Abstract: The present invention discloses a method for recycling heavy oil produced water for use in a steam injection boiler without desilication, comprising: the heavy oil produced water sequentially undergoes pre-treatment, filtration treatment and divalent and trivalent scaling ion removal by using a macroporous weak acid resin and the like. The method may reduce the concentration of the divalent and trivalent scaling ions in the heavy oil produced water to below 50 ?g/L, and can recycle high-silicon-containing heavy oil produced water for use in the steam injection boiler without desilication. Further disclosed is a system for recycling heavy oil produced water for use in a steam injection boiler without desilication.

Abstract: The present invention discloses a method for recycling heavy oil produced water for use in a steam injection boiler without desilication, comprising: the heavy oil produced water sequentially undergoes pre-treatment, filtration treatment and divalent and trivalent scaling ion removal by using a macroporous weak acid resin and the like. The method may reduce the concentration of the divalent and trivalent scaling ions in the heavy oil produced water to below 50 ?g/L, and can recycle high-silicon-containing heavy oil produced water for use in the steam injection boiler without desilication. Further disclosed is a system for recycling heavy oil produced water for use in a steam injection boiler without desilication.

Abstract: A method for deep removal of divalent and trivalent scaling ions from heavy oil produced water is described. The method comprises performing divalent and trivalent scaling ion deep removal treatment on heavy oil produced water by using a macroporous weak acid resin, to reduce divalent and trivalent scaling ions in the heavy oil produced water to 50 ?g/L. The water quality of produced water treated using the method is superior to the boiler water standard, a silicon removal process in a conventional heavy oil produced water treatment process can be cancelled, and significant economic benefits are achieved.

Abstract: An obtaining method and apparatus for a block group header, a storage medium, and an electronic device are disclosed. The method may include, performing a determination as to whether a target node in a blockchain system meets a preset condition, where the preset condition is indicative of at least one of, the target node receiving a block group header but failing to receive a preset number of legal blocks, or the target node failing to receive the block group header; identifying a cause of an event that the target node fails to receive the block group header, in response to the determination that the target node fails to receive the block group header, where the cause of the event comprises at least one of, the target node failing to receive the block group header, or the blockchain system failing to generate the block group header; and determining a method for acquiring by the target node, the block group header that fails to be received, according to the cause of the event.