13.030.20 Šķidrie atkritumi. Nogulsnes

Evaluation methods for industrial wastewater treatment reuse processes

Guidelines for softening and desalination of industrial wastewater for reuse

Drinking water, wastewater and stormwater systems and services — Management of on-site domestic wastewater services

Drinking water, wastewater and stormwater systems and services — Adaptation of water services to climate change impacts — Part 4: Wastewater services

Faecal sludge treatment units -- Energy independent, prefabricated, community-scale, resource recovery units -- Safety and performance requirements

Soil, treated biowaste, sludge and waste -- Digestion of aqua regia soluble fractions of elements

Augsne, apstrādāti bioatkritumi, dūņas un atkritumi. Karaļūdenī šķīstošo elementu frakciju šķelšana (ISO 54321:2020)