In terms of processing, what are PW, IW, DW, and CW respectively? What are the differences in their compositions?
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In terms of processing, what are PW, IW, DW, and CW respectively? What are the differences in their compositions?
IW: Initial water intake amount; PW: Water produced; DW: Water discharged; CW: Water consumed; GW: Total water usage; RW: Water reused
PW: Process water; AW: Ammonia water; RW: Primary water, fresh water; BW: Boiler water; DW: Desalinated water; EW: Potable water; CSW: Chemical water; WW: Domestic wastewater; CW: Circulating cooling water
In a project I worked on, CW stands for circulating water.
In our factory, the material code is PW; process water is referred to as RW, raw water as DW, purified water as CW, and circulating water as CW
Let’s check the manufacturing process. The 2nd floor and the 3rd floor are both fine. Here’s a hint: PW can refer to pressure water, which is water under pressure; IW can be power water, meaning water used as a source of energy. Input water is DW, which refers to water that is introduced into the system. Discharge water is the water that is released from the system. Desaltwater is water from which salts have been removed, while deion water is water from which ions have been removed. CW can denote circulating water, and cooling water is water used for cooling purposes
Process water (its composition varies depending on the process requirements, so it cannot be generalized) – PW. Drinking water (standard specifications exist; these relate mainly to hardness, acidity and alkalinity levels, as well as turbidity) – DW. Circulating cooling water, also known as recycled water (control parameters include oxygen removal, ion removal, and pH value) – CW. I’ve never seen IW before
It depends on the specific regulations set for the process, but generally it is defined as follows: PW: process water; TW: demineralized water; DW: potable water; CW: circulating water, where CRW refers to recycled circulating water； CSW: Circulating feedwater
Depending on the regulations of different organizations or projects, the meanings of these terms vary. The following are the explanations provided in HG20519-92: PW – process water; IW – unknown; DW – desalinated water, drinking water, domestic water; CW – circulating water; BW – boiler feed water; CSW – chemical wastewater; DNW – desalinated water; DW – drinking water, domestic water; FW – fire fighting water; RW – raw water, fresh water; SW – soft water; WW – wastewater; HWR – hot water return water; HWS – hot water supply water. These are basically abbreviations of the first letters of English words, for reference only.
This is how we in the water treatment field usually use it. PW: Process water, water used in industrial processes. IW: Industrial water; it is also referred to as fresh water, and generally refers to water in which suspended solids have been removed through coagulation, sedimentation, and filtration. DW: Demineralized water, water from which ions have been removed through ion exchange or reverse osmosis; it can be divided into first-stage and second-stage demineralized water. CW: Cooling water, circulating cooling water
Why does it look like water from public pipelines?
Addition: IW: Refers to purified water; for example, the product water coming out of the bottom of an acidic water stripping tower is IW
iw: Process water; pw: Process water or pressurized water; DW: Desalinated water; CW: Circulating water, where CRW: Recirculated water； CSW: Circulating feedwater
My English is too poor; I can’t remember. The biggest regret now is not having improved my English when I was studying*
Our company’s codes: RW……river water, PW……process water, CW……recycled water (cooling water), DW……tap water
PW: Process water IW: Industrial water DW: Demineralized water CW: Circulating cooling water
PW, process water IW, industrial water DW, desalinated water CW, cooling water
PW process water: DW – desalinated water; DR – drinking water; CW – circulating water