount of chemical agents during sewage disposal, and then make the performance of the mud in material of construction making processes be difficult to control, reduce the performance of material of construction; And then cause the mud produced in sewage treatment process to be difficult to, in the mud being employed and producing in living environment, because objectionable impurities is higher, be difficult to be employed; And then cause these two kinds of mud to cause secondary pollution to environment.
Simultaneously, traditional sewage disposal technology, only rely on single Chemical treatment or physical action process or simple physical action to combine with chemical agent to process, and then cause the degree of depth of sewage disposal dark not, when causing process, the machine utilization in each stage is comparatively large, higher at double.
Based on this, this investigator is through the knowledge in conjunction with architectural knowledge and sewage, field of sludge treatment, by long-term Exploration & stu dy, mud, sewage combination treatment are provided a kind of new departure and new approaches, and the process of the preparation of material of construction and mud, sewage is combined, secondary pollution in sewage, sludge handling process is eliminated, for sewage, mud combination treatment provide a kind of new approaches.
Summary of the invention
In order to solve the above-mentioned technical problem existed in prior art, the invention provides a kind of mud, sewage combination treatment method, sewage and mud can be passed through to coordinate, and then make the metal ion being difficult in the impurity in sewage and mud be removed carry out mutual fusion in mud and sewage, namely make sewage and mud each other complementary action occur, reach clear pollutent wherein mutually; And carry out individual curing after sewage sludge is carried out press filtration separation, impurity in sewage and mud all can further be processed, and the sewage processed and mud can be fully utilized, obtain primary water and adobe, strengthen the added value of product in sewage treatment process, and make adobe the adding by stalk etc. obtained, can make in calcination process, fine and close space is formed in adobe inside, and then reach excellent heat preservation and soundproof effect, and the energy consumption of brickmaking can also be reduced.
Be achieved particular by following technical scheme:
A kind of mud, sewage combination treatment method, comprise the following steps:
(1) sewage sludge mixing: sewage and mud are carried out mixing obtaining slurries in tempering tank, and ratio of mixture when sewage mixes with mud makes the concentration in slurries be 50-85%, and slurries are proceeded in agitated pool, and employing stirring speed is 120-140r/min carries out stir process, and the 0.3-0.6 straw powder doubly adding slurry weight in agitated pool minces, after treating that straw powder minces and added, Keep agitation speed stirs 10-20min again, circulated again in eccentric groove and carried out centrifugal treating 20-30min, inserted again in press filtration room and carried out press filtration process, obtain filtrate and filter pulp,
(2) filtrate filter pulp process: filtrate is sent into precipitation process 8-10h in settling bath, and extract the supernatant liquor in settling bath with pump, and after the precipitation slag in settling bath is mixed with filter pulp, send into high-temperature chamber, supernatant liquor is connected with the supernatant liquor runner of heat exchanger by pipeline, and the steam produced in high-temperature chamber is connected with the steam flow channel of heat exchanger by pipeline; The compound of precipitation slag and filter pulp in high-temperature chamber by after processing, obtaining moisture content is the clod of 1-3%, and clod is sent in pulverizer carry out pulverization process, and carry out pulverization process in pulverizer while, stalk is added again in pulverizer, the add-on of stalk is 0.1-0.3 times of clod amount, after being crushed to 80-90 order, stand-by; The liquid flowed out by steam flow channel in heat exchanger mixes in pipeline with iron powder and carbon dust, and is flowed in settling bath, makes its precipitation process 8-9h in settling bath, and is separated stand-by with supernatant liquor by the glaur a in settling bath; The liquid that the supernatant liquor runner of heat exchanger flows out is passed into eccentric groove, and in eccentric groove, add nano-carbon powder simultaneously, constant temperature centrifugal treating 30-40min, sent into precipitation tank for precipitation process 8-10h again, obtain glaur b and precipitation clear liquid, precipitation clear liquid is sent into nanofiltration membrane and is carried out nanofiltration process, obtains nanofiltration liquid and nanofiltration slag; Nanofiltration liquid proceeds in ultrasonic processor and mixes with iron powder and carbon dust, and adopt ultrasonic frequency to be 405Hz-1150Hz process 10-20min, carry out itself and the liquid flowed out steam flow channel processing the supernatant liquor obtained again to mix to send in ultra-filtration membrane and carry out uf processing, obtain ultrafiltrated and ultrafiltration slag; Ultrafiltrated is sent in reverse osmosis membrane and is processed, and obtains primary water and slag; It is 60-80 DEG C that glaur b feeding heating tank is heated to temperature, and constant temperature adds process 5-10min, obtain steam and mud, after mud mixes with nanofiltration slag, combination treatment is carried out with stalk in tempering tank, stalk combined amount is 0.1-0.3 times of mud and the mixed material of nanofiltration slag, in mixing process, employing stirring speed is 120-150r/min stir process, after treating that stalk has added, Keep agitation process 20-30min, again ultrafiltration slag is joined and wherein mix, and mixed material is sent into shredder grinding, stand-by;
(3) shredder is adopted to carry out milled processed by being crushed to the stand-by mixture of 80-90 order, the granularity making the powder after grinding is 100-130 order, again by mix ultrafiltration slag carry out grinding stand-by slurry be added into wherein, slag after reverse-osmosis treated is added wherein simultaneously, powder and slurry, proportioning between slag is for being 7:2:3 according to mass ratio range, and in engagement process, the temperature of adjustment matching piece is 90-120 DEG C, and employing stirring speed is 80-120r/min stir process, after cooperation to be added completes, continue constant temperature stir process 5-10min again, and at 10-20s, greenhouse cooling is stored stand-by to normal temperature environment,
(4) by step 3) stand-by material sends in compression molding device, and adopt pressure to be 4.1-5.3 ㎏/㎡ compression moulding process, and in pressing process, adopt vibrational frequency to be 50-110Hz vibration treatment 40-70s, obtain just bad;
(5) temperature of just bad employing 40-55 DEG C being baked and banked up with earth process to first bad water content is 1-3%, obtains work in-process; And work in-process are sent into calcining compartment and carry out calcination processing, calcining adopts syllogic calcining, the temperature of first paragraph calcining is 100-300 DEG C, calcination time is 20-30min, the temperature of second segment calcining is 500-900 DEG C, 50-70min, the temperature of the 3rd section calcining is 1100-1300 DEG C, 10-30min, and the base substrate calcined is cooled to normal temperature in physical environment, then polished smooth rear feeding storehouse, namely complete mud, sewage combination treatment.
The described steam produced in heating tank heat-processed of being sent into by glaur b is back in the settling bath of glaur b generation by pipeline.
The described liquid flowed out by steam flow channel in heat exchanger mixes in pipeline with iron powder and carbon dust, and wherein the proportioning of iron powder and carbon dust is 4:3, and the amount joined after iron powder mixes with carbon dust in liquid adds 200-500g for often liter of liquid.
Described adds nano-carbon powder in eccentric groove, and the add-on of nano-carbon powder adds 20-50g for often liter of liquid.
Described adds nano-carbon powder in eccentric groove, and wherein the nano level of nano-carbon powder is 100-500nm.
Described nanofiltration liquid proceeds in ultrasonic processor and mixes with iron powder and carbon dust, and wherein iron powder and carbon dust proportioning are 2:1, joins the add-on mixed with nanofiltration liquid in ultrasonic processor and add 90-130g for often liter of nanofiltration liquid after iron powder mixes with carbon dust.
Described stalk is one or several the mixture in maize straw, sugarcane stalk, straw, wheat stalk.
Described stalk water content is 15-25%.
The described liquid flowed out by steam flow channel in heat exchanger mixes in pipeline with iron powder and carbon dust, the feed postition taked is for first to add iron powder or carbon dust, again carbon dust or iron powder are added, iron powder add-on adds 50-70g for often liter of liquid, and the add-on of carbon dust adds 30-50g for often liter of liquid; Described nanofiltration liquid proceeds in ultrasonic processor and mixes with iron powder and carbon dust, the feed postition taked is for first to add iron powder or carbon dust, carbon dust or iron powder are added, iron powder add-on adds 60-80g for often liter of liquid again, and the add-on of carbon dust adds 40-45g for often liter of liquid.
Described iron powder is 120-300 object powder; Carbon dust is 90-110 object powder.
Compared with prior art, technique effect of the present invention is:
By sewage is mixed according to certain proportioning with mud, make the concentration of mud in sewage within controlled range, and after sewage is mixed in tempering tank with mud, join in agitated pool, and in agitated pool, add straw powder mince, and then the materials such as the detrimental impurity in mud and middle heavy metal soluble in water can be dissolved among sewage, and then the objectionable impurities reached in mud is dissolved among sewage, the part objectionable impurities (type of precipitation) in sewage is taken away by mud; And through the mix and blend effect that straw powder minces in agitated pool, and then make a large amount of spots in sewage by the tube bank of stalk absorption and then precipitate, reducing the foreign matter content in sewage, also make the ionic species in mud be partially soluble among sewage.
Moreover, in conjunction with the centrifugal treating in eccentric groove, the impurity in sewage and mud is departed from mutually, and in conjunction with the press filtration process of press filtration room, filtrate is separated with filter pulp, and then reaches the object to sewage purification; And processed in settling bath by filtrate, the impurity in filtrate be further removed, and obtain precipitation slag and supernatant liquor, and then make the degree of purification of sewage darker, and by precipitation slag with filter pulp all by high-temperature chamber process, acquisition steam and clod; And go to carry out heat exchange process in a heat exchanger to supernatant liquor by high-temperature chamber steam out, and then the temperature of supernatant liquor is improved, and then reach energy-saving and cost-reducing object;
Secondly, by the process of the liquid of the liquid of steam flow channel and supernatant liquor runner through subsequent technique, impurity in liquid can further be got rid of, and by subsequent technique, adopt adding of iron powder and carbon dust, iron powder and carbon dust is made to form iron-carbon micro-electrolysis pond in a liquid, and then reach iron-carbon micro-electrolysis is carried out to liquid, and then the organism in supernatant liquor runner liquid out and steam flow channel liquid is out decomposed, and then make coloured groups occur to decompose and falling, and the organic content reduced in waste liquid, and then reach the effect of sewage being carried out to desolventing technology, and combine the liquid that supernatant liquor runner is flowed out and adopt and add nano-carbon powder and carry out centrifuged deposit process, after again the clear liquid in settling bath being carried out nanofiltration, iron-carbon micro-electrolysis is carried out again when supersound process, and then the foreign matter content in waste liquid can further be reduced, improve the effect to waste water decoloring process and the cost of reduction to waste water decoloring process, and add at nano-carbon powder fashionable, preliminary decolouring or purifying treatment have been carried out to waste water, and then the content of the foreign pigment of waste water is weakened relatively, reduce the difficulty to the decolorizing purification of the dark degree of waste water and purification cost.
Simultaneously, by steam flow channel and supernatant liquor runner liquid out after by iron-carbon micro-electrolysis process, carry out merging through ultra-filtration membrane uf processing, again through reverse osmosis membrane reverse-osmosis treated, the spot content of sewage is further reduced, and the damage by water vector also reduced in purification of waste water treating processes, improve water production rate, reduce water purification cost, and pass through various filtration, dregs after membrane filtration process, and in pulverizer, carry out co-grinding process with stalk by from high-temperature chamber out clod, and add the glaur that steam flow channel water out carries out iron-carbon micro-electrolysis process acquisition and carry out mixed grinding, obtain slag mix carrying out slag that glaur that precipitation process obtains and nanofiltration membrane nanofiltration process obtain and ultrafiltration membrane treatment from supernatant liquor runner liquid out, be that stalk carries out mixing rear grinding, after being coordinated with reverse osmosis membrane slag out by the product of above-mentioned twice grinding again, for the production of brick, and then increase the output of addition product of sewage disposal, improve the added value of sewage disposal, reduce the cost of sewage disposal.
By the raw material of above-mentioned cooperation by after stirring, in compacting, and first bake and bank up with earth process through low temperature, avoid the cracking phenomena of fragment of brick, to be dried to after moisture content is the adobe being less than about 1% again, again adobe is placed in calcining furnace and carries out calcination processing, and calcination time is controlled, and then make the quality of adobe more excellent, finally the process of polishing warehouse-in is carried out to adobe, and then ensure that the comprehensive Utilization Ways of mud in sewage treatment process, and the processing step of comprehensive Utilization Ways process and processing parameter are controlled, ensure that the better quality obtaining adobe, and make the folding strength of adobe reach 35.77-63.59MPa, improve the quality of adobe.
And by constantly adding stalk at sewage treatment process, and most of stalk belongs to fibrous bundle bundle material, it can carry out adsorption precipitation to the impurity in sewage in a large number, and then increase the quantum of output of mud and the output of sewage, reduce the follow-up difficulty to sewage disposal, and improve the relative content of stalk in mud, and by follow-up brickmaking technology, pass through calcination process, the energy consumption of brickmaking can be reduced, also the internal structure of brick can be made to change, change the hollow structure of brick, strengthen the heat preservation and soundproof performance of brick; Therefore, the addition product of sewage disposal is increased, improves the added value of sewage disposal, reduce the cost of sewage disposal, reduce the energy consumption in sewage treatment process.
Mud of the present invention, sewage treatment process constantly adding by stalk, in conjunction with adding of carbon dust iron powder, in conjunction with nanofiltration, ultrafiltration, reverse osmosis technology, introduce ultrasonic, centrifugal treating technology, again by the process of pyrolytic decomposition and interchanger, energy consumption in whole technique is reduced, sewage purification degree is darker, and the mud obtained purifying waste water or slag are coordinating after adding stalk grinding, stir, compacting, bake and bank up with earth, calcining, the steps such as polishing warehouse-in are prepared into adobe, and then obtain more product, improve the added value of sewage sludge process, and what energy was a large amount of adds stalk composition, makes stalk composition again have an effect in calcination process, reduce the energy consumption of brickmaking technology, improve the quality of adobe, further reduce the cost of sewage sludge process.
Technological operation of the present invention is simple, and the sewage disposal time is short, can circulate and carry out manipulation, and its sewage sludge processing power is strong, avoids the secondary pollution of the three wastes, has the significant value of environmental protection and economic benefit.
Accompanying drawing explanation
Fig. 1 is mud of the present invention, sewage combined treatment process schema.
Embodiment
Below in conjunction with accompanying drawing and concrete embodiment, further restriction is done to technical scheme of the present invention, but claimed scope is not only confined to done description.
Embodiment 1
As described in Figure 1, a kind of mud, sewage combination treatment method, comprise the following steps:
(1) sewage sludge mixing: sewage and mud are carried out mixing obtaining slurries in tempering tank, and ratio of mixture when sewage mixes with mud makes the concentration in slurries be 50%, and slurries are proceeded in agitated pool, and employing stirring speed is 120r/min carries out stir process, and the straw powder adding 0.3 times of slurry weight in agitated pool minces, after treating that straw powder minces and added, Keep agitation speed stirs 10min again, circulated again in eccentric groove and carried out centrifugal treating 20min, inserted again in press filtration room and carried out press filtration process, obtain filtrate and filter pulp,
(2) filtrate filter pulp process: filtrate is sent into precipitation process 8h in settling bath, and extract the supernatant liquor in settling bath with pump, and after the precipitation slag in settling bath is mixed with filter pulp, send into high-temperature chamber, supernatant liquor is connected with the supernatant liquor runner of heat exchanger by pipeline, and the steam produced in high-temperature chamber is connected with the steam flow channel of heat exchanger by pipeline; The compound of precipitation slag and filter pulp in high-temperature chamber by after processing, obtaining moisture content is the clod of 1%, and clod is sent in pulverizer carry out pulverization process, and carry out pulverization process in pulverizer while, stalk is added again in pulverizer, the add-on of stalk is 0.1 times of clod amount, after being crushed to 80 orders, stand-by; The liquid flowed out by steam flow channel in heat exchanger mixes in pipeline with iron powder and carbon dust, and is flowed in settling bath, makes its precipitation process 8h in settling bath, and is separated stand-by with supernatant liquor by the glaur a in settling bath; The liquid that the supernatant liquor runner of heat exchanger flows out is passed into eccentric groove, and in eccentric groove, add nano-carbon powder simultaneously, constant temperature centrifugal treating 30min, sent into precipitation tank for precipitation process 8h again, obtain glaur b and precipitation clear liquid, precipitation clear liquid is sent into nanofiltration membrane and is carried out nanofiltration process, obtains nanofiltration liquid and nanofiltration slag; Nanofiltration liquid proceeds in ultrasonic processor and mixes with iron powder and carbon dust, and adopt ultrasonic frequency to be 405Hz process 10min, carry out itself and the liquid flowed out steam flow channel processing the supernatant liquor obtained again to mix to send in ultra-filtration membrane and carry out uf processing, obtain ultrafiltrated and ultrafiltration slag; Ultrafiltrated is sent in reverse osmosis membrane and is processed, and obtains primary water and slag; It is 60 DEG C that glaur b feeding heating tank is heated to temperature, and constant temperature adds process 5min, obtain steam and mud, after mud mixes with nanofiltration slag, combination treatment is carried out with stalk in tempering tank, stalk combined amount is 0.1 times of mud and the mixed material of nanofiltration slag, in mixing process, employing stirring speed is 120r/min stir process, after treating that stalk has added, Keep agitation process 20min, again ultrafiltration slag is joined and wherein mix, and mixed material is sent into shredder grinding, stand-by;
(3) shredder is adopted to carry out milled processed by being crushed to the stand-by mixture of 80 orders, the granularity making the powder after grinding is 100 orders, again by mix ultrafiltration slag carry out grinding stand-by slurry be added into wherein, slag after reverse-osmosis treated is added wherein simultaneously, powder and slurry, proportioning between slag is for being 7:2:3 according to mass ratio range, and in engagement process, the temperature of adjustment matching piece is 90 DEG C, and employing stirring speed is 80r/min stir process, after cooperation to be added completes, continue constant temperature stir process 5min again, and at 10s, greenhouse cooling is stored stand-by to normal temperature environment,
(4) by step 3) stand-by material sends in compression molding device, and adopt pressure to be 4.1 ㎏/㎡ compression moulding process, and in pressing process, adopt vibrational frequency to be 50Hz vibration treatment 40s, obtain just bad;
(5) temperature of just bad employing 40 DEG C being baked and banked up with earth process to first bad water content is 1%, obtains work in-process; And work in-process are sent into calcining compartment and carry out calcination processing, calcining adopts syllogic calcining, the temperature of first paragraph calcining is 100 DEG C, calcination time is 20min, the temperature of second segment calcining is 500 DEG C, 50min, the temperature of the 3rd section calcining is 1100 DEG C, 10min, and the base substrate calcined is cooled to normal temperature in physical environment, then polished smooth rear feeding storehouse, namely complete mud, sewage combination treatment.
Glaur b is sent into the steam produced in heating tank heat-processed to be back in the settling bath of glaur b generation by pipeline.
The liquid flowed out by steam flow channel in heat exchanger mixes in pipeline with iron powder and carbon dust, and wherein the proportioning of iron powder and carbon dust is 4:3, and the amount joined after iron powder mixes with carbon dust in liquid adds 200g for often liter of liquid.
In eccentric groove, add nano-carbon powder, the add-on of nano-carbon powder adds 20g for often liter of liquid.
In eccentric groove, add nano-carbon powder, wherein the nano level of nano-carbon powder is 100nm.
Nanofiltration liquid proceeds in ultrasonic processor and mixes with iron powder and carbon dust, and wherein iron powder and carbon dust proportioning are 2:1, joins the add-on mixed with nanofiltration liquid in ultrasonic processor and add 90g for often liter of nanofiltration liquid after iron powder mixes with carbon dust.
Stalk is maize straw, and water content is 15%.
Iron powder is 120 object powder; Carbon dust is 90 object powder.
Embodiment 2
As shown in Figure 1, a kind of mud, sewage combination treatment method, comprise the following steps:
(1) sewage sludge mixing: sewage and mud are carried out mixing obtaining slurries in tempering tank, and ratio of mixture when sewage mixes with mud makes the concentration in slurries be 85%, and slurries are proceeded in agitated pool, and employing stirring speed is 140r/min carries out stir process, and the straw powder adding 0.6 times of slurry weight in agitated pool minces, after treating that straw powder minces and added, Keep agitation speed stirs 20min again, circulated again in eccentric groove and carried out centrifugal treating 30min, inserted again in press filtration room and carried out press filtration process, obtain filtrate and filter pulp,
(2) filtrate filter pulp process: filtrate is sent into precipitation process 10h in settling bath, and extract the supernatant liquor in settling bath with pump, and after the precipitation slag in settling bath is mixed with filter pulp, send into high-temperature chamber, supernatant liquor is connected with the supernatant liquor runner of heat exchanger by pipeline, and the steam produced in high-temperature chamber is connected with the steam flow channel of heat exchanger by pipeline; The compound of precipitation slag and filter pulp in high-temperature chamber by after processing, obtaining moisture content is the clod of 3%, and clod is sent in pulverizer carry out pulverization process, and carry out pulverization process in pulverizer while, stalk is added again in pulverizer, the add-on of stalk is 0.3 times of clod amount, after being crushed to 90 orders, stand-by; The liquid flowed out by steam flow channel in heat exchanger mixes in pipeline with iron powder and carbon dust, and is flowed in settling bath, makes its precipitation process 9h in settling bath, and is separated stand-by with supernatant liquor by the glaur a in settling bath; The liquid that the supernatant liquor runner of heat exchanger flows out is passed into eccentric groove, and in eccentric groove, add nano-carbon powder simultaneously, constant temperature centrifugal treating 40min, sent into precipitation tank for precipitation process 10h again, obtain glaur b and precipitation clear liquid, precipitation clear liquid is sent into nanofiltration membrane and is carried out nanofiltration process, obtains nanofiltration liquid and nanofiltration slag; Nanofiltration liquid proceeds in ultrasonic processor and mixes with iron powder and carbon dust, and adopt ultrasonic frequency to be 1150Hz process 20min, carry out itself and the liquid flowed out steam flow channel processing the supernatant liquor obtained again to mix to send in ultra-filtration membrane and carry out uf processing, obtain ultrafiltrated and ultrafiltration slag; Ultrafiltrated is sent in reverse osmosis membrane and is processed, and obtains primary water and slag; It is 80 DEG C that glaur b feeding heating tank is heated to temperature, and constant temperature adds process 10min, obtain steam and mud, after mud mixes with nanofiltration slag, combination treatment is carried out with stalk in tempering tank, stalk combined amount is 0.3 times of mud and the mixed material of nanofiltration slag, in mixing process, employing stirring speed is 150r/min stir process, after treating that stalk has added, Keep agitation process 30min, again ultrafiltration slag is joined and wherein mix, and mixed material is sent into shredder grinding, stand-by;
(3) shredder is adopted to carry out milled processed by being crushed to the stand-by mixture of 90 orders, the granularity making the powder after grinding is 130 orders, again by mix ultrafiltration slag carry out grinding stand-by slurry be added into wherein, slag after reverse-osmosis treated is added wherein simultaneously, powder and slurry, proportioning between slag is for being 7:2:3 according to mass ratio range, and in engagement process, the temperature of adjustment matching piece is 120 DEG C, and employing stirring speed is 120r/min stir process, after cooperation to be added completes, continue constant temperature stir process 10min again, and at 20s, greenhouse cooling is stored stand-by to normal temperature environment,
(4) by step 3) stand-by material sends in compression molding device, and adopt pressure to be 5.3 ㎏/㎡ compression moulding process, and in pressing process, adopt vibrational frequency to be 110Hz vibration treatment 70s, obtain just bad;
(5) temperature of just bad employing 55 DEG C being baked and banked up with earth process to first bad water content is 3%, obtains work in-process; And work in-process are sent into calcining compartment and carry out calcination processing, calcining adopts syllogic calcining, the temperature of first paragraph calcining is 300 DEG C, calcination time is 30min, the temperature of second segment calcining is 900 DEG C, 70min, the temperature of the 3rd section calcining is 1300 DEG C, 30min, and the base substrate calcined is cooled to normal temperature in physical environment, then polished smooth rear feeding storehouse, namely complete mud, sewage combination treatment.
The liquid flowed out by steam flow channel in heat exchanger mixes in pipeline with iron powder and carbon dust, and wherein the proportioning of iron powder and carbon dust is 4:3, and the amount joined after iron powder mixes with carbon dust in liquid adds 500g for often liter of liquid.
In eccentric groove, add nano-carbon powder, the add-on of nano-carbon powder adds 50g for often liter of liquid.
In eccentric groove, add nano-carbon powder, wherein the nano level of nano-carbon powder is 500nm.
Described nanofiltration liquid proceeds in ultrasonic processor and mixes with iron powder and carbon dust, and wherein iron powder and carbon dust proportioning are 2:1, joins the add-on mixed with nanofiltration liquid in ultrasonic processor and add 130g for often liter of nanofiltration liquid after iron powder mixes with carbon dust.
Described stalk is sugarcane stalk.
Described stalk water content is 25%.
Described iron powder is 300 object powder; Carbon dust is 110 object powder.
Embodiment 3
As shown in Figure 1, a kind of mud, sewage combination treatment method, comprise the following steps:
(1) sewage sludge mixing: sewage and mud are carried out mixing obtaining slurries in tempering tank, and ratio of mixture when sewage mixes with mud makes the concentration in slurries be 65%, and slurries are proceeded in agitated pool, and employing stirring speed is 130r/min carries out stir process, and the straw powder adding 0.5 times of slurry weight in agitated pool minces, after treating that straw powder minces and added, Keep agitation speed stirs 15min again, circulated again in eccentric groove and carried out centrifugal treating 25min, inserted again in press filtration room and carried out press filtration process, obtain filtrate and filter pulp,
(2) filtrate filter pulp process: filtrate is sent into precipitation process 9h in settling bath, and extract the supernatant liquor in settling bath with pump, and after the precipitation slag in settling bath is mixed with filter pulp, send into high-temperature chamber, supernatant liquor is connected with the supernatant liquor runner of heat exchanger by pipeline, and the steam produced in high-temperature chamber is connected with the steam flow channel of heat exchanger by pipeline; The compound of precipitation slag and filter pulp in high-temperature chamber by after processing, obtaining moisture content is the clod of 2%, and clod is sent in pulverizer carry out pulverization process, and carry out pulverization process in pulverizer while, stalk is added again in pulverizer, the add-on of stalk is 0.2 times of clod amount, after being crushed to 85 orders, stand-by; The liquid flowed out by steam flow channel in heat exchanger mixes in pipeline with iron powder and carbon dust, and is flowed in settling bath, makes its precipitation process 8.5h in settling bath, and is separated stand-by with supernatant liquor by the glaur a in settling bath; The liquid that the supernatant liquor runner of heat exchanger flows out is passed into eccentric groove, and in eccentric groove, add nano-carbon powder simultaneously, constant temperature centrifugal treating 35min, sent into precipitation tank for precipitation process 9h again, obtain glaur b and precipitation clear liquid, precipitation clear liquid is sent into nanofiltration membrane and is carried out nanofiltration process, obtains nanofiltration liquid and nanofiltration slag; Nanofiltration liquid proceeds in ultrasonic processor and mixes with iron powder and carbon dust, and adopt ultrasonic frequency to be 900Hz process 15min, carry out itself and the liquid flowed out steam flow channel processing the supernatant liquor obtained again to mix to send in ultra-filtration membrane and carry out uf processing, obtain ultrafiltrated and ultrafiltration slag; Ultrafiltrated is sent in reverse osmosis membrane and is processed, and obtains primary water and slag; It is 70 DEG C that glaur b feeding heating tank is heated to temperature, and constant temperature adds process 8min, obtain steam and mud, after mud mixes with nanofiltration slag, combination treatment is carried out with stalk in tempering tank, stalk combined amount is 0.2 times of mud and the mixed material of nanofiltration slag, in mixing process, employing stirring speed is 130r/min stir process, after treating that stalk has added, Keep agitation process 25min, again ultrafiltration slag is joined and wherein mix, and mixed material is sent into shredder grinding, stand-by;
(3) shredder is adopted to carry out milled processed by being crushed to the stand-by mixture of 85 orders, the granularity making the powder after grinding is 120 orders, again by mix ultrafiltration slag carry out grinding stand-by slurry be added into wherein, slag after reverse-osmosis treated is added wherein simultaneously, powder and slurry, proportioning between slag is for being 7:2:3 according to mass ratio range, and in engagement process, the temperature of adjustment matching piece is 110 DEG C, and employing stirring speed is 100r/min stir process, after cooperation to be added completes, continue constant temperature stir process 7min again, and at 15s, greenhouse cooling is stored stand-by to normal temperature environment,
(4) by step 3) stand-by material sends in compression molding device, and adopt pressure to be 4.9 ㎏/㎡ compression moulding process, and in pressing process, adopt vibrational frequency to be 80Hz vibration treatment 55s, obtain just bad;
(5) temperature of just bad employing 50 DEG C being baked and banked up with earth process to first bad water content is 2%, obtains work in-process; And work in-process are sent into calcining compartment and carry out calcination processing, calcining adopts syllogic calcining, the temperature of first paragraph calcining is 200 DEG C, calcination time is 25min, the temperature of second segment calcining is 600 DEG C, 60min, the temperature of the 3rd section calcining is 1200 DEG C, 13min, and the base substrate calcined is cooled to normal temperature in physical environment, then polished smooth rear feeding storehouse, namely complete mud, sewage combination treatment.
The described steam produced in heating tank heat-processed of being sent into by glaur b is back in the settling bath of glaur b generation by pipeline.
The described liquid flowed out by steam flow channel in heat exchanger mixes in pipeline with iron powder and carbon dust, and wherein the proportioning of iron powder and carbon dust is 4:3, and the amount joined after iron powder mixes with carbon dust in liquid adds 300g for often liter of liquid.
Described adds nano-carbon powder in eccentric groove, and the add-on of nano-carbon powder adds 40g for often liter of liquid.
Described adds nano-carbon powder in eccentric groove, and wherein the nano level of nano-carbon powder is 200nm.
Described nanofiltration liquid proceeds in ultrasonic processor and mixes with iron powder and carbon dust, and wherein iron powder and carbon dust proportioning are 2:1, joins the add-on mixed with nanofiltration liquid in ultrasonic processor and add 110g for often liter of nanofiltration liquid after iron powder mixes with carbon dust.
Described stalk is straw.
Described stalk water content is 20%.
Described iron powder is 210 object powder; Carbon dust is 100 object powder.
Embodiment 4
As Fig. 1, on the basis of embodiment 1, other steps are with embodiment 1, and wherein stalk is wheat stalk.The described liquid flowed out by steam flow channel in heat exchanger mixes in pipeline with iron powder and carbon dust, the feed postition taked is for first to add iron powder, added by carbon dust, iron powder add-on adds 50g for often liter of liquid again, and the add-on of carbon dust adds 30g for often liter of liquid; Described nanofiltration liquid proceeds in ultrasonic processor and mixes with iron powder and carbon dust, and iron powder for first to be added by carbon dust, then adds by the feed postition taked, and iron powder add-on adds 60g for often liter of liquid, and the add-on of carbon dust adds 40g for often liter of liquid.
Embodiment 5
As Fig. 1, on the basis of embodiment 2, other steps are with embodiment 2, and wherein stalk is that wheat stalk mixes according to same-size ratio with maize straw.The described liquid flowed out by steam flow channel in heat exchanger mixes in pipeline with iron powder and carbon dust, the feed postition taked is for first to add carbon dust, added by iron powder, iron powder add-on adds 70g for often liter of liquid again, and the add-on of carbon dust adds 50g for often liter of liquid; Described nanofiltration liquid proceeds in ultrasonic processor and mixes with iron powder and carbon dust, and carbon dust for first to be added by iron powder, then adds by the feed postition taked, and iron powder add-on adds 80g for often liter of liquid, and the add-on of carbon dust adds 45g for often liter of liquid.
Embodiment 6
As Fig. 1, on the basis of embodiment 3, other steps are with embodiment 3, and wherein stalk is wheat stalk with straw and sugarcane stalk according to mass ratio is that 1:3:5 mixes.The described liquid flowed out by steam flow channel in heat exchanger mixes in pipeline with iron powder and carbon dust, the feed postition taked is for first to add iron powder, added by carbon dust, iron powder add-on adds 60g for often liter of liquid again, and the add-on of carbon dust adds 40g for often liter of liquid; Described nanofiltration liquid proceeds in ultrasonic processor and mixes with iron powder and carbon dust, and carbon dust for first to be added by iron powder, then adds by the feed postition taked, and iron powder add-on adds 70g for often liter of liquid, and the add-on of carbon dust adds 43g for often liter of liquid.
Embodiment 7
As Fig. 1, on the basis of embodiment 1, other steps are with embodiment 1, and wherein stalk is wheat stalk, sugarcane stalk, maize straw, rice straw mix according to 5:3:7:9.The described liquid flowed out by steam flow channel in heat exchanger mixes in pipeline with iron powder and carbon dust, the feed postition taked is for first to add carbon dust, added by iron powder, iron powder add-on adds 55g for often liter of liquid again, and the add-on of carbon dust adds 45g for often liter of liquid; Described nanofiltration liquid proceeds in ultrasonic processor and mixes with iron powder and carbon dust, and iron powder for first to be added by carbon dust, then adds by the feed postition taked, and iron powder add-on adds 75g for often liter of liquid, and the add-on of carbon dust adds 41g for often liter of liquid.
Test example:
Sewage takes from the gallic acid production line of Hua great groups of stars company, iron powder used, carbon dust is bought by market, and respectively the sewage of above-mentioned gallic acid production line to be classified in three categories point, mud is chosen ore deposit factory and is produced the mud precipitated, and mud is divided into trisection, and respectively according to embodiment 1, embodiment 2, technical scheme disclosed in embodiment 3 carries out three groups of experiments, and to the sewage disposal time, indices after sewage disposal, and the colourity of sewage detects, and result is analyzed with " integrated wastewater discharge standard " (GB8978-1996), can draw, colourity reduces and reduces 300-350 doubly relative to standard, in water, the content of heavy metal ion is better than integrated wastewater discharge standard, and and the higher limit of heavy metal content in integrated wastewater discharge standard is better than rate reaches 50-70% (rate that is better than here is the value being deducted the heavy metal content drawn in test example by the higher limit of the heavy metal ion content in standard, to differ from as divisor again, standard max value for dividend be divided by after be multiplied by very obtained result again), it is 2 days to the time of sewage disposal.
And the folding strength of the adobe be made into according to technique by the mud in above-mentioned treating processes measures, its folding strength can reach 35.77-63.59MPa, also adobe is carried out to the detection of freezing and thawing performance simultaneously, and its freezing and thawing performance is more excellent.
Therefore, by technical scheme of the present invention, combination treatment is carried out to sewage and mud, the heavy metal ion in mud can not only be made, impurity hard to tolerate in sewage can carry out carrying out part removing in subsequent filter process, and then reduction subsequent nano-filtration, ultrafiltration, the machine utilization of osmosis filtration process, reduce cost of sewage disposal, mud in sewage treatment process can also be carried out the preparation of material of construction, and in preparation process, by adding stalk in the stalk in sewage treatment process adds and mud further processes process, and then make the content of the stalk in material of construction relatively large, and can guarantee that the strength property of the material of construction made is more excellent, and reduce again to the energy consumption in material of construction calcination processing process, improve internal structure compactness and the gap rate of material of construction, improve the heat preservation and soundproof performance of material of construction, for the added value raising of sewage disposal contributes.
Meanwhile, adding of a large amount of chemical agents can also be avoided, reduce the cost of sewage disposal; By the control of the add-on of iron powder, carbon dust, and the control of addition sequence, make iron powder and carbon dust form micro-electrolysis reaction in a liquid, and then the polymer coloring matter in liquid is decomposed, and then the content of coloring matter in reduction sewage, and then reach the object of decolouring; And in whole technological process, adopt adding of stalk, the tube bank state of stalk is made to carry out adsorption to the impurity in sewage and coloring matter, and then the content of coloring matter and the content of impurity in reduction sewage, make the impurity in sewage can early stage treating processes a large amount of be deposited among mud, and then reach the load alleviating follow-up equipment, improve the superiority to sewage disposal result, reduce the cost of sewage disposal, visible, technical scheme of the present invention has significant economic benefit and the value of environmental protection.
It is important to point out at this; above embodiment and test example are only limitted to the technique effect that can reach technical scheme of the present invention and technical scheme of the present invention is further elaborated and illustrates; be not that further restriction is done to technical scheme of the present invention; the essential characteristics of the non-protruding that those skilled in the art make on this basis and the improvement of non-significant progress, all belong to protection category of the present invention.
Claims (10)
1. mud, a sewage combination treatment method, is characterized in that, comprise the following steps:
(1) sewage sludge mixing: sewage and mud are carried out mixing obtaining slurries in tempering tank, and ratio of mixture when sewage mixes with mud makes the concentration in slurries be 50-85%, and slurries are proceeded in agitated pool, and employing stirring speed is 120-140r/min carries out stir process, and the 0.3-0.6 straw powder doubly adding slurry weight in agitated pool minces, after treating that straw powder minces and added, Keep agitation speed stirs 10-20min again, circulated again in eccentric groove and carried out centrifugal treating 20-30min, inserted again in press filtration room and carried out press filtration process, obtain filtrate and filter pulp,
(2) filtrate filter pulp process: filtrate is sent into precipitation process 8-10h in settling bath, and extract the supernatant liquor in settling bath with pump, and after the precipitation slag in settling bath is mixed with filter pulp, send into high-temperature chamber, supernatant liquor is connected with the supernatant liquor runner of heat exchanger by pipeline, and the steam produced in high-temperature chamber is connected with the steam flow channel of heat exchanger by pipeline; The compound of precipitation slag and filter pulp in high-temperature chamber by after processing, obtaining moisture content is the clod of 1-3%, and clod is sent in pulverizer carry out pulverization process, and carry out pulverization process in pulverizer while, stalk is added again in pulverizer, the add-on of stalk is 0.1-0.3 times of clod amount, after being crushed to 80-90 order, stand-by; The liquid flowed out by steam flow channel in heat exchanger mixes in pipeline with iron powder and carbon dust, and is flowed in settling bath, makes its precipitation process 8-9h in settling bath, and is separated stand-by with supernatant liquor by the glaur a in settling bath; The liquid that the supernatant liquor runner of heat exchanger flows out is passed into eccentric groove, and in eccentric groove, add nano-carbon powder simultaneously, constant temperature centrifugal treating 30-40min, sent into precipitation tank for precipitation process 8-10h again, obtain glaur b and precipitation clear liquid, precipitation clear liquid is sent into nanofiltration membrane and is carried out nanofiltration process, obtains nanofiltration liquid and nanofiltration slag; Nanofiltration liquid proceeds in ultrasonic processor and mixes with iron powder and carbon dust, and adopt ultrasonic frequency to be 405Hz-1150Hz process 10-20min, carry out itself and the liquid flowed out steam flow channel processing the supernatant liquor obtained again to mix to send in ultra-filtration membrane and carry out uf processing, obtain ultrafiltrated and ultrafiltration slag; Ultrafiltrated is sent in reverse osmosis membrane and is processed, and obtains primary water and slag; It is 60-80 DEG C that glaur b feeding heating tank is heated to temperature, and constant temperature adds process 5-10min, obtain steam and mud, after mud mixes with nanofiltration slag, combination treatment is carried out with stalk in tempering tank, stalk combined amount is 0.1-0.3 times of mud and the mixed material of nanofiltration slag, in mixing process, employing stirring speed is 120-150r/min stir process, after treating that stalk has added, Keep agitation process 20-30min, again ultrafiltration slag is joined and wherein mix, and mixed material is sent into shredder grinding, stand-by;
(3) shredder is adopted to carry out milled processed by being crushed to the stand-by mixture of 80-90 order, the granularity making the powder after grinding is 100-130 order, again by mix ultrafiltration slag carry out grinding stand-by slurry be added into wherein, slag after reverse-osmosis treated is added wherein simultaneously, powder and slurry, proportioning between slag is for being 7:2:3 according to mass ratio range, and in engagement process, the temperature of adjustment matching piece is 90-120 DEG C, and employing stirring speed is 80-120r/min stir process, after cooperation to be added completes, continue constant temperature stir process 5-10min again, and at 10-20s, greenhouse cooling is stored stand-by to normal temperature environment,
(4) by step 3) stand-by material sends in compression molding device, and adopt pressure to be 4.1-5.3 ㎏/㎡ compression moulding process, and in pressing process, adopt vibrational frequency to be 50-110Hz vibration treatment 40-70s, obtain just bad;
(5) temperature of just bad employing 40-55 DEG C being baked and banked up with earth process to first bad water content is 1-3%, obtains work in-process; And work in-process are sent into calcining compartment and carry out calcination processing, calcining adopts syllogic calcining, the temperature of first paragraph calcining is 100-300 DEG C, calcination time is 20-30min, the temperature of second segment calcining is 500-900 DEG C, 50-70min, the temperature of the 3rd section calcining is 1100-1300 DEG C, 10-30min, and the base substrate calcined is cooled to normal temperature in physical environment, then polished smooth rear feeding storehouse, namely complete mud, sewage combination treatment.
2. mud, sewage combination treatment method as claimed in claim 1, is characterized in that, the described steam produced in heating tank heat-processed of being sent into by glaur b is back in the settling bath of glaur b generation by pipeline.
3. mud, sewage combination treatment method as claimed in claim 1, it is characterized in that, the described liquid flowed out by steam flow channel in heat exchanger mixes in pipeline with iron powder and carbon dust, wherein the proportioning of iron powder and carbon dust is 4:3, and the amount joined after iron powder mixes with carbon dust in liquid adds 200-500g for often liter of liquid.
4. mud, sewage combination treatment method as claimed in claim 1, it is characterized in that, described adds nano-carbon powder in eccentric groove, and the add-on of nano-carbon powder adds 20-50g for often liter of liquid.
5. the mud as described in claim 1 or 4, sewage combination treatment method, is characterized in that, described adds nano-carbon powder in eccentric groove, and wherein the nano level of nano-carbon powder is 100-500nm.
6. mud, sewage combination treatment method as claimed in claim 1, it is characterized in that, described nanofiltration liquid proceeds in ultrasonic processor and mixes with iron powder and carbon dust, wherein iron powder and carbon dust proportioning are 2:1, join the add-on mixed with nanofiltration liquid in ultrasonic processor and add 90-130g for often liter of nanofiltration liquid after iron powder mixes with carbon dust.
7. mud, sewage combination treatment method as claimed in claim 1, it is characterized in that, described stalk is one or several the mixture in maize straw, sugarcane stalk, straw, wheat stalk.
8. mud, sewage combination treatment method as claimed in claim 1, it is characterized in that, described stalk water content is 15-25%.
9. mud, sewage combination treatment method as claimed in claim 1, it is characterized in that, the described liquid flowed out by steam flow channel in heat exchanger mixes in pipeline with iron powder and carbon dust, the feed postition taked is for first to add iron powder or carbon dust, again carbon dust or iron powder are added, iron powder add-on adds 50-70g for often liter of liquid, and the add-on of carbon dust adds 30-50g for often liter of liquid; Described nanofiltration liquid proceeds in ultrasonic processor and mixes with iron powder and carbon dust, the feed postition taked is for first to add iron powder or carbon dust, carbon dust or iron powder are added, iron powder add-on adds 60-80g for often liter of liquid again, and the add-on of carbon dust adds 40-45g for often liter of liquid.
10. mud, sewage combination treatment method as described in claim 1 or 3 or 6 or 9, is characterized in that, described iron powder is 120-300 object powder; Carbon dust is 90-110 object powder.
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