The various types of recyclable waste plastics are sorted and packed by the collection system. Before resource recovery, the obtained recyclables need to be processed by crushing and washing to produce clean materials, making it easier to further adopt physical or chemical methods for resource recovery. The crushing process mainly involves using crushing equipment to break down various types of waste plastics (such as waste PP plastic, waste HDPE plastic, waste PET plastic, waste PS plastics, etc.), decomposing them into much smaller plastic fragments. This process primarily consumes electricity and results in particulate matter pollution. The cleaning process primarily involves the use of fresh water and sodium hydroxide to clean various types of debris attached to waste plastics. The cleaning process consumes a certain amount of natural gas to heat the fresh water, to achieve better cleaning effect. This process requires the input of fresh water, natural gas, and sodium hydroxide, and produces wastewater, exhaust gas, and solid waste. This process is mainly applicable to the破碎 process before the resource utilization of waste plastics from various living sources. (Note: \"破碎\" may be a mistranslation or a missing term in the original text, please replace it with the correct term you intended to use.)