FIELD: oil and gas industry. SUBSTANCE: drilling wastewater treatment plant has chassis-mounted tanks for solutions of coagulating and flocculating agents, pumps, a drilling wastewater treatment unit, a tank for dissolving reagents, a system of pressure pipelines, and a unit for treatment of sediments in drilling wastewater and spent drilling mud. In the casing of this unit there are mixing chambers, a diaphragm mounted in front of the chambers, and quick-detachable attachments with branch pipes. Through a pump, the tank for dissolving reagents is in communication with a three-way cock, a receiving hose, and a pressure hose. The unit for treatment of drilling wastewater and spent drilling mud sediments is open to dosing devices through another pump. EFFECT: higher efficiency; higher treatment quality. 4 cl, 6 dwg
