Biochemical treatment: A large amount of organic pollutants have been removed from the pretreated production wastewater, but there is still a small amount of residue, which requires further in-depth treatment of the wastewater.

It can not be degraded by microorganisms in water body, but can only produce mutual transformation, dispersion and enrichment among various forms. It can exist either in the form of compound or in the form of ion. Its solubility is very small and it is often deposited on the bottom.

Urban surface runoff pollution is mainly caused by the pollutants accumulated in sunny days that form runoff under the action of rainfall, which can be carried out by a combination of engineering measures and non-engineering measures.

The domestic sewage treatment process can be divided into primary, secondary and tertiary treatment processes according to the degree of treatment.

First of all, it is necessary to control from the source, pay attention to the selection of production raw materials and production auxiliary materials, Secondly, for the wastewater that has been generated, it is necessary to select an appropriate process according.

Sludge treatment is the process of harmless treatment of sludge.  PDA is used to deeply dehydrate the sludge after inorganic conditioning, reducing environmental pollution.

Relevant research results were published in Water Research on the topic of Selective and fast recovery of rare earth elements from industrial wastewater by porous β-cyclodextrin and magnetic β-cyclodextrin polymers.

Recently, the Resource Cycle and Urban Metabolism Research Group of the Institute of Urban Environment, Chinese Academy of Sciences has made progress in the research on the global trade network pattern of polyethylene (PE) plastic waste.

Recently, the wastewater treatment plant in the relocation project of Tianjin eastern suburb sewage treatment plant and reclaimed water plant, which was jointly constructed by CSCEC, has officially put into commercial operation.

Wetlands enjoy the reputation of the "Kidney of the Earth" and have attracted global attention in terms of intercepting pollutants and improving water quality. Wetlands can reduce nitrogen pollution through various means such as plant absorption, soil fixation, and soil microbial processes (including denitrification and anaerobic ammonia oxidation).

The institute of soil and water conservation (ISWC) has made a series of progress in the research and development of new materials for ecological environment governance

This study revealed for the first time that changes in the activity of cyanobacterial cells will directly affect the chlorination process, providing an important reference for drinking water plants to apply chlorination to treat high-algae water.

Researchers at the Institute of Geochemistry of the Chinese Academy of Sciences have constructed a plan to adjust agricultural planting structure in contaminated areas by screening native crops with low accumulated mercury.

In a study published in Environ. Chem. Lett., a research group led by Prof. YANG Fan from Fujian Institute of Research on the Structure of Matter (FJIRSM) of the Chinese Academy of sciences developed a series of three-dimensional (3D) porous materials for specific adsorption of radionuclides.  

the Environmental Biotechnology Group of the Institute of Urban Environment, Chinese Academy of Sciences has explored the application of freshwater microalgae systems to remove multiple antibiotics.

the Xiao Hang team of the Institute of Urban Environment of the Chinese Academy of Sciences conducted elementary mercury observation research in the coastal area of Ningbo City. The results of the study indicate that the alternation of sea and land air masses is the main cause of fluctuations in elemental mercury concentration.

Cleaning up groundwater is no small job, but a team of Princeton researchers is on a mission to make it simpler — using microscopic springs.

Accoeding to the reaserchers, test of adsorption confirmed that CSAC/CSGAC can effectively remove emerging organic contaminants, such as sulfamethoxazole, bisphenol A, etc.

A team of researchers from TBI, Université de Toulouse, CRITT Bio-Industries and Carbios, Biopôle Clermont Limagne, has engineered a commonly known enzyme to efficiently break the chains that hold the building blocks of polyethylene terephthalate (PET) together.

The researchers integrated the kinetics of high-affinity methane oxidizing bacteria (HAMs; methane-oxidizing bacteria) and methanogens recently discovered in Arctic mineral soils into a biogeochemical model that includes the dynamics of permafrost soil organic carbon.