Automatic Wood Classifying System to Produce Renewable Fuels from Construction Waste

2013 ◽  
Vol 433-435 ◽  
pp. 2038-2042 ◽  
Author(s):  
Sung Hoon Oh
Keyword(s):  
Renewable Fuels ◽  
Construction Waste ◽  
Air Volume ◽  
Vinyl Plastic

Automatic wood classifying system was developed to sort wood only from construction waste such as vinyl, plastic, and wood in order to produce renewable fuels. Automatic classifying processes are performed in the following order, step1: crushing, step2: analysis in the form of a mixture with water, step3: collection and transporting of floating materials, step4: classifying float materials with blower system. To classify a mixture of wood that are classified by air wind volume and classifying wood reliability can be varied depending on air wind volume. And, vinyl and plastic are difficult to classify due to increase in weight with water during the processes. Therefore, the number of times the experiment was repeated to get the optimal air volume to control it. In this experiment, the air wind volume is very important part.

scholarly journals A Study on the Properties of Recycled Aggregate Concrete and Its Production Facilities

2019 ◽  
Vol 9 (9) ◽  
pp. 1935 ◽  
Author(s):  
Jung-Ho Kim ◽  
Jong-Hyun Sung ◽  
Chan-Soo Jeon ◽  
Sae-Hyun Lee ◽  
Han-Soo Kim
Keyword(s):  
Drying Shrinkage ◽  
Quality Standards ◽  
Poor Quality ◽  
Recycled Aggregate Concrete ◽  
Recycled Aggregate ◽  
Freezing And Thawing ◽  
Construction Waste ◽  
Aggregate Concrete ◽  
Air Volume

In recent years, the amount of construction waste and recycled aggregate has been increasing every year in Korea. However, as the recycled aggregate is poor quality, it is not used for concrete, and the Korean government has strengthened the quality standards for recycled aggregate for concrete. In this study, research was conducted on the mechanical and durability characteristics of concrete using recycled aggregate, after developing equipment to improve the quality of recycled aggregate to increase the use of recycled aggregate for environmental improvements. The results illustrated improvements in the air volume, slump, compressive strength, freezing and thawing resistance, and drying shrinkage. Furthermore, this study is expected to contribute to the increased use of recycled aggregate in the future.

A Study on Automatic Sludge Discharger of a Water Tank of Intermediate Treatment Contractors of Construction Waste

2017 ◽  
Vol 864 ◽  
pp. 202-205
Author(s):  
Gui Ho Oh ◽  
Sung Hoon Oh
Keyword(s):  
Storage Tank ◽  
Storage Time ◽  
Optimal Time ◽  
Renewable Fuels ◽  
Water Tank ◽  
Construction Waste ◽  
Know How ◽  
Time Period

While an intermediate treatment contractor of construction waste extracts renewable fuels from construction wastes, water is stored in a water tank and a considerable amount of sludge remain in the water. In this respect, the present study designed an apparatus to automatically discharge sludge from the water tank. The discharging process of the apparatus is as follows: it sucks sludge along with water of the water tank into a storage tank. Sludge and water stay for a certain time period until the former settles. And water drains out from the storage tank, being separated from sludge that still remains in the storage tank. The amount of sludge to discharge depends on its storage time in the tank. Therefore, the duration of settlement was measured to find an optimal time. Discharging test was repeated. An impeller was installed on top of the storage tank to know how it affects sludge settlement. Using the collected data, this study confirmed the factors necessary for smooth discharging of sludge.

Rancang Bangun Sistem Monitoring Pengukuran Volume Air Berbasis IoT Menggunakan Arduino Wemos

2020 ◽  
Vol 6 (2) ◽  
pp. 147-153
Author(s):  
Muhamad Yusup ◽  
Po. Abas Sunarya ◽  
Krisandi Aprilyanto
Keyword(s):  
Waste Water ◽  
Waste Water Treatment ◽  
Water Reservoir ◽  
Ultrasonic Sensor ◽  
Automated System ◽  
Volume Formula ◽  
Air Volume ◽  
Database Server ◽  
A Company ◽  
Height Data

System The process of counting and storing in a manual water reservoir analysis has a high percentage of error rate compared to an automated system. In a company industry, especially in the WWT (Waste Water Treatment) section, it has several reservoir tanks as stock which are still counted manually. The ultrasonic sensor is placed at the top of the WWT tank in a hanging position. Basically, to measure the volume in a tank only variable height is always changing. So by utilizing the function of the ultrasonic sensor and also the tube volume formula, the stored AIR volume can be monitored in real time based on IoT using the Blynk application. From the sensor, height data is obtained which then the formula is processed by Arduino Wemos and then information is sent to the MySQL database server via the WIFI network.

Construction waste disposal practices: the recycling and recovery of waste

2014 ◽  
Author(s):  
A. Puskás ◽  
O. Corbu ◽  
H. Szilágyi ◽  
L. M. Moga
Keyword(s):  
Waste Disposal ◽  
Construction Waste

RECYCLED BRICK SOUNDPROOF TEST AS AN ALTERNATIVE SUSTAINABLE MATERIAL

2020 ◽  
Vol 13 (2) ◽  
pp. 44-54
Author(s):  
Hendrico Firzandy Latupeirissa ◽  
Gierlang Bhakti Putra ◽  
Niki Prastomo
Keyword(s):  
Waste Disposal ◽  
Sound Source ◽  
Building Material ◽  
Building Materials ◽  
Negative Impact ◽  
The Other ◽  
Human Comfort ◽  
Construction Waste ◽  
Coarse Grains ◽  
Made In

Brick debris that makes up the majority of construction waste has not received proper waste disposal in Indonesia. On the other hand, brick debris could be potentially reused as non-structural building materials to reduce its negative impact on the environment. This study aims to test the effectiveness of soundproofing on recycled brick debris. The soundproof test was carried out on brick debris in the form of fine and coarse grains. The simulation box is then used as a support for the brickwork material and then the box is exposed to a sound source with a certain level of noise that is considered disturbing human comfort. Noise level measurements are made in the outside and inside the box. These measurements are tabulated and then analyzed to see the success of the two aggregates in reducing noise. Basically, the brickwork material has succeeded in becoming a recycled building material that can absorb noise, although further research must be carried out to be able to state that this material is truly ready to be used as an alternative building material with good acoustic capabilities.

Behaviour of air injection nozzles in dissolved air flotation

1995 ◽  
Vol 31 (3-4) ◽  
pp. 25-35 ◽  
Author(s):  
E. M. Rykaart ◽  
J. Haarhoff
Keyword(s):  
Bubble Coalescence ◽  
Second Phase ◽  
Initial Growth ◽  
Two Phase ◽  
Dissolved Air Flotation ◽  
Nozzle Orifice ◽  
Pressure Release ◽  
Air Volume ◽  
Air Flotation ◽  
Dissolved Air

A simple two-phase conceptual model is postulated to explain the initial growth of microbubbles after pressure release in dissolved air flotation. During the first phase bubbles merely expand from existing nucleation centres as air precipitates from solution, without bubble coalescence. This phase ends when all excess air is transferred to the gas phase. During the second phase, the total air volume remains the same, but bubbles continue to grow due to bubble coalescence. This model is used to explain the results from experiments where three different nozzle variations were tested, namely a nozzle with an impinging surface immediately outside the nozzle orifice, a nozzle with a bend in the nozzle channel, and a nozzle with a tapering outlet immediately outside the nozzle orifice. From these experiments, it is inferred that the first phase of bubble growth is completed at approximately 1.7 ms after the start of pressure release.

Estimating construction waste generation in residential buildings: A fuzzy set theory approach in the Brazilian Amazon

2020 ◽  
Vol 265 ◽  
pp. 121779 ◽  
Author(s):  
Luiz Maurício Furtado Maués ◽  
Brisa do Mar Oliveira do Nascimento ◽  
Weisheng Lu ◽  
Fan Xue
Keyword(s):  
Set Theory ◽  
Fuzzy Set ◽  
Fuzzy Set Theory ◽  
Residential Buildings ◽  
Brazilian Amazon ◽  
Theory Approach ◽  
Waste Generation ◽  
Construction Waste
Sign in / Sign up

Export Citation Format

Share Document