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A kitchen waste and pretreatment technology, applied to the removal of solid waste, etc., can solve the problems of low recovery rate of organic matter, broken bag of bagged garbage, low reduction rate, etc., and achieve high recycling rate and high-precision separation , The effect of high liquid phase purity
Pending Publication Date: 2021-10-01
中国环境保护集团有限公司
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But there are the following defects: (1) In principle, the organic matter in the garbage does not conform to the size rule, and only has the significance of sorting in probability, and particle size sorting will inevitably cause a large loss of organic matter; (2) The bagged garbage must be broken. ; (3) Sorting rejects are still garbage, and garbage treatment is still needed, and
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[0038] Example 1
[0039] Kitchen waste pretreatment system (partial reference figure 1 ), Including the shield 1, slurry machine 2, unloading tank 3 (connected plug machine discharge port), high concentrator 4, sand water separator 5, heat exchanger 6 (pipe engine) ), Sterilization can 7, two phase centrifuge 8, water buffer tank 9 (ligation of two phase centrifuge liquid phases), heat exchanger 6 (case);
[0040] Also included, a spiral press, the spiral press connection slurry opening;
[0041] Slurry machine (partial reference figure 2 ), Including a pulverized cavity 10, a rotor 11 disposed in the slurry cavity, a kitchen waste inlet 12 and a slag, a slag, a slag, a slag, a cavity disposed on the slurry cavity. The sieve plate 14 at the bottom opening of the body is provided with a drain opening 15 under the screen.
[0042] The rotor 11 is vertically upwardly disposed above the sieve plate, which includes a slurry blade that is spirally disposed on the rotating shaft, the pu...
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[0044] Example 2
[0045]The system described in Example 1 is carried out in accordance with the method of the present invention, and the following steps are specifically include the following steps:
[0046] (1) Removing the kitchen waste into the pickup, due to its labeling, the water content is relatively low, the material size is relatively large, the garbage classification may be mixed in the initial or classification and delivery settings may be mixed more Easy to rotten, in order to ensure smooth process, use the grip form. The components of the kitchen waste are shown in Table 1.
[0047] Table 1 Kitchen waste component
[0048]
[0049] (2) The kitchen waste is plaized from the shower to the slurry machine (the equipment parameter is shown in Table 2), and the solid content of the kitchen waste is 15% by the annular water spray pipe to the slurry machine. The rotor rotation is turned in slurry treatment, and the pulverizer allows the garbage flow to form a strong eddy c...
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Abstract
The invention provides a kitchen garbage pretreatment system and method. The system comprises a pulpifying machine, a desanding system, a sterilization device and a two-phase centrifugal machine, wherein the pulpifying machine comprises a pulpifying cavity, a rotor arranged in the pulpifying cavity, a kitchen garbage inlet, a residue discharging opening and a sieve plate, the kitchen garbage inlet and the residue discharging opening are formed in the wall of the pulpifying cavity, the sieve plate is arranged at an opening in the bottom of the pulpifying cavity, and a liquid discharging opening is formed below the sieve plate; the desanding system communicates with the liquid discharging opening of the pulpifying machine; the sterilization device communicates with a liquid discharging opening of the desanding system; and the two-phase centrifugal machine communicates with a discharging opening of the sterilization device and is used for separating materials from the sterilization device into a liquid phase and a solid phase. The kitchen garbage pretreatment system can realize high-precision separation of organic matters and impurities; the yield of biological anaerobic degradation products is high, and the recycling rate of kitchen garbage is high; the liquid phase purity is high, and the stability of a subsequent anaerobic system is facilitated; and the operation cost is low, and a key technical support is provided for full-resource utilization of the kitchen garbage.
Description
technical field [0001] The invention relates to the technical field of garbage treatment, in particular to a kitchen waste pretreatment system and method. Background technique [0002] At present, in addition to the two major harmless treatment processes of landfill and incineration, the separate treatment of kitchen waste is mostly based on biochemical treatment and resource utilization, and biochemical treatment is mainly based on two major treatment processes: anaerobic digestion and aerobic composting. . Compared with the traditional aerobic composting process, anaerobic digestion is carried out in a closed environment, the environmental impact is relatively small, and it has great advantages in the impact on the surrounding environment and the utilization of the final product, representing the current mainstream development direction. [0003] Because anaerobic digestion technology only works on organic matter, and kitchen waste is a mixture of organic matter and non-...
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