废水或工艺液体里的热，能不能送到热水或热网？

This page is for wastewater, process liquid and sewage. An in-plant hot-water loop and a district or campus heat network are different boundaries. The required temperature, the contract and who operates the network are not the same decision as heating a tank inside the plant.

Flow, fouling, the minimum outlet temperature, and whether demand exists at the same time all change how much heat can be taken. Cooling a stream below its allowed outlet can break a process limit or a discharge limit. A source that exists only in summer and a network that needs heat only in winter do not automatically match.

This page does not design a heat network or size a heat exchanger. Fouling that has not been observed stays blank.

Flue gas, seawater and ambient air can also feed a heat pump. They fall outside this wastewater and process-liquid checklist. Seawater is a liquid source and needs its own checks for intake and discharge, corrosion and ecological constraints. When the source is one of those, continue from the opportunity atlas and name the source before screening.

If the destination is still unclear, mark the stream and the user it might serve on one sketch, including the seasons each one runs. When flow, temperatures and overlap are known, open the wastewater and heat-network pathway, then the focused screen. Screening does not design the network.

This is an editorial learning guide, not a plant audit or a measured savings result. Site inputs remain unknown until supplied and checked. Detailed design, procurement, hygienic and pressure-equipment decisions require qualified review. Read our editorial principles.

这篇只谈废水、工艺液体和污水。厂内热水回路，和区域供热或厂区热网，不是同一边界。需要的温度、合同，以及热网由谁运行，和给厂内一只水箱加热不是同一件事。

流量、结垢、最低出口温度，以及用热是否同时存在，都会改变能取走多少热。把水流降到允许出口温度以下，可能违反工艺限制或排放限制。只在夏季出现的热源，和只在冬季需要热的热网，不会自动对上。

这篇不设计热网，也不给换热器选型。没有观察到的结垢情况留空。

烟气、海水和环境空气也可以作为热泵热源。它们不在本文的废水与工艺液体清单范围内。海水属于液体热源，还需单独核对取排水、腐蚀和生态约束。热源是其中一种时，先到机会地图写明热源，再做初筛。

去向还不清楚时，先在一张简图上标出这股水和它可能服务的用热，并写上各自运行的季节。流量、温度和重叠时段清楚之后，再打开废水与热网路径，然后进入这条路径的初筛。初筛不设计热网。

本文为编辑整理的入门指南，不是现场审计或实测节能成果。现场数据在提供并核对前保持未知。详细设计、采购、卫生与压力设备事项需要合格专业人员复核。参见编辑原则。