According to the 1996 protocol to the London Convention, dumping thesludge to the ocean is no more allowed. Enbiocons offers a new solutioncalled "SAFE" (System for sludge as Advanced Fuel & Energy) forthermal dry of wet Sludge. By removing moisture from sewage sludge,we achieve dry granule less than 10% of moisture contents(over 90%Dry Solid) and the size of granule is max. 20 mm dia. This process hasconstructed and designed for dry capacity of 2,500 ton/day of sewagesludge from Seoul, Gyeonggi-do, Incheon and Pusan, the population ofthese regional local governments is about 27,000,000. The end products,dry sludge, use for the auxiliary fuel of thermal power plants.

Why SAFE ?

•Rotary kiln equipped with the cutting blades

•Blades are designed heat resistant and wear resistant material

•Convection and Direct heating by hot air

•Reduce disposal cost through decreased weight and volume

"SAFE" ONE OF THE BEST SOLUTIONFOR SEWAGE SLUDGE TREATMENT

▶ Advantage of Cutting Blades

•Cut the sludge into as small as possible to increase

the specific surface area and improve the water

evaporation.

•Using the cutting blades & high temperature flue gas

: dry the water of sludge surface using high

temperature flue gas to remove viscosity of sludge

for a short time and then crush the sludge lump

•Reducing energy cost

Function of Main Equipments

01Wet Sludge Storage Tanks and Gate

•This process consists of Sludge storage tanks, wet sludge supply pump and

hydraulic driving gate to prevent the diffusion of malodor.

•The pump is hydraulic piston type. It guarantees no blocking the piping.

•The odor around gate is collected and send to the hot air generator and burnt

away.

•The pump can be control the volume of supplying Sludge by control of piston work

02Dryer•Simple and Safe operation

•Rotary kiln equipped with the cutting blades

•Two steps sludge cutting process enable to improve energy and dry efficiency

•No malodor spreading allowed

•As soon as input the sludge, cutting blades cut into small pieces.

•Explosion protect system

03

04

Heat sources •Combined Direct and Indirect drying is possible

•The malodor is used for combustion air

•Designed for Absorbtion of combustion shock

Odor Control•All odor generated from process, controled and minimized through 3 steps of odor control system.

•Odor control process consists of Wet scrubbing, Bio -filter and chemical scrubbing process.

▶ Wet scrubber works•Direct cooling effect

•2steps cooling down

•Low-off gas causing condensing effect

▶ Bio Filter•Reducing operation cost by Biological deodorization

•Low pressure drop

▶ Chemical scrubbing•Remaining odor control

Stability•Fast response to the fluctuations of sludge volume and property

•Optimized design for feeder and screw

•Enable to control the sludge supply by adjustment of piston work

Simplicity•Easy to maintenance

•Outstanding durability

Dryer equipped Sludge cutting system•High dry efficiency

•Corrosion resistance material applied

•Enable to Control the moisture contents of dry sludge

•Enable to control the detention time and input volume

•Odor from process burning away at heat generator

Heat recovery system and odor and dust control•2 step cyclonic dust collector

•Flue gas heat recovery system

•4 Steps odor control

Advantage of SAFE process

Direct Drying Process

Process of SAFE

Combination (Indirect & Direct Drying) Process

ReferencesClassification Contents

Facility Name SUDOKWON Landfill Site Sewage Sludge Recycling Facility

Owner SUDOKWON Landfill Site Management Corp. (Public Company)

Location Energy complex, 3rd landfill site, SUDOKWON Landfill Site

Scale first basement level, two stories building, building area : 550m2

Method Direct drying by using hot air

Facility Capacity 100 tons/day x 24 hr/day

Construction Period 2009. 7 ~ 2009. 9

Classification Contents

Construction Name Busan Sewage Sludge Treatment Facility Construction (Regional Local Governments)

Owner Busan (Regional Local Governmet)

Location 135-94 Saenggok-dong, Gangseo-Ku, Busan, Korea

Site Area area : 8,616m2

Scale 2nd basement level, three stories building, building area : 2,617.75m2, gross area : 5,445.56m2

Method Indirect drying & Direct drying by using hot air

Capacity 550 tons/day x 24 hr/day (185 tons/day x 3 unit)

Construction Period 2010. 8 ~ 2013. 2

Classification Contents

Constructin Name SUDOKWON Landfill Site Sewage Sludge Recycling Facility(2nd) Construction (Public corporation)

Owner SUDOKWON Landfill Site Management Corp. (Public Company)

Location Energy complex, 3rd landfill site, SUDOKWON Landfill Site.

Site Area area : 15,520.70m2

Scale 2nd basement level, two stories building, building area :5,280.43m2, gross area :11,593.79m2

Method Direct drying by using hot air

Capacity 1,000 tons/day x 24 hr/day (100 tons/day x 10 units)

Construction Period 2010. 2 ~ 2012. 1

ENBIOCONS CO., LTD.

Rm6, Changkang B/D., #84-3, 2-ga, Jeo-dong, Seoul 100-032, Korea

Tel. 82-2-2272-0930 / Fax. 82-2-2267-6373 / E-mail. enbiocons@gmail.com / www.enbiocons.com

LEADING ENVIRONMENTAL COMPANY

(Certificated by Minister of Environment, Korea)