CN111484224A

CN111484224A - Method and system for manufacturing anti-hardening ecological nutrient soil by using sludge

Info

Publication number: CN111484224A
Application number: CN202010155049.XA
Authority: CN
Inventors: 陈橹达; 关博仁
Original assignee: Hangzhou Emerson Environmental Protection Technology Co ltd
Current assignee: Hangzhou Emerson Environmental Protection Technology Co ltd
Priority date: 2020-03-09
Filing date: 2020-03-09
Publication date: 2020-08-04

Abstract

The invention relates to the technical field of waste treatment, in particular to a method for manufacturing anti-hardening ecological nutrient soil by using sludge and a biological treatment system. The method comprises a sludge pretreatment step, an organic matter pre-fermentation treatment step, a biological treatment step and a post-treatment step. The ecological nutrient soil obtained by the biological treatment method provided by the invention has better fertility and is suitable for growth of urban green plants, and the sludge material added with the soil leavening agent and the sludge heavy metal passivation adsorbent is used as a manufacturing material of the ecological nutrient soil, so that the hardening phenomenon of the prepared ecological nutrient soil can be effectively prevented.

Description

Method and system for manufacturing anti-hardening ecological nutrient soil by using sludge

Technical Field

The invention relates to the technical field of waste treatment, in particular to a method and a system for manufacturing anti-hardening ecological nutrient soil by using sludge.

Background

The domestic sewage is treated, meanwhile, a large amount of domestic sewage sludge is inevitably generated, and the agriculture and forestry organic wastes are also a problem which puzzles various cities at present, so that the method for preparing the ecological nutrient soil by mixing the agriculture and forestry organic wastes with the sludge as the raw material is a better direction for solving the problem.

Aiming at the problem, the prior art also discloses a plurality of technical schemes for recycling the sludge, but the treatment system in the prior art has low drying efficiency and poor dewatering effect when treating the sludge, and the prepared nutrient soil has low fertility and low recycling value.

For example, the chinese patent application discloses a method for manufacturing ecological nutrient soil for cultivation using urban solid waste [ application No.: 201710377093.3], the invention application comprises the steps of: the method comprises the following steps: mechanically crushing the organic matter raw material, uniformly stirring and mixing, storing under the conditions of light and constant humidity, and simultaneously adding an inoculant into the organic matter raw material for pre-fermentation treatment to obtain a pre-fermented organic matter raw material; step two: uniformly mixing different types of sludge to obtain sludge raw materials, and putting the sludge raw materials into a drying bin for hot air drying, wherein the temperature of the sludge raw materials is 50-60 ℃ in the air drying process to obtain air-dried sludge; step three: placing the air-dried sludge in a microwave device for ultrasonic sterilization and secondary drying, wherein the temperature of the air-dried sludge is 80-90 ℃ in the drying process to obtain dried sludge; step four: cooling the dried sludge to 50-60 ℃, putting the pre-fermented organic matter raw material and the dried sludge obtained in the step one into a stirrer according to the mass ratio of 0.5-3:10, and fully stirring and uniformly mixing to obtain a mixture; step five: placing the mixture in a cultivation bin, and carrying out aerobic fermentation for 12-36h to obtain a fermented material; step six: and (3) placing the fermented material in a semi-finished product cooked material bin for curing for more than 3 days, uniformly crushing the cured material, and discharging to obtain the ecological nutrient soil.

The present invention provides a method for converting municipal waste into an ecological culture medium, but it does not solve the above problems.

Disclosure of Invention

The invention aims to solve the problems and provides a method for manufacturing anti-hardening ecological nutrient soil by utilizing sludge, which has high water removal efficiency and good water removal effect during sludge treatment.

The invention also aims to solve the problems and provide a system for manufacturing anti-hardening ecological nutrient soil by utilizing sludge, which has high water removal efficiency and good water removal effect during sludge treatment.

In order to achieve the purpose, the invention adopts the following technical scheme:

a method for manufacturing anti-hardening ecological nutrient soil by using sludge comprises the following steps:

A. sludge pretreatment: adding ingredients including a soil swelling agent and a sludge heavy metal passivation adsorbent into the sludge raw material, uniformly mixing the sludge raw material and the ingredients in a mixing tank to obtain a sludge material, then performing microwave decomposition on the sludge material, and performing heat superposition and water removal on the sludge material subjected to microwave decomposition to obtain a pretreated sludge material with a water content suitable for biological treatment; the sludge raw material is sludge obtained after being treated by a flocculating agent, the soil leavening agent is used for loosening the sludge raw material, the sludge heavy metal passivation adsorbent is used for adsorbing heavy metals in the sludge raw material, and the soil leavening agent and/or the sludge heavy metal passivation adsorbent can reduce or eliminate the hardening phenomenon of the pretreated sludge material; the water content of the sludge raw material is 70-90%, and the water content of the pretreated sludge material is 40-50%;

B. organic matter pre-fermentation treatment: mechanically crushing an organic material to a particle size of 5-20mm, adjusting the water content to 20% -50% to obtain an organic raw material, and adding an EM microbial inoculum for pre-fermentation for 12-36h to obtain a pre-fermented organic raw material; wherein the addition mass of the EM microbial inoculum is 0.3-0.8% of the mass of the organic matter raw material;

C. biological treatment: fully stirring the pretreated sludge material and the organic matter raw material subjected to the pre-fermentation treatment according to the mass ratio of 0.5-3:10 to prepare a granular biological treatment mixture, implanting microorganism bacteria including aerobic mesophilic bacteria and thermophilic bacteria into the biological treatment mixture, then placing the biological treatment mixture in a biological treatment bin, heating the biological treatment mixture in the biological treatment bin to be over 65 ℃ within 20-28 hours, standing for 2-4 days at a temperature above 65 ℃, then turning over the biological treatment mixture, cooling to room temperature, standing for continuous heating, aerating and adding oxygen into the biological treatment bin when the temperature is over 65 ℃ again to form micro high-pressure inner cavities in each strip-shaped granular biological treatment mixture respectively, and leading airflow containing water vapor and carbon dioxide out of the biological treatment bin in the aeration and oxygen adding process, outputting the biological treatment mixture to a biological treatment bin after 1-2 days of aeration and oxygenation treatment, then sending the biological treatment mixture to a crusher for crushing to obtain a powdery biological treatment product, and sending the biological treatment product to a biological stabilization bin for standing for 1-3 days at room temperature and normal pressure for later use;

D. and (3) post-treatment: and granulating the biological treatment product in a powdery form by a granulator to obtain the ecological nutrient soil.

In the method for manufacturing the anti-hardening ecological nutrient soil by using the sludge, the mass of the soil bulking agent is 1-5% of the mass of the sludge raw material; the soil leavening agent comprises 20-40 parts by weight of crushed corn straws, 10-20 parts by weight of crude coconut coir, 10-15 parts by weight of ammonium bicarbonate, 1-3 parts by weight of calcium oxide and 5-15 parts by weight of hydroxypropyl cellulose; the mass of the sludge heavy metal passivation adsorbent is 1-5% of the mass of the sludge raw material; the sludge heavy metal passivation adsorbent comprises 2-6 parts by weight of Halobacterium jilantaiense, 5-20 parts by weight of aspartic acid, 5-20 parts by weight of glutamic acid and 6-18 parts by weight of EDTA.

In the method for manufacturing the anti-hardening ecological nutrient soil by using the sludge, the mass of the soil bulking agent is 3% of that of the sludge raw material; the soil leavening agent comprises 30 parts of crushed corn straws, 15 parts of crude coconut coir, 12 parts of ammonium bicarbonate, 2 parts of calcium oxide and 10 parts of hydroxypropyl cellulose by mass; the mass of the sludge heavy metal passivation adsorbent is 3% of that of the sludge raw material; the sludge heavy metal passivation adsorbent comprises 4 parts of halophilus giraldii, 13 parts of aspartic acid, 13 parts of glutamic acid and 12 parts of EDTA (ethylene diamine tetraacetic acid) in parts by mass.

In the method for manufacturing the anti-hardening ecological nutrient soil by using the sludge, the ingredients also comprise 3-8 parts by mass of ammonium dodecyl sulfate and 3-8 parts by mass of oxidant; when the ingredients are added into the sludge, the soil swelling agent is added, the ammonium dodecyl sulfate is added, the sludge heavy metal passivation adsorbent is added, and the oxidant is added.

In the method for manufacturing the anti-hardening ecological nutrient soil by using the sludge, microwave decomposition is carried out in a closed box body, microwave decomposition is carried out in a transmission process by adopting microwave decomposition transmission belts which are sequentially connected from top to bottom end, a wind power circulation system is connected to the closed box body so as to lead hot gas with water vapor generated in the microwave decomposition process out of the upper part of the closed box body, the hot gas is cooled by a heat exchanger of the wind power circulation system, then the air flow is conveyed to a compressor of the wind power circulation system, the air flow is heated and then returned into the closed box body from the lower part of the closed box body, condensed water obtained by the heat exchanger of the wind power circulation system is discharged out of the closed box body, and high-level oxidation is simultaneously realized under the action of an oxidant in the microwave decomposition process so as to; the sludge material subjected to microwave decomposition is transmitted to a heat-stacking material transmission belt located below a microwave decomposition transmission belt in a closed box body, the heat-stacking material transmission belt receives the sludge material output by the microwave decomposition transmission belt, air flow heated by a compressor of a wind power circulation system enters the closed box body from the lower side of the heat-stacking material transmission belt, the heat-stacking temperature of the sludge material is 90-110 ℃ in the transmission process of the sludge material, water vapor generated in the heat-stacking process is upwards transmitted by the air flow and is led out from the upper portion of the closed box body through the microwave decomposition transmission belt, and pasteurization is performed in the heat-stacking water removal process.

In the method for manufacturing the anti-hardening ecological nutrient soil by using the sludge, the organic matter raw material comprises cellulosic biological waste and/or animal waste, the cellulosic biological waste comprises one or more of straws, plant litters, branch trimmers, lawn trimmers, wastes in the food production process, agricultural wastes, landscaping wastes and plant humus, and the animal waste comprises one or more of chicken manure, duck manure and cattle manure.

In the method for manufacturing the anti-hardening ecological nutrient soil by using the sludge, the biological treatment bin is communicated with the deodorization bin through a centrifugal fan, a spraying layer capable of spraying the deodorization liquid is arranged at the top of the deodorization bin, and a drain valve capable of being opened and closed is arranged at the bottom of the deodorization bin; the deodorant solution is a plant extract deodorant; the biological treatment bin is internally provided with a plurality of temperature sensors distributed at different positions and a plurality of pressure sensors distributed at different positions so as to monitor the temperature and oxygen changes in the biological treatment bin in real time, the temperature sensors and the pressure sensors are connected with a controller, and the controller is connected with an air blower for aeration and oxygenation so as to adjust the air delivery volume of the air blower in real time.

A system adopting the method for manufacturing the anti-hardening ecological nutrient soil by utilizing the sludge comprises a sludge treatment system and a biological treatment system which are mutually communicated, wherein the sludge treatment system comprises a batching tank, a batching stirring mechanism is arranged in the batching tank, a raw material bin is connected to an outlet of the batching tank, a discharging mechanism is arranged at the bottom of the raw material bin, the discharging end of the discharging mechanism is connected with a closed box body, a plurality of microwave decomposition transmission belts which are sequentially carried from top to bottom are arranged in the closed box body, one end of the uppermost microwave decomposition transmission belt is positioned under the discharging end of the discharging mechanism, a stacked heat material transmission belt is arranged under the lowermost microwave decomposition transmission belt, a microwave generating device which is positioned at the periphery of the microwave decomposition transmission belt is arranged in the closed box body, and a wind power circulation system is connected to the closed box body, the air inlet of the wind power circulating system is positioned at the upper part of the closed box body, and the air outlet of the wind power circulating system is positioned at the lower part of the closed box body and below the microwave decomposition transmission belt; the biological treatment system comprises a stirrer and a biological treatment bin which are communicated with the closed box body, the bottom of the stirrer is provided with a discharging mechanism which shapes the biological treatment mixture into strip-shaped particles and outputs the particles, the discharging mechanism is connected with the biological treatment bin through a transmission mechanism, a microorganism material dispenser is arranged above the transmission mechanism, the biological treatment bin comprises a bin body, a turning and throwing mechanism is arranged in the bin body, an air blower and a centrifugal fan are connected on the bin body, a discharging mechanism is arranged at the bottom of the bin body, a crusher is arranged below the unloading mechanism and is connected with the biological stabilization bin through a powder conveying mechanism, the biological treatment bin is communicated with the deodorization bin through a centrifugal fan, a spraying layer capable of spraying deodorization liquid is arranged at the top of the deodorization bin, and a liquid discharge valve capable of being opened and closed is arranged at the bottom of the deodorization bin.

In foretell system of utilizing mud to make ecological nutrition soil of preventing hardening, wind circulation system includes closed side case, closed side case upper portion and lower part link up with closed box upper portion and lower part respectively mutually, are equipped with heat exchanger on closed side case upper portion, closed side case lower part is equipped with the compressor, the compressor links to each other with closed box lower part, is equipped with a plurality of ventilation holes that are located closed box lateral wall between the upper and lower adjacent microwave decomposition transmission band, ventilation hole one end and closed box intercommunication, the other end and closed side case intercommunication are equipped with the drainage fan that introduces the air current in the closed box into the heat exchanger department in the closed side case in each ventilation hole respectively.

In the system for manufacturing the anti-hardening ecological nutrient soil by using the sludge, a plurality of temperature sensors and a plurality of pressure sensors are arranged in the biological treatment bin, the temperature sensors are distributed at different positions, the pressure sensors are distributed at different positions, so as to monitor the temperature and oxygen change in the biological treatment bin in real time, the temperature sensors and the pressure sensors are connected with a controller, and the controller is connected with an air blower for aeration and oxygenation so as to adjust the air delivery volume of the air blower in real time.

Compared with the prior art, the invention has the advantages that:

1. the ecological nutrient soil obtained by the biological treatment method provided by the invention has better fertility and is suitable for urban green plant growth.

2. The sludge material added with the soil leavening agent and the sludge heavy metal passivation adsorbent is used as the manufacturing material of the ecological nutrient soil, so that the hardening phenomenon of the manufactured ecological nutrient soil can be effectively prevented.

3. The invention has simple structure and convenient treatment, and the waste gas generated in the treatment process is collected and treated in a centralized way, thereby being green and environment-friendly.

4. The microwave sludge dewatering device comprises a microwave decomposition conveying belt and a heat-superposed material conveying belt, sludge is subjected to microwave decomposition and then heat superposition for dewatering, and the dewatering device is high in dewatering efficiency and good in dewatering effect.

5. The sludge drying device is simple and reliable in structure, waste gas generated after sludge drying can be recycled, energy consumption is low, the sludge drying device is convenient to treat, the waste gas generated in the treatment process is collected and treated in a centralized manner, and the sludge drying device is green and environment-friendly.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of the structure of a biological treatment system;

FIG. 3 is a schematic diagram of the connections of the control system within the bioprocessing bin;

FIG. 4 is a schematic view of the structure of a sludge treatment system;

FIG. 5 is a schematic diagram of microwave decomposition and stacked heat water removal;

in the figure: the device comprises a sludge treatment system a, a biological treatment system b, a batching tank 1, a raw material bin 2, a discharging mechanism 3, a closed box body 4, a microwave decomposition conveying belt 5, a wind power circulation system 6, a heat exchanger 7, a compressor 8, a heat stacking material conveying belt 9, a drainage fan 10, a batching stirring mechanism 11, a spiral discharging rod 31, salient points 32, a vent hole 41, a closed side box 61, a condensed water discharging pipe 62, a filter screen 63, a stirrer 100, a discharging mechanism 200, a conveying mechanism 300, a microbial material dispenser 301, a biological treatment bin 400, a temperature sensor 401, a pressure sensor 402, a controller 403, a bin body 404, a blower 405, a biological stabilization bin 500, a deodorization bin 600, a spraying layer 700, a liquid discharge valve 800 and a centrifugal fan 900.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Example 1

This example provides a method for manufacturing anti-hardening ecological nutrient soil using sludge, as shown in figures 1-5, adding ingredients including a soil raising agent and a sludge heavy metal passivation adsorbent into sludge with the humidity of 90%, wherein the mass of the soil raising agent is 1% of that of the sludge raw material, the mass of the sludge heavy metal passivation adsorbent is 5 percent of the mass of the sludge raw material, the sludge and the ingredients are uniformly mixed in the batching tank 1, then the sludge is conveyed to a raw material bin 2, the sludge material entering the raw material bin 2 is extruded into a sheet shape by a discharging mechanism 3 at the bottom of the raw material bin 2, then the sheet-shaped sludge material is output, then, performing microwave decomposition on the sludge material, wherein the microwave decomposition can be realized by using a microwave generating device in the prior art, and the sludge material after microwave decomposition is subjected to heat superposition to remove water to obtain the sludge material with the water content of 40%; the sludge raw material is sludge obtained after being treated by a flocculating agent, the pretreated sludge material and the organic matter raw material after being treated by pre-fermentation are put into a stirrer 100 according to the mass ratio of 0.5:10 and are fully stirred, and the pre-fermentation treatment process of the organic matter raw material after being treated by pre-fermentation comprises the following steps: mechanically crushing the organic matter material to a particle size of 5mm, adjusting the water content to 50% to obtain an organic matter raw material, and adding an EM microbial inoculum for carrying out pre-fermentation treatment for 36 hours to obtain a pre-fermented organic matter raw material; wherein the adding mass of the EM microbial inoculum is 0.8% of the mass of the organic matter raw material, the sludge material contains a soil swelling agent and a sludge heavy metal passivation adsorbent and has a water content of 40%, the water content of the organic matter raw material is 20%, the discharging mechanism 200 of the stirrer 100 outputs a uniformly mixed strip-shaped granular biological treatment mixture, microbial bacteria including aerobic mesophilic bacteria and thermophilic bacteria are implanted into the biological treatment mixture in the process of transmitting the biological treatment mixture through the transmission mechanism 300, the biological treatment mixture is transmitted into the biological treatment bin 400, the mass of the microbial bacteria is 0.1% of the mass of the organic matter raw material, the biological treatment mixture in the biological treatment bin 400 is heated to 66 ℃ within 20 hours and kept standing for 2 days at 66 ℃, then the biological treatment mixture is turned over, cooled to room temperature and kept standing for continuous heating, when the temperature reaches 66 ℃ again, aerating and oxygenating the biological treatment bin 400 to form micro high-pressure inner cavities in the strip-shaped granular biological treatment mixture respectively, leading airflow containing water vapor and carbon dioxide out of the biological treatment bin 400 in the aeration and oxygenating process, outputting the biological treatment mixture out of the biological treatment bin 400 after 1 day of aeration and oxygenating treatment, then sending the biological treatment mixture into a crusher 900 for crushing to obtain a powdery biological treatment product, sending the biological treatment product into a biological stabilization bin 500 for standing for 1 day for later use, and granulating the powdery biological treatment product by a granulator to obtain the ecological nutrient soil.

The organic matter raw materials comprise cellulosic biological waste and/or animal manure, the cellulosic biological waste comprises one or more of straws, plant litters, branch trimmings, lawn trimmings, wastes in the food production process, agricultural wastes, garden greening wastes and plant humus, and the animal manure comprises one or more of chicken manure, duck manure and cattle manure.

The soil bulking agent comprises 20 parts by mass of crushed corn straws, 20 parts by mass of crude coconut husk, 15 parts by mass of ammonium bicarbonate, 3 parts by mass of calcium oxide and 15 parts by mass of hydroxypropyl cellulose; the sludge heavy metal passivation adsorbent comprises 2 parts by weight of Geranium altophilum, 20 parts by weight of aspartic acid, 20 parts by weight of glutamic acid and 18 parts by weight of EDTA, and when ingredients are added, the soil leavening agent and the sludge heavy metal passivation adsorbent are mixed and then added into the sludge raw material.

The calcium oxide generates calcium hydroxide after meeting water and emits heat, and the heat can decompose ammonium bicarbonate to generate gas, so that the porosity of the soil is improved.

Hydroxypropyl cellulose, abbreviated as HPC, is a white or pale yellow powder, tasteless, and flammable. The soil expanding agent is insoluble in benzene and ether at normal temperature, can absorb water and swell when meeting water, and can maintain the gaps in the soil by matching with crushed corn straws and crude coconut coir in the soil expanding agent.

The bacillus halodurans (Halobacterium jilantaiense) AC3CGMCC No.1594 belongs to the halophilus, the cell wall of the bacillus halodurans replaces the traditional peptidoglycan with glycoprotein, and the glycoprotein contains high-content acidic amino acid to form a negative charge region, so that sodium ions with positive charges can be attracted, the stability of the cell wall is maintained, and the cells are prevented from being cracked, so that the sodium ions can be adsorbed on the outer surface of the cell wall, and the hardening phenomenon of sludge in the treatment process is further avoided.

EDTA is ethylenediamine tetraacetic acid (CAS number: 60-00-4), and its chemical formula is C₁₀H₁₆N₂O₈White powder at normal temperature and pressure. It is a compound capable of reacting with Mg²⁺、Ca²⁺、 Mn²⁺、Fe²⁺The chelating agent combined with the divalent metal ions can form stable chelate with the heavy metal ions, thereby reducing the concentration of free heavy metal ions in the sludge.

Example 2

This example provides a method for manufacturing anti-hardening ecological nutrient soil using sludge, as shown in figures 1-5, adding ingredients including a soil raising agent and a sludge heavy metal passivation adsorbent into sludge with the humidity of 70%, wherein the mass of the soil raising agent is 5% of that of the sludge raw material, the mass of the sludge heavy metal passivation adsorbent is 1 percent of the mass of the sludge raw material, the sludge and the ingredients are uniformly mixed in the batching tank 1, then the sludge is conveyed to a raw material bin 2, the sludge material entering the raw material bin 2 is extruded into a sheet shape by a discharging mechanism 3 at the bottom of the raw material bin 2, then the sheet-shaped sludge material is output, then, performing microwave decomposition on the sludge material, wherein the microwave decomposition can be realized by using a microwave generating device in the prior art, and the sludge material after microwave decomposition is subjected to heat superposition to remove water to obtain the sludge material with the water content of 50%; the sludge raw material is sludge obtained after being treated by a flocculating agent, the sludge material after being pretreated and the organic material after being pretreated by fermentation are put into a stirrer 100 according to the mass ratio of 3:10 for fully stirring, and the pretreatment process of the organic material after being pretreated by fermentation comprises the following steps: mechanically crushing an organic material to the particle size of 20mm, adjusting the water content to 20% to obtain an organic raw material, and adding an EM microbial inoculum for carrying out pre-fermentation treatment for 12 hours to obtain a pre-fermented organic raw material; wherein the adding mass of the EM microbial inoculum is 0.3 percent of the mass of the organic matter raw material, the sludge material contains a soil swelling agent and a sludge heavy metal passivation adsorbent, the water content is 50 percent, the water content of the organic matter raw material is 50 percent, the discharging mechanism 200 of the stirrer 100 outputs a uniformly mixed strip-shaped granular biological treatment mixture, microbial strains including aerobic mesophilic bacteria and thermophilic bacteria are implanted in the process of transmitting the biological treatment mixture through the transmission mechanism 300, the biological treatment mixture is transmitted into the biological treatment bin 400, the mass of the microbial strains is 0.5 percent of the mass of the organic matter raw material, the biological treatment mixture in the biological treatment bin 400 is heated to 70 ℃ within 28 hours and kept standing for 4 days at 70 ℃, then the biological treatment mixture is turned over, cooled to room temperature and kept standing for continuous heating, when the temperature reaches 70 ℃ again, aerating and oxygenating the biological treatment bin 400 to form micro high-pressure inner cavities in the strip-shaped granular biological treatment mixture respectively, leading airflow containing water vapor and carbon dioxide out of the biological treatment bin 400 in the aeration and oxygenating process, outputting the biological treatment mixture out of the biological treatment bin 400 after 2 days of aeration and oxygenating treatment, then feeding the biological treatment mixture into a crusher 900 for crushing to obtain a powdery biological treatment product, feeding the biological treatment product into a biological stabilization bin 500 for standing for 1-3 days for later use, and granulating the powdery biological treatment product by a granulator to obtain the ecological nutrient soil.

The selection of the organic material was the same as in example 1 and therefore will not be described further.

The soil bulking agent comprises 40 parts by mass of crushed corn straws, 10 parts by mass of crude coconut husk, 10 parts by mass of ammonium bicarbonate, 1 part by mass of calcium oxide and 5 parts by mass of hydroxypropyl cellulose; the sludge heavy metal passivation adsorbent comprises 6 parts of Geranium altaicinoid bacteria, 5 parts of aspartic acid, 5 parts of glutamic acid and 6 parts of EDTA in parts by weight, and when ingredients are added, the soil leavening agent and the sludge heavy metal passivation adsorbent are mixed and then added into the sludge raw material.

Example 3

This example provides a method for manufacturing anti-hardening ecological nutrient soil using sludge, as shown in figures 1-5, adding ingredients including a soil raising agent and a sludge heavy metal passivation adsorbent into sludge with the humidity of 80%, wherein the mass of the soil raising agent is 3% of that of the sludge raw material, the mass of the sludge heavy metal passivation adsorbent is 3% of the mass of the sludge raw material, the sludge and the ingredients are uniformly mixed in the batching tank 1, then the sludge is conveyed to a raw material bin 2, the sludge material entering the raw material bin 2 is extruded into a sheet shape by a discharging mechanism 3 at the bottom of the raw material bin 2, then the sheet-shaped sludge material is output, then, performing microwave decomposition on the sludge material, wherein the microwave decomposition can be realized by using a microwave generating device in the prior art, and the sludge material after microwave decomposition is subjected to heat superposition to remove water to obtain the sludge material with the water content of 45%; the sludge raw material is sludge obtained after being treated by a flocculating agent, the sludge material after being pretreated and the organic material after being pretreated by fermentation are put into a stirrer 100 according to the mass ratio of 2:10 for fully stirring, and the pretreatment process of the organic material after being pretreated by fermentation comprises the following steps: mechanically crushing an organic material to a particle size of 15mm, adjusting the water content to 35% to obtain an organic raw material, and adding an EM microbial inoculum for pre-fermentation for 24 hours to obtain a pre-fermented organic raw material; wherein the adding mass of the EM microbial inoculum is 0.5 percent of the mass of the organic matter raw material, the sludge material contains a soil swelling agent and a sludge heavy metal passivation adsorbent, the water content is 45 percent, the water content of the organic matter raw material is 35 percent, the discharging mechanism 200 of the stirrer 100 outputs a uniformly mixed strip-shaped granular biological treatment mixture, microbial strains including aerobic mesophilic bacteria and thermophilic bacteria are implanted in the process of conveying the biological treatment mixture through the conveying mechanism 300, the biological treatment mixture is conveyed into the biological treatment bin 400, the mass of the microbial strains is 0.3 percent of the mass of the organic matter raw material, the biological treatment mixture in the biological treatment bin 400 is heated to 68 ℃ within 24 hours and kept standing for 3 days at 68 ℃, then the biological treatment mixture is turned over, cooled to room temperature and kept standing for continuous heating, when the temperature reaches 68 ℃ again, aerating and oxygenating the biological treatment bin 400 to form micro high-pressure inner cavities in the strip-shaped granular biological treatment mixture respectively, leading airflow containing water vapor and carbon dioxide out of the biological treatment bin 400 in the aeration and oxygenating process, outputting the biological treatment mixture out of the biological treatment bin 400 after 2 days of aeration and oxygenating treatment, then sending the biological treatment mixture into a crusher 900 for crushing to obtain a powdery biological treatment product, sending the biological treatment product into a biological stabilization bin 500 for standing for 2 days for later use, and granulating the powdery biological treatment product by a granulator to obtain the ecological nutrient soil.

The soil bulking agent comprises 30 parts by mass of crushed corn straws, 15 parts by mass of crude coconut husk, 12 parts by mass of ammonium bicarbonate, 2 parts by mass of calcium oxide and 10 parts by mass of hydroxypropyl cellulose; the sludge heavy metal passivation adsorbent comprises 4 parts of halotolerant bacillus gibsonii, 13 parts of aspartic acid, 13 parts of glutamic acid and 12 parts of EDTA (ethylene diamine tetraacetic acid) in parts by mass, and when ingredients are added, the soil leavening agent and the sludge heavy metal passivation adsorbent are mixed and then added into the sludge raw material.

Example 4

The embodiment provides a method for manufacturing anti-hardening ecological nutrient soil by using sludge, which is substantially the same as the method described in embodiment 3, and is different in that the ingredients of the ingredients, specifically, the ingredients comprise a soil leavening agent, a sludge heavy metal passivation adsorbent, ammonium dodecyl sulfate and an oxidant, wherein the soil leavening agent comprises 20 parts by weight of crushed corn straws, 20 parts by weight of coarse coconut husk, 15 parts by weight of ammonium bicarbonate, 3 parts by weight of calcium oxide and 15 parts by weight of hydroxypropyl cellulose; the sludge heavy metal passivation adsorbent comprises 2 parts by mass of halophilic bacillus giemcomitans, 20 parts by mass of aspartic acid, 20 parts by mass of glutamic acid and 18 parts by mass of EDTA, wherein the mass part of ammonium lauryl sulfate is 3 parts, the mass part of the oxidant is 8 parts, and when ingredients are added, the soil leavening agent, the sludge heavy metal passivation adsorbent, the ammonium lauryl sulfate and the oxidant are mixed and then added into the sludge raw material. The oxidant can be 5% hydrogen peroxide by mass, so that the hydrogen peroxide is heated and decomposed during heat superposition water removal, and the method is green and environment-friendly.

Ammonium dodecyl sulfate (CAS number: 2235-54-3) for regulating pH value of sludge and ensuring that Halobacterium jilantaiensis has good growth environment.

Example 5

The embodiment provides a method for manufacturing anti-hardening ecological nutrient soil by using sludge, which is substantially the same as the method described in embodiment 3, and is different in that the ingredients of the ingredients, specifically, the ingredients comprise a soil leavening agent, a sludge heavy metal passivation adsorbent and ammonium dodecyl sulfate, wherein the soil leavening agent comprises 40 parts by weight of crushed corn stalks, 10 parts by weight of crude coconut chaff, 10 parts by weight of ammonium bicarbonate, 1 part by weight of calcium oxide and 5 parts by weight of hydroxypropyl cellulose; the sludge heavy metal passivation adsorbent comprises 6 parts by mass of halophilic bacillus Giantopii, 5 parts by mass of aspartic acid, 5 parts by mass of glutamic acid and 6 parts by mass of EDTA, wherein the mass part of ammonium lauryl sulfate is 8 parts, the mass part of the oxidant is 3 parts, and when the ingredients are added, the soil leavening agent, the sludge heavy metal passivation adsorbent, the ammonium lauryl sulfate and the oxidant are mixed and then added into the sludge raw material.

Example 6

The embodiment provides a method for manufacturing anti-hardening ecological nutrient soil by using sludge, which is substantially the same as the method described in embodiment 3, and is different in that the ingredients of the ingredients, specifically, the ingredients comprise a soil leavening agent, a sludge heavy metal passivation adsorbent and ammonium dodecyl sulfate, wherein the soil leavening agent comprises 30 parts by weight of crushed corn stalks, 15 parts by weight of crude coconut chaff, 12 parts by weight of ammonium bicarbonate, 2 parts by weight of calcium oxide and 10 parts by weight of hydroxypropyl cellulose; the sludge heavy metal passivation adsorbent comprises 4 parts by mass of halophilic bacillus gibsonii, 13 parts by mass of aspartic acid, 13 parts by mass of glutamic acid and 12 parts by mass of EDTA, the mass part of ammonium lauryl sulfate is 5 parts by mass, and the mass part of the oxidant is 5 parts by mass.

Example 7

The embodiment provides a method for manufacturing anti-hardening ecological nutrient soil by using sludge, which is substantially the same as the method described in embodiment 3, and is different in the composition components and the adding mode of ingredients, specifically, the ingredients comprise a soil leavening agent, a sludge heavy metal passivation adsorbent and ammonium dodecyl sulfate, wherein the soil leavening agent comprises 30 parts by mass of crushed corn straws, 15 parts by mass of coarse coconut chaff, 12 parts by mass of ammonium bicarbonate, 2 parts by mass of calcium oxide and 10 parts by mass of hydroxypropyl cellulose; the sludge heavy metal passivation adsorbent comprises 4 parts by mass of halophilic bacillus gibsonii, 13 parts by mass of aspartic acid, 13 parts by mass of glutamic acid and 12 parts by mass of EDTA, 5 parts by mass of ammonium lauryl sulfate and 5 parts by mass of an oxidant, wherein when ingredients are added, a soil bulking agent is added into a sludge raw material, then ammonium lauryl sulfate is added, then the sludge heavy metal passivation adsorbent is added, and finally the oxidant is added.

Example 8

This embodiment provides a system for manufacturing anti-hardening eco-nutrition soil by using sludge in embodiments 1 to 7, and as shown in fig. 1 to 5, the system for manufacturing anti-hardening eco-nutrition soil by using sludge includes a sludge treatment system a and a biological treatment system b which are communicated with each other, the sludge treatment system a includes a batching tank 1, a batching and stirring mechanism 11 is disposed in the batching tank 1, a raw material bin 2 is connected to an outlet of the batching tank 1, a discharging mechanism 3 is disposed at the bottom of the raw material bin 2, a discharging end of the discharging mechanism 3 is connected to a closed box 4, a plurality of microwave decomposition transmission belts 5 are disposed in the closed box 4, the microwave decomposition transmission belts 5 are sequentially connected from top to bottom, one end of the microwave decomposition transmission belt 5 at the top is located right below the discharging end of the discharging mechanism 3, a thermal material transmission belt 9 is disposed below the microwave decomposition transmission belt 5 at the bottom, a microwave generating device positioned at the periphery of a microwave decomposition transmission belt 5 is arranged in the closed box body 4, a wind power circulating system 6 is connected on the closed box body 4, an air inlet of the wind power circulating system 6 is positioned at the upper part of the closed box body 4, an air outlet of the wind power circulating system 6 is positioned at the lower part of the closed box body 4 and is positioned below the microwave decomposition transmission belt 5, the biological treatment system b comprises a stirrer 100 and a biological treatment bin 400 which are communicated with the closed box body 4, a discharging mechanism 200 which shapes and outputs biological treatment mixture into strip-shaped particles is arranged at the bottom of the stirrer 100, the discharging mechanism 200 is connected with the biological treatment bin 400 through a transmission mechanism 300, a microorganism bacterium material dispenser 301 is arranged above the transmission mechanism 300, the biological treatment bin 400 comprises a bin body 404, and a turning and throwing mechanism is arranged in the bin body 404, the bin body 404 is connected with an air blower 405 and a centrifugal fan 900, the bottom of the bin body 404 is provided with an unloading mechanism, a crusher is arranged below the unloading mechanism, and the crusher is connected with the biostable bin 500 through a powder conveying mechanism.

When the device is used, sludge raw materials and ingredients are added into a mixing tank 1, an ingredient stirring mechanism 11 is started to stir uniformly and then transfer the mixture to a raw material bin 2, the mixture is extruded into a sheet shape through a discharging mechanism 3 at the bottom of the raw material bin 2 and then the sheet-shaped sludge material is output into a closed box 4, the sludge material is transported on a microwave decomposition transmission belt 5, the sludge material sequentially passes through the microwave decomposition transmission belt 5 and a heat overlapping material transmission belt 9, in the transmission process, high-temperature drying gas compressed by a compressor 8 is sent to the bottom of the closed box 4, the high-temperature drying gas sequentially contacts with the sludge material on the heat overlapping material transmission belt 9 and the microwave decomposition transmission belt 5 and then takes away water to form low-temperature damp-heat gas, the low-temperature damp-heat gas circulates through a wind power circulation system 6 and enters the compressor 8 again for compression and heating after being condensed and, then the sludge material and the organic matter material after the microwave decomposition are fed into the stirrer 100 to be fully stirred, the sludge material and the organic matter material are discharged to the transmission mechanism 300 through the discharge mechanism 200 and are transmitted into the biological treatment bin 400 by the transmission mechanism 300, in the transmission process, the microbial material dispenser 301 puts the microbial material into the material on the transmission mechanism 300, the microbial material can comprise aerobic mesophilic bacteria and thermophilic bacteria, the transmission mechanism 300 can select a transmission device in the prior art, such as a transmission belt, to add the microbial material into the biological treatment bin 400, after the temperature is raised and maintained for a period of time, the turning mechanism arranged in the bin body 404 turns over and throws the mixture in the biological treatment bin 400, when the temperature is raised to the previous heat preservation temperature after the turning is finished, the gas is blown into the mixer in the biological treatment bin 400 to be aerated and oxygenated, the biological treatment product is crushed by a crusher to obtain a biological treatment product, and the biological treatment product is granulated by a granulator to obtain the ecological nutrient soil, so the device comprises a microwave decomposition conveying belt 5 and a heat-superposed material conveying belt 9, sludge is subjected to microwave decomposition and then is subjected to heat superposition for water removal, the water removal efficiency is high, the water removal effect is good, meanwhile, waste gas generated after sludge drying can be recycled, the energy consumption is low, the treatment is convenient, the waste gas generated in the treatment process is collected and concentrated, and the device is green and environment-friendly.

As shown in fig. 2, the biological treatment chamber 400 is communicated with the deodorization chamber 600 through a centrifugal fan 900, a spraying layer 700 capable of spraying a deodorization liquid is arranged at the top of the deodorization chamber 600, the spraying layer 700 can be a shower head structure in the prior art, a drain valve 800 capable of being opened and closed is arranged at the bottom of the deodorization chamber 600, waste gas generated during aeration oxygenation treatment in the biological treatment chamber 400 is conveyed to the deodorization chamber 600 through the centrifugal fan 900, the spraying layer 700 at the top of the deodorization chamber 600 sprays the deodorization liquid for deodorization, the deodorization liquid can be water containing active carbon, the used deodorization liquid can be discharged through the drain valve 800 and recycled after treatment, so that the biological treatment chamber is simple in structure and convenient to treat, and waste gas generated in the treatment process is collected and concentrated for treatment, thereby being environment-friendly.

Preferably, still include circulation mechanism, circulation mechanism one end is linked together through flowing back valve 800 and deodorization storehouse 600, and the other end is linked together with spraying layer 700, and specifically speaking, circulation mechanism includes the stirred tank who is linked together with flowing back valve 800, and the stirred tank lower extreme is equipped with the liquid outlet, and the liquid outlet is linked together with the inside pressurization filter equipment that is equipped with the filter screen, spraying layer 700 and being linked together with pressurization filter equipment through the infusion pipeline, the infusion pipeline is located the filter screen below with pressurization filter equipment's intercommunication point.

When the device is used, the deodorizing liquid with dissolved and adsorbed waste gas is discharged to the stirring kettle through the liquid discharge valve 800, the stirring kettle is stirred to enable the waste gas to be adsorbed to the activated carbon, the mixed liquid is discharged into the pressurizing and filtering device through the liquid outlet after stirring, the liquid is filtered through the filter screen, the liquid above the filter screen can be pressurized through the pressurizing pump arranged in the pressurizing and filtering device to increase the filtering speed, and the filtered liquid enters the spraying layer 700 through the liquid conveying pipeline and is mixed with new active carbon, so that the device can recycle the deodorizing liquid and save water resources.

Wherein, the odor liquid is water mixed with activated carbon, the mass fraction of the activated carbon is less than 1%, and preferably, the mass fraction of the activated carbon is 0.5-0.8%, so that the waste gas can be fully adsorbed, and the activated carbon can be conveniently filtered and removed.

As shown in fig. 3, a plurality of temperature sensors 401 distributed at different positions and a plurality of pressure sensors 402 distributed at different positions are arranged in the biological treatment chamber 400 to monitor the temperature and oxygen changes in the biological treatment chamber 400 in real time, the temperature sensors 401 and the pressure sensors 402 are both connected to a controller 403, the controller 403 is connected to a blower 405 for aeration and oxygenation to adjust the air output of the blower 405 in real time, the temperature sensors 401 and the pressure sensors 402 can be selected from sensors capable of performing corresponding functions in the prior art, the temperature sensors 401 and the pressure sensors 402 monitor the temperature and pressure changes in the biological treatment chamber 400 and feed back the temperature and pressure changes to the controller 403 in time, and the controller 403 controls the blower 405 to adjust the aeration and oxygenation rates so that the temperature and pressure in the biological treatment chamber 400 are within suitable temperature and pressure ranges.

As shown in fig. 4 and 5, the wind power circulation system 6 includes a closed side box 61, the upper and lower parts of the closed side box 61 are respectively communicated with the upper and lower parts of the closed box 4, a heat exchanger 7 is arranged on the upper part of the closed side box 61, a compressor 8 is arranged on the lower part of the closed side box 61, and the compressor 8 is connected with the lower part of the closed box 4; the discharging mechanism 3 comprises at least two spiral discharging rods 31 which are arranged in parallel and adjacently, the spiral discharging rods 31 extrude the uniformly mixed sludge raw materials into sheet-shaped sludge materials, and a plurality of salient points 32 are respectively arranged on threads of the spiral discharging rods 31 so that a plurality of vent holes are distributed on the sheet-shaped sludge materials, and the air permeability and the fluffiness of the sludge materials are improved.

Preferably, the periphery of the stacked hot material conveying belt 9 is provided with a pasteurization device, and the pasteurization device can be a pasteurization machine in the prior art, so that the operation of sterilizing the sludge material is completed while the stacked hot material conveying belt is used for removing water.

As shown in fig. 5, a filter screen 63 and a condensed water discharge pipe 62 are provided below the heat exchanger 7, the filter screen 63 filters and removes soil particles entrained by the gas, and the condensed water discharge pipe 62 discharges condensed water.

As shown in fig. 5, a plurality of vent holes 41 are formed in the side wall of the closed type box body 4 between the upper and lower adjacent microwave decomposition transmission belts 5, one end of each vent hole 41 is communicated with the closed type box body 4, the other end of each vent hole is communicated with the closed type side box body 61, a drainage fan 10 for introducing airflow in the closed type box body 4 into the heat exchanger 7 in the closed type side box body 61 is arranged in each vent hole 41, the communication degree between the closed type box body 4 and the closed type side box body 61 can be improved by the drainage fan 10, and the fluency of the gas circulation process is ensured.

The working principle of the invention is as follows: when the device is used, a sludge raw material and ingredients are added into the ingredient tank 1, the ingredient stirring mechanism 11 is started to stir uniformly and then transfer the sludge raw material to the raw material bin 2, the sludge raw material is extruded into a sheet shape through the spiral discharging rod 31 at the bottom of the raw material bin 2 and then output the sheet-shaped sludge material into the closed box 4, the sludge material is transported on the microwave decomposition transmission belt 5, the sludge material sequentially passes through the microwave decomposition transmission belt 5 and the overlapped heat material transmission belt 9, in the transmission process, high-temperature dry gas compressed by the compressor 8 is sent to the bottom of the closed box 4, the high-temperature dry gas is sequentially contacted with the overlapped heat material transmission belt 9 and the sludge material on the microwave decomposition transmission belt 5 and then takes away water to become low-temperature damp-hot gas, the low-temperature damp-hot gas is drained into the closed side box 61 through the drainage fan 10 in the, the separated condensed water is discharged from the condensed water discharge pipe 62, the gas is filtered by the filter screen 63, and then enters the compressor 8 again for compression and heating, and then is sent to the bottom of the closed box 4 again to complete a cycle, the sludge material and the organic matter material after microwave decomposition are added into the stirrer 100 for full stirring, and then are discharged to the transmission mechanism 300 through the discharging mechanism 200, and are transmitted to the biological treatment bin 400 by the transmission mechanism 300, during the transmission process, the microbial material feeder 301 feeds the microbial material on the transmission mechanism 300, the microbial material can comprise aerobic mesophilic bacteria and thermophilic bacteria, the transmission mechanism 300 can adopt the transmission device in the prior art, such as a conveyor belt, to feed the microbial material into the biological treatment bin 400, after the temperature is raised and preserved for a period of time, the turning mechanism arranged in the bin body 404 turns over the mixture in the biological treatment bin 400, when the temperature is raised to the previous heat preservation temperature after the throwing and turning are finished, the blower 405 blows gas to carry out aeration and oxygenation treatment on the mixture in the biological treatment bin 400, the temperature sensor 401 and the pressure sensor 402 monitor the temperature and pressure change in the biological treatment bin 400 and feed back the temperature and pressure change to the controller 403 in time, the controller 403 controls the blower 405 to adjust the aeration and oxygenation speed, waste gas generated during the aeration and oxygenation treatment in the biological treatment bin 400 is conveyed to the deodorization bin 600 through the centrifugal fan 900, the spraying layer 700 on the top of the deodorization bin 600 sprays deodorization liquid for deodorization, the waste gas is crushed by the crusher to obtain a biological treatment product, and the biological treatment product is granulated by the granulator to obtain the ecological nutrient soil, so the ecological nutrient soil treatment device comprises a microwave decomposition conveying belt 5 and a heat overlapping material conveying belt 9, sludge is subjected to microwave decomposition and then overlapped with heat and water removal, the water removal efficiency is high, the water removal effect is good, simultaneously, the waste gas behind the dry mud can reuse, and the power consumption is lower, and handles conveniently, and the waste gas that produces all collects and centralized processing in the processing procedure, green.

Comparative example 1

The comparative example provides a method for manufacturing anti-hardening ecological nutrient soil by using sludge, wherein a commercially available soil bulking agent is added into the sludge with the humidity of 80% to serve as a material, the mass of the soil bulking agent is 3% of the mass of a sludge raw material, the sludge and the material are uniformly mixed in a material mixing tank 1 and then conveyed to a raw material bin 2, the sludge material entering the raw material bin 2 is extruded into a sheet shape by a discharging mechanism 3 at the bottom of the raw material bin 2 and then the sheet-shaped sludge material is output, then the sludge material is subjected to microwave decomposition, the microwave decomposition can be realized by a microwave generating device in the prior art, and the sludge material subjected to microwave decomposition is subjected to heat superposition to remove water to obtain the sludge material with the water content of 45%; the sludge raw material is sludge obtained after being treated by a flocculating agent, the sludge material after being pretreated and the organic material after being pretreated by fermentation are put into a stirrer 100 according to the mass ratio of 2:10 for fully stirring, and the process of the pretreatment of the organic material after being pretreated by fermentation comprises the following steps: mechanically crushing the organic matter material to the grain size of 15mm, adjusting the water content to 35% to obtain an organic matter raw material, and then adding EM microbial inoculum for pre-fermentation treatment for 24 hours to obtain a pre-fermented organic matter raw material; wherein the adding mass of the EM microbial inoculum is 0.5 percent of the mass of the organic matter raw material, the sludge material contains a soil swelling agent and has a water content of 45 percent, the water content of the organic matter raw material is 35 percent, the discharging mechanism 200 of the stirrer 100 outputs a uniformly mixed strip-shaped granular biological treatment mixture, microbial bacteria including aerobic mesophilic bacteria and thermophilic bacteria are implanted into the biological treatment mixture in the process of conveying the biological treatment mixture through the conveying mechanism 300, the biological treatment mixture is conveyed into the biological treatment bin 400, the mass of the microbial bacteria is 0.3 percent of the mass of the organic matter raw material, the biological treatment mixture in the biological treatment bin 400 is heated to 68 ℃ within 24 hours and is kept standing for 3 days at the temperature of 68 ℃, then the biological treatment mixture is turned over to be cooled to room temperature and is kept standing for further heating, and when the temperature reaches 68 ℃ again, aeration and oxygen are added into the biological treatment bin 400 to ensure that each strip-shaped granular biological treatment mixture is subjected to biological treatment Micro high-pressure inner cavities are respectively formed in the mixture, air flow containing water vapor and carbon dioxide is led out of the biological treatment bin 400 in the aeration and oxygenation process, the biological treatment mixture is output to the biological treatment bin 400 after 2 days of aeration and oxygenation, then the biological treatment mixture is sent into a crusher 900 to be crushed, biological treatment products in a powder form are obtained, the biological treatment products are sent into a biological stabilization bin 500 to be kept stand for 2 days, and the biological treatment products in the powder form are granulated through a granulator to obtain the ecological nutrient soil.

Comparative example 2

The comparative example provides a method for manufacturing anti-hardening ecological nutrient soil by using sludge, ingredients including a soil leavening agent and a sludge heavy metal passivation adsorbent are added into the sludge with the humidity of 80%, the mass of the soil leavening agent is 3% of that of a sludge raw material, the mass of the sludge heavy metal passivation adsorbent is 3% of that of the sludge raw material, the sludge and the ingredients are uniformly mixed in a material mixing tank 1 and then conveyed to a raw material bin 2, the sludge material entering the raw material bin 2 is extruded into a sheet shape by a discharging mechanism 3 at the bottom of the raw material bin 2 and then output to the sheet-shaped sludge material, then the sludge material is subjected to microwave decomposition, the microwave decomposition can be realized by using a microwave generating device in the prior art, and the sludge material subjected to microwave decomposition is subjected to superposition heat dehydration to obtain the sludge material with the water content of 45%; the sludge raw material is sludge obtained after being treated by a flocculating agent, the sludge material and the organic matter raw material which are pretreated are put into a stirrer 100 according to the mass ratio of 2:10 and are fully stirred, the sludge material contains a soil swelling agent and a sludge heavy metal passivation adsorbent, the water content of the sludge material is 45 percent, the water content of the organic matter raw material is 35 percent, a discharging mechanism 200 of the stirrer 100 outputs a uniformly mixed strip-shaped granular biological treatment mixture, a microbial material comprising aerobic mesophilic bacteria and thermophilic bacteria is implanted in the process that the biological treatment mixture is transmitted through a transmission mechanism 300 and is transmitted into a biological treatment bin 400, the mass of the microbial material is 0.3 percent of that of the organic matter raw material, the biological treatment mixture in the biological treatment bin 400 is aerated and oxygenated to enable micro high-pressure cavities to be respectively formed in the strip-shaped granular biological treatment mixture, and in the aeration and oxygenation process, air flow containing water vapor and carbon dioxide is led out of the biological treatment bin 400, the biological treatment mixture is output to the biological treatment bin 400 after 2 days of aeration and oxygenation treatment, then the biological treatment mixture is sent into a crusher 900 to be crushed to obtain a biological treatment product in a powdery form, the biological treatment product is sent into a biological stabilization bin 500 to be stood for 2 days for standby, and the biological treatment product in the powdery form is granulated by a granulator to obtain the ecological nutrient soil.

The soil bulking agent comprises 30 parts by mass of crushed corn straws, 15 parts by mass of crude coconut husk, 12 parts by mass of ammonium bicarbonate, 2 parts by mass of calcium oxide and 10 parts by mass of hydroxypropyl cellulose; the sludge heavy metal passivation adsorbent comprises 4 parts of halophilic bacillus Gilantana, 13 parts of aspartic acid, 13 parts of glutamic acid and 12 parts of EDTA (ethylene diamine tetraacetic acid) by mass, 5 parts of ammonium dodecyl sulfate and 5 parts of oxidant by mass, when ingredients are added, a soil bulking agent is added into sludge, the ammonium dodecyl sulfate is added, the sludge heavy metal passivation adsorbent is added, and finally the oxidant is added.

Application example 1

Ecological nutrient soil 1 was prepared in the method of comparative example 1 using the system described in example 8;

ecological nutrient soil 2 was prepared by the method of example 3 and using the system described in example 8;

ecological nutrient soil 3 was prepared by the method of example 6 and using the system described in example 8;

ecological nutrient soil 4 was prepared by the method of example 7 and using the system described in example 8;

the appearance of the ecological nutrient soil was observed and the maximum pressure in the ecological nutrient soil 1, the ecological nutrient soil 2, the ecological nutrient soil 3 and the ecological nutrient soil 4 was measured using a soil compactness meter manufactured by zengzhou android electronics ltd, respectively, and the results are shown in the following table:

and (4) analyzing results: from the experimental results in the table, the maximum pressure of the ecological nutrient soil 1 is obviously higher than 2-4 of the ecological nutrient soil, namely the compactness of the ecological nutrient soil 1 is the highest, and the surface of the ecological nutrient soil 1 can be observed to have a certain hardening phenomenon from the appearance, so that the pretreated sludge material provided by the invention has a better effect of preventing soil hardening, and the expected purpose of the invention is achieved.

Application example 2

Ecological nutrient soil 5 was prepared by the method of example 7 and using the system described in example 8;

respectively paving ecological nutrient soil 5 and 2-4 prepared in application example 1 into four areas with the same area, wherein the area paved with the ecological nutrient soil 2 is an A area, the area paved with the ecological nutrient soil 3 is a B area, the area paved with the ecological nutrient soil 4 is a C area, the area paved with the ecological nutrient soil 5 is a D area, and the quality of the nutrient soil in each area is the same. Randomly dividing the same batch of zoysia japonica seeds into four parts with equal mass, respectively sowing the four parts to four areas, collecting and drying zoysia japonica after 45 days, weighing the mass of the dried zoysia japonica, and the result is shown in the following table:

and (4) analyzing results: from the experimental results in the table, the dry weight of the zoysia japonica in the third area is about 20% -25% higher than that of the zoysia japonica in the fourth area, so the ecological nutrient soil obtained by the biological treatment method provided by the invention has better fertility, is suitable for urban green plant growth, achieves the expected purpose of the invention, and meanwhile, compared with the third area, the lower the soil hardening degree is, the more beneficial to plant growth is.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Although terms such as the sludge treatment system a, the biological treatment system b, the batching tank 1, the raw material bin 2, the discharge mechanism 3, the closed box 4, the microwave decomposition conveyor belt 5, the wind circulation system 6, the heat exchanger 7, the compressor 8, the heat overlapping material conveyor belt 9, the draught fan 10, the batching and stirring mechanism 11, the spiral discharge rod 31, the salient points 32, the ventilation holes 41, the closed side box 61, the condensed water discharge pipe 62, the filter screen 63, the stirrer 100, the discharge mechanism 200, the conveying mechanism 300, the microbial material dispenser 301, the biological treatment bin 400, the temperature sensor 401, the pressure sensor 402, the controller 403, the bin body 404, the blower 405, the biostabilization bin 500, the deodorization bin 600, the spraying layer 700, the liquid discharge valve 800, the centrifugal fan 900 and the like are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. A method for manufacturing anti-hardening ecological nutrient soil by using sludge is characterized by comprising the following steps:

A. sludge pretreatment: adding ingredients including a soil swelling agent and a sludge heavy metal passivation adsorbent into sludge raw materials, uniformly mixing the sludge raw materials and the ingredients in a mixing tank (1) to obtain sludge materials, then performing microwave decomposition on the sludge materials, and performing heat superposition and water removal on the sludge materials subjected to microwave decomposition to obtain pretreated sludge materials with water content suitable for biological treatment; the sludge raw material is sludge obtained after being treated by a flocculating agent, the soil leavening agent is used for loosening the sludge raw material, the sludge heavy metal passivation adsorbent is used for adsorbing heavy metals in the sludge raw material, and the soil leavening agent and/or the sludge heavy metal passivation adsorbent can reduce or eliminate the hardening phenomenon of the pretreated sludge material; the water content of the sludge raw material is 70-90%, and the water content of the pretreated sludge material is 40-50%;

C. biological treatment: fully stirring the pretreated sludge material and the organic matter raw material subjected to the pre-fermentation treatment according to the mass ratio of 0.5-3:10, preparing a granular biological treatment mixture, implanting microorganism bacteria including aerobic mesophilic bacteria and thermophilic bacteria into the biological treatment mixture, then placing the biological treatment mixture into a biological treatment bin (400), heating the biological treatment mixture in the biological treatment bin (400) to be over 65 ℃ within 20-28 hours, standing for 2-4 days at the temperature of over 65 ℃, turning over the biological treatment mixture, cooling to room temperature, standing for continuous heating, aerating and adding oxygen into the biological treatment bin (400) when the temperature is over 65 ℃ again to form micro high-pressure inner cavities in the biological treatment mixture of each strip-shaped granule, and leading air flow containing water vapor and carbon dioxide out of the biological treatment bin (400) in the aeration and oxygen adding processes, after aeration and oxygenation treatment for 1-2 days, outputting the biological treatment mixture to a biological treatment bin (400), then sending the biological treatment mixture to a crusher for crushing to obtain a biological treatment product in a powdery form, and sending the biological treatment product to a biological stabilization bin (500) for standing for 1-3 days at room temperature and normal pressure for later use;

2. The method for manufacturing anti-hardening ecological nutrient soil by using sludge according to claim 1, wherein the method comprises the following steps: the mass of the soil leavening agent is 1-5% of that of the sludge raw material; the soil leavening agent comprises 20-40 parts by weight of crushed corn straws, 10-20 parts by weight of crude coconut coir, 10-15 parts by weight of ammonium bicarbonate, 1-3 parts by weight of calcium oxide and 5-15 parts by weight of hydroxypropyl cellulose; the mass of the sludge heavy metal passivation adsorbent is 1-5% of the mass of the sludge raw material; the sludge heavy metal passivation adsorbent comprises 2-6 parts by weight of halophilus jilanthii, 5-20 parts by weight of aspartic acid, 5-20 parts by weight of glutamic acid and 6-18 parts by weight of EDTA.

3. The method for manufacturing anti-hardening ecological nutrient soil by using sludge as claimed in claim 2, wherein: the mass of the soil leavening agent is 3% of that of the sludge raw material; the soil raising agent comprises 30 parts by mass of crushed corn straws, 15 parts by mass of crude coconut coir, 12 parts by mass of ammonium bicarbonate, 2 parts by mass of calcium oxide and 10 parts by mass of hydroxypropyl cellulose; the mass of the sludge heavy metal passivation adsorbent is 3% of that of the sludge raw material; the sludge heavy metal passivation adsorbent comprises, by mass, 4 parts of halophilus jilantii, 13 parts of aspartic acid, 13 parts of glutamic acid and 12 parts of EDTA.

4. The method for manufacturing anti-hardening ecological nutrient soil by using sludge as claimed in claim 3, wherein: the ingredients also comprise 3-8 parts of ammonium dodecyl sulfate and 3-8 parts of oxidant by mass; when the ingredients are added into the sludge, the soil swelling agent is added, the ammonium dodecyl sulfate is added, the sludge heavy metal passivation adsorbent is added, and the oxidant is added.

5. The method for manufacturing anti-hardening ecological nutrient soil by using sludge according to claim 1, wherein the method comprises the following steps: the microwave decomposition is carried out in a closed box body (4) and microwave decomposition is carried out in the transmission process by adopting microwave decomposition transmission belts (5) which are sequentially connected from top to bottom end to end, the closed box body (4) is connected with a wind power circulating system (6) to lead hot gas with water vapor generated in the microwave decomposition process out from the upper part of the closed box body (4), the hot gas is cooled by a heat exchanger (7) of the wind power circulating system (6) and then the air flow is conveyed to a compressor (8) of the wind power circulating system (6) to be heated and then returned to the closed box body (4) from the lower part of the closed box body (4), and the condensed water obtained by the heat exchanger (7) of the wind power circulating system (6) is discharged out of the closed box body (4), in the microwave decomposition process, under the action of an oxidant, high-grade oxidation is simultaneously realized so as to mineralize organic matters in the sludge material; the sludge material after microwave decomposition is transmitted to a stacked hot material transmission belt (9) which is positioned below a microwave decomposition transmission belt (5) in a closed box body (4), the stacked hot material transmission belt (9) is used for receiving the sludge material output by the microwave decomposition transmission belt (5), the air flow heated by a compressor (8) of a wind power circulation system (6) enters the closed box body (4) from the lower part of the stacked hot material transmission belt (9), the sludge material is stacked in the transmission process, the stacked hot temperature of the sludge material is 90-110 ℃, the water vapor generated in the stacked hot process is upwards transmitted by the air flow and is led out from the upper part of the closed box body (4) through the microwave decomposition transmission belt (5), and pasteurization is carried out in the stacked hot water removal process.

6. The method for manufacturing anti-hardening ecological nutrient soil by using sludge according to claim 1, wherein the method comprises the following steps: the organic matter raw material comprises cellulosic biological waste and/or animal manure, the cellulosic biological waste comprises one or more of straws, plant litters, branch trimmings, lawn trimmings, wastes in the food production process, agricultural wastes, landscaping wastes and plant humus, and the animal manure comprises one or more of chicken manure, duck manure and cattle manure.

7. The method for manufacturing anti-hardening ecological nutrient soil by using sludge according to claim 1, wherein the method comprises the following steps: the biological treatment bin (400) is communicated with the deodorization bin (600) through a centrifugal fan (900), the top of the deodorization bin (600) is provided with a spraying layer (700) capable of spraying deodorization liquid, and the bottom of the deodorization bin (600) is provided with a liquid discharge valve (800) capable of being opened and closed; the deodorant solution is a plant extract deodorant; a plurality of temperature sensors (401) distributed at different positions and a plurality of pressure sensors (402) distributed at different positions are arranged in the biological treatment bin (400) to monitor the temperature and oxygen change in the biological treatment bin (400) in real time, the temperature sensors (401) and the pressure sensors (402) are both connected with a controller (403), and the controller (403) is connected with a blower (405) for aeration and oxygenation to adjust the air output of the blower (405) in real time.

8. A system for manufacturing anti-hardening eco-nutrition soil using sludge according to any one of claims 1 to 7, wherein: comprises a sludge treatment system (a) and a biological treatment system (b) which are mutually communicated, wherein the sludge treatment system (a) comprises a batching tank (1), a batching stirring mechanism (11) is arranged in the batching tank (1), a raw material bin (2) is connected with an outlet of the batching tank (1), a discharging mechanism (3) is arranged at the bottom of the raw material bin (2), the discharging end of the discharging mechanism (3) is connected with a closed box body (4), a plurality of microwave decomposition transmission belts (5) which are sequentially accepted from top to bottom are arranged in the closed box body (4), one end of the microwave decomposition transmission belt (5) at the top is positioned under the discharging end of the discharging mechanism (3), a heat overlapping material transmission belt (9) is arranged under the microwave decomposition transmission belt (5) at the bottom, and a microwave generating device which is positioned at the periphery of the microwave decomposition transmission belt (5) is arranged in the closed box body (4), the closed box body (4) is connected with a wind power circulating system (6), an air inlet of the wind power circulating system (6) is positioned at the upper part of the closed box body (4), and an air outlet of the wind power circulating system (6) is positioned at the lower part of the closed box body (4) and below the microwave decomposition conveying belt (5);

the biological treatment system (b) comprises a stirrer (100) and a biological treatment bin (400) which are communicated with a closed box body (4), the bottom of the stirrer (100) is provided with a discharge mechanism (200) which shapes biological treatment mixture into strip-shaped particles and outputs the strip-shaped particles, the discharge mechanism (200) is connected with the biological treatment bin (400) through a transmission mechanism (300), a microbial material dispenser (301) is arranged above the transmission mechanism (300), the biological treatment bin (400) comprises a bin body (404), a turning mechanism is arranged in the bin body (404), the bin body (404) is connected with an air blower (405) and a centrifugal fan (900), the bottom of the bin body (404) is provided with a discharge mechanism, a crusher is arranged below the discharge mechanism and is connected with the biological stabilization bin (500) through a powder transmission mechanism, the biological treatment bin (400) is communicated with the deodorization bin (600) through the centrifugal fan (900), the top of the deodorization bin (600) is provided with a spraying layer (700) which can spray deodorization liquid, and the bottom of the deodorization bin (600) is provided with a drain valve (800) which can be opened and closed.

9. The system for manufacturing anti-hardening ecological nutrient soil by using sludge according to claim 8, wherein: wind power circulation system (6) link up with closed box (4) upper portion and lower part respectively including closed side case (61), closed side case (61) upper portion and lower part are link up mutually, are equipped with heat exchanger (7) on closed side case (61) upper portion, closed side case (61) lower part is equipped with compressor (8), compressor (8) link to each other with closed box (4) lower part, are equipped with a plurality of ventilation holes (41) that are located closed box (4) lateral wall between upper and lower adjacent microwave decomposition transmission band (5), ventilation hole (41) one end and closed box (4) intercommunication, the other end and closed side case (61) intercommunication are equipped with drainage fan (10) of introducing the air current in closed box (4) into heat exchanger (7) department in closed side case (61) respectively in each ventilation hole (41).

10. The system for manufacturing anti-hardening ecological nutrient soil by using sludge according to claim 8, wherein: a plurality of temperature sensors (401) distributed at different positions and a plurality of pressure sensors (402) distributed at different positions are arranged in the biological treatment bin (400) to monitor the temperature and oxygen change in the biological treatment bin (400) in real time, the temperature sensors (401) and the pressure sensors (402) are both connected with a controller (403), and the controller (403) is connected with a blower (405) for aeration and oxygenation to adjust the air output of the blower (405) in real time.