Envoland waste recycling plants

 

Our R&D team consisting of senior experts, having many man years of research, has produced a highly efficient process that will automatically sort and mass produce on an industrial scale from the fields of waste treatment, pyrolysis Fuel system, gasification, mechanics, microbiology and organic agriculture.

FACT

With the ENVOLAND-MSW Series solution, the environmental and economic impact of MSW disposal is considerably less than traditional methods, since only a fraction of the incoming waste is ultimately transported and disposed of through incineration or landfil”

Envoland systems are patentedEnvoland patents

 

Envoland Incineration vs Lanfilling vs Envoland solution(1)

 

SORTING METHODS

The various sorting waste methods utilised are:

1. Screening:

    • Vibration screen (Riddler)
    • Rotary screen
    • Grade screen
    • Fixed screen

2. Gravity Separation:

    • Flotation
    • Heavy Liquid Separation
    • Precipitation Separation
    • Wind separation
    • Inertia Separation
    • Vibration Isolation

3. Magnetic Sorting

4. Electrostatic Separation

5. Eddy Current Separation

6. Optical Separation

7. Magnetic Fluid Sorting

8. Molten Separation

9. Solvent Selection

10. Oil & Water Separator

11. Sub-humid Fragmented Separation

12. Stirring Separation

13. High-density Separation

MSW waste is a complex mixture of:

        • Kitchen waste: Food residues, vegetables, meat, bones, grease, etc.
        • Wood, plants and foliage: Flowers, branches, leaves, wood chips, wood chopsticks, etc.
        • Glass: bottles, windows, lamps, etc.
        • Sand & Stone: pebbles, sand, stones, ceramics, vases , etc.
        • Textiles: clothing, rags, bedspreads, etc.
        • Leather: bags, shoes, slippers, golf bags, artificial leather, etc.
        • Plastic: PE, PP bags & sacks, bottles, Styrofoam, foam, pipe, DVDs, CDs, tape etc.
        • Rubber: tires, floor mats, shoes, basketball, etc.
        • Paper: stationary, boxes, cartons, labels, newspapers, etc.
        • Metals: iron, cans, hammers, locks, cable, aluminum cans, racks, lanterns, umbrellas , etc.
        • Large Waste: Defective furniture, Bed, etc.
        • Electrical appliances: household, plugs and sockets, circuit boards, TVs, PCs, etc.

You can see from the above, the mixture of waste is very complicated.

Paper Waste is separated from non paper products such as staple pins, plastic laminate, tape, and processed into mixed paper pulp.

Organic Waste is recovered and processed into organic fertilizer. Styrofoam products and ferrous metals are recovered as recyclable polystyrene and scrap metal.

Plastic waste is recoveredd PE, PP, PS, PVC, OPP and heavy plastic (PVC, PET, OPP). Light plastic is further processed into plastic film, while heavy plastic is processed through the pyrolysis recycle system and further processed into gas, fuel, diesel, gasoline and electricity.

With the ENVOLAND-MSW Series solution, the environmental and economic impact of MSW disposal is considerably less than traditional methods, since only a fraction of the incoming waste is ultimately transported and disposed of through incineration or landfills.

Various Countries MSW Contents Ratio (%)

 

China

Taiwan

USA

Indonesia

*1. Kitchen Waste

45

37.73

15.8

65

*2. Paper

7

31.26

28

10.11

*3. Grass & Wooden

9

5.32

14.9

3.12

*4. Plastic

16

17.11

14.9

11.09

*5 White Plastic

2

 

 

0.55

*6. Rubber & Leather

2

 

3.3

0.55

*7. Cloth & Textile

4

2.05

5.2

2.45

 8. Sand & Soil

11

0.12

2.2

1.09

 9. Metal

1

2.57

7.1

1.9

10. Glass

2

3.15

6.3

1.63

*11. Others

1

 

2

3.02

Total %

100

99.31

99.7

99.96

 

* Total %

86

93.47

87.1

95.89

 

After Pre-treatment Plastic Ratio increase -
(
item 4 plus 5 then divide by * 4+5+6+7+11)

72

89.3

58.6

65.9



Items 1, 2, 3, 4, 5, 6, 7, 11 has * sign is after pre-treatment and then need to separate and recycle items.
* Total - means after pre-treatment of the total residual quantity.
Plastic containing ratio means after pre-treatment the waste plastic ratio of the residual (the waste plastic total containing ratio is increased).

Construction Waste Contents Description

 

 

after pre-treatment ratios

1. Sand, Stone, Bricks

85%

0.2

2. Metal

1%

0.5

3. Rubber

0.50%

5.5

4. PE, PP plastic material:

5.50%

2

5. Waste Wood

6%

2

6. Debris

2%

2

Plastic Containing ratio %

 

53.90%

Sand, Stone, and Bricks after pre-treatment screening, air separation all removed.

Separation Recycle Equipment v Processing Recycle Quantity

 

Recycle Q’ty

Process Q’ty

MSW 500T/D

Landfills Dig 1000~2500 M3 /D

Construction waste 1000 M3/D

Paper Mill waste 250T/D

PE, PP recycle

50T

50T

50T

50T

RDF

40T

20T

30T

25T

Waste Wood

30T

 

60T

 

Paper Pulp

30T

 

 

20T

Organic Beads

60T

 

 

 

Sand, Stone, Bricks

 

 

800 M3

 

Above is an average for reference only, as it depends on the different percentage of contents.  Landfills recovery dig has lots of debris, so it is not very accurate and the older landfills has less plastic sundries, therefore, the dig quantity will increase.

Various Countries Land Fills (from buried MSW) Recycle Contents Ratio:

 

China

Taiwan

USA

Indonesia

1. Plastic

16

17.11

14.9

11.09

2. White Plastic

2

 

 

0.55

3. Rubber and Leather

2

 

3.3

0.55

4. Cloth, Textile

4

2.05

5.2

2.45

 

 

 

 

 

Plastic Containing ratio %

66.6

89.3

63.7

81.3

Kitchen waste, paper , garden, wooden product after being buried for a few years is decomposed and after pre-treatment screening, air separation, magnetic separation, the sand, soil, glass and metal are removed.
The above is according to previous different countries MSW ratios formula calculations. It will vary according to the number of years the waste is buried, all areas have some difference. Taiwan for example, above plastic percentage is 89.3%, but after pre-treatment burial and recycle separation then the plastic percentage is 68%. It is because already buried more than 10 years, and 10 years ago the plastic is less used and those numbers are for reference only

Paper Mills Waste (San pulp residue, slag, screening slag waste)

1. Water

60%

2. Cotton, Textile

5%

3. Wooden

2%

4. Rubber

1%

5. Wet strong paper

8%

6. Plastic

22%

7. Metal

1%

8. Sand, Stone

1%

Dry plastic ratio

55%

This is calculated according to the average, because the waste is from different paper mills, different equipment then the paper pulp ratio is different. Paper mills discharges waste, water ratio is 50~80%.

 

MSW Contents Characteristics:

A. MSW Contents Gravity characteristics : (water equal 1)
1.) Lighter than water: oil, leaves, wood, Styrofoam, foam plastics, PE, PP, cigarette boxes, chopsticks, etc.
2.) Gravity between 1~2: kitchen waste, leaves, meat, closing, a rag, shoes, tires, rubber, etc.
3.) Gravity above 2: glass bottles, broken glass, stone, ceramic, irons, aluminum, copper, etc.
 

B.  MSW Organic Characteristics:
Food residues, vegetables, meat, oil, leaves, flowers, sticks, cigarette butts, sanitary paper, boxes, etc.

C.  MSW Inorganic Characteristics:
glass, sand, stone, ceramic, iron, aluminium, copper, etc.

D. MSW Muddy Characteristics :
kitchen waste, vegetable residue, grease, meat, fine silt, etc.

E. Absorbent and non-absorbent Characteristics:
Absorbent materials:
kitchen, vegetables, wood, clothing, rag, blankets, water sponges, paper and carton, etc.
Non absorbent material: plastic, rubber, glass, ceramic, iron, aluminum cans , etc.

F. MSW moisture characteristics (non-absorbent):
Food waste 70%; textile 10%; plants 60%; timber 20%; paper 15%

G. MSW Contents Large characteristics:
TV, Refrigerator, Furniture, Quilts, Ropes

H. MSW Fuel and Non-combustible Objects characteristics:
Fuel:
Kitchen waste, wood, bamboo, furniture, leather, paper, plants, etc.
Non-combustible Objects: Glass, stone, China, Metal, etc.

I. MSW not Burning Characteristics:
Plastics, Rubber, Leather, Foam etc.

J. MSW Density Characters:  KG/ M3

Food Waste

300

Paper

80

Plastic

60

Leather

160

Wood

240

Glass

200

Metal Containers

90

Ceramic, Mud, Bricks

480

K. MSW Making Organic Beads Characteristics:
Kitchen waste, plants, branches, paper, leaves, meat ….etc.

 

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