Proposals for regulatory methods to reduce nitrous oxide emissions from treatment facilities

Miljøprojekt 2290, Februar 2025

Proposals for regulatory methods to reduce nitrous oxide emissions from treatment facilities. One of the goals set in the “Climate Plan for a Green Waste Sector and Circular Economy” is to reduce nitrous oxide emissions from treatment plants with a capacity of 30,000 PE or more. Analysis work has therefore been initiated to determine how such regulation could be designed and implemented so as to achieve a 50 per cent reduction in nitrous oxide emissions from Danish treatment plants.

This report examines various types of limit values (regulatory methods) that could all be used to regulate nitrous oxide emissions from treatment facilities. In order to enforce a limit value, precise measurements of the plant’s nitrous oxide emissions are essential. This requires both valid, accurate measurement technology and a reliable method for calculating total nitrous oxide emissions from the plant. An assessment of various available measurement technologies has therefore been conducted. The report also propose a specific measurement and regulation method and presents estimates of the total costs of the proposed method.
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Danish summary: I ”Klimaplan for en grøn affaldssektor og cirkulær økonomi” er opsat en målsætning om at reducere lattergasudledningen fra renseanlæg med en godkendt kapacitet på 30.000 PE og over. Der er derfor igangsat et analysearbejde som udgangspunkt for, hvordan en sådan regulering kan designes og implementeres, således at lattergasemission fra danske renseanlæg reduceres med 50 %. Denne rapport præsenterer det gennemførte analysearbejde og giver anbefalinger til en sådan regulering.


Læs den danske rapport her.