The paper studied the pilot moderate desalination of a certain chemical sewage by means of aeration filtration and electro-adsorption combined process.The results showed when the conductivity of inlet water was 3 650 ～ 4 160 μS / cm,the conductivity of outlet water after treatment was 820 ～ 1 000 μS / cm,average removal was 75.9%.The outlet water could be reused as industrial water,and the sewage could meet the discharge standard without any other treatment.The combined process had some advantages such as short flow,stable running,and no second pollution,which was green environmental protection technology and had good application prospect.

A voltage measuring method of series Li-ion battery based on flying capacitor technology was put forward.The circuit consisted of MOSFET output optical coupler,differential operational amplifier and AD sampling circuit.A 15 series battery single cell voltage measurement circuit was provided,high voltage switch was used in AQS225R2S,differential op amp was used in OP4177,and AD sampling was done by the MSP430F169,and then the experimental and analysis results of 15 cell lithium-ion battery cell voltage measurement circuit was provided.The results show that the method has the advantages of little effect on the lithium-ion battery,high precision and small volume,and can be used to estimate SOC and balance battery pack,which can be applied in electric cars and lithium energy storage systems and other fields.

The hydraulic pipe filter is one of the most important components in hydraulic equipments.Adopting modern design methods,and combining with the design theory of the filter,the thought of filter parametric design method was proposed.According to the characters of 2D filter simplified model,using VC+ + programming technology,the suitable parametric design software of filter was designed and the design efficiency of the filter was improved.It provides a new method and thought for the parametric design of filter and other key hydraulic components.

In order to predict the state of charge(SOC) of batteries for electric vehicle(EV),by analyzing the factors influencing the SOC of batteries,on the basis of charge and discharge test experiments of battery packs in different operating cases,an artificial neural network simulation model was set up.The author proposed a predictive SOC model based on BP neural network.The model can approach the non-linear function with many input/output parameters.By comparing simulation results with experimental results,simulation results are verified by experimental results,which can prove the correctness of the simulation method.

AIM:To study the isothermal anneal effect on microstructure and flexible strength of machinable mica based glass-ceramics.METHODS: On the basis of sintering method,a proper annealing treatment was determined via DTA analyzing,orthogonal experiment,SEM and three-bending test.RESULTS: With the higher annealing temperature and longer annealing time,the micromorphology characteristics of mica based glass-ceramics showed reduction of grain size,and its distribution was more homogeneous,and the glass phases and the crystal phases intercalated more compactly.The transverse rupture strength showed increasing tendency.The annealing groups and non-annealing group showed significant difference(P<0.05).Annealing for 1h and 4h,these transverse rupture strength showed no significant difference(P>0.05),while annealing for 7h at each temperature had(P<0.05).The transverse rupture strength was up to the maximum when annealing at 620℃ for 7h.The result of XRD showed no difference in the main crystalline,but the crystalline fraction were different.CONCLUSION: The best annealing treatment in our experiment is annealing at 620℃ for 7 hours,then furnace cooling.

In order to get the compact mica glass-ceramic sintered body,the powder precursor of complex oxide was prepared by liquid-phase precipitation method,the powder was treated by the two-step crystallization heat treatment to get machinable mica glass-ceramic powder containing fluorophlogopite(NaMg3AlSiO3O10F2) as the main crystalline phase.The crystallization procedure of the powder was investigated using DTA/TGA,FT-IR,XRD and TEM.The results show that the morphology of the prepared powder precursor particle is nearly spherical,the size of the particle is in the range of 10 ~20 nm,and the particle is uniform and with a little agglomeration.The morphology of the powder treated by the crystallization heat treatment is mainly lamellar.The fluorophlogopite is tobe crystallized at about 600 ℃,and with the largest nucleation rate at 650 ℃.Meanwhile a small quantity of nepheline(NaAlSiO4) and forsterite(Mg2SiO4) are also crystallized out at 650 ℃.The crystallization degree of the powder,after heat treatment,reached about 45%.

In this paper,the mechanism of leaching gold with thiosulfate and the gold recovery methods of the leaching solution are reviewed.The reviewed recovery methods include precipitation,activated carbon adsorption,resin adsorption,solvent extraction,electrowinning.It points out the existing problems and the trend of development.