FIELD: treatment plants.
SUBSTANCE: invention relates to water disposal, particularly to systems for pumping liquid sewage sludge. System includes a tank with a feed pipe, at least one pump with pressure and suction pipelines, a discharge pipeline and an air-hydraulic column. Column is made in form of a vertical pipe with a pipe for feeding initial sludge and a pipe for discharging degassed sludge located in lower part, and with pipe for discharging gases for degassing. Pump suction pipeline is connected with branch pipe to discharge degassed sludge of air-hydraulic column. Pump has a flow part which cannot be clogged with long-fibre substances flow part and/or system is additionally equipped with low-speed high-torque crusher of long-fibre inclusions, installed on discharge pipeline and/or pump suction pipeline.
EFFECT: higher system reliability.
1 cl, 1 dwg
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| SEWAGE TREATMENT PLANT | 1992 |
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RU2027680C1 |
