Ecosystem Recycling Higashi Nihon
We mainly collect gold, silver, platinum from the scrap created generated in the process of manufacturing electronic materials and parts. We also scrape metal plating off from appliances received from our customers, extract precious metals and wash the appliances.
| INPUT | |
|---|---|
| Materials and resources input | 3,000 t |
| Service water | 7,000 m3 |
| Purchased power | 630 MWh |
| In-house power generation | - MWh |
| Fuel | 210 kL (converted to crude oil) |
| OUTPUT | |
|---|---|
| Product | 36 t |
| Other products (potassium gold cyanide) |
3 t |
| BOD | - t |
| COD | - t |
| Discharged water | - m3 |
| NOx | - t |
| SOx | - t |
| Emission to atmosphere | - Nm3 |
| Greenhouse gas | 700 t |
| Discharged substances targeted for PRTR | - kg |
| Wastes | 1,500 t |
| Recycling | 2,300 t |
Akita Zinc
Akita Zinc is the top zinc producing plant in Japan with annual production capacity of 200,000 tons. The company is the only company in Japan to use the hematite method and succeeded in high rate of collecting iron, gold, silver and rare metals while reducing loads to the environment.
| INPUT | |
|---|---|
| Materials and resources input | 310,000 t |
| Service water | 57,000,000m3 |
| Purchased power | 710,000 MWh |
| In-house power generation | - MWh |
| Fuel | 2,900 kL (converted to crude oil) |
| OUTPUT | |
|---|---|
| Product | 160,000 t |
| Other products (sulfuric acid, etc.) |
78,000 t |
| BOD | 300,000 t |
| COD | - t |
| Discharged water | 170,000 m3 |
| NOx | 56,000 t |
| SOx | 11 t |
| Emission to atmosphere | 7,000 Nm3 |
| Greenhouse gas | 600,000 t |
| Discharged substances targeted for PRTR | 340,000 kg |
| Wastes | - t |
| Recycling | 3,400 t |
Dowa Hightech
DOWA Hightech is a plant that manufactures silver powders for solar panels and plasma displays. DOWA’s silver powders are used as an electrode material for solar cells using single crystalline and polycrystalline silicon worldwide and it has the world top share of the silver powder market.
| INPUT | |
|---|---|
| Materials and resources input | 1,100 t |
| Service water | 1,400,000 m3 |
| Purchased power | 17,000 MWh |
| In-house power generation | 8,200 MWh |
| Fuel | 4,400 kL (converted to crude oil) |
| OUTPUT | |
|---|---|
| Product | 1,000 t |
| Other products (sulfuric acid, etc.) |
170 t |
| BOD | 3 t |
| COD | - t |
| Discharged water | 1,300,000 m3 |
| NOx | 3 t |
| SOx | - t |
| Emission to atmosphere | 75,000,000 Nm3 |
| Greenhouse gas | 15,000 t |
| Discharged substances targeted for PRTR | 92 kg |
| Wastes | 4,800 t |
| Recycling | 140 t |
DOWA Power Device
The DOWA Power Device plant manufactures metal-ceramic substrates used as parts for power devices that convert and control high-voltage/high-current electricity. These power devices are indispensable for the effective use of electricity and they are used for a wide range of applications such as home electric appliances including air-conditioning, industrial equipment, automobiles and railways.
| INPUT | |
|---|---|
| Materials and resources input | 850 t |
| Service water | 61,000 m3 |
| Purchased power | 4,500 MWh |
| In-house power generation | - MWh |
| Fuel | 140 kL (converted to crude oil) |
| OUTPUT | |
|---|---|
| Product | 120 t |
| Other products (sulfuric acid, etc.) |
- t |
| BOD | 0 t |
| COD | 0 t |
| Discharged water | 52,000 m3 |
| NOx | - t |
| SOx | - t |
| Emission to atmosphere | - Nm3 |
| Greenhouse gas | 3,600 t |
| Discharged substances targeted for PRTR | 130 kg |
| Wastes | 2,500 t |
| Recycling | 270 t |
DOWA Thermoengineering, Handa WorksPlant
Chukyo Handa Plant is specialized in thermal treatment method called carburizing and quenching, which is mainly for automobile parts. It is the largest heat treatment plant in Chukyo area with 31 furnaces. The company uses the gas carburizing method where carbon is added to the surface of steel to strengthen metal parts for longer life cycle.
| INPUT | |
|---|---|
| Materials and resources input | 14,000 t |
| Service water | 15,000 m3 |
| Purchased power | 11,000 MWh |
| In-house power generation | - MWh |
| Fuel | 4,000 kL (converted to crude oil) |
| OUTPUT | |
|---|---|
| Product | 14,000 t |
| Other products (sulfuric acid, etc.) |
- t |
| BOD | 0 t |
| COD | 0 t |
| Discharged water | 9,000 m3 |
| NOx | - t |
| SOx | - t |
| Emission to atmosphere | - Nm3 |
| Greenhouse gas | 13,000 t |
| Discharged substances targeted for PRTR | - kg |
| Wastes | 120 t |
| Recycling | 200 t |
