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28-30 t/h industrial scale biofertilizer production unit project

The client of this 28-30 t/h biofertilizer production unit project is a bioenergy limited company, which was established in March 2019. The client invested 3 million US dollars to use the existing plant to build a "large-scale organic fertilizer manufacturing project". The project uses sludge and manure to produce organic fertilizer through aerobic fermentation.

28-30 t/h industrial scale biofertilizer production unit project

OVERVIEW

The client of this 28-30 t/h biofertilizer production unit project is a bioenergy limited company, which was established in March 2019. The client invested 3 million US dollars to use the existing plant to build a "large-scale organic fertilizer manufacturing project". The project uses sludge and manure to produce organic fertilizer through aerobic fermentation.

After the completion of the fertilizer unit project, it can produce 50,000 tons of green organic fertilizer and 10,000 tons of farmland organic fertilizer annually. The project started construction in April 2021 and was completed in July 2021.

  • Name:

    Large bio fertilizer unit

  • Country:

    China

  • Date:

    February 2021

  • Capacity:

    April 2021

  • Product Type:

    3-6mm pellets and powder

  • The install period:

    90 Days

  • Control Mode:

    Semi-automatic

  • Bio fertilizer unit cost:

    3 million USD

Construction content and layout

The factory area of the 28-30 t/h biofertilizer production unit project covers an area of 38666.86m², with a construction area of 12799.37m², of which:

The overall plan layout is clearly divided, each functional area is divided by passages, arranged according to the process flow and material conveying direction, the process route is short and fast, energy consumption is reduced, and the requirements of process flow, safe production, fire protection, maintenance, and transportation are met, and the flow of people and vehicles are separated. arrangement to ensure the safety of personnel. Therefore, the overall layout is more reasonable. (Find RICHI on Facebook)
bio fertilizer production unit Construction content and layout

The construction content of the 28-30 t/h biofertilizer production unit project includes main works, auxiliary works, public works and environmental protection works:

Main Raw and Auxiliary Materials

The followings are raw materials used in the 28-30 t/h biofertilizer production unit:

  1. Sludge: The consumption is 50,000t/a, the moisture content is about 60%, and the sludge from the domestic sewage treatment plant in the surrounding area and the pretreatment sludge from the water company are used.
  2. Animal manure: the consumption is 10,000t/a, the moisture content is 60%, and all animal manure is purchased from local farms.
  3. Peanut shells and straw chips: the consumption is 10000t/a.
  4. Fermentation bacteria (liquid): Consumption of 20t/a, the introduction of advanced Japanese strain stock solution, using pure natural high-efficiency strains and biologically active enzymes, after natural selection of strains, combined with advanced production and distribution methods, it can be directly As a starter, it is used for compost fermentation to promote the reproduction of other microorganisms in the raw materials, and it also has the function of biological deodorization.
  5. Deodorant (liquid): Consumption 20, using the principle of biological deodorization to spray deodorizing bacteria to remove odors.
  6. Quicklime: Consumption 2000, used for sterilization, deodorization, and raising the fermentation temperature.
  7. Packing bags: the annual consumption is 1.5 million.

Sludge source security

The sludge used in this 28-30 t/h biofertilizer production unit project mainly comes from domestic sewage treatment plants and surrounding areas, and the sludge from local domestic sewage treatment plants is given priority.

The animal manure used in this organic manure production plant project is mainly from the animal manure of local farmi. The sludge and animal manure are all transported in closed container vehicles to reduce the odor and leakage during transportation.

Before the raw material sludge used in this project enters the site, a batch of samples will be sampled by the sludge supplier every month and a company with testing qualifications will be entrusted to conduct testing. If the sludge is qualified, it will be transported to the plant of this project.
biofertilizer production unit

If heavy metals exceed the standard, the raw sludge of this batch will be rejected to ensure that all heavy metals in the sludge must meet the requirements of the "Mud Quality for Landscaping of Sludge Disposal in Urban Sewage Treatment Plants" (GBT 23486-2009).

Limits of heavy metal content in sludge

Cadmium<5
Total Chromium <600
Lead<300
Mercury<5
Arsenic<75
Copper<800
Zinc<2000
Nickel<100

Product plan

The 28-30 t/h biofertilizer production unit project produces green organic fertilizer with sludge as raw material and farmland organic fertilizer with animal manure as raw material.

Each fertilzier series is divided into two types: powder and pellet.

Greening organic fertilizer

Product name Production (t/a) Moisture content (%) Package Specifications
Powdered fertilizer 20000 40 Lined with plastic bag + woven bag, 40kg/bag
Pellet fertilizer 30000 40 Lined with plastic bag + woven bag, 40kg/bag

Note: All green organic fertilizer products produced by this organic fertilizer production line project are sold to companies with forestry certificates.

Farmland organic fertilizer

Product name Production (t/a) Moisture content (%) Package Specifications
Powdered fertilizer 5000 40 Lined with plastic bag + woven bag, 40kg/bag
Pellet fertilizer 5000 40 Lined with plastic bag + woven bag, 40kg/bag

The 28-30 t/h biofertilizer production unit project's farmland organic fertilizer implements the industry standard "Technical Specifications for Livestock and Poultry Manure Composting" of the Ministry of Agriculture:

Appearance indicators:

This product includes powder, spherical, no obvious mechanical magazines, uniform size, no rotten smell.

Technical indicators

Heavy metal indicators

Equipment for 28-30 t/h bio fertilizer production unit

Device name QTY
Forklift 4
Fermentation production line (including 1 turning machine and 4 sprayers) 2
Conveyor belt 4
Grinder 1
Fertilizer granulator 1
Packer 1
Automatic measuring scale 1
Fan 6
Odor removal device 1
Bag dust collector 1

Bio fertilizer unit production process design

Raw material preparation

The sludge used in the 28-30 t/h biofertilizer production unit project mainly comes from the surrounding areas. The sludge from the local domestic sewage treatment plant and the animal manure from the local farm are given priority. All of them are transported in closed container vehicles to reduce the odor and leakage during transportation.

Before the raw material sludge used in this project enters the site, a batch of raw material sludge is sampled every month and entrusted to a company with testing qualifications to conduct testing.
bio fertilizer processing unit

If heavy metals exceed the standard, the raw material sludge of this batch will be rejected to ensure that the heavy metal indicators of the sludge must meet the "urban Sewage treatment plant sludge disposal landscaping mud" (GBT 23486-2009) standard requirements.

Quicklime is packed in 25kg bags, and peanut shells/straw chips are packed in 20kg bags, which can reduce the generation of dust during transportation and unloading.

After the quicklime is transported in closed vehicles, it is manually unloaded to the raw material temporary storage area. Handle with care to reduce the amount of dust in the fermentation area.

Fermentation

The 28-30 t/h biofertilizer production unit project adopts the method of "aerobic strip-stack fermentation", without setting up a separate sludge temporary storage field, and directly batches and transports the incoming materials to the fermentation tanks specially set up in the partition, and uses bricks and then cement to smooth them out.

The height of each fermentation tank is 50cm , an area of 400 square meters, a total of 10 fermentation tanks, 2 for the production of farmland organic fertilizer, 8 for the production of green organic fertilizer.

Fermentation and composting is carried out once a day, and 300 tons of sludge is added at a time. According to the process requirements, the proportion of peanut shells and straw debris is further reduced to 50%.
bio fertilizer production unit Fermentation

At the same time, the fermentation bacteria (self-heating fermentation bacteria) and quicklime required by the process are added (Bactericidal effect), deodorant, put into the No. 1 fermentation tank, and the next day, the incoming material is repeatedly put into the No. 2 fermentation tank, and so on.

On the eighth day, the incoming material is put into the No. 8 fermentation tank. The fermentation tank completes the fermentation operation (the general fermentation period is 7 days).

Each fermentation tank is turned over once a day, and deodorant is supplemented when turning over. The fermentation area and the ground are laid parallel to the aerator blowing pipeline, and there is a blowing hole above the pipeline, and the blowing pipeline is connected to the aerator outside the workshop, which is used for blowing oxygen during the fermentation process.

During the fermentation process, an aerator is used to introduce air from the outside of the workshop to supplement oxygen from the bottom of the material through the aeration line to provide aerobic fermentation conditions.

Dried & crushed

The fermented material is transported to the drying area by a closed conveyor belt for drying. The material (with a moisture content of about 40%) that has reached the humidity required by the process is returned to the fertilizer crusher machine for pulverization.
 

Granulation & packaging

Part of the crushed material is packaged as powdered organic fertilizer, and the other part is transferred to the organic fertilizer pellet machine for spray granulation. Our precision-crafted pellet dies apply just the right amount of pressure at low temperature to preserve the nutrients and microorganisms that Contribute to healthy soils and healthy plants.

The finished product after granulation is packaged as spherical organic fertilizer. The packaging is weighed and packaged in a woven bag lined with a plastic bag, 40kg per bag.

public works

Water supply

The water used in this 28-30 t/h biofertilizer production unit project is mainly vehicle washing water, granulation water and domestic water.

Drainage

The amount of domestic sewage produced by the bio fertilizer unit project is calculated as 85% of the domestic water consumption, and the domestic sewage production is about 177t/a. After being treated in the septic tank, the agricultural fertilizer is used outside.

Sludge and animal feces with a moisture content of 60% bring in 36,000t/a of water, and fermentation bacteria/deodorants bring in 40t/a of water; the product has a moisture content of 40%, and the product takes away 24,000t/a of water, which is formed by fermentation and drying.

The water vapor is 12040t/a, after being absorbed by the spray tower, the waste water enters the sedimentation tank to clarify the supernatant, part of which is reused for vehicle washing 7200t/a, part of which is used for granulation water 700t/a, and part of which is reused for plant greening 2340t /a, and part of it will be used for supplementary water of biofilter 1800t/a.

Why start biofertilizer production unit in China?

Looking at agricultural countries around the world, it is a common phenomenon to substantially increase the proportion of organic fertilizer use, and most of them have exceeded the watershed of half.

The data shows that in the fertilizer structure of European and American countries, organic fertilizer plays a decisive role. In the United States, organic fertilizer accounts for 46%; Britain accounts for 57%; Germany accounts for 60%; France accounts for 37%; Australia accounts for 55%; Canada accounts for 60%, etc.

However, the proportion of organic fertilizers in my country's chemical fertilizer use is only 5%-10%. If the proportion can reach 10%, its market capacity will reach 14 million tons. In the future, with the gradual expansion of the proportion of organic fertilizer use, to It is expected to reach 23 million tons in 2023.

Therefore, for Chinese enterprises, it is promising to enter the organic fertilizer processing industry.

Chicken manure, livestock manure, cattle-sourced compost. Richi Machinery castings. even animal “biosolids.” All these waste products can be transformed into safe, dry, easily applied fertilizer products with RICHI pelletizing systems.

Richi Machinery is a professional manufacturer specialized in biofertilizer production unit. Our company has been following the concept of service marking, fully and effectively using the advantages of resources, talents, research and development to provide users with better products better services. If you have Any questions about setting up bio fertilizer unit project, just feel free to contact us directly!

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