Hisense Laser Display Co., Ltd.

Qingdao Technological University

Lu Chen

Dalei Zhang

Xiuyan Cao

Yuhao Zhao

Liang Yin

Yong Tian

Wentao Luo

Jianju Li

Feng Zhao

Provided are an optical illumination system, and a projection device. In an example, the optical illumination system includes a DMD, a lens assembly and a RTIR assembly. The lens assembly adjusts a light beam. The RIM assembly includes a first plano-convex lens and a wedge prism. The first plano-convex lens includes a plane surface and a convex surface and is configured to refract the light beam adjusted by the lens assembly. The wedge prim includes a first side surface, a second side surface and a third side surface. The plane surface of the first plano-convex lens is glued with the first side surface of the wedge prism. The wedge prism is configured to receive and refract the light beam refracted by the first plano-convex lens through the first side surface, and the light beam refracted by the first side surface is transmitted through the second side surface. The DMD is at a light emitting side of the second side surface of the wedge prism, and configured to receive and reflect the light beam from the second side surface of the wedge prism. The reflected light beam is incident to the first side surface of the wedge prism through the second side surface of the wedge prism for total internal reflection then transmitted through the third side surface.

Optical illumination system and projection device

Disclosed is a biogas residue-based in situ and ectopic coupled detoxification method for hexavalent chromium site and soil remediation agent. The method is applied to chromium-containing soil by formulating biogas residue, a carbon source and a sulfate into said soil remediation agent. Special construction and maintenance methods are adopted to achieve effective reduction of hexavalent chromium in deep contaminated soil. Therefore, the biogas residue-based in situ and ectopic coupled detoxification method for hexavalent chromium-containing sites cannot only be used to remediate chromium-containing sites deep in depth at a low cost and high efficiency, but also achieve recycled utilization of waste by treating waste with one another, thereby possessing significant value in promotion and practice.

Biogas residue-based in situ and ectopic coupled detoxification method for hexavalent chromium-containing sites and soil remediation agent

Growing community of inventors

Shandong, China

Lu Chen