[0030] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0031] Figure 4 It is a flow chart of the method for classifying and treating waste water according to the present invention, such as Figure 4 Shown: a method for classifying waste water according to the present invention includes: step 1, breaking the bags of the garbage in the storage module through the garbage feeding module and evenly transferring it to the subsequent processing module; step 2, using screening and water washing to dispose of the garbage Step 3: Use the heavy object separation module to feed the water pump into the separation box, let the heavy objects sink and separate naturally, and the light garbage suspended above the water layer overflows the heavy object separation box with the water flow. The deposited inorganic heavy objects are selected by the magnetic separation device to select the metal heavy objects; step 4, use the wind separation module to transport the light garbage overflowing from the heavy object separation box to the air separation device through the conveyor belt, and the fan blows away the lighter garbage; step 5. Sort out organics, combustibles, plastics, etc. through the manual sorting module.
[0032] Among them, it also includes a sewage treatment module, which runs through the entire water classification garbage treatment system, and rationally utilizes and treats the sewage generated by the entire system.
[0033] Wherein, before step 1, a spray head with disinfectant and a fire hydrant are used to dust and deodorize the garbage.
[0034] Among them, the second step uses the screening module to flush out the small particulate matter attached to the garbage and enter the sewage through screening. The screened small foam, nut shells and other floating objects, as well as sediment and small particles of perishable organic matter, are collected in turn by the grid conveyor belt, sand settling tank, rotary grille and sedimentation tank in the sewage pretreatment module. .
[0035] Among them, the sieve of the trommel screen in step 2 is sent to the heavy object separation box in step 3, and the water supply pump continuously injects water into the separation box, and the garbage in the separation box utilizes their different settling characteristics in water. Objects with heavy specific gravity such as metal and a very small amount of animal bones quickly sink to the bottom of the box, and are collected and output through the conveyor belt. The metal mixed in the heavy objects is selected by the magnetic separation device; the rest of the garbage is suspended on the upper layer of the water surface, and the heavy objects are separated by the overflow of water. box.
[0036] refer to figure 1 , figure 2, The waste water treatment system of the present invention includes a waste classification water system 10, including a storage module 11, a waste feeding module 12, a dust-proof and deodorizing module 13, a screening module 14, a heavy object separation module 15, a Wind selection module 16 , a manual sorting module 17 , a sewage pretreatment module 18 and a sewage treatment module 19 .
[0037] The storage module 11 is not only the end point of the garbage transfer process, but also the starting point of the garbage disposal production line. Since the transfer of domestic garbage is intermittent, and the processing production line needs to work continuously, in order to solve this contradiction, a garbage storage bin is set up at the beginning of the processing line. as attached figure 1 As shown, the storage module 11 is provided with the front end of other modules, and is located at the front end of the garbage feeding module 12. As a closed collection space, the storage module 11 is separated from the other modules by a concrete wall. This design can avoid the odor of the original garbage and the dust from the loading and unloading process from being emitted to the outside, will not pollute the air around the workshop and the factory area, and ensure that the working environment of the workshop and the surrounding environment of the factory area is excellent.
[0038] Wherein, adjacent to the storage module 11, a garbage feeding module 12 is included, and the garbage feeding module 12 includes a crane 121, a grab bucket 122, a feeding hopper 123, a feeding mechanism 124, a first bag breaking device 125, and a first conveyor belt 126 and other devices, in which the grab 122 is arranged at the lower end of the traveling vehicle 121, and the feeding device 124, the bag breaking device 125 and the conveyor belt 126 are arranged below the feeding hopper 123. In this embodiment, the volume of the feeding hopper 123 is 15 cubic meters , when fully loaded, it can carry eight grab buckets of garbage. The feeding hopper 123 is equivalent to a buffer, which can not only ensure the uninterrupted feeding of the processing line, but also free up time for the grab to perform the necessary sizing work. Running to the top of the feeding hopper 123 and discharging into the feeding hopper 123, the feeding mechanism 124 can be a gear structure to transfer the garbage in the feeding hopper 123 to the first conveyor belt 126 for transmission.
[0039] Among them, the first bag breaking device 125 is arranged at the bottom of the feeding hopper 123, and can be a sharp blade structure. The first bag breaking is performed while the feeding mechanism 124 evenly transports the garbage; the lower part of the feeding mechanism 124 is provided with a secondary In the bag breaking device (not shown in the figure), the garbage sent out by the feeding mechanism 124 must pass through the secondary bag breaking device, and the unbroken garbage bag is cut to allow the garbage to be completely scattered. The primary and secondary bag breaking devices work together to make the waste bag breaking rate more than 90%. The garbage passing through the broken bag enters the conveyor belt, which sends the garbage together with the broken bag to the next stage of processing.
[0040] Among them, the dust-proof and deodorizing module 13 includes dust-removing and deodorizing, and is an indispensable module of the water classification waste treatment system. There is a lot of dust at the entrance of the garbage storage bin and the processing line, and the odor is stinky. If it is not treated, it will have a certain impact on the working environment of the storage bin and the surrounding environment of the factory area. Dust removal and deodorization must be carried out. Since the system uses water as the medium, the garbage to be treated needs to be washed with water, so the dust removal with water can achieve good results, will not change the nature of the garbage, and is beneficial and harmless to the garbage classification and treatment. The spray heads 131 and the fire hydrants 132 are specially arranged on both sides of the storage bin, and the spray heads can cover the entire storage module 11, while the fire hydrants 132 are only arranged at the diagonally opposite corners of the storage bin. During normal operation, the spray head 131 sprays water mist, which can humidify the dry garbage and prevent the garbage from raising too much dust when it is poured into the storage bin and in the process of handling and conveying, so as to achieve the purpose of dust removal. After work, the storage bin can be flushed with a fire hydrant, and a sewage well is arranged below the storage module 11 to facilitate sewage collection and emptying. In the event of a fire, sprinkler heads and fire hydrants can also fight fires.
[0041] The deodorizing module 13 in this embodiment is diluted with deodorizing liquid according to a certain proportion, injected into the dedusting water pipeline, and spraying the deodorizing liquid to the storage bin periodically and quantitatively through the dust-removing spray head to suppress and decompose garbage odor molecules, and The odor in the storage compartment is reduced to a minimum. At the same time, special deodorizing nozzles are set on both sides of the door of the storage warehouse, and deodorizing liquid is regularly sprayed to the door to prevent the odor from spreading to the outside of the workshop and ensure a good surrounding environment of the factory.
[0042] The water of the spray head comes from the high-pressure flushing pump, which can ensure better atomization effect, save water and achieve the purpose of dust removal and deodorization.
[0043] Wherein, the screening module 14 includes a trommel screen 141 and a flushing pump group 147 . The garbage feeding module 12 at the front end is transported to the trommel screen 141, and at the same time, the flushing pump group 147 sprays high-pressure water to wash the garbage with water, wash out the tiny organic particles attached to the garbage, and screen out the fine particles in the garbage. . The sifted objects are called under sieves and enter the sewage collection tank together with the sewage.
[0044] Among them, the function of the drum screen 141 is to screen out the fine particles in the garbage such as sand, melon and fruit peel, small foam, and some tiny perishable organic substances such as soup rice grains, etc., and clean the garbage at the same time. For deodorization, the trommel screen 141 is the main device of the system. The trommel screen 141 includes a motor gear box 1411 and a movable screen piece 1412, which is driven by the motor gear box 1411; there are several movable screen pieces 1412 on the trommel screen, the screen holes are 25X15, and the screen pieces are 226X135, which is convenient for maintenance and replacement; The screen 141 is further provided with a bag-breaking knife inside, which can further break the bags of the garbage; the drum screen is inclined at an inclination of 2.2°.
[0045] The flushing pump set 147 is also one of the main devices of the system. The flushing pump 147 sends water with a certain pressure into the trommel screen 141, and sprays out through multiple sets of nozzles built in the trommel screen 141, so that the sprayed water can form a pressure water curtain to ensure that the water curtain can cover the trommel screen. Longitudinal length, and the water curtain points to the place where the garbage is concentrated.
[0046] After the conveyor belt sends the garbage into the trommel screen 141, it rotates together with the trommel screen 141, and continuously rolls and moves downward in the trommel screen 141. Multiple sets of water curtains continuously flush the garbage to ensure that all the garbage gets enough flushing water and is washed clean. Sediment, small particles of perishable organic matter, oil slicks, etc. in the garbage are screened out together with the sewage and enter the sewage collection tank under the trommel screen. The larger garbage becomes the material on the screen and follows the inclination of the trommel screen, exits the trommel screen, and enters the next classification procedure.
[0047] Among them, the sewage pretreatment module includes a grid conveyor 1421 , a sand settling tank 142 , a sand-water separation device 143 , a drum grid 149 , a sedimentation tank 144 , the No. 2 conditioning tank 181 , a concentration tank 146 and a sewage pump group 148 . The sewage that washes the garbage carries sediment, organic matter and floating matter first into the front of the chute, and a specially designed mesh conveyor 1421 is installed on the water surface at the front of the chute to collect the floating matter and combine it with the combustible matter classified in the subsequent process. Then the sewage is led to the sand settling tank 142 for sand settling treatment. The sewage after the sand settling treatment first passes through the rotating drum grille 149 to collect the suspended rice, soybeans and other organic matter with larger particle sizes, and then enters the settling tank for processing. Precipitation treatment. The main purpose of its precipitation is to sort out the small particles of organic matter in the garbage, such as the humus produced in the process of garbage stacking.
[0048] The function of the sand settling tank 142 is to separate out the inorganic small particles such as sediment in the fine particles screened by the trommel screen. The sand settling tank 142 is constructed as a reinforced concrete pool with a narrow front and a wide rear and a sharp enlargement, so as to reduce the flow rate of sewage and facilitate sand settling. Under the action of gravity, the sewage flows in the sedimentation tank according to the designed route. Due to the different specific gravity of various substances, the sediment with larger specific gravity quickly settles at the bottom of the pond, falls into the sand collecting hopper, and is then sent to the sand-water separation device 143 by the mortar pump for dehydration treatment. The dewatered sediment is combined with the inorganic heavy substances classified in the subsequent process.
[0049] The sedimentation tank separates the small organic particles such as humus from the fine particles screened by the trommel screen. The sedimentation tank is designed as an advection sedimentation tank. The sewage after sedimentation enters the sedimentation tank 144. It firstly distributes water evenly through the rectification of overflow weirs and perforated flower walls, and then enters the sedimentation tank. A small amount of sediment is deposited at the bottom of the tank, and the sediment is slowly scraped into the sludge collection bucket by the scraper and skimmer set in the sedimentation tank, and the sludge in the sludge collection bucket is pumped out by the sludge pump and discharged into the concentration tank. The clear water in the upper part of the sedimentation tank flows into the No. 2 regulating tank 181 after passing through the outlet weir, and is recycled as the washing water of the trommel screen; the other part flows into the sewage treatment module for advanced treatment.
[0050] The sediment in the concentration tank 146 is pumped out by the sludge pump and discharged into the dewatering device. After being dehydrated, it is combined with the perishable organic matter classified in the subsequent process, and sent to the composting workshop for composting. The sewage in the concentration tank 146 is sent to the sewage treatment room by the sewage pump for treatment.
[0051] Garbage goes through a screening process, and fine particles are sorted out. The trommel screen can sort out about 15% of inorganic substances such as sediment, about 8% of perishable organic matter, and about 1.5% of floating matter from the primary garbage, and the primary garbage can be reduced by about 25%. At the same time, the garbage is cleaned, there is no odor and dust, and the working environment of the workshop is greatly improved. The material under the sieve is recovered through the sedimentation tank and the sedimentation tank, and the recovery rate is as high as 90%. The remaining less than 10% of sediment, organic matter, etc., will be further processed by the sewage treatment workshop. Screening, water washing, sand settling and precipitation are simple and reliable physical methods that do not require other chemical energy sources and no intermediate products, so this link is energy-saving and environmentally friendly.
[0052] The heavy object separation module 15 is to separate the heavier inorganic materials from the garbage on the screen after being processed by the trommel screen. The heavy object separation module 15 includes a heavy object separation box 151 , a water supply pump (not shown in the figure), a magnetic separation device 153 , and a conveyor belt 154 .
[0053] The working principle of the heavy object separation module 15 is as follows: the sieve of the trommel screen is sent to the heavy object separation box 151, and at the same time, the water supply pump continuously injects water into the separation box 151, and the garbage in the separation box 151 utilizes their sedimentation characteristics in water. Different, bricks, tiles, metals, a very small amount of animal bones and other heavy objects quickly sink to the bottom of the box, while the rest of the light garbage is suspended on the upper layer of the water, and overflows out of the heavy object separation box with the help of water flow.
[0054] The heavy object separation box 151 is designed to be a long cone. The separated heavy objects sink into the bottom of the box, fall on the conveyor belt, and are transported out of the separation box. A magnetic separation device 153 is set above the heavy object conveyor belt, and the conveyor belt carries the heavy objects through magnetic separation. When installing 153, the metal mixed in the heavy objects is selected by the magnetic separation device and placed in the metal recovery hopper, and the remaining heavy objects enter the manual sorting table.
[0055] The garbage floating on the upper layer of the water surface of the separation box overflows the heavy object separation box with the water flow, and the water directly flows into the No. 3 regulating tank 183 of the sewage pretreatment module 18, while the objects in the water are collected and sent to the air separation device 16 for air separation .
[0056] The heavy object separation module 16 is a physical separation process, and the whole process is environmentally friendly. Through the separation of heavy objects, 8%-10% of inorganic heavy objects and 0.1% of metals can be sorted out from the garbage, and the recovery rate of inorganic heavy objects and metals is 100%.
[0057] Among them, the wind separation module 16 preliminarily classifies the light garbage after the heavy object separation treatment, and sorts out two categories of plastics and light debris, which lays the foundation for further manual subdivision.
[0058] The winnowing module 16 utilizes the principle of blowing out lighter substances by a fan. After the heavy objects are separated, the light garbage is sent to the air selection box, and the fan blows out the lighter plastic, a small amount of light foam, etc., and enters the plastic conveyor belt 161, and is sent to the manual sorting table. The relatively heavy debris enters the perishable organics conveyor belt 162 and is also sent to the manual sorting table.
[0059]In the manual sorting module 17, the wind sorting device roughly sorts the washed light waste, and transfers it to the manual sorting module 17 through the plastic conveyor belt 161 and the perishable organic matter conveyor belt 161 respectively, and separates it from the heavy object separation box. 7 working positions sort the perishable organics on the heavy-object conveyor belt. After the perishable organics are manually selected, the remaining substances are completely inorganic, which can be treated together with the sediment separated from the sewage pretreatment module. Production of environmentally friendly building materials; 8 working stations sort combustible debris on the conveyor belt of perishable organic matter. After manual selection of combustible debris, the remaining material is completely perishable organic matter, which can be combined with the sludge separated from the sewage pretreatment module. Composting is carried out; 8 working positions sort the combustible debris on the plastic conveyor belt, and the combustible debris is manually selected, and the remaining material is completely plastic. Between the perishable organic matter conveyor belt and the plastic conveyor belt, a distance of 1 meter is left to facilitate the selection of combustible debris from the plastic conveyor belt, and it is also convenient to select combustible debris from the perishable conveyor belt. So far, the garbage has been sorted and processed.
[0060] like image 3 Shown: the present invention also includes a sewage pretreatment module 18 and a sewage treatment module (not shown in the figure), which rationally utilizes and treats the sewage generated by the entire garbage treatment system 10. The sewage pretreatment module 18 includes Sewage collection tank, grit chamber, drum grill 149, sedimentation tank, No. 2 conditioning tank 181, No. 3 conditioning tank 182, reclaimed water conditioning tank 183 and water supply tank 184. Among them, the sewage collected by the sewage collection tank under the drum screen is precipitated by the grit chamber and the sedimentation tank, and then pumped into the sewage treatment module for advanced treatment. Pool 181 and No. 3 regulating pool 182 use water. The water overflowing from the heavy object separation tank 151 is collected by the No. 3 regulating pool 182. The overflowing water from the No. 3 regulating pool 182 flows into the No. 2 regulating pool 181. The No. 2 regulating pool 181 supplies water to the flushing pump to flush the garbage, and the water supply tank 184 The water can ensure the normal operation of each pump. Because this water treatment method saves more water resources through the repeated utilization of water resources.
[0061] The advantages of the present invention are:
[0062] 1. High efficiency of garbage classification, the garbage water classification system can classify: 24% organic matter, 15% plastic, 37.9% combustible, 0.1% metal and 23% inorganic.
[0063] 2. It does not pollute the environment. The present invention uses water as the medium to classify the garbage, so that the dust and odorous organic matter in the garbage are transferred into the water, no dust is raised in the whole classification process, the odor is greatly reduced, the working environment is improved and the whole The sorting process is a physical process, no chemical energy is needed, the chemical composition of the waste is not destroyed, no intermediate substances are produced in the waste treatment process, and there will be no secondary pollution to the surrounding environment.
[0064] 3. Good working environment
[0065] Since the garbage classification of the present invention is realized by washing with water, there is no dust and no peculiar smell in the treatment process, so the treatment plant is clean and hygienic.
[0066] 4. The production line is simple, controllable and reliable
[0067] The garbage water classification system of the invention is simple in equipment, all set in the workshop, the temperature of the working environment changes little, the working stability is good, the equipment maintenance is convenient, and the whole line is automatically controlled.
[0068] 5. Recycling of water resources, saving water resources.
[0069] The above descriptions are only the best embodiments of the present invention and are not intended to limit the scope of the present invention. All equivalent changes or modifications made according to the scope of the patent application of the present invention are all covered by the present invention.
