Soil salinization is a global problem that limits agricultural productivity and sustainable development. As waste‐derived soil amendments, biochar and organic fertilizer have garnered considerable attention for their ability to improve soil physicochemical properties and contribution to agricultural waste resource recovery. However, comparable data on the effects of biochar and organic fertilizers on the physicochemical properties of saline‐alkali soils are lacking. Therefore, we applied biochar (B1: 5 t ha−1 year−1; B2: 10 t ha−1 year−1; and B3: 20 t ha−1 year−1) and organic fertilizer (OF1: 7.5 t ha−1 year−1 and OF2: 10 t ha−1 year−1) to saline‐alkali soil in the Yellow River Delta (YRD), China, continuously for 3 years. Because of the influence of their application on soil fertility and water‐salt status, maize yield increased by 55.01–62.51% and 15.01–26.67% for the biochar and organic fertilizer treated soils, respectively. Biochar and organic fertilizer increased soil water content, Ca2+, Mg2+, total phosphorus, available phosphorus, total nitrogen,NO3−‐N,NH4+‐N, organic matter, and microbial biomass carbon and nitrogen, while decreasing the sodium adsorption ratio and soil pH. Compared with CK, Na+ and soil salt content were reduced by 3.83–8.16% and 2.45–12.08%, respectively, under biochar treatments and increased by 2.19–5.34% and 12.95–20.02%, respectively, under organic fertilizer treatments. Principal component analysis showed that biochar was more effective than organic fertilizer in increasing SWC and reducing salinity and Na+. Based on the evidence of this study, biochar presents an eco‐friendly agricultural strategy for improving saline‐alkali soils and increasing maize yield in the YRD.

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In this study, alumina ceramic plate microfiltration membranes (ACMs) were used for the treatment of oily wastewater with different concentrations. The permeate oil concentration of the system was basically less than 5 mg·L−1, and the oil rejection rate was up to 97.6%. The effects of raw oil concentration on permeation flux and oil rejection rate of oily wastewater were studied. The results showed that with the increase of raw oil concentration, the oil rejection rate increased slightly due to the existence of oil film on the surface of filtered ACMs. Moreover, the existence of oil film had little effect on the flux change of ceramic membranes. The results showed that the permeability of ACMs mainly depended on their own oleophobic properties. In this system, physical cleaning technology is used to remove oil droplets and particles blocked in membrane pores. The results showed that physical cleaning could significantly recover the permeation flux as well as improve the oil rejection rate. On this basis, a system is proposed as a potential technique for oily wastewater treatment.

In the art of installation, the environment is a very important part of it, and then people have changed into the active interpretation form of the content with this passive feeling of appearance and separation. Any type of art form, when mobilizing the human senses, is a special way of human understanding and communication, but it also includes the accepted information sensory system, the processing of the information system, and other thinking activities in the installation art. In addition, the display design generally involves a mobile space, at this time, as the main body of the whole display activity, the specific space formed by this display forms a high degree of interaction with the display activity. If the design of the exhibition space is reasonable and the theme of the space is very clear, then on this basis, this kind of exhibition space is very good and can be regarded as a perfect plastic art. 3DMAX technology can make the installation art more three-dimensional and clear. Therefore, the author discussed the use of 3DMax software to assist in the design and display of installation art.