Trace organics variation across the wastewater treatment system of a Class-B refinery and estimate of removal of refractory organics by add-on mixed-media filtration and granular activated carbon at pilot scale

Modelling is considered to be an inherent part of the design and operation of a wastewater treatment system. The models used in practice range from conceptual models and physical design models (laboratory-scale or pilot-scale reactors) to empirical or mechanistic mathematical models. These mathematical models can be used during the design, operation and optimisation of a wastewater treatment system. To do so, a good software tool is indispensable. WEST is a general modelling and simulation environment and can, together with a model base, be used for this task. The model base presented here is specific for biological wastewater treatment and is written in MSL-USER. In this high-level object-oriented language, the dynamics of systems can be represented along with symbolic information. In WEST's graphical modelling environment, the physical layout of the plant can be rebuilt, and each building block can be linked to a specific model from the model base. The graphical information is then combined with the information in the model base to produce MSL-EXEC code, which can be compiled with a C++ compiler. In the experimentation environment, the user can design different experiments, such as simulations and optimisations of, for instance, designs, controllers and model fits to data (calibration).

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Microbial community and removal of nitrogen via the addition of a carrier in a pilot-scale duckweed-based wastewater treatment system

Bioresource Technology ◽

10.1016/j.biortech.2014.12.037 ◽

2015 ◽

Vol 179 ◽

pp. 549-558 ◽

Cited By ~ 36

Author(s):

Yonggui Zhao ◽

Yang Fang ◽

Yanling Jin ◽

Jun Huang ◽

Xinrong Ma ◽

...

Keyword(s):

Wastewater Treatment ◽

Microbial Community ◽

Pilot Scale ◽

Treatment System ◽

Wastewater Treatment System

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Design of the wastewater treatment system of an office building

Sustinere Journal of Environment and Sustainability ◽

10.22515/sustinere.jes.v1i2.15 ◽

2017 ◽

Vol 1 (2) ◽

pp. 48-62

Author(s):

Rizky Raissha ◽

Mas Agus Mardyanto

Keyword(s):

Wastewater Treatment ◽

Activated Carbon ◽

Engineering Design ◽

Treatment System ◽

Office Building ◽

Silica Sand ◽

Septic Tank ◽

Anaerobic Filter ◽

Wastewater Treatment System ◽

Equalization Tank

The MIPA Tower office building, an eleven-storey building, which is located in the area of Institut Teknologi Sepuluh Nopember Surabaya, is under construction. The building will be utilized for offices, classrooms, and laboratories. In the operation of the building, domestic and laboratory wastewater will be produced. This wastewater contains compounds that can pollute the environment. A design of domestic and laboratory wastewater treatment system is conducted. The system comprises of a neutralization tank, a grease trap, an equalization tank, an anaerobic filter, and an activated carbon and silica sand filter. The steps of the design are (i) collecting primary data and secondary data, (ii) calculating the engineering design, (iii) drawing the Detailed Engineering Design (DED), and (iv) calculating the bill of quantity and budget. The conclusion of this design is that the treatment plant will treat a mixture of domestic and laboratory wastewater. The dimension of each unit is as follows: (i) the neutralization tank (Ø = 0.65 m, H = 0.43 m), (ii) the grease trap (4 m x 2 m x 1 m), (iii) the equalization tank (10.5 m x 5.5 m x 2.5 m), (iv) the septic tank (4.5 m x 4 m x 2.5 m), (v) the six-compartment anaerobic filter (2.25 m x 4 m x 2.5 m), and (vi) the filter with activated carbon (H = 50 cm), silica sand (H = 150 cm), and gravel (H = 10 cm), with the diameter of the tank is 1.5 m.

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