Reagent elution combined with positive pressure filtration: A zero-discharge method for cyanide tailings remediation

2022 ◽  
Vol 113 ◽  
pp. 376-384
Author(s):  
Qiang Liu ◽  
Yating Luo ◽  
Jiyan Shi
2020 ◽  
Vol 260 ◽  
pp. 121091 ◽  
Author(s):  
Hong-Yi Li ◽  
Cheng-Jie Wang ◽  
Yi-Heng Yuan ◽  
Yun Guo ◽  
Jiang Diao ◽  
...  

2011 ◽  
Vol 261-263 ◽  
pp. 1355-1359
Author(s):  
Zhong Miao Zhang ◽  
Kai Fang ◽  
Jia Cheng Luo ◽  
Xing Wang Liu

Construction wastes have attracted more and more public attention with the development of the city construction. On the basis of summarizing the existing slurry treatment technologies in relevant area, a new slurry treatment process is proposed according to the characteristics of waste bored pile slurry. Three steps included in this process: slurry purification, flocculation and pressure filtration. A practical application is used to demonstrate the feasibility of this process. The results show that the slurry is disposed without pollution, achieving zero discharge of pollutants.


2006 ◽  
Vol 31 (11) ◽  
pp. 48-62 ◽  
Author(s):  
James F. Goss ◽  
Jonathan Zygowiec
Keyword(s):  

Author(s):  
Fremmy Raymond Agustinus

Desain penyejuk udara juga dapat diterapkan di bidang kesehatan, dengan standar Cleanroom dapat diperoleh suhu, kelembaban, kenyamanan dan kebersihan yang dibutuhkan untuk ruang steril (ruang bedah). Perancangan pendingin udara dalam hal ini dilakukan dengan menentukan beban pendinginan yang diperlukan untuk ruang steril (ruang bedah), kemudian menentukan ukuran ducting, jalur ducting, dan jumlah penggunaan ducting. Desain ini menggabungkan unit split saluran yang dimodifikasi, kipas booster, filter pra, filter medium, dan filter HEPA dengan menggunakan saluran aluminium preinsulated sebagai saluran udara. Desain dilakukan dengan menggunakan perangkat lunak AutoCAD 2012, Design Tools Duct Sizer, dan Microsoft Excel. Dari hasil perhitungan dan desain didapatkan kebutuhan kapasitas 3 ruang bedah yaitu ducted ducted 100.000 BTUH sebanyak 3 unit, booster fan 3.3 - 4 Di WG sebanyak 3 unit, pre filter 24 "x 24" x 2 "6 set, filter menengah 610 x 610 x 290 mm 6 set, dan filter HEPA 1220 x 610 x 70 mm 12. Untuk ruang steril, tekanan statis yang dihasilkan oleh unit pendingin harus lebih besar daripada tekanan statis yang dihasilkan dari unit yang ada. di ruang semi steril. Dengan kata lain, ruang steril harus memiliki tekanan positif terhadap ruang semi steril. Hal ini dimaksudkan agar udara di ruang semi steril tidak masuk ke ruang steril ketika pintu antar ruangan dibuka. Desain dan perhitungan ruang bedah, suhu nyata yang diperoleh adalah 23 ° C ± 2 ° C dan kelembaban relatif yang diperoleh adalah 60% ± 2%.   Air conditioning design can also be applied in the health field, with cleanroom standard can be obtained temperature, humidity, comfort and hygiene needed for sterile room (surgical room). The design of air conditioning in this case is done by determining the cooling load required for the sterile room (surgical room), then determining the ducting size, ducting path, and the amount of ducting usage. This design combines modified ducted split unit, booster fan, pre filter, medium filter, and HEPA filter by using preinsulated aluminum duct as an air passage. The design is done by using AutoCAD 2012 software, Design Tools Duct Sizer, and Microsoft Excel. From the calculation and design result obtained the capacity requirement of 3 surgical room that is split ducted 100.000 BTUH as many as 3 units, booster fan 3.3 - 4 In WG as many as 3 units, pre filter 24"x 24" x 2" 6 sets, medium filter 610 x 610 x 290 mm 6 sets, and HEPA filter 1220 x 610 x 70 mm 12 sets. For the sterile room, the static pressure generated by the cooling unit shall be larger than the static pressure generated from the unit present in the semi sterile room. In other words, the sterile room must have positive pressure to the semi sterile room. It is intended that the air in the semi sterile room does not enter into the sterile room when the door between room opened. In this surgical room design and calculation, real temperature obtained is 23 °C ± 2 °C and the relative moisture obtained is 60% ± 2%.


1999 ◽  
Vol 119 (8-9) ◽  
pp. 1084-1089 ◽  
Author(s):  
Haruo Kishida ◽  
Masafumi Tamura ◽  
Yoshiyasu Ehara ◽  
Tairo Ito

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