— Green Treatment Technologies Biological treatment methods are considered the most promising green techniques for the management of dairy effluent that includes many processes that are shown in Fig It is the most suitable methods for the treatment of organic matter from dairy waste Carvalho et al 2013
Yêu cầu trực tuyến →— This study broke through the limitations of traditional phosphogypsum based building material utilization technology by using a simple physical mechanical method to act on phosphogypsum for the first time and the mechanical and waterproof properties of the finished products were much higher than those made by traditional curing technology
Yêu cầu trực tuyến →— This paper presents a case study of an optimized combination of mine water control treatment utilization and reinjection to achieve the zero discharge of mine water Mine water has been considered a hazard and pollution source during underground mining so most mining enterprises directly discharge mine water to the surface after simple
Yêu cầu trực tuyến →— The aerobic activated sludge process for treating PTA wastewater was continuously operated in four batches The performance of the activated sludge microalgae system was shown in Fig activated sludge process was designed to remove COD while the goal of the algal process was to capture CO COD decreased from 4373 ±
Yêu cầu trực tuyến →Case description In 2018 the Ministry of Housing and Urban Rural Development of the People s Republic of China 2018 selected 35 cities as pilot cities to mandatorily initiate their C&D waste recycling plans because these cities are at the forefront of development and economic level Additionally as construction activities are the major economic activities
Yêu cầu trực tuyến →— Abstract Construction waste typically accounts for roughly 30% of municipal solid waste and thus poses a great challenge to government authorities in almost all cities around the world especially those in developing counties To promote the adoption of circular economy and improve construction waste management performance in China s
Yêu cầu trực tuyến →— This review article provides an overview of the current e waste recycling and utilization technologies including mechanical recycling pyrolysis and gasification hydrometallurgical and bio metallurgical processing and emerging technologies reusing e waste in further construction pre treatment methods and the advancements made
Yêu cầu trực tuyến →— 1 Introduction Steel slag is the main solid waste generated in the steel making process accounting for 15 to 20% of crude steel output [1] China s crude steel output in 2021 was billion tons [2] more than half of the global crude steel output billion tons [3] and the steel slag output exceeded 120 million contrast the
Yêu cầu trực tuyến →— While single treatment technologies have limitations integrated processes can improve treatment results while overcoming the limitations of single treatment technologies Therefore future research should focus on exploring the feasibility and effectiveness of a combination of treatment technologies to treat AMD and recover
Yêu cầu trực tuyến →— Garbage classification is an important link in the construction of the urban environmental governance system and it is also one of the most effective ways to solve the garbage problem the garbage classification and resource utilization system is an important part of the national system Although China s waste classification has been
Yêu cầu trực tuyến →— On the other hand the insoluble impurities filtered from barium sulfide solution will be discharged as a waste by product Gu et al 2019a and the by product is called black ash sludge Kulkarni et al 1998 more commonly known as barium slag BS in 3 presents the flow chart of barite converting into barium sulfide and BS
Yêu cầu trực tuyến →— A wide variety of biomass is available all around the world Most of the biomass exists as a by product from manufacturing industries Pulp and paper mills contribute to a higher amount of these biomasses mostly discarded in the landfills creating an environmental burden Biomasses from other sources have been used to produce
— The fiber effectiveness in the concrete composite is assessed by the respective material s mechanical characteristics which depend on multiple factors like the bonding among fiber and the surrounding matrix fiber material properties the fiber reinforced concrete production method and the fiber content in the composite [52] In
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